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Date: Sat, 13 Mar 2004 14:49:16 -0600
From: Bob Peters 

Subject: {Collins} S Meter F/S


I have a new in the box S Meter for a R388 or 51J series S Meter 
F/S.  $25.00 to
include shipping.
Best 73's  Bob W1PE
Mesquite, TX 75149 

Sponsored by the Collins Collectors Association http://www.collinsradio.org
Nets: Tues: 3.805 Mc-2000 Central / Thur: 3.875 Mc-2000 Central
Fri: 3.895 Mc-2000 Pacific / Sun: 14.263 Mc-2000 UTC
1st Wed (of the month) AM Net 3.880 Mc-2000 local (ET, CT, MT, PT)
Sun AM Net: 29.050 Mc-1200 Central


Date: Sat, 13 Mar 2004 18:40:20 +0200
From: "Aaron G." 

Subject: {Collins} Extention cards for 651S-1


 Hello to the Group!
I'm back here, after some brake...
I have many  rare Collins accessories/items  that may be very usefull
to the members here. 
Items are: 
1.New original  set of extention cards  for 651S-1 receiver.
2. Set of new replacement cards for 651S1. (includ original box)
Asking  100-150$ for a card.
 
Please email me,  aarongu@zahav.net.il  for more detailes.
digitaly photographed all the set of cards,acc, etc.
(also plan to visit USA ,east coast, next month)
Aaron
4X1AG

 
Sponsored by the Collins Collectors Association http://www.collinsradio.org
Nets: Tues: 3.805 Mc-2000 Central / Thur: 3.875 Mc-2000 Central
Fri: 3.895 Mc-2000 Pacific / Sun: 14.263 Mc-2000 UTC
1st Wed (of the month) AM Net 3.880 Mc-2000 local (ET, CT, MT, PT)
Sun AM Net: 29.050 Mc-1200 Central


Date: Sat, 13 Mar 2004 19:16:56 -0600
From: "WB7DYW Dutch" 

Subject: {Collins} K4ZRD Screen Saver.


Just got my copy of K4ZRD's screen saver... awesome, if you have not got
yours yet ya are missing a real treat...

Thanks & 73's Dutch
Please visit my Collins web site.
http://users2.ev1.net/~wb7dyw/


Sponsored by the Collins Collectors Association http://www.collinsradio.org
Nets: Tues: 3.805 Mc-2000 Central / Thur: 3.875 Mc-2000 Central
Fri: 3.895 Mc-2000 Pacific / Sun: 14.263 Mc-2000 UTC
1st Wed (of the month) AM Net 3.880 Mc-2000 local (ET, CT, MT, PT)
Sun AM Net: 29.050 Mc-1200 Central


Date: Sat, 13 Mar 2004 20:16:41 -0600
From: Bob Peters 

Subject: {Collins} S Meter


Guys and Gals...The  S Meter  is  sold...Had  25  e mails  in  30  minutes...
Guess  I  under priced  it....Hi!!!Thanks  to all...
Best 73's  Bob W1PE
Mesquite, TX 75149 

Sponsored by the Collins Collectors Association http://www.collinsradio.org
Nets: Tues: 3.805 Mc-2000 Central / Thur: 3.875 Mc-2000 Central
Fri: 3.895 Mc-2000 Pacific / Sun: 14.263 Mc-2000 UTC
1st Wed (of the month) AM Net 3.880 Mc-2000 local (ET, CT, MT, PT)
Sun AM Net: 29.050 Mc-1200 Central


Date: Sat, 13 Mar 2004 19:28:58 -0600
From: "Bob Kemp" 

Subject: {Collins} F/S 75A4


Got a very nice 75A4 s#31XX. Has the "middle" production meter face...black
on the left and the lighter red markings for the s9 up to 60 over. First one
I've seen like this. Chasis clean, no rust on the transformer. Has 6kc and
3.1 kc filter. 4:1 knob. Replaced all the .1's, replaced the 3 section
electrolytic, Mhz dial original but not yellowed like many are.  A VERY nice
radio. Can send pics  $1400.  This is a plug and play unit.
Bob

Sponsored by the Collins Collectors Association http://www.collinsradio.org
Nets: Tues: 3.805 Mc-2000 Central / Thur: 3.875 Mc-2000 Central
Fri: 3.895 Mc-2000 Pacific / Sun: 14.263 Mc-2000 UTC
1st Wed (of the month) AM Net 3.880 Mc-2000 local (ET, CT, MT, PT)
Sun AM Net: 29.050 Mc-1200 Central


Date: Sat, 13 Mar 2004 21:55:23 -0500
From: David J Rodman MD 

Subject: {Collins} WTB: 75S-3B CW 500Hz


I am having rotten luck.  The first one I bought was damaged in 
shipping.  USPS told me forget claiming it as the package looked fine.  
The second one came just fine.  I tested it.  All OK.  My kids found the 
loose parts on the floor and threw them around.  Now the filter has a 
notable rattle and does not work.  I am pretty disappointed.  The last 
one cost me $175.  Any other ones out there?  Thanks.

Sponsored by the Collins Collectors Association http://www.collinsradio.org
Nets: Tues: 3.805 Mc-2000 Central / Thur: 3.875 Mc-2000 Central
Fri: 3.895 Mc-2000 Pacific / Sun: 14.263 Mc-2000 UTC
1st Wed (of the month) AM Net 3.880 Mc-2000 local (ET, CT, MT, PT)
Sun AM Net: 29.050 Mc-1200 Central


Date: Sat, 13 Mar 2004 19:05:04 -0800
From: "Larry Ravlin" 

Subject: {Collins} screen saver


I got my CD of the different stations from K4ZRD.  Awesome!  One of my
stations is one there check it out.

Larry L. Ravlin  AKA Laurence The Magnificent"
sheepdip@bossig.com
JESUS is LORD
Amateur Radio Operator Extra Class @ 20wpm
AA7LR
SCS 422
SCR 1475
NSCR
Member 22 man Night round star record
HighPower Rifle
Delta Wing Glider Pilot
V35 Bonanza Pilot
NAUI Certified



Sponsored by the Collins Collectors Association http://www.collinsradio.org
Nets: Tues: 3.805 Mc-2000 Central / Thur: 3.875 Mc-2000 Central
Fri: 3.895 Mc-2000 Pacific / Sun: 14.263 Mc-2000 UTC
1st Wed (of the month) AM Net 3.880 Mc-2000 local (ET, CT, MT, PT)
Sun AM Net: 29.050 Mc-1200 Central


Date: Sat, 13 Mar 2004 14:49:16 -0600
From: Bob Peters 

Subject: {Collins} S Meter F/S


I have a new in the box S Meter for a R388 or 51J series S Meter 
F/S.  $25.00 to
include shipping.
Best 73's  Bob W1PE
Mesquite, TX 75149 

Sponsored by the Collins Collectors Association http://www.collinsradio.org
Nets: Tues: 3.805 Mc-2000 Central / Thur: 3.875 Mc-2000 Central
Fri: 3.895 Mc-2000 Pacific / Sun: 14.263 Mc-2000 UTC
1st Wed (of the month) AM Net 3.880 Mc-2000 local (ET, CT, MT, PT)
Sun AM Net: 29.050 Mc-1200 Central


Date: Sat, 13 Mar 2004 18:40:20 +0200
From: "Aaron G." 

Subject: {Collins} Extention cards for 651S-1


 Hello to the Group!
I'm back here, after some brake...
I have many  rare Collins accessories/items  that may be very usefull
to the members here. 
Items are: 
1.New original  set of extention cards  for 651S-1 receiver.
2. Set of new replacement cards for 651S1. (includ original box)
Asking  100-150$ for a card.
 
Please email me,  aarongu@zahav.net.il  for more detailes.
digitaly photographed all the set of cards,acc, etc.
(also plan to visit USA ,east coast, next month)
Aaron
4X1AG

 
Sponsored by the Collins Collectors Association http://www.collinsradio.org
Nets: Tues: 3.805 Mc-2000 Central / Thur: 3.875 Mc-2000 Central
Fri: 3.895 Mc-2000 Pacific / Sun: 14.263 Mc-2000 UTC
1st Wed (of the month) AM Net 3.880 Mc-2000 local (ET, CT, MT, PT)
Sun AM Net: 29.050 Mc-1200 Central


Date: Sat, 13 Mar 2004 19:16:56 -0600
From: "WB7DYW Dutch" 

Subject: {Collins} K4ZRD Screen Saver.


Just got my copy of K4ZRD's screen saver... awesome, if you have not got
yours yet ya are missing a real treat...

Thanks & 73's Dutch
Please visit my Collins web site.
http://users2.ev1.net/~wb7dyw/


Sponsored by the Collins Collectors Association http://www.collinsradio.org
Nets: Tues: 3.805 Mc-2000 Central / Thur: 3.875 Mc-2000 Central
Fri: 3.895 Mc-2000 Pacific / Sun: 14.263 Mc-2000 UTC
1st Wed (of the month) AM Net 3.880 Mc-2000 local (ET, CT, MT, PT)
Sun AM Net: 29.050 Mc-1200 Central


Date: Sat, 13 Mar 2004 20:16:41 -0600
From: Bob Peters 

Subject: {Collins} S Meter


Guys and Gals...The  S Meter  is  sold...Had  25  e mails  in  30  minutes...
Guess  I  under priced  it....Hi!!!Thanks  to all...
Best 73's  Bob W1PE
Mesquite, TX 75149 

Sponsored by the Collins Collectors Association http://www.collinsradio.org
Nets: Tues: 3.805 Mc-2000 Central / Thur: 3.875 Mc-2000 Central
Fri: 3.895 Mc-2000 Pacific / Sun: 14.263 Mc-2000 UTC
1st Wed (of the month) AM Net 3.880 Mc-2000 local (ET, CT, MT, PT)
Sun AM Net: 29.050 Mc-1200 Central


Date: Sat, 13 Mar 2004 19:28:58 -0600
From: "Bob Kemp" 

Subject: {Collins} F/S 75A4


Got a very nice 75A4 s#31XX. Has the "middle" production meter face...black
on the left and the lighter red markings for the s9 up to 60 over. First one
I've seen like this. Chasis clean, no rust on the transformer. Has 6kc and
3.1 kc filter. 4:1 knob. Replaced all the .1's, replaced the 3 section
electrolytic, Mhz dial original but not yellowed like many are.  A VERY nice
radio. Can send pics  $1400.  This is a plug and play unit.
Bob

Sponsored by the Collins Collectors Association http://www.collinsradio.org
Nets: Tues: 3.805 Mc-2000 Central / Thur: 3.875 Mc-2000 Central
Fri: 3.895 Mc-2000 Pacific / Sun: 14.263 Mc-2000 UTC
1st Wed (of the month) AM Net 3.880 Mc-2000 local (ET, CT, MT, PT)
Sun AM Net: 29.050 Mc-1200 Central


Date: Sat, 13 Mar 2004 21:55:23 -0500
From: David J Rodman MD 

Subject: {Collins} WTB: 75S-3B CW 500Hz


I am having rotten luck.  The first one I bought was damaged in 
shipping.  USPS told me forget claiming it as the package looked fine.  
The second one came just fine.  I tested it.  All OK.  My kids found the 
loose parts on the floor and threw them around.  Now the filter has a 
notable rattle and does not work.  I am pretty disappointed.  The last 
one cost me $175.  Any other ones out there?  Thanks.

Sponsored by the Collins Collectors Association http://www.collinsradio.org
Nets: Tues: 3.805 Mc-2000 Central / Thur: 3.875 Mc-2000 Central
Fri: 3.895 Mc-2000 Pacific / Sun: 14.263 Mc-2000 UTC
1st Wed (of the month) AM Net 3.880 Mc-2000 local (ET, CT, MT, PT)
Sun AM Net: 29.050 Mc-1200 Central


Date: Sat, 13 Mar 2004 19:05:04 -0800
From: "Larry Ravlin" 

Subject: {Collins} screen saver


I got my CD of the different stations from K4ZRD.  Awesome!  One of my
stations is one there check it out.

Larry L. Ravlin  AKA Laurence The Magnificent"
sheepdip@bossig.com
JESUS is LORD
Amateur Radio Operator Extra Class @ 20wpm
AA7LR
SCS 422
SCR 1475
NSCR
Member 22 man Night round star record
HighPower Rifle
Delta Wing Glider Pilot
V35 Bonanza Pilot
NAUI Certified



Sponsored by the Collins Collectors Association http://www.collinsradio.org
Nets: Tues: 3.805 Mc-2000 Central / Thur: 3.875 Mc-2000 Central
Fri: 3.895 Mc-2000 Pacific / Sun: 14.263 Mc-2000 UTC
1st Wed (of the month) AM Net 3.880 Mc-2000 local (ET, CT, MT, PT)
Sun AM Net: 29.050 Mc-1200 Central


Date: Sat, 13 Mar 2004 14:49:16 -0600
From: Bob Peters 

Subject: {Collins} S Meter F/S


I have a new in the box S Meter for a R388 or 51J series S Meter 
F/S.  $25.00 to
include shipping.
Best 73's  Bob W1PE
Mesquite, TX 75149 

Sponsored by the Collins Collectors Association http://www.collinsradio.org
Nets: Tues: 3.805 Mc-2000 Central / Thur: 3.875 Mc-2000 Central
Fri: 3.895 Mc-2000 Pacific / Sun: 14.263 Mc-2000 UTC
1st Wed (of the month) AM Net 3.880 Mc-2000 local (ET, CT, MT, PT)
Sun AM Net: 29.050 Mc-1200 Central


Date: Sat, 13 Mar 2004 18:40:20 +0200
From: "Aaron G." 

Subject: {Collins} Extention cards for 651S-1


 Hello to the Group!
I'm back here, after some brake...
I have many  rare Collins accessories/items  that may be very usefull
to the members here. 
Items are: 
1.New original  set of extention cards  for 651S-1 receiver.
2. Set of new replacement cards for 651S1. (includ original box)
Asking  100-150$ for a card.
 
Please email me,  aarongu@zahav.net.il  for more detailes.
digitaly photographed all the set of cards,acc, etc.
(also plan to visit USA ,east coast, next month)
Aaron
4X1AG

 
Sponsored by the Collins Collectors Association http://www.collinsradio.org
Nets: Tues: 3.805 Mc-2000 Central / Thur: 3.875 Mc-2000 Central
Fri: 3.895 Mc-2000 Pacific / Sun: 14.263 Mc-2000 UTC
1st Wed (of the month) AM Net 3.880 Mc-2000 local (ET, CT, MT, PT)
Sun AM Net: 29.050 Mc-1200 Central


Date: Sat, 13 Mar 2004 19:16:56 -0600
From: "WB7DYW Dutch" 

Subject: {Collins} K4ZRD Screen Saver.


Just got my copy of K4ZRD's screen saver... awesome, if you have not got
yours yet ya are missing a real treat...

Thanks & 73's Dutch
Please visit my Collins web site.
http://users2.ev1.net/~wb7dyw/


Sponsored by the Collins Collectors Association http://www.collinsradio.org
Nets: Tues: 3.805 Mc-2000 Central / Thur: 3.875 Mc-2000 Central
Fri: 3.895 Mc-2000 Pacific / Sun: 14.263 Mc-2000 UTC
1st Wed (of the month) AM Net 3.880 Mc-2000 local (ET, CT, MT, PT)
Sun AM Net: 29.050 Mc-1200 Central


Date: Sat, 13 Mar 2004 20:16:41 -0600
From: Bob Peters 

Subject: {Collins} S Meter


Guys and Gals...The  S Meter  is  sold...Had  25  e mails  in  30  minutes...
Guess  I  under priced  it....Hi!!!Thanks  to all...
Best 73's  Bob W1PE
Mesquite, TX 75149 

Sponsored by the Collins Collectors Association http://www.collinsradio.org
Nets: Tues: 3.805 Mc-2000 Central / Thur: 3.875 Mc-2000 Central
Fri: 3.895 Mc-2000 Pacific / Sun: 14.263 Mc-2000 UTC
1st Wed (of the month) AM Net 3.880 Mc-2000 local (ET, CT, MT, PT)
Sun AM Net: 29.050 Mc-1200 Central


Date: Sat, 13 Mar 2004 19:28:58 -0600
From: "Bob Kemp" 

Subject: {Collins} F/S 75A4


Got a very nice 75A4 s#31XX. Has the "middle" production meter face...black
on the left and the lighter red markings for the s9 up to 60 over. First one
I've seen like this. Chasis clean, no rust on the transformer. Has 6kc and
3.1 kc filter. 4:1 knob. Replaced all the .1's, replaced the 3 section
electrolytic, Mhz dial original but not yellowed like many are.  A VERY nice
radio. Can send pics  $1400.  This is a plug and play unit.
Bob

Sponsored by the Collins Collectors Association http://www.collinsradio.org
Nets: Tues: 3.805 Mc-2000 Central / Thur: 3.875 Mc-2000 Central
Fri: 3.895 Mc-2000 Pacific / Sun: 14.263 Mc-2000 UTC
1st Wed (of the month) AM Net 3.880 Mc-2000 local (ET, CT, MT, PT)
Sun AM Net: 29.050 Mc-1200 Central


Date: Sat, 13 Mar 2004 21:55:23 -0500
From: David J Rodman MD 

Subject: {Collins} WTB: 75S-3B CW 500Hz


I am having rotten luck.  The first one I bought was damaged in 
shipping.  USPS told me forget claiming it as the package looked fine.  
The second one came just fine.  I tested it.  All OK.  My kids found the 
loose parts on the floor and threw them around.  Now the filter has a 
notable rattle and does not work.  I am pretty disappointed.  The last 
one cost me $175.  Any other ones out there?  Thanks.

Sponsored by the Collins Collectors Association http://www.collinsradio.org
Nets: Tues: 3.805 Mc-2000 Central / Thur: 3.875 Mc-2000 Central
Fri: 3.895 Mc-2000 Pacific / Sun: 14.263 Mc-2000 UTC
1st Wed (of the month) AM Net 3.880 Mc-2000 local (ET, CT, MT, PT)
Sun AM Net: 29.050 Mc-1200 Central


Date: Sat, 13 Mar 2004 19:05:04 -0800
From: "Larry Ravlin" 

Subject: {Collins} screen saver


I got my CD of the different stations from K4ZRD.  Awesome!  One of my
stations is one there check it out.

Larry L. Ravlin  AKA Laurence The Magnificent"
sheepdip@bossig.com
JESUS is LORD
Amateur Radio Operator Extra Class @ 20wpm
AA7LR
SCS 422
SCR 1475
NSCR
Member 22 man Night round star record
HighPower Rifle
Delta Wing Glider Pilot
V35 Bonanza Pilot
NAUI Certified



Sponsored by the Collins Collectors Association http://www.collinsradio.org
Nets: Tues: 3.805 Mc-2000 Central / Thur: 3.875 Mc-2000 Central
Fri: 3.895 Mc-2000 Pacific / Sun: 14.263 Mc-2000 UTC
1st Wed (of the month) AM Net 3.880 Mc-2000 local (ET, CT, MT, PT)
Sun AM Net: 29.050 Mc-1200 Central


Date: Sun, 14 Mar 2004 01:11:52 -0400
From: Fred or Helen Archibald 

Subject: {Collins} Re: R-388 VFO alignment


Hi again, Rex,

Aligning the R-388 PTO is tedious, but actually easier to do than to 
describe! The same technique will work with nearly all Collins PTOs, 
although others have different frequency ranges.

First, assuming the 70E-15 PTO is already out of the radio, remove the 2 
1/2' metal mounting disk in front of the tubes, V001, and the hex cap over 
the spread coil adjustment. Make sure that the lock collar on the little 
shaft inside is loose, and that the little shaft can be turned (not always 
easy)-be gentle- you definitely don't want to damage the shaft! Replace 
V001 and its shield, but not the metal disk. Of course you must do the 
alignment with dubious capacitors/resistors replaced,  high emission 6BA6s 
and tube shields installed, lubrication completed, and with the PTO coil 
cover screwed firmly in place. Remove, carefully clean, and reinstall the 
little tensioned grounding spring riding on the PTO shaft: it must make 
good electrical contact with the shaft!

Now make a jig so that you can determine when you have rotated the shaft 
exactly 1 turn and exact multiples of 1 turn. There are lots of ways to do 
it, but I solder a 1" piece of wire to a solder lug and fasten the lug to 
the standoff supporting the 2 1/2" disc on the front of the PTO (between 
the tubes), so that the wire stands up vertically. Glue a 3" dia. cardboard 
disc with a 1/4" hole in the middle to a little knob with a setscrew that 
you can fasten to the PTO shaft. Make an index mark on the edge of the 
disc, and set the vertical wire index just behind the disc, with the end 
bent over the edge of the disc to sit in front of the index mark.

Hook up the PTO to +150VDC (regulated) and 6VAC, let it warm up at least 30 
min, then check that the PTO output waveform with a scope-it should be a 
very clean sine wave with no erratic jumps or spikes in the trace as you 
turn the PTO through its range. Don't try to align the PTO if it isn't 
working properly!

Attach a frequency counter to the PTO coax and set the PTO frequency to 2.5 
MHz, the middle of the PTO's 3-2 MHz range. Lock the knob and attached 
cardboard disk to the shaft with the setscrew so that the disk index mark 
lines up with the index wire, and the counter reads exactly 2500.0 kHz. Now 
turn the knob and shaft exactly 5 turns clockwise, record the readings at 
each turn (100 kHz interval), then 10 turns counterclockwise and record the 
reading at each turn. If the PTO alignment is perfect you'll get 2,000.0 
and 3000.0 as your end readings and each full turn will change the 
frequency by exactly 100 kHz.
Since your PTO is probably not perfect, you will see your tracking error at 
each of the 10 points as a reading slightly greater or less than exact 
multiples of 100 kHz.

Reset to 2500.0, remove the knob and disc, and turn the spread coil (L002) 
shaft an eighth turn clockwise, reinstall the knob and shaft to align with 
the index wire at exactly 2500.0 kHz. Re-check your endpoints. If they are 
closer to  2000.0 and 3000.0 than before, you're going in the right 
direction, if they're farther off from exactly 10 turns equaling exactly 
1000 kHz, turn the spread coil shaft a quarter turn counterclockwise, reset 
to 2500, and repeat the endpoint measurements. Seeing how much (what 
percentage) of the PTO tracking error an eighth turn in the spread coil 
shaft cancels will tell you how much  the shaft needs to be turned to 
completely cancel the spread error. The response to adjustment of the 
spread coil is fairly linear. After each spread coil adjustment the knob 
and disk MUST be reset so that the wire aligns at exactly 2500.0 kHz. 
Repeat this sequence until exactly 10 turns gives exactly 1000 kHz 
frequency change.

It's very important to appreciate that turning the spread coil shaft 
changes BOTH the spread (kHz/turn) and the absolute frequency. This is why 
you must loosen the knob on the shaft and re-align the index mark on the 
disk with the wire at 2500.0 after each spread coil adjustment.

You should be able to get the ends (+/- exactly 5.00 turns) to track within 
+/- 2 kHz of the center of 2500.0. A good PTO will have range ends within 
+/-1 kHz of the centre. Starting from 2500, one endpoint may be slightly 
farther out than the other: you need to go for the best fit.
After setting the 2000, 2500, and 3000 kHz points you may notice a small 
remaining error that varies in an uneven fashion as you move across the 
range. This can only be corrected by readjusting the stack of metal shims 
that the coil guide rollers run on in the PTO can: you really don't want to 
go there! In most PTOs this error is less than 1 kHz/100 kHz, and isn't 
worth worrying about.
There is one situation in which you might want to touch those shims: if the 
range is very asymmetric, for example 2000 and 2500 are dead on (5.00 
turns), while 5.00 turns above 2500 gives you 3007 instead of 3000. In that 
case you would adjust the shims toward the rear of the PTO-replacing the 
can after each adjustment, and probably spend another 4 hours in tedious 
trial and error for best fit!

Instead of struggling with re-tightening the locking collar on the spread 
coil shaft, I put a tiny dab of RTV silicone sealant from the shaft to the 
wall: it's much easier to remove if you ever need to do this again. Leave 
the hex plug off until the sealant has cured-you don't want to seal acetic 
acid vapors into the PTO!

Reinstall the VFO set to 2500 kHz, leave the setscrews loose on the 
coupling, and set the MHz dial to 7.0 MHz, kHz dial on the radio to 0, and 
the fiducial line to the center of the window. Put the crystal calibrator 
on, set the (hopefully calibrated) BFO to center frequency, and carefully 
adjust the PTO shaft to give the zero beat with the fiducial line on 0. 
Tighten the coupling, check the kHz knob for smooth operation, and tune 
across the dial. The 100kHz cal points should now fall on the kHz dial 0, 
+/- the small remaining error you couldn't remove.

After 50 years these PTOs are pretty well stabilized and seem hold their 
re-alignments very well. I have the measurements on an R-388 I did in 1983 
and it's not changed at all since!
Courage!
73
Fred VE1FA



At 08:42 PM 11/03/2004, you wrote:
>Hi Fred,
>
>Thank you very much for all of this very useful information.
>
>In addition to the R-388, I have a 51J-4 which has the PTO "spread" (end
>points) significantly out of spec.
>I obtained a replacement PTO which had the broken coax center conductor that
>you mentioned! The end points on the replacement PTO were also out of
>adjustment! I attempted to adjust the replacement PTO end points by powering
>the PTO from a regulated power supply and used a frequency counter and
>general coverage receiver to track PTO frequency, but I found that the end
>points were relatively unresponsive to the adjustment coil. If you could
>provide your PTO spread adjustment procedure, maybe I can get one of the
>PTOs to track properly. I will also replace the capacitors per your
>description, before I attempt another end point adjustment.
>
>Thanks again for all your help.
>
>Rex/K2AM
>
>======================================================================
>----- Original Message -----
>From: "Fred or Helen Archibald" 
>To: "A6AU6Z" 
>Sent: Thursday, March 11, 2004 4:36 PM
>Subject: Re: R-388 VFO Matchstick Capacitors
>
>
> > Hi Rex,
> >
> > There are three 0.01uF capacitors in the R-388's 70E-15 VFO, namely C-005,
> > C-006, and C-008. Probably because of the very limited space, Collins used
> > quite small, long, thin cylindrical brown plastic caps -with dimensions
> > like the old wooden matches, and which frequently short internally! C005+6
> > are plate bypasses under the tube sockets, and C008, the osc feedback cap,
> > is in the VFO can. Failure of any will make the VFO work erratically or
> > usually not at all. If you have the VFO out, I'd replace all 3 as a matter
> > of course. Incidentally, I've seen some 70E-15s where C005+6 are short
> > tubular ceramics, and they're fine as is.
> >
> > Don't be afraid to open the VFO can on the bench -if you're into such
> > repairs. Just remove the three small screws and carefully pull the can off
> > its O-ring. While you're there, carefully re-lube the slug lag screw and
> > O-ring with silicone or moly grease-very sparingly. Since they will be
>pink
> > and dead, you can also discard the dessicant packages you find. Healthy
> > ones are blue, and the ones you find don't dehydrate (regenerate) properly
> > in an oven (in my experience), so you're better off without them. If
>you're
> > really keen, you can replace them with some sort of little porous cylinder
> > of fresh silica gel taped to one of the rear bearing support posts. Don't
> > use Drierite or other salts-based dessicants!!
> >
> > Be sure to replace C008 with a high-quality cylindrical cap (0.01uF
> > at >200V, polyester, polystyrene, or Mylar) and clamp it exactly where the
> > original cap was. Try to get a replacement no larger than the original.
> > Don't disturb any other wires or components in the can if you want to keep
> > your VFO linearity.
> >
> > Note the little coil with its adjustment behind the threaded cap: that's
> > the "spread" adjustment to make each 360 deg.turn of the VFO shaft and
>dial
> > exactly 100 kHz. Let me know if you need a procedure for setting the
> > spread. Collins spec is that your VFO scale should not be out more than 3
> > kHz in the 1000 kHz range of the VFO. Using a good frequency meter and
>some
> > patience to set the spread, you can usually do better than that. When you
> > re-seal the VFO can, do it after letting the VFO equilibrate in a warm dry
> > place with as dry air as possible-definitely not a damp basement! Placing
> > the VFO over a 40W trouble light until it's very warm (but not too hot to
> > touch) prior to closing the can is one way.
> >
> > Another common 51J VFO problem is that the output coax center conductor
> > fatigues and breaks where it's soldered to the tube V-002 or mixer socket
> > pin. An easy fix, but impossible to see in the radio if the break is under
> > V002! Also, confirm that the VR tube (0A2) is glowing violet.
> >
> > Finally, there is a simple little modification you may wish to add. Lookin
>g
> > at the schematic you will see that there is a 4kohm dropping resistor on
> > the plate of the OA2 regulator tube, just where the VFO picks up its B+.
>VR
> > tubes are noisy. If you put a 0.1 uF (at >250V) cap from ground to the
> > plate of the 0A2, with the radio on, RF gain at 10, and no signal in, you
> > will hear a distinct decrease in background noise when the cap is in the
> > circuit. You might think that C005+6 in the VFO would clean up the B+
> > sufficiently, (Collins obviously did) but that doesn't seem to be the
> > case!  The 0.1 uF cap is easily mounted beside the 4kohm dropping resistor
> > (R181). Some individual VR tubes are worse than others, but you should
>hear
> > a reduction in background noise in all cases. While you're there, put a
> > voltmeter, or a 'scope from the VR plate to ground, and be sure that; (A)
> > the DC voltage is 150 +/- a couple of volts; and (B) that the voltage is
> > steady for several minutes. If it's not, check R-181 and replace the VR
>tube.
> > Hope you find this useful, Rex!
> > 73
> > Fred VA1FA
> >
> > At 11:59 AM 11/03/2004, you wrote:
> > >Hi Fred,
> > >
> > >You posted the following comments to the Collins' reflector:
> > >
> > >"I've bought both a "repairable" R-388 and a "repairable" R-392 from Fair
> > >Radio.
> > >The R-388 was well-packed, came promptly, and was a very nice, clean
>unit,
> > >-but  didn't work out of the box. Replacing the 2 notorious "matchstick"
> > >capacitors in the PTO gave me a beautifully working R-388, which, 14
>years
> > >later, I am still enjoying."
> > >
> > >I have an R-388 and I was wondering specifically which capacitors in the
>PTO
> > >you refer to as "matchstick"; are they in the PTO can or in the
>compartment
> > >below the two PTO tubes? Do you have the capacitor numbers?
> > >
> > >Any information you could provide would be greatly appreciated.
> > >
> > >Thanks,
> > >
> > >Rex/K2AM
> >
> > Helen or Fred Archibald
> > mailto:hfarchibald@ns.sympatico.ca
> >
> >

Helen or Fred Archibald
mailto:hfarchibald@ns.sympatico.ca

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Date: Sat, 13 Mar 2004 22:46:29 -0600
From: John Robinson 

Subject: {Collins} Collins 312B-5 Station Control For Sale


This unit is in very good condition and has the connect cable with it
for the kwm2. It's a winged emblem and the s/n is 155. I'll take $750
plus shipping from NW AR. I can e-mail pictures if anyone is interested.

I also have a Collins 516E-1 DC Power Supply, a Collins 351D-2, and a
Collins Filter (52 Ohm type, like a low pass or something) model number
unknown that I need to sell but haven't put prices with yet. If anyone
is interested in any of those items let me know and I'll work out a
price with you.

Thanks,
John  kd5nfx

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Date: Sun, 14 Mar 2004 10:13:32 -0500
From: "Frederick W. Holmes, W1SKU" 

Subject: {Collins} KWM-1 For Sale


Hello to All,

The KWM-1 and accessories has been sold. Thanks to all that inquired.

73 de Fred, W1SKU
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Date: Sun, 14 Mar 2004 11:19:17 -0500
From: Chris Willson 

Subject: {Collins} The newbie is back...coupla questions


Hello everyone:

Some of you may remember that I posted some elementary q's in the last
little while about advice on this S-line I was thinking about
buying..... brought it home yesterday and just getting started......
playing around with the 75S-3 first.  32S-1 will come later; I think I
am going to replace the power cables on the P/S first.

On the 75S-3:  I think I've read about this somewhere..... there seems
to be an excessive amount of 60 Hz hum in the speaker...normal, or is
there an accepted fix?

Also, as I suspected the CW filter is missing, and I'm thinking about
putting the rig back into its original shipping condition, not that I
really need the filter anyway,.... but anyone out there know what the
correct part number is, and where I can find one of these??

Chris
VE2CZ
PS Sending my dues into the CCA first thing Monday!

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Date: Sun, 14 Mar 2004 08:50:31 -0800 (PST)
From: Rick Dorsch 

Subject: {Collins} Collins KWM-380 (new parts for sale)


I have the following new parts for sale.  These items
were owned by HC1HC and were purchased from Nebraska
Radio.  Add $3 per order for postage in the USA.

Dr. Rick Dorsch  NE8Z/HC1MD
P.O. Box 616
Hamburg, MI 48139     ne8z@yahoo.com

-----------------------------------------------------
Brand new Collins KWM-380 parts for sale:

638-6931-001 Display Board, empty  $26
638-6929-001 Control Board, complete $113
638-6904-001 A3 low pass filter  $280
638-6924-001 Oscillator oven  $180
380MP drivers  $70
380MP final  $138
Kiron M3A memory board  $125
Wabash reed relay (8 units at $3 each)  $24
Wabash 1017-20-1 (2 units at $5 each)  $10
229-9702-010 Rotaswitch encoder  $40
266-5424-010 20 amp toggle switch $9
281-0659-010 single knob  $4
7331 380 pilot lamps (2 units at $2 each)  $4
BN38/BN716  380 black trim nuts (4 nuts) $3
450-0158-010 KWM380 meter  $23
266-7508-340 switch banks  $20
376-0276-050 af/rf gain pot  $15

Signal One CX11-A parts
MRF422MP matched pair  $120
MRF426MP matched pair  $79


__________________________________
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Date: Sun, 14 Mar 2004 11:18:33 -0600
From: 

Subject: {Collins} Need info DX Engineering LC-1-KWM


Does anyone know what this is?  I just a KWM-2A with one in it.  It is
mounted by attaching the the pa cage lid screws and plugs in at the base
of V4, a 6AZ8.

thanks & 73,
Phil
W5BVB

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Date: Sun, 14 Mar 2004 11:04:02 -0800
From: "Ben Davis" 

Subject: {Collins} filter


I have a filter which I think is for the 75S-3 but I am not sure what it =
is for.

  Numbers on the filter are 526-7466-009  and  293-1127-00

  the filter is rectangle with 2 pins at each end that looks like it =
pluges into a xtal socket with a screw lug just inside of the two pins.

I hope some one out there knows what it is.

thank you=20

Ben W6TCD
bfdavis@davisvill.org
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Date: Sun, 14 Mar 2004 17:33:37 -0500
From: 

Subject: {Collins} Re: R-388 VFO alignment


In my opinion, correcting tracking errors using the shims is not all that difficult if you keep the following in mind:

1. Place 4 index marks on the disk so you can check tracking every quarter turn (25 kHz) Take care to place these accurately.

2. You don't need to reinstall the can completely each time you make an adjustment. You have to put it in place, but you don't need to fasten it. Watch the counter to confirm this. It's probably best to remove the O-ring, which you'll probably want to replace anyway.

3. By all means, don,t start this if you think you might be interrupted.

4. Don't loosen the clamping screw more than necessary to let you move the shims.

5. Start at one end. With the can in place, read the counter. Remove the can, adjust only the shims which are under the roller, replace the can to check. Repeat until you're within 200 Hz or so, then turn thr shaft 1/4 turn and repeat, remembering that the frequency should now be 25 kHz higher (or lower). Continue until you've done all 41 points. Don't forget to tighten the clamp screw when you're done.

Once you've done a few points, it goes surprisingly fast. It took me less than an hour, and the total tracking error has been 300 Hz or less ever since.

If you're replacing the O-ring, use Neoprene or other material which is compatible with petroleum products. These rings are available at bearing shops for a few bucks. Grease it lightly before assembly.

73

Bob, VE3TOU
> 
> From: Fred or Helen Archibald 
> Date: 2004/03/14 Sun AM 12:11:52 EST
> To: "A6AU6Z" 
> CC: 
> Subject: {Collins} Re: R-388 VFO alignment
> 
> Hi again, Rex,
> 
> Aligning the R-388 PTO is tedious, but actually easier to do than to 
> describe! The same technique will work with nearly all Collins PTOs, 
> although others have different frequency ranges.
> 
> First, assuming the 70E-15 PTO is already out of the radio, remove the 2 
> 1/2' metal mounting disk in front of the tubes, V001, and the hex cap over 
> the spread coil adjustment. Make sure that the lock collar on the little 
> shaft inside is loose, and that the little shaft can be turned (not always 
> easy)-be gentle- you definitely don't want to damage the shaft! Replace 
> V001 and its shield, but not the metal disk. Of course you must do the 
> alignment with dubious capacitors/resistors replaced,  high emission 6BA6s 
> and tube shields installed, lubrication completed, and with the PTO coil 
> cover screwed firmly in place. Remove, carefully clean, and reinstall the 
> little tensioned grounding spring riding on the PTO shaft: it must make 
> good electrical contact with the shaft!
> 
> Now make a jig so that you can determine when you have rotated the shaft 
> exactly 1 turn and exact multiples of 1 turn. There are lots of ways to do 
> it, but I solder a 1" piece of wire to a solder lug and fasten the lug to 
> the standoff supporting the 2 1/2" disc on the front of the PTO (between 
> the tubes), so that the wire stands up vertically. Glue a 3" dia. cardboard 
> disc with a 1/4" hole in the middle to a little knob with a setscrew that 
> you can fasten to the PTO shaft. Make an index mark on the edge of the 
> disc, and set the vertical wire index just behind the disc, with the end 
> bent over the edge of the disc to sit in front of the index mark.
> 
> Hook up the PTO to +150VDC (regulated) and 6VAC, let it warm up at least 30 
> min, then check that the PTO output waveform with a scope-it should be a 
> very clean sine wave with no erratic jumps or spikes in the trace as you 
> turn the PTO through its range. Don't try to align the PTO if it isn't 
> working properly!
> 
> Attach a frequency counter to the PTO coax and set the PTO frequency to 2.5 
> MHz, the middle of the PTO's 3-2 MHz range. Lock the knob and attached 
> cardboard disk to the shaft with the setscrew so that the disk index mark 
> lines up with the index wire, and the counter reads exactly 2500.0 kHz. Now 
> turn the knob and shaft exactly 5 turns clockwise, record the readings at 
> each turn (100 kHz interval), then 10 turns counterclockwise and record the 
> reading at each turn. If the PTO alignment is perfect you'll get 2,000.0 
> and 3000.0 as your end readings and each full turn will change the 
> frequency by exactly 100 kHz.
> Since your PTO is probably not perfect, you will see your tracking error at 
> each of the 10 points as a reading slightly greater or less than exact 
> multiples of 100 kHz.
> 
> Reset to 2500.0, remove the knob and disc, and turn the spread coil (L002) 
> shaft an eighth turn clockwise, reinstall the knob and shaft to align with 
> the index wire at exactly 2500.0 kHz. Re-check your endpoints. If they are 
> closer to  2000.0 and 3000.0 than before, you're going in the right 
> direction, if they're farther off from exactly 10 turns equaling exactly 
> 1000 kHz, turn the spread coil shaft a quarter turn counterclockwise, reset 
> to 2500, and repeat the endpoint measurements. Seeing how much (what 
> percentage) of the PTO tracking error an eighth turn in the spread coil 
> shaft cancels will tell you how much  the shaft needs to be turned to 
> completely cancel the spread error. The response to adjustment of the 
> spread coil is fairly linear. After each spread coil adjustment the knob 
> and disk MUST be reset so that the wire aligns at exactly 2500.0 kHz. 
> Repeat this sequence until exactly 10 turns gives exactly 1000 kHz 
> frequency change.
> 
> It's very important to appreciate that turning the spread coil shaft 
> changes BOTH the spread (kHz/turn) and the absolute frequency. This is why 
> you must loosen the knob on the shaft and re-align the index mark on the 
> disk with the wire at 2500.0 after each spread coil adjustment.
> 
> You should be able to get the ends (+/- exactly 5.00 turns) to track within 
> +/- 2 kHz of the center of 2500.0. A good PTO will have range ends within 
> +/-1 kHz of the centre. Starting from 2500, one endpoint may be slightly 
> farther out than the other: you need to go for the best fit.
> After setting the 2000, 2500, and 3000 kHz points you may notice a small 
> remaining error that varies in an uneven fashion as you move across the 
> range. This can only be corrected by readjusting the stack of metal shims 
> that the coil guide rollers run on in the PTO can: you really don't want to 
> go there! In most PTOs this error is less than 1 kHz/100 kHz, and isn't 
> worth worrying about.
> There is one situation in which you might want to touch those shims: if the 
> range is very asymmetric, for example 2000 and 2500 are dead on (5.00 
> turns), while 5.00 turns above 2500 gives you 3007 instead of 3000. In that 
> case you would adjust the shims toward the rear of the PTO-replacing the 
> can after each adjustment, and probably spend another 4 hours in tedious 
> trial and error for best fit!
> 
> Instead of struggling with re-tightening the locking collar on the spread 
> coil shaft, I put a tiny dab of RTV silicone sealant from the shaft to the 
> wall: it's much easier to remove if you ever need to do this again. Leave 
> the hex plug off until the sealant has cured-you don't want to seal acetic 
> acid vapors into the PTO!
> 
> Reinstall the VFO set to 2500 kHz, leave the setscrews loose on the 
> coupling, and set the MHz dial to 7.0 MHz, kHz dial on the radio to 0, and 
> the fiducial line to the center of the window. Put the crystal calibrator 
> on, set the (hopefully calibrated) BFO to center frequency, and carefully 
> adjust the PTO shaft to give the zero beat with the fiducial line on 0. 
> Tighten the coupling, check the kHz knob for smooth operation, and tune 
> across the dial. The 100kHz cal points should now fall on the kHz dial 0, 
> +/- the small remaining error you couldn't remove.
> 
> After 50 years these PTOs are pretty well stabilized and seem hold their 
> re-alignments very well. I have the measurements on an R-388 I did in 1983 
> and it's not changed at all since!
> Courage!
> 73
> Fred VE1FA
> 
> 
> 
> At 08:42 PM 11/03/2004, you wrote:
> >Hi Fred,
> >
> >Thank you very much for all of this very useful information.
> >
> >In addition to the R-388, I have a 51J-4 which has the PTO "spread" (end
> >points) significantly out of spec.
> >I obtained a replacement PTO which had the broken coax center conductor that
> >you mentioned! The end points on the replacement PTO were also out of
> >adjustment! I attempted to adjust the replacement PTO end points by powering
> >the PTO from a regulated power supply and used a frequency counter and
> >general coverage receiver to track PTO frequency, but I found that the end
> >points were relatively unresponsive to the adjustment coil. If you could
> >provide your PTO spread adjustment procedure, maybe I can get one of the
> >PTOs to track properly. I will also replace the capacitors per your
> >description, before I attempt another end point adjustment.
> >
> >Thanks again for all your help.
> >
> >Rex/K2AM
> >
> >======================================================================
> >----- Original Message -----
> >From: "Fred or Helen Archibald" 
> >To: "A6AU6Z" 
> >Sent: Thursday, March 11, 2004 4:36 PM
> >Subject: Re: R-388 VFO Matchstick Capacitors
> >
> >
> > > Hi Rex,
> > >
> > > There are three 0.01uF capacitors in the R-388's 70E-15 VFO, namely C-005,
> > > C-006, and C-008. Probably because of the very limited space, Collins used
> > > quite small, long, thin cylindrical brown plastic caps -with dimensions
> > > like the old wooden matches, and which frequently short internally! C005+6
> > > are plate bypasses under the tube sockets, and C008, the osc feedback cap,
> > > is in the VFO can. Failure of any will make the VFO work erratically or
> > > usually not at all. If you have the VFO out, I'd replace all 3 as a matter
> > > of course. Incidentally, I've seen some 70E-15s where C005+6 are short
> > > tubular ceramics, and they're fine as is.
> > >
> > > Don't be afraid to open the VFO can on the bench -if you're into such
> > > repairs. Just remove the three small screws and carefully pull the can off
> > > its O-ring. While you're there, carefully re-lube the slug lag screw and
> > > O-ring with silicone or moly grease-very sparingly. Since they will be
> >pink
> > > and dead, you can also discard the dessicant packages you find. Healthy
> > > ones are blue, and the ones you find don't dehydrate (regenerate) properly
> > > in an oven (in my experience), so you're better off without them. If
> >you're
> > > really keen, you can replace them with some sort of little porous cylinder
> > > of fresh silica gel taped to one of the rear bearing support posts. Don't
> > > use Drierite or other salts-based dessicants!!
> > >
> > > Be sure to replace C008 with a high-quality cylindrical cap (0.01uF
> > > at >200V, polyester, polystyrene, or Mylar) and clamp it exactly where the
> > > original cap was. Try to get a replacement no larger than the original.
> > > Don't disturb any other wires or components in the can if you want to keep
> > > your VFO linearity.
> > >
> > > Note the little coil with its adjustment behind the threaded cap: that's
> > > the "spread" adjustment to make each 360 deg.turn of the VFO shaft and
> >dial
> > > exactly 100 kHz. Let me know if you need a procedure for setting the
> > > spread. Collins spec is that your VFO scale should not be out more than 3
> > > kHz in the 1000 kHz range of the VFO. Using a good frequency meter and
> >some
> > > patience to set the spread, you can usually do better than that. When you
> > > re-seal the VFO can, do it after letting the VFO equilibrate in a warm dry
> > > place with as dry air as possible-definitely not a damp basement! Placing
> > > the VFO over a 40W trouble light until it's very warm (but not too hot to
> > > touch) prior to closing the can is one way.
> > >
> > > Another common 51J VFO problem is that the output coax center conductor
> > > fatigues and breaks where it's soldered to the tube V-002 or mixer socket
> > > pin. An easy fix, but impossible to see in the radio if the break is under
> > > V002! Also, confirm that the VR tube (0A2) is glowing violet.
> > >
> > > Finally, there is a simple little modification you may wish to add. Lookin
> >g
> > > at the schematic you will see that there is a 4kohm dropping resistor on
> > > the plate of the OA2 regulator tube, just where the VFO picks up its B+.
> >VR
> > > tubes are noisy. If you put a 0.1 uF (at >250V) cap from ground to the
> > > plate of the 0A2, with the radio on, RF gain at 10, and no signal in, you
> > > will hear a distinct decrease in background noise when the cap is in the
> > > circuit. You might think that C005+6 in the VFO would clean up the B+
> > > sufficiently, (Collins obviously did) but that doesn't seem to be the
> > > case!  The 0.1 uF cap is easily mounted beside the 4kohm dropping resistor
> > > (R181). Some individual VR tubes are worse than others, but you should
> >hear
> > > a reduction in background noise in all cases. While you're there, put a
> > > voltmeter, or a 'scope from the VR plate to ground, and be sure that; (A)
> > > the DC voltage is 150 +/- a couple of volts; and (B) that the voltage is
> > > steady for several minutes. If it's not, check R-181 and replace the VR
> >tube.
> > > Hope you find this useful, Rex!
> > > 73
> > > Fred VA1FA
> > >
> > > At 11:59 AM 11/03/2004, you wrote:
> > > >Hi Fred,
> > > >
> > > >You posted the following comments to the Collins' reflector:
> > > >
> > > >"I've bought both a "repairable" R-388 and a "repairable" R-392 from Fair
> > > >Radio.
> > > >The R-388 was well-packed, came promptly, and was a very nice, clean
> >unit,
> > > >-but  didn't work out of the box. Replacing the 2 notorious "matchstick"
> > > >capacitors in the PTO gave me a beautifully working R-388, which, 14
> >years
> > > >later, I am still enjoying."
> > > >
> > > >I have an R-388 and I was wondering specifically which capacitors in the
> >PTO
> > > >you refer to as "matchstick"; are they in the PTO can or in the
> >compartment
> > > >below the two PTO tubes? Do you have the capacitor numbers?
> > > >
> > > >Any information you could provide would be greatly appreciated.
> > > >
> > > >Thanks,
> > > >
> > > >Rex/K2AM
> > >
> > > Helen or Fred Archibald
> > > mailto:hfarchibald@ns.sympatico.ca
> > >
> > >
> 
> Helen or Fred Archibald
> mailto:hfarchibald@ns.sympatico.ca
> 
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> 
> 

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Date: Sun, 14 Mar 2004 20:32:48 -0600
From: "Albert Furlow" 

Subject: {Collins} KWM-380 does not RCV or Transmit ??


Hello all I have a KWM-380 it turns on, but there is not RCV. and when I press the PTT, no transmit. Does anyone know what could be wrong with this great rig? 
 AL KA1FFO 
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Date: Sun, 14 Mar 2004 22:54:23 -0500
From: 

Subject: {Collins} Need Four RCA and/or JAN 811A tubes for 30L-1


Greetings:
I am on the hunt for four RCA or JAN 811A tubes for my 30L-1.  If you have some to sell or trade please contact me via email or phone.  Please quote price, INCLUDING SHIPPING to ZIP 29609.  

Many thanks...

Cheers,

Al Link, K4ICL
ALink@K4ICL.com
139 Turner Circle
Greenville, SC 29609
864 420-4652
www.K4ICL.com

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Date: Mon, 15 Mar 2004 09:01:14 -0600
From: "Freeberg, Scott (STP)" 

Subject: {Collins} Re: The newbie is back...coupla questions


Congratulations on making the move Chris and buying your classic Collins =
S-line! =20

No, there shouldn't be any 60 hz hum in the speaker.  High voltage =
capacitors are usually the problem.  I haven't had to replace mine in =
the 75S3B yet.  I don't recall if the HV cap is a chassis mounted can or =
caps under the chassis.  I don't seem to recall a can on the chassis.  =
Its my firm belief that there's no such thing as a good old electrolytic =
cap, just bad ones and ones going bad, so I'm not surprised to hear =
about hum.  My suggestion is to open up the receiver, find out the =
physical size of the originals, find out the values from the manual, =
order some replacements from Mouser  at www.mouser.com

I have a couple of Collins receivers that have way too much hum and need =
the HV's replaced.  My 75A1 is totally down due to hum.  My 75A4 is =
fully functional but I've been meaning to replace the HV caps for a =
couple of years :)  About 3 years ago one of the HV sections of a three =
section can went bad.  I snipped the wire off and put a new hv axial cap =
below the chassis.  Short term problem solved, long term problem still =
there.  There's two other sections that are functional but probably =
going bad.  Since I'm on a roll, my 30L1 is totally down due to bad =
electrolytics.  The HV dropped to 800 or 900 volts.  Several of the HV =
caps have the vents ruptured.  Darn electrolytics.  So I have to order =
some new replacements and replace all of them.=20

73, Scott WA9WFA

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Date: Mon, 15 Mar 2004 10:07:03 -0600
From: Tony Sokol 

Subject: {Collins} Re: Need Four RCA and/or JAN 811A tubes for 30L-1


Hi Al,
    Contact Frank Krize at 601-442-0973.  He did have a good stock of 
NOS JAN 811A's at a good price.  Frank is a great source for just about 
any tube you need.  Here is Frank's info:

Krize Electronics
Rt. 2 - Box 423
Natchez, MS  39120

601-442-0973
k5svc@bkbank.com

        73
Tony - W9JXN



K4ICL@K4ICL.com wrote:

>Greetings:
>I am on the hunt for four RCA or JAN 811A tubes for my 30L-1.  If you have some to sell or trade please contact me via email or phone.  Please quote price, INCLUDING SHIPPING to ZIP 29609.  
>
>Many thanks...
>
>Cheers,
>
>Al Link, K4ICL
>ALink@K4ICL.com
>139 Turner Circle
>Greenville, SC 29609
>864 420-4652
>www.K4ICL.com
>
>www.UREGS.org for Equipment Condition Rating Standards
>Sponsored by the Collins Collectors Association http://www.collinsradio.org
>Nets: Tues: 3.805 Mc-2000 Central / Thur: 3.875 Mc-2000 Central
>Fri: 3.895 Mc-2000 Pacific / Sun: 14.263 Mc-2000 UTC
>1st Wed (of the month) AM Net 3.880 Mc-2000 local (ET, CT, MT, PT)
>Sun AM Net: 29.050 Mc-1200 Central
>
>
>
>  
>



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Date: Mon, 15 Mar 2004 09:00:32 -0800
From: "Ben Davis" 

Subject: {Collins} F/S  8168/4CX1000A 


I have a NEW 8168/4CX1000A for sale.  It is still in the factory sealed =
raper.  It has a couple of fins dented but should be ok.
asking 150.00 and I will ship.

Ben W6TCD
bfdavis@davisvill.org
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Date: Mon, 15 Mar 2004 10:51:29 -0700
From: "Mark Hammond" 

Subject: {Collins} COLLINS Parts For Sale


I have the following COLLINS Parts for sale :
2 - # 57-634-5 Tuning Slugs, New $10.00 each
1 - KWM/S-Line Amphenol 544-2825-002 14 position Crystal Socket Assy, New $ 50.00. 
1 - KWM/S-Line Amphenol 544-2825-002 14 position Crystal Socket Assy New, missing one contact $ 25.00. 
1 - Under Chassis Crystal holding Assy. Felt Pad New $5.00
2 - Sets 278-0293-00 A and B IF Cans New $50.00 each set.
1 - 30L1 Meter Face Mfg by Baerlett Instrument Co. New $50.00
1 - 75S Meter Face  Mfg by Baerlett Instrument Co. New $50.00
1 - 32S3A Tag that glues over the lettering on the 32S3 Escutcheon when converting to the A Model New. $25.00
1 - Each 28.4mhz, 28.6mhz, 28.8mhz, and 28.0mhz KWM/S-Line Crystals with 1969 Date Codes. Used $10.00 each.
3 - each KWM/S-Line Pointer knobs with Set Screws. Used $15.00 each
1 - KWM/S-Line Pointer knob with spring keeper. $10.00
1 - Book "Problems and Solutions in KWM-1, KWM-2/2A and S-Line" by Frank Andrei $10.00
2 - Plastic Risers for front feet on KWM/S-Line $15.00 pair 
1 - 100KC Calibrator Crystal Date Code 10-64. This is the round one for 75A series units $30.00

Shipping for each item is extra. Offers considered. I can provide pictures upon request.

Thanks for your interest.
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Nets: Tues: 3.805 Mc-2000 Central / Thur: 3.875 Mc-2000 Central
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Date: Mon, 15 Mar 2004 11:33:30 -0700
From: "Mark Hammond" 

Subject: {Collins} KWM-380 Parts


Hello:
I have the following KWM-380 parts for sale:

1 - Collins KWM-380 Performance Modification Parts Kit. These are the parts needed to install the Collins Modifications for the 380. The kit contains most of the parts, with the exception of the WARC Frequency Modification Kit and the Audio Low Pass Filter Kit. New $50.00 plus shipping.

1 - AC-3801 Noise Blanker Board. I bought this board from Surplus Sales of Nebraska a few years ago. They sold them as 90% complete, with some missing parts. The missing parts seem to be the Noise Blanker Carrier Plate and the connecting cables. Comes with circuit diagrams and installation instructions. New $50.00 plus shipping.

Thanks for your interest.

73, Mark
 
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Date: Mon, 15 Mar 2004 14:07:23 -0800
From: "Clair Truax" 

Subject: {Collins} 516F-2


It finally happened!  My faithful 516F-2 power supply smoked (still trying
to get the smoke smell out of the house)!  The burned part appears to be the
lower of the two chokes which are mounted one over the other on the right
rear of the chassis.  They are listed as "L1 and L2" on the schematic and
have a part number of 668-0300-000.

I would appreciate hearing from anyone who might have a set of these, or who
can suggest a source/part number for these.  I also figure on replacing the
caps as long as I'm into it.

Thank you,
Clair (KJ6NJ)

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Date: Mon, 15 Mar 2004 20:56:05 -0400
From: "Kathleen Curtis" 

Subject: {Collins} Re: KWM-380 does not RCV or Transmit ??


Does it Beep-Beep-Beep? if it does, bad news. if it does not, maybe
something else.  maybe not so bad. info you gave is not enough. however,
this question will be best directed to wayne spring W6RID.
Ira
----- Original Message -----
From: "Albert Furlow" 
To: 
Sent: Sunday, March 14, 2004 10:32 PM
Subject: {Collins} KWM-380 does not RCV or Transmit ??


> Hello all I have a KWM-380 it turns on, but there is not RCV. and when I
press the PTT, no transmit. Does anyone know what could be wrong with this
great rig?
>  AL KA1FFO
> Sponsored by the Collins Collectors Association
http://www.collinsradio.org
> Nets: Tues: 3.805 Mc-2000 Central / Thur: 3.875 Mc-2000 Central
> Fri: 3.895 Mc-2000 Pacific / Sun: 14.263 Mc-2000 UTC
> 1st Wed (of the month) AM Net 3.880 Mc-2000 local (ET, CT, MT, PT)
> Sun AM Net: 29.050 Mc-1200 Central
>

Sponsored by the Collins Collectors Association http://www.collinsradio.org
Nets: Tues: 3.805 Mc-2000 Central / Thur: 3.875 Mc-2000 Central
Fri: 3.895 Mc-2000 Pacific / Sun: 14.263 Mc-2000 UTC
1st Wed (of the month) AM Net 3.880 Mc-2000 local (ET, CT, MT, PT)
Sun AM Net: 29.050 Mc-1200 Central


Date: Tue, 16 Mar 2004 02:21:56 -0000
From: "David Edwards" 

Subject: {Collins} 75A4 lamp


I guess I should be embarrassed asking this question but as I get older I find it is sometimes easier asking advise rather then charging ahead. My 74A4 Kc dial lamp is out and I look inside but can't see an obvious lamp socket. Any advice?
Dave
WB1S
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Date: Mon, 15 Mar 2004 22:34:38 -0500
From: "Jose" 

Subject: {Collins} 30L1 heat.


Hello to all.
 
I just help a friend install a 30L1 with his Yaesu FT1000.
 
He is getting much better signal reports transmitting  with the
amplifier on than without out it…. However,
 
He has two concerns.
 
The amplifiers cabinet gets very hot (temperature wise) to the touch
after being in use for a while. Is this normal?
 
On receive, it appears that once he turns the amplifier on the receiving
signals attenuate (he said  in a particular case on 20 mts. from an S9
+10 to an S 8)
Any thoughts?
 
Will appreciate any comments.
 
Thank you
 
Jose/WB1FQW CCA # 11588
Sponsored by the Collins Collectors Association http://www.collinsradio.org
Nets: Tues: 3.805 Mc-2000 Central / Thur: 3.875 Mc-2000 Central
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Date: Tue, 16 Mar 2004 09:24:08 -0000
From: "David Edwards" 

Subject: {Collins} 75A4 Lamp


Thanks to all for the tips on the lamp.
Will tackle it tomorrow.


73
Dave
Sponsored by the Collins Collectors Association http://www.collinsradio.org
Nets: Tues: 3.805 Mc-2000 Central / Thur: 3.875 Mc-2000 Central
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Sun AM Net: 29.050 Mc-1200 Central


Date: Tue, 16 Mar 2004 09:10:05 -0400
From: "Kathleen Curtis" 

Subject: {Collins} Re: 75A4 Lamp


Hi
There are two lamps, clip mounted on the rail just below the lid.
Slides out easily.no tools required...
My mom said: a question not asked is not only stupid, but worse, it remains
unanswered.
73's
Ira
CE3AM
----- Original Message -----
From: "David Edwards" 
To: 
Sent: Tuesday, March 16, 2004 5:24 AM
Subject: {Collins} 75A4 Lamp


> Thanks to all for the tips on the lamp.
> Will tackle it tomorrow.
>
>
> 73
> Dave
> Sponsored by the Collins Collectors Association
http://www.collinsradio.org
> Nets: Tues: 3.805 Mc-2000 Central / Thur: 3.875 Mc-2000 Central
> Fri: 3.895 Mc-2000 Pacific / Sun: 14.263 Mc-2000 UTC
> 1st Wed (of the month) AM Net 3.880 Mc-2000 local (ET, CT, MT, PT)
> Sun AM Net: 29.050 Mc-1200 Central
>

Sponsored by the Collins Collectors Association http://www.collinsradio.org
Nets: Tues: 3.805 Mc-2000 Central / Thur: 3.875 Mc-2000 Central
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Sun AM Net: 29.050 Mc-1200 Central


Date: Tue, 16 Mar 2004 09:26:14 -0400
From: "Kathleen Curtis" 

Subject: {Collins} Re: KWM-380 does not RCV or Transmit ??


Albert, I would also like to add a name to which you can direct your
question:
talk to Bob kx6k@comcast.net
Ira
CE3AM  (not SSB)
----- Original Message -----
From: "Albert Furlow" 
To: 
Sent: Sunday, March 14, 2004 10:32 PM
Subject: {Collins} KWM-380 does not RCV or Transmit ??


> Hello all I have a KWM-380 it turns on, but there is not RCV. and when I
press the PTT, no transmit. Does anyone know what could be wrong with this
great rig?
>  AL KA1FFO
> Sponsored by the Collins Collectors Association
http://www.collinsradio.org
> Nets: Tues: 3.805 Mc-2000 Central / Thur: 3.875 Mc-2000 Central
> Fri: 3.895 Mc-2000 Pacific / Sun: 14.263 Mc-2000 UTC
> 1st Wed (of the month) AM Net 3.880 Mc-2000 local (ET, CT, MT, PT)
> Sun AM Net: 29.050 Mc-1200 Central
>

Sponsored by the Collins Collectors Association http://www.collinsradio.org
Nets: Tues: 3.805 Mc-2000 Central / Thur: 3.875 Mc-2000 Central
Fri: 3.895 Mc-2000 Pacific / Sun: 14.263 Mc-2000 UTC
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Sun AM Net: 29.050 Mc-1200 Central


Date: Tue, 16 Mar 2004 07:26:29 -0600
From: Gary Follett 

Subject: {Collins} Re: 30L1 heat.


The heat is pretty normal, since, as I recall, there is no blower fan. 
It would be excessive if the amp is not properly resonated, of course.

The signal loss would imply that the antenna relay is energized all the 
time, once power is applied. I would suggest unhooking the amplifier 
keying line to the FT1000 and seeing if this affects things. The FT1000 
requires an external keying relay to safely operate the older linear 
amplifiers and it is quite possible he has shorted out the internal 
linear amplifier keying circuit in the FT1000.

Gary

PS: This could offer insight into why the amp runs hotter than 
expected. If the amp is always keyed, even on receive, then it would 
tend to operate much hotter than it would with rest periods during 
receive since it draws plate current but puts out no signal. It is 
simply dissipating the plate current as heat.


On Mar 15, 2004, at 9:34 PM, Jose wrote:

> Hello to all.
>
> I just help a friend install a 30L1 with his Yaesu FT1000.
>
> He is getting much better signal reports transmitting  with the
> amplifier on than without out it
> . However,
>
> He has two concerns.
>
> The amplifiers cabinet gets very hot (temperature wise) to the touch
> after being in use for a while. Is this normal?
>
> On receive, it appears that once he turns the amplifier on the 
> receiving
> signals attenuate (he said  in a particular case on 20 mts. from an S9
> +10 to an S 8)
> Any thoughts?
>
> Will appreciate any comments.
>
> Thank you
>
> Jose/WB1FQW CCA # 11588
> Sponsored by the Collins Collectors Association 
> http://www.collinsradio.org
> Nets: Tues: 3.805 Mc-2000 Central / Thur: 3.875 Mc-2000 Central
> Fri: 3.895 Mc-2000 Pacific / Sun: 14.263 Mc-2000 UTC
> 1st Wed (of the month) AM Net 3.880 Mc-2000 local (ET, CT, MT, PT)
> Sun AM Net: 29.050 Mc-1200 Central
>
>

Sponsored by the Collins Collectors Association http://www.collinsradio.org
Nets: Tues: 3.805 Mc-2000 Central / Thur: 3.875 Mc-2000 Central
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Sun AM Net: 29.050 Mc-1200 Central


Date: Tue, 16 Mar 2004 08:23:00 -0500
From: 

Subject: {Collins} Re: THANKS ALL! Need Four RCA and/or JAN 811A tubes


Thank you all for the useful information regarding a source of 811A's. I will have the linear up and running soon.
Cheers,

Al Link, K4ICL
ALink@K4ICL.com
139 Turner Circle
Greenville, SC 29609
864 420-4652
www.K4ICL.com

www.UREGS.org for Equipment Condition Rating Standards
  ----- Original Message ----- 
  From: K4ICL@K4ICL.com 
  To: collins@listserve.com 
  Sent: Sunday, March 14, 2004 10:54 PM
  Subject: {Collins} Need Four RCA and/or JAN 811A tubes for 30L-1


  Greetings:
  I am on the hunt for four RCA or JAN 811A tubes for my 30L-1.  If you have some to sell or trade please contact me via email or phone.  Please quote price, INCLUDING SHIPPING to ZIP 29609.  

  Many thanks...

  Cheers,

  Al Link, K4ICL
  ALink@K4ICL.com
  139 Turner Circle
  Greenville, SC 29609
  864 420-4652
  www.K4ICL.com

  www.UREGS.org for Equipment Condition Rating Standards
  Sponsored by the Collins Collectors Association http://www.collinsradio.org
  Nets: Tues: 3.805 Mc-2000 Central / Thur: 3.875 Mc-2000 Central
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  1st Wed (of the month) AM Net 3.880 Mc-2000 local (ET, CT, MT, PT)
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Date: Tue, 16 Mar 2004 15:09:49 -0000
From: "Charlie, W0YG" 

Subject: {Collins} Re: 30L1 heat.


There is a blower fan inside the 30L-1.  It is small and probably inadequate
for extended key down sessions so some heat is indeed generated.  That is
probably why one sees so many of the final compartment covers discolored.

73,

Charlie, W0YG..>>


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Date: Tue, 16 Mar 2004 10:03:48 -0500
From: Chris Willson 

Subject: {Collins} 32S-1 Mods....advice?


Well, after negotiating a pretty good deal on my first S-line, (early 32S-1, 75S-3 and extremely clean... chassis is still bright, etc), it's time to have a real look under the hood and see how
40+ years in who-knows-how-many-shacks has played with the internals.

Here's my specific request for advice: does anyone know of a legit mod to the 32S-1 whereby one would add an extra tube ????. Here's what I see when looking down with the hood up:  a 12AU7 very
nicely integrated where the serial number label is supposed to be right smack in the middle of the chassis.! Also right beside the tube is a pot with a long shaft and knob. I have not examined
beyond this simple observation...

Rig seems to tune up fine and puts out power.

73,

Chris
VE2CZ

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Date: Tue, 16 Mar 2004 10:41:20 EST
From: RLucch2098@aol.com

Subject: {Collins} FS: Original Manual for Collins R-392 Receiver w/pic


Hi All;
I do not need this any longer, it is in very good condition, no pages 
"hangin" out, I don't suspect there being too many around any more. I've only ever 
seen one of the receivers!
A nice big book, 275 pages + many pictures, diagrams & schematics .
Price is $50.00ppd!
http://www.myradioroom.com/collinsr-392book-1.jpg
http://www.myradioroom.com/collinsr-392book-2.jpg
http://www.myradioroom.com/collinsr-392book-3.jpg
Tnx & 73...
Rich WA2RQY

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Date: Tue, 16 Mar 2004 09:42:14 -0600
From: Tim Gorman 

Subject: {Collins} Re: 30L1 heat.


Jose,

The Collins 30L1 runs quite warm even when in idling mode. Just the heat=20
generated by the 811A filaments adds up to quite a heat load. There is a fa=
n=20
in the 30L1 but, in my opinion at least, it is barely adequate. That may ha=
ve=20
been a concious decision by the designers in order to minimize costs and ke=
ep=20
moisture out of the unit in less than desirable environments.=20

Many 30L1 users add external fans to help the situation. The use of compute=
r=20
muffin fans is quite common. There have been numerous debates on whether th=
e=20
fans should be situated to blow heat into the unit or pull air out of the=20
unit.  The proponents of both methods have good reasons for each so you wil=
l=20
have to decide whether you want to use external fans, where to put them, an=
d=20
how to use them.=20

I personally use two 12 volt, series-wired, 4 inch muffin fans on top of th=
e=20
cabinet pulling air up out of the unit.  My reasons for this arrangement are
	1. the two fans wired in series turn slower when wired to my 12v supply. T=
his=20
generates less noise but moves plenty of air.
	2. hot air rises so I figured I would work with nature  and give the=
=20
hot air an assist.
	3. It seemed to me that there is less dust under the cabinet to be pulled =
up=20
than dust in the air above to be blown down. Hopefully this keeps the cabin=
et=20
cleaner but I would recommend an annual cleaning at least.

If you use muffin fans on top of the cabinet I would suggest getting some w=
ith=20
protective grills. All Electronics carries these I believe.

If you are getting signal drops when the 30L1 is turned on then it sounds a=
s=20
if something is happening with the transmit/receive relay in the amp. Could=
=20
your keying lead be wired wrong? Is your rig capable of handling the voltag=
e=20
from the 30L1? It is about 170v if I remember correctly. Most newer=20
transceivers won't handle this. I use a reed relay keyed by my transceiver =
to=20
actually key the amp. If the contacts on the reed relay burn up it is easy =
to=20
replace it. I mounted it in a little black plastic case from Radio Shack an=
d=20
just sit it behind the rig. If you want you can put a little SPST switch in=
=20
the box to use as a standby/operate switch for the amp.

Let us know what you find and what you decide about the cooling.

tim ab0wr

On Monday 15 March 2004 21:34, Jose wrote:
> Hello to all.
>
> I just help a friend install a 30L1 with his Yaesu FT1000.
>
> He is getting much better signal reports transmitting  with the
> amplifier on than without out it=85. However,
>
> He has two concerns.
>
> The amplifiers cabinet gets very hot (temperature wise) to the touch
> after being in use for a while. Is this normal?
>
> On receive, it appears that once he turns the amplifier on the receiving
> signals attenuate (he said  in a particular case on 20 mts. from an S9
> +10 to an S 8)
> Any thoughts?
>
> Will appreciate any comments.
>
> Thank you
>
> Jose/WB1FQW CCA # 11588
> Sponsored by the Collins Collectors Association http://www.collinsradio.o=
rg
> Nets: Tues: 3.805 Mc-2000 Central / Thur: 3.875 Mc-2000 Central
> Fri: 3.895 Mc-2000 Pacific / Sun: 14.263 Mc-2000 UTC
> 1st Wed (of the month) AM Net 3.880 Mc-2000 local (ET, CT, MT, PT)
> Sun AM Net: 29.050 Mc-1200 Central

Sponsored by the Collins Collectors Association http://www.collinsradio.org
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Date: Tue, 16 Mar 2004 09:28:15 -0700
From: Dave Hollander 

Subject: {Collins} Help Identifying These Meters


I have three meters marked Collins Radio. One is an s-meter and I assume
the other two are from a transmitter.  What do they go to??

http://members.cox.net/radiostuff9/collins_meter.jpg
http://members.cox.net/radiostuff9/collins_meter2.jpg
http://members.cox.net/radiostuff9/collins_meter3.jpg

Tnx and 73,

Dave N7RK

--
***********************************************************
Dave  N7RK          Boatanchors Home Page: http://members.cox.net/n7rk
Phoenix, Arizona         *DXCC Honor Roll*    *WAZ#22 - 75 Meter SSB*

ex-XE2/N7RK, N7RK/ZB2, VK2ERK, ZM0AJN, WB6NRK, WN6IWX

Boatanchor and Antique Radio Collector


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Date: Tue, 16 Mar 2004 08:46:36 -0800 (PST)
From: Glen Zook 

Subject: {Collins} Re: Help Identifying These Meters


The "S" meter looks like the one in my 75A4 (s/n
2535).  Don't have any idea as to the other 2.

Glen, K9STH


--- Dave Hollander  wrote:

What do they go to??

=====
Glen, K9STH

Web sites

http://home.comcast.net/~k9sth
http://home.comcast.net/~zcomco

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Date: Tue, 16 Mar 2004 09:14:11 -0800 (PST)
From: Jerry Webster 

Subject: {Collins} 30L1 Heat


Hello Every one i use the Roton 6in fans a top
      of the 30L1, on a circle of foan blowing
      down per wn4i also i recall Jerry w7bun
      has fans on his sline including power
      supply. Happy spring every one,Jerry k7enp

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Date: Tue, 16 Mar 2004 12:27:45 EST
From: RLucch2098@aol.com

Subject: {Collins} FS: Original Manual for Collins R-392 Receiver w/pic>OOPS Meant 391


URL's changed to reflect correct model number, sorry all!
Rich

> 
> Hi All;
> I do not need this any longer, it is in very good condition, no pages 
> "hangin" out, I don't suspect there being too many around any more. I've only ever 
> seen one of the receivers!
> A nice big book, 275 pages + many pictures, diagrams & schematics .
> Price is $50.00ppd!
> http://www.myradioroom.com/collinsr-391book-1.jpg
> http://www.myradioroom.com/collinsr-391book-2.jpg
> http://www.myradioroom.com/collinsr-391book-3.jpg
> Tnx & 73...
> Rich WA2RQY



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Date: Tue, 16 Mar 2004 19:36:41 +0000
From: torreym@mchsi.com

Subject: {Collins} Re: 30L1 heat.


One can debate whether or not the heat build-up in the 30L-1 is detrimental.  
Many units go for decades without a tube change.

I personally like the security of disappating the heat.  An excellent answer to 
this problem is the so-called Boat Anchor Cooler produced by Carl, K4ZRD.  He 
produces an attractive DC power supply that comes with two muffin fans with 
rubber feet to place on top of your cabinet.  Several more muffin fans can be 
run off the same supply.  They are very quietand virtually military grade 
construction.  They can be ordered through his web site at K4ZRD.COM.  Several 
pictures of the unit are on the site.

73's
Torrey N9AUJ
> Hello to all.
>  
> I just help a friend install a 30L1 with his Yaesu FT1000.
>  
> He is getting much better signal reports transmitting  with the
> amplifier on than without out it…. However,
>  
> He has two concerns.
>  
> The amplifiers cabinet gets very hot (temperature wise) to the touch
> after being in use for a while. Is this normal?
>  
> On receive, it appears that once he turns the amplifier on the receiving
> signals attenuate (he said  in a particular case on 20 mts. from an S9
> +10 to an S 8)
> Any thoughts?
>  
> Will appreciate any comments.
>  
> Thank you
>  
> Jose/WB1FQW CCA # 11588
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Date: Tue, 16 Mar 2004 14:41:21 -0500
From: Roy Morgan 

Subject: {Collins} Re: Resolved: 75A-4 Spinner Knob


At 08:49 AM 3/13/2004 -0500, W3QQQ@aol.com wrote:
>Yet another happy ending to a CCA reflector story.  My spinner knob has 
>been happily reunited with its shaft.
>  ...Collins used a relatively small Bristol spline set screw on the A-4's 
> largest knob (much smaller than the set screws used on smaller 
> knobs).  The correct size is #99-62 (XceLite part #).

For the record, here is some more information I believe to be correct:

The set screws used in the 75A-4 main tuning knob are: 1/8 inch 3-48's.
(from: "Date: Fri, 29 Mar 2002 20:14:01 -0800
From: Robert Lawson 
To: "Collins@Listserve.com" 
Subject: {Collins} 75A-4 4:1 Spinner Knob Set Screws..."

The diameter of the spline socket normally found in #3 set screws is 0.048 
inch.
The diameter of the spline socket normally found in #4 set screws is 0.060 
inch.
Spline keys in both these sizes are made in both four- and six- flute 
varieties.  (I do not know which is found in the 75A-4.)
(From: )

Xcelite part #99-61 appears to be six sided with diameter 0.048 inch.
Xcelite part #99-62 appears to be six sided with diameter 0.060 inch.
(From: )

Xcelite Bristol spline screwdriver set part #99PS60 appears to have spline 
wrenches from diameter 0.048 to 0.183 inch, but I do not know whether the 
smaller sizes are four or six sided or one of each.
(From: 
)

So I am left with the following questions:

Is the 75A-4 Reduction tuning knob equipped with #3 or #4 set screws?

are the set screws four-or six-sided?

What screws are to be found in recently manufactured reproductions of the knob?

Roy



- Roy Morgan, K1LKY since 1959 - Keep 'em Glowing!
7130 Panorama Drive, Derwood MD 20855
Home: 301-330-8828 Work: Voice: 301-975-3254,  Fax: 301-948-6213
roy.morgan@nist.gov --

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Date: Tue, 16 Mar 2004 14:39:39 -0600
From: "Ron Samchuk" 

Subject: {Collins} Need 32V1 manual


Hi everyone... this is my first Collins reflector message.  I just became an owner of a nice 75A2 and 32V1 (my first ever Collins equipment!).  However, I need a manual for the 32V1.  I tried to download it from the Collins site, but after waiting over 30 minutes for the download to complete, there was nothing there!   I tried this three different times, and tried asking for the complete manual and sections.  Any suggestions or other sources of 32V1 manual downloads?  Thanks from Ron VE4SR
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Date: Tue, 16 Mar 2004 15:56:29 -0500
From: "VE3AX" 

Subject: {Collins} Buffalo area hams going to Timonium?


Hi:

 Wondering if any of the Collins group from the Buffalo area is heading to
Timonium with a van?

I am unable to go but am in need of having something picked up - it is
Collins related!

If you can help, or know of someone that might, would you contact me off
list please?

Thanks

Peter Shilton
VE3AX

VE3AX@sympatico.ca

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Date: Tue, 16 Mar 2004 17:24:34 -0600
From: "Larry Saletzki" 

Subject: {Collins} Re: Need 32V1 manual


Hi Ron,
 The preferred way to download a manual or a section of a manual from the
CCA website is to right click on the file. A drop down menu will come up
with a "Save Target As" choice. Click on that then another screen will come
up asking where you want to save the file to. What this is doing is saving
the file to your hard drive where you can open it later with Acrobat and
read it or print it. To open these files online you need a really fast
connection and a bunch of memory in your p/c. Please give this a try and let
me know how it worked. If you still have problems I will see what else we
can do.
Thanks!
Larry WA9VRH
Collins Collectors Association Archive Manager


----- Original Message -----
From: "Ron Samchuk" 
To: 
Sent: Tuesday, March 16, 2004 2:39 PM
Subject: {Collins} Need 32V1 manual


> Hi everyone... this is my first Collins reflector message.  I just became
an owner of a nice 75A2 and 32V1 (my first ever Collins equipment!).
However, I need a manual for the 32V1.  I tried to download it from the
Collins site, but after waiting over 30 minutes for the download to
complete, there was nothing there!   I tried this three different times, and
tried asking for the complete manual and sections.  Any suggestions or other
sources of 32V1 manual downloads?  Thanks from Ron VE4SR
> Sponsored by the Collins Collectors Association
http://www.collinsradio.org
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>
>
>


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Date: Tue, 16 Mar 2004 17:03:33 EST
From: K5lxz@wmconnect.com

Subject: {Collins} 32S1 Transmitter for sale


For Sale:  Collins 32S1 Transmitter.  CCA "excellent".  Original manual and 
documentation for collins mods.  serial # 2294.  Asking $350 and I pay shipping 
via UPS ground.   Please email me at k5lxz@wmconnect.com or call 985-791-7873.
thanks to the reflector for posting this.
Ray Husher  W5EW


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Date: Tue, 16 Mar 2004 17:53:13 EST
From: AB3L1@aol.com

Subject: {Collins} Meters


Dave and group,
I might be able to help ....Finally.

Meter #3 is on my mid serial number 75A-4. I believe mine is around 23xx. I 
didn't pull it foreword on the desk to see for sure.


Have fun,

Bob AB3L


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Date: Tue, 16 Mar 2004 18:13:18 -0500
From: "sharon baumgardner" 

Subject: {Collins} 75a-3


hello radioers;
i must admit that i know next to nothing about radio but i used to listen sometimes when my neighbor would be talking to his ham buddies.so to get to the point when he died about 6 months ago at age 87 his collins 75a-3 came to me. we listened to it about 5 years ago when he was still able to maintain his antenna network which has since been attacked by bushes, trees and fallen limbs. anyway i was going to try to hook it up but the more i read about antennas the more confused and bewildered i became. so i think that someone who can operate and appreciate this instrument should have it. i checked out the net and find that $450.00 should be a fair price. as far as i can tell it is a 1953 model with original instruction book. it has a coax connection and a 148-c adapter. about 4 1/2 years ago my neighbor whose name was johnie collins ask me to disconnect the antenna and set the radio up on a shelf where it lived until three weeks ago. i don't know anymore about it but if you hav
 e questions i will try to answer them. thank you.
steve baumgardner       lake city , florida
baum2@alltel.net         386-752-9852
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Date: Tue, 16 Mar 2004 17:00:57 -0500
From: "B Riches" 

Subject: {Collins} 32v2 dial light


Just restored a fantastic 32v2.  Upper slide rule dial lights up fine - lower dial does not light up and there are only two bulbs that I can find in that area - the power on bulb and the xmit bulb.  Is something missing???   Inquiring minds want to know.....
73,

Bill Riches, WA2DVU
Cape May, NJ
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Date: Tue, 16 Mar 2004 13:32:18 -0800
From: Jerry Seligman 

Subject: {Collins} 30L1 Heat


Jerry Webster wrote:

>Hello Every one i use the Roton 6in fans a top
>      of the 30L1, on a circle of foan blowing
>      down per wn4i also i recall Jerry w7bun
>      has fans on his sline including power
>      supply. Happy spring every one,Jerry k7enp
>
Heat rises - it makes more sense to draw hot air out. Otherwise you are 
blowing hot air
from the tubes down over all the components under the chassis. By 
drawing hot
air out the top, everything stays cool!
73, Jerry W7BUN


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Date: Tue, 16 Mar 2004 20:03:28 -0500
From: "Jose" 

Subject: {Collins} 30L1 heat


Thank you to everyone that answer my inquiry.
 
I will advise my friend on the various options of cooling the amp as
well as help him by clean the T/R relay. He is 88 years young and going
strong.
 
Thanks again
 
Jose/WB1FQW

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Date: Tue, 16 Mar 2004 20:39:10 -0500
From: "Conrad Nasatka" 

Subject: {Collins} ( Collins ) Wanted - WE 302C-3 & DL-1


Content-Type: text/plain;
	charset="Windows-1252"
Content-Transfer-Encoding: quoted-printable
Hello to all on the list:
I know that I have asked for these two items before and had absolutely =
no success but am willing to try again.  I am looking for two pieces, in =
very good working condition to top off my collection and they are:
1) A Winged Emblem Watt Meter, 302C-3.  I know they are still out there =
because I just saw one on the recently produced, Collins Screen Saver =
by, Carl-K4ZRD.
2) A Winged Emblem Dummy Load, DL-1. Again, I just saw one on the =
recently produced, Collins Screen Saver, by Carl-K4ZRD.
You have just got to love this Collins equipment!
Having just said that, I hope I don't turn somebody off or have someone =
send me a photo of either piece of gear.  What I am hoping is that =
someone will be willing to part with a beautiful, working, in very good =
condition 302C-3 or DL-1, for the right price. Thanks to everyone who =
has helped me in the past with maintaining my Collins Collection.
Regards
73
Conrad
WB3DQD
CCA # 11465
 =20




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Date: Tue, 16 Mar 2004 17:58:14 -0800
From: "Ben Davis" 

Subject: {Collins} 516F-2 xfrm


Hello everyone.

any one know of an out let for the transform and the two choks for the =
516F-2
or the transform and choke for the PM-2

Ben  W6TCD
bfdavis@davisvill.org
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Date: Wed, 17 Mar 2004 07:18:06 -0600
From: "Sergio Santos Tejeda" 

Subject: {Collins} KWM-2A ALC Problem


Hello Every one.
My transceiver is now giving me a little problem with the ALC control, when I short the PTT or key the rig, the alc meter goes high for around 1 to 2 seconds and then return to 0 causing a delay in power up. I have measure the alc rest voltage and is -1.05V,  with the key or ptt reach -3.5 to -5 ( with the delay) and then change again to around -1 with no modulation. After the delay time the alc function works fine and the power is reflected with modulation. I check the R-119 timing resistor and the value looks OK.  Any help will be appreciated.
73 de tg9atx SST
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Date: Wed, 17 Mar 2004 08:07:54 -0600
From: "k5jv" 

Subject: {Collins} trade knobs


Greetings to all,
        I have a few assorted, original Collins knobs that I would like to trade for a complete original Hallicrafters S-38B knob set.  Please do not respond unless you have the S-38B knob set.
 
73 de Lon Cottingham, K5JV

1110 Golden Bear Ln,
Kingwood, TX 77339

281-358-4207
281-358-4234 FAX
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Date: Wed, 17 Mar 2004 11:00:42 -0300
From: "Ivan Silva" 

Subject: {Collins} HF8050


For sale  HF8050  very good
Extra power supply
two spare boards
no manual
asking $ 1400 + shipping

Ivan/PY1YB

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Date: Wed, 17 Mar 2004 15:58:14 EST
From: Kenkai@aol.com

Subject: {Collins} 75S3 Knob


Does anyone have experience replacing aluminum knob inlay for 75S3  main 
tuning knob ?  How does it look afterwards and is the old metal inlay difficult to 
remove ? What kind of adhesive should be used?
Ken/WB2SCT


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Date: Wed, 17 Mar 2004 13:01:25 -0800 (PST)
From: Rick Dorsch 

Subject: {Collins} For Sale: New Collins 455Kc Mechanical Filter


I have the following brand new Collins Mechanical
Filter for sale:

Type: F 455 K 80
Ser: 5V2
p/n:  526-9328-00

This item has never been used.  Perfect for the A-line
or the R390.

$195   postage paid-USA (Priority Mail)

Dr. Rick Dorsch - NE8Z
P.O. Box 616
Hamburg, MI 48139           ne8z@yahoo.com

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Date: Wed, 17 Mar 2004 10:18:09 -0700
From: "J. A. Call" 

Subject: {Collins} Collins Portable Antenna Control Assembly




Hello to the list:  I have a COLLINS portable control assembly model
613G-3  for sale. Collins part #7585040-001.  It is designed to be used 
with a Collins model 237Q-2 or 237Q-2A portable antenna.  Frequency range
2-30Mhz. Comes with cables.  Sorry,  NO manual or other information
available.  Approximate size of the unit  20 inches long, 8 inches high,
8 inches wide.  Weight 15 pounds. $50.00 plus shipping from ZIP 84106.
E-mail if of any interest.


J
W7KSG
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Date: Wed, 17 Mar 2004 10:45:56 EST
From: K5lxz@wmconnect.com

Subject: {Collins} For Sale item Sold


Hello All,  The 32S1 is sold.  Thanks to all who responded and to the 
reflector.
Ray Husher W5EW


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Date: Wed, 17 Mar 2004 08:24:26 -0600
From: "Freeberg, Scott (STP)" 

Subject: {Collins} Re: Need 32V1 manual


Hi Ron, Welcome aboard and congratulations on your new 32V1 and 75A2 =
Collins setup!  What a nice rig and it will be alot of fun to make =
classic contacts with it.  I have a 32V2 and a 75A1 station and its a =
real pleasure to use.  I run a little 75 meter AM with it, a bunch of =
80, 40, and 20 cw with it, some 10 meter AM with it.  I've said it here =
before but my 75A1 and 75A2 are the sweetest sounding receiver's I've =
ever heard (with a good speaker of course).  Good luck with your new =
station.

The Collins Collector Association has an AM net on the first Wednesday =
of each month at 8 pm in each time zone on 3880 Khz.  They also have a =
10 meter AM net on Sundays. So lots of opportunities to get into a CCA =
AM net with that new rig.

73, Scott WA9WFA
http://www.qsl.net/wa9wfa
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Date: Wed, 17 Mar 2004 09:55:43 -0500
From: "Craig Roberts" 

Subject: {Collins} Re: 516F-2 xfrm


Hi Ben,

Peter Dahl (www.pwdahl.com) can supply a new transformer and both chokes,
but they are very expensive. Or, if you have the old ones, he can rewind
them (not quite as expensive). His new transformers and chokes are allegedly
more rugged than the originals and, if so, should last a lifetime.

73,

Craig
W3CRR

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Date: Wed, 17 Mar 2004 15:32:14 -0600
From: "Ron Samchuk" 

Subject: {Collins} Re: 32V1 microphone suggestions


What is the best type of microphone to use on my 32V1 transmitter?  Thanks from Ron VE4SR
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Date: Wed, 17 Mar 2004 16:23:02 -0600
From: "Freeberg, Scott (STP)" 

Subject: {Collins} Re: 32V1 microphone suggestions


I don't think there is such a thing as 'best' :)))

I have been using an unamplified D-104 with very good success with my =
32V2.=20

73, Scott WA9WFA
CCA962

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Date: Wed, 17 Mar 2004 17:00:46 -0500
From: "Craig Roberts" 

Subject: {Collins} Re: 75S3 Knob


Hi Ken,

The original inlay is very thin so you employ use a thin bladed knife, small
screwdriver or other such device to pry it up. I use an X-acto hobby knife.
Don't pry at the edge, though, or you may scar the knob. Use your tool to
gently puncture the inlay near the center and peel it up. You'll find this
surprisingly easy to do, since the adhesive underneath will be little more
than powder at this point.

After cleaning off the old adhesive residue by gently scraping it away, glue
the new inlay in place with contact cement. I use a very thin layer of
Walthers Goo. It's a high grade rubber-based product favored by model
railroaders. It's readily available at hobby shops. It bonds unlike
materials extremely tightly and well and does not crystallize with age.
Since it remains flexible,  your new inlay can be replaced with relative
ease in the future. Apply it sparingly; it is not necessary to coat the
entire inside surface of the inlay. Just a "dot" or two will suffice.

New knob inlays certainly do dress up a rig. They look great! Applying them
is just about the easiest and most economical refurbishing step you can
take.

73,
Craig
W3CRR


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Date: Wed, 17 Mar 2004 17:51:26 -0600
From: "James Monk" 

Subject: {Collins} Re: 75S3 Knob


Ken..... the method I have used successfully several times is to drill a
small hole in the center of the aluminum disk, then use a sharp object like
a dental pic to pry up the aluminum disk so you can grab it with a long nose
pliers and pull it up and out.     it may separate and come out in more than
one piece, but that's no problem,

DO NOT attempt to pry it out at the edges....... you will likely damage the
knob and that is not good.

Clean up the cavity to make it smooth and use a rubber base cement.....
don't use Crazy Glue or Super Glue..... as it may let the disk pop out
sometime later.

This method has worked well for me several years.


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Date: Wed, 17 Mar 2004 19:06:09 -0500
From: "Ron Baker" 

Subject: {Collins} Part Search


While restoring a KWM-2, removed to clean the clear plastic window with red
line used to calibrate the dial, I accidentally broke it.    Now I've done
this several times with out a problem but it appears "Murphy" was on my
shoulder this time.     Thus if anyone has the clear plastic window that
they would be willing to sell it please let me know.

My direct e-mail address is :  wb4hfn@wb4hfn.com

73,  Ron / WB4HFN



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Date: Wed, 17 Mar 2004 15:55:18 -0700
From: "John N. Schwartzberg" 

Subject: {Collins} Re: 32V1 microphone suggestions


Hi Ron -

I use a standard (non-amplified) D104 with my 32V2 with great results.  I 
played with a small handful of other mics, but the D104 sounds best.  Also, 
other 32V transmitters I hear on the air using D104's sound great to 
me.  Its a hard to beat combination!

John
N0GII
Denver, CO

At 03:32 PM 3/17/2004 -0600, Ron Samchuk wrote:
>What is the best type of microphone to use on my 32V1 transmitter?  Thanks 
>from Ron VE4SR
>Sponsored by the Collins Collectors Association http://www.collinsradio.org
>Nets: Tues: 3.805 Mc-2000 Central / Thur: 3.875 Mc-2000 Central
>Fri: 3.895 Mc-2000 Pacific / Sun: 14.263 Mc-2000 UTC
>1st Wed (of the month) AM Net 3.880 Mc-2000 local (ET, CT, MT, PT)
>Sun AM Net: 29.050 Mc-1200 Central


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Date: Wed, 17 Mar 2004 18:21:57 -0800
From: Bob 

Subject: {Collins} Needed: K1 Relay for 32S-1


Greetings All
	Need Relay K1 for the 32S-1. (coil has opened somewhere inside)
It's a 14k ohm, 115vdc coil....
Markings are: C.P.Clare... type 972-1353-00 ...#A-95183
Surely do appreciate the help.
In addition, is there anyone you might know of that does relay/coil rebuild?
Many Thanks and
Best 73s
Bob KX6K
kx6x@comcast.net
	

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Date: Thu, 18 Mar 2004 07:55:08 -0400
From: "Kathleen Curtis" 

Subject: {Collins} Re: 75S3 Knob


Why remove the old inlay?
Ira
CE3AM
----- Original Message -----
From: 
To: 
Sent: Wednesday, March 17, 2004 4:58 PM
Subject: {Collins} 75S3 Knob


> Does anyone have experience replacing aluminum knob inlay for 75S3  main
> tuning knob ?  How does it look afterwards and is the old metal inlay
difficult to
> remove ? What kind of adhesive should be used?
> Ken/WB2SCT
>
>
> Sponsored by the Collins Collectors Association
http://www.collinsradio.org
> Nets: Tues: 3.805 Mc-2000 Central / Thur: 3.875 Mc-2000 Central
> Fri: 3.895 Mc-2000 Pacific / Sun: 14.263 Mc-2000 UTC
> 1st Wed (of the month) AM Net 3.880 Mc-2000 local (ET, CT, MT, PT)
> Sun AM Net: 29.050 Mc-1200 Central
>

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Date: Thu, 18 Mar 2004 03:48:59 -0800
From: "Glen Galati" 

Subject: {Collins} Re: Needed: K1 Relay for 32S-1


Hello Bob and fellow Collins enthusiasts,
I did some research on the FEDLOG, and the Collins PN: 972-1353-00 has a CP
CLARE PN: A257144 with a NSN 5945-00-773-3394. No telling when the
government last procured this part but it did show acquisition at $29.28.
Army, Air Force and Navy all used this part somewhere, most likely in a
piece of Collins equipment. The Clare PN: A-95183 did not cross. Since I
don't have this piece of equipment nor the manual, perhaps a picture would
enlighten the group. I take it that this may be an open frame type of relay,
since the early model KWM-2A's had those.
I've got thousands of new and used relays, but not enough time to inspect
each one. So, a picture is really necessary. I did find this stock number
listed out on PARTS BASE with two companies showing 1 each on their listing.
The A-257144 also showed up on Google at a company that sells parts. Pretty
steep price $138.95 with one in stock. It may be possible to repair your
relay depending on its construction. Hopefully one of us can help toward a
solution.

73,
Glen Galati, KA7BOJ
'Tacoma, WA
----- Original Message -----
From: "Bob" 
To: 
Sent: Wednesday, March 17, 2004 6:21 PM
Subject: {Collins} Needed: K1 Relay for 32S-1


Greetings All
Need Relay K1 for the 32S-1. (coil has opened somewhere inside)
It's a 14k ohm, 115vdc coil....
Markings are: C.P.Clare... type 972-1353-00 ...#A-95183
Surely do appreciate the help.
In addition, is there anyone you might know of that does relay/coil rebuild?
Many Thanks and
Best 73s
Bob KX6K
kx6x@comcast.net


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Date: Wed, 17 Mar 2004 19:47:05 -0800
From: "Ben Davis" 

Subject: {Collins} ID parts


Good evening everyone

I have a large transformer that I am not sure of what it belongs to PN#  =
662-0279-00
also a choke PN# 668-0355-00.

can some one help me out or are they just a large boat ancor.

Ben W6TCD
bfdavis@davisvill.org
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Date: Wed, 17 Mar 2004 19:32:07 -0800 (PST)
From: Glen Zook 

Subject: {Collins} Re: Needed: K1 Relay for 32S-1


If all else fails, take a large electrolytic capacitor
(the higher the capacity the better) and attach a
couple of insulated leads to it.  Then charge it up. 
Next, connect the leads to the terminals of the relay
coil (make sure that you don't touch the conductor
portion of the leads).  Many times this will cause an
"arc" inside the coil where the winding has broken and
will actually "weld" the wire back together.  If so,
then your coil should work fine.  If not, then you
haven't lost anything!

Glen, K9STH


--- Bob  wrote:

In addition, is there anyone you might know of that
does relay/coil rebuild?

=====
Glen, K9STH

Web sites

http://home.comcast.net/~k9sth
http://home.comcast.net/~zcomco

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Date: Thu, 18 Mar 2004 08:59:51 -0500
From: 

Subject: {Collins} Available - Collin 100 Kc 8 pin crystal  P/N 291 0004 009


Greetings all:
Available: 1 each CRYSTAL UNIT, QUARTZ  Collins P/N 291 0004 009

This is a standard eight pin plug in 100 KC crystal unit, dated July 1956.  It is new, still in original box (box has been opened).

$28.00 shipped CONUS. 

Cheers,

Al Link, K4ICL
ALink@K4ICL.com
139 Turner Circle
Greenville, SC 29609
864 420-4652
 
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Date: Thu, 18 Mar 2004 08:54:18 -0500
From: Bob Sullivan 

Subject: {Collins} Re: 75S3 Knob


Ira,

Because if you don't the additional thickness of the new overlay will=20
eliminate the "reveal" between the knob and insert and one can feel the=20
edge of the added overlay. Better to remove the old which is really very=20
easy and takes about 10-seconds.

73, Bob
W=D8YVA


At 06:55 AM 3/18/2004, Kathleen Curtis wrote:
>Why remove the old inlay?
>Ira
>CE3AM
>----- Original Message -----
>From: 
>To: 
>Sent: Wednesday, March 17, 2004 4:58 PM
>Subject: {Collins} 75S3 Knob
>
>
> > Does anyone have experience replacing aluminum knob inlay for 75S3  main
> > tuning knob ?  How does it look afterwards and is the old metal inlay
>difficult to
> > remove ? What kind of adhesive should be used?
> > Ken/WB2SCT

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Date: Thu, 18 Mar 2004 09:19:29 -0600
From: "Ray Gustafson WB0HHM" 

Subject: {Collins} 30L-1 Knobs


Hi 
Has anyone tried to repair the Knobs (plate and loading) 30L-1
that have been chipped or outer coating has come off
around the edges, could you fill in and paint them?
                                            Ray WB0HHM 
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Date: Thu, 18 Mar 2004 17:09:53 +0200 (SAST)
From: Ludwig Combrinck 

Subject: {Collins} Manual wanted for Collins VHF equipment



Hi All

I am restoring an AN/ARC-73, or T-879 (17L-7A) and R-1123A (51X-2B) vhf
transmitter/receiver combination. Many of you will know what I am talking
about.....I need some documentation though. If anyone can help I will
appreciate it.

Regards

Ludwig
ZS6WLC

+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
Ludwig Combrinck Ph.D
Programme Leader
HartRAO Space Geodesy Programme
PO BOX 443
Krugersdorp 1740
South Africa
e-mail: ludwig@hartrao.ac.za
Tel: +27 12 326-0742
Fax: +27 12 326-0756
IGS Regional Data Center for Africa
URL: http:\\www.hartrao.ac.za\geodesy\geodesy_index.html
+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++

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Date: Thu, 18 Mar 2004 08:38:41 -0600
From: 

Subject: {Collins} Re: Needed: K1 Relay for 32S-1






Bob and Glen,

Prior to moving from the Chicago area to Corn Country a few years ago, I
would patrol the few remaining "junque and surplus" outlets left around
there to see what they had.  Over the years, I acquired a number of relays
- many different styles and coil ratings - that were distributed by a
company named Relay Service Company.  They are (were) located either in
Chicago or the surrounding area.  Their products were always inexpensive
(why else would I buy them?) and worked fine.  Although I never knew for
sure, my guess was, and still is, that Relay Service took in used or
surplus relays and "remanufactured" them.    Anyway, in most cases, the
contact stacks looked absolutely brand new on the ones I bought.  I recall
that at one time, I saw an ad for Relay Service in one of the electronic
trade rags and received a catalog from them via the bingo card route.

So, for whatever it may be worth, you might want to check on-line or via
the Internet Yellow Pages to see if Relay Service is still around and if
they might have an exact replacement.

73, Dale
WA9ENA




                                                                                                                                               
                      "Glen Galati"                                                                                                            
                                 To:       ,                                    
                      Sent by:                         cc:                                                                                     
                      collins-bounce@mailman.li        Subject:  {Collins} Re: Needed: K1 Relay for 32S-1                                      
                      stserve.com                                                                                                              
                                                                                                                                               
                                                                                                                                               
                      03/18/2004 05:48 AM                                                                                                      
                      Please respond to romad67                                                                                                
                                                                                                                                               
                                                                                                                                               





Hello Bob and fellow Collins enthusiasts,
I did some research on the FEDLOG, and the Collins PN: 972-1353-00 has a CP
CLARE PN: A257144 with a NSN 5945-00-773-3394. No telling when the
government last procured this part but it did show acquisition at $29.28.
Army, Air Force and Navy all used this part somewhere, most likely in a
piece of Collins equipment. The Clare PN: A-95183 did not cross. Since I
don't have this piece of equipment nor the manual, perhaps a picture would
enlighten the group. I take it that this may be an open frame type of
relay,
since the early model KWM-2A's had those.
I've got thousands of new and used relays, but not enough time to inspect
each one. So, a picture is really necessary. I did find this stock number
listed out on PARTS BASE with two companies showing 1 each on their
listing.
The A-257144 also showed up on Google at a company that sells parts. Pretty
steep price $138.95 with one in stock. It may be possible to repair your
relay depending on its construction. Hopefully one of us can help toward a
solution.

73,
Glen Galati, KA7BOJ
'Tacoma, WA
----- Original Message -----
From: "Bob" 
To: 
Sent: Wednesday, March 17, 2004 6:21 PM
Subject: {Collins} Needed: K1 Relay for 32S-1


Greetings All
Need Relay K1 for the 32S-1. (coil has opened somewhere inside)
It's a 14k ohm, 115vdc coil....
Markings are: C.P.Clare... type 972-1353-00 ...#A-95183
Surely do appreciate the help.
In addition, is there anyone you might know of that does relay/coil
rebuild?
Many Thanks and
Best 73s
Bob KX6K
kx6x@comcast.net


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Date: Thu, 18 Mar 2004 09:48:55 -0500
From: Roy Morgan 

Subject: {Collins} Re: 516F-2 xfrm


At 05:58 PM 3/16/2004 -0800, Ben Davis wrote:
>Hello everyone.
>
>any one know of an out let for the transform and the two choks for the =
>516F-2
>or the transform and choke for the PM-2


This fellow has NOS original replacement heavy duty transformers (with the 
rectifier filament windings) for  a nickel less than $130:

http://www.surplustuff.com/
 lists the transformer:

PRI 115VAC /SEC 1-1000-425-123-0-425-1000 VAC @250MA/SEC 2- 6.3 @11A,/SEC 3 
-5 VAC@3A/SEC 4- 5VAC@3A

NEW UNUSED BOXED.

COLLINS 516F-2HD

4.35 X 5.25 X 5.2"

25 pounds shipping weight

$129.95


- Roy Morgan, K1LKY since 1959 - Keep 'em Glowing!
7130 Panorama Drive, Derwood MD 20855
Home: 301-330-8828 Work: Voice: 301-975-3254,  Fax: 301-948-6213
roy.morgan@nist.gov --

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Date: Thu, 18 Mar 2004 09:41:29 -0500
From: Chris Willson 

Subject: {Collins} Antenna Tuner advice


Me again.

Getting my vintage S-line ready to go, and trying to decide what type of antenna is going
up... most likely some kind of wire multi-bander, like the G5RV or equiv.  Any advice on the
type/brand of tuner to use?  My only criteria is that it be "vintage"... not terribly
interested in something fancy or automatic.

TIA and 73 to all,

Chris
VE2CZ /3

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Date: Thu, 18 Mar 2004 12:42:11 -0800 (PST)
From: Tony 

Subject: {Collins} KWS-1 Filament transformers


Hello to all,

Looking for both the pa filament transformer and the
high voltage rectifier transformer for the KWS-1 power
supply.

Tnx & 73,

Tony WV3Z

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Date: Thu, 18 Mar 2004 11:35:08 -0600
From: "Ray Gustafson WB0HHM" 

Subject: {Collins} 30L-1 Knobs


Thanks Bob for the information on the repainting
the knobs, will give that a try.
                                  73 Ray 
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Date: Thu, 18 Mar 2004 11:54:34 -0500
From: Roy Morgan 

Subject: {Collins} LOGSA manual source


At 05:09 PM 3/18/2004 +0200, you wrote:
(subject was Manual wanted for Collins VHF equipment"

>Hi All
>
>I am restoring an AN/ARC-73, or T-879 (17L-7A) and R-1123A (51X-2B) vhf
>transmitter/receiver combination. Many of you will know what I am talking
>about.....I need some documentation though.

Ludwig,

The "LOGSA" site has manuals for free download.  Unfortunately it does not 
seem to have what you want.

It may have manuals for other things you are looking for in the future, so 
I post this info:


Here is how to thread your way to the place:

Surf to: 
Scroll down to "Electronic Technical Manuals (ETMs) Online"
    and click on "Go to Electronic Technical Manuals Online"
Click the "I Accept" button.  (Ignore any notices about needing a LOGONID.)
On the next screen, click "Enter the Site"
Enter " AN/ARC-73" or whatever in the "Pub Title Text" box and click "Search?"

Then (In Netscape) right-click each pub and save it to your 
disk.  (Internet Explorer or other browser may be slightly different.)

Roy

- Roy Morgan, K1LKY since 1959 - Keep 'em Glowing!
7130 Panorama Drive, Derwood MD 20855
Home: 301-330-8828 Work: Voice: 301-975-3254,  Fax: 301-948-6213
roy.morgan@nist.gov --

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Date: Thu, 18 Mar 2004 18:59:02 EST
From: JONWEINER@aol.com

Subject: {Collins} FS: Excellent RE 516F-2 Power supply


I have for sale an excellent condition Round Emblem Collins 516F-2 power 
supply and enclosure. Updated, with solid state rectifiers. Not a mark on the 
cabinet. Price: $395.
Jon


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Nets: Tues: 3.805 Mc-2000 Central / Thur: 3.875 Mc-2000 Central
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Date: Thu, 18 Mar 2004 19:32:21 -0700
From: "J. A. Call" 

Subject: {Collins} HP410B HF VTVM-For checking Collins gear







Hello to the list:  FOR SALE Hewlett Packard HP410B (bench model or rack
model - your choice) HF VTVM. Very good physical and electrical
condition.  Has a few paint scuff marks on front panel  due to shop
usage, however no dents or dings. Glass in the meter not cracked. Meter
case  not cracked.  All panel markings clear and distinct.  Meter
markings very good.  All original knobs. Non smoking environment.  
Clean outside and in. Checked out on  all  functions. Recently calibrated

with HP6920B meter  calibrator and Fluke 45 digital multimeter.  Comes
with all test cables which are in good condition and  includes the AC
probe, 
which is in very good condition, and which  has a new  2-01C tube
installed. 
Also includes a copy of the operating and service manual , which is comb
bound,
 and an  EIMAC data sheet on the 2-01C diode tube for your reference. 
All
tubes checked.   $165.00 plus shipping  from ZIP 84106. Shipping
estimated $20.00  and  insured for $200.00. Any excess immediately
refunded.

J
W7KSG
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Nets: Tues: 3.805 Mc-2000 Central / Thur: 3.875 Mc-2000 Central
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Sun AM Net: 29.050 Mc-1200 Central


Date: Thu, 18 Mar 2004 19:34:50 -0700
From: "J. A. Call" 

Subject: {Collins} HP410C HF VTVM-For checking Collins gear






Hello to the list:  FOR SALE Hewlett Packard HP410C HF VTVM.  Very good
physical and electrical condition.  Has a few paint scuff marks on front
and side panels due to general usage,  however  no dents or dings. Glass
in the meter not cracked. All panel markings clear and distinct.  Meter
markings very good.  All original knobs. Non smoking environment.  Clean
outside and in. Checked out on  all functions. Recently calibrated with
HP6920B meter calibrator and Fluke 45 digital multimeter. Comes with all
test cables which are in good condition and  is calibrated with a HP410B
AC probe, which is in very good condition, and which has a new diode tube
installed.  Includes  an AC power cord and an extensive operating and 
service manual, which is comb bound. $165.00 plus $20.00 shipping from
 ZIP 84106 and insured for $200.00. 

J 

W7KSG
Sponsored by the Collins Collectors Association http://www.collinsradio.org
Nets: Tues: 3.805 Mc-2000 Central / Thur: 3.875 Mc-2000 Central
Fri: 3.895 Mc-2000 Pacific / Sun: 14.263 Mc-2000 UTC
1st Wed (of the month) AM Net 3.880 Mc-2000 local (ET, CT, MT, PT)
Sun AM Net: 29.050 Mc-1200 Central


Date: Thu, 18 Mar 2004 23:02:31 -0800
From: "Rich Wilkerson" 

Subject: {Collins} A want


Hello to the group.
    I checked into the net on 80 tonight and was asking info on the KWM2A..
I now run a Swan 350 and a  Drake TR-4.  I enjoy these radio very much, even
the drifty Swan.. But now looking into getting a Collins.

    Thanks, Rich... WD6FDD

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Nets: Tues: 3.805 Mc-2000 Central / Thur: 3.875 Mc-2000 Central
Fri: 3.895 Mc-2000 Pacific / Sun: 14.263 Mc-2000 UTC
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Date: Fri, 19 Mar 2004 00:26:43 -0500
From: W7gmy@aol.com

Subject: {Collins} Moving Sale


Hello to the Guys n Gals

I am moving so a lot of my Collins Collection is going to have to go;
 
75A-2 W/product detector,  Near perfect condition...$600
32V-2 W/32V3 cabinet, Also near perfect condition...$650
270G-2 Speaker for A-2 station. nice & clean..9 ....$200
75A-3 W/148C-1 NBFM adapter   "       "   "    " ...$550   
OBO, plus S&H from Seattle

Thanks

Dale
W7GMY
Sponsored by the Collins Collectors Association http://www.collinsradio.org
Nets: Tues: 3.805 Mc-2000 Central / Thur: 3.875 Mc-2000 Central
Fri: 3.895 Mc-2000 Pacific / Sun: 14.263 Mc-2000 UTC
1st Wed (of the month) AM Net 3.880 Mc-2000 local (ET, CT, MT, PT)
Sun AM Net: 29.050 Mc-1200 Central


Date: Fri, 19 Mar 2004 11:18:55 -0500
From: "Joe & Dawn Nyberg" 

Subject: {Collins} 30K-4 Modulation Transformer


Greetings to all on the net:
My 30K-4 required a replacement modulation transformer.  I requested that Peter W. Dahl Company either repair or replace the unit.  To date the transformer has been sent back twice and it still does not function properly.  The purpose of this message is not to complain but to find out if anyone else has had a modulation transformer for a 30K-4 rewound or replaced and if so, what "recipe" was used.  It could very well be that Mr. Dahl does not have the correct data in his files and that there may be an "easy" correct for this problem.  I would appreciate any assistance that the net may be able to provide to solve this problem.  Thanks all.

Joe - W1LJN
CCA #85
Sponsored by the Collins Collectors Association http://www.collinsradio.org
Nets: Tues: 3.805 Mc-2000 Central / Thur: 3.875 Mc-2000 Central
Fri: 3.895 Mc-2000 Pacific / Sun: 14.263 Mc-2000 UTC
1st Wed (of the month) AM Net 3.880 Mc-2000 local (ET, CT, MT, PT)
Sun AM Net: 29.050 Mc-1200 Central


Date: Fri, 19 Mar 2004 15:34:20 -0500
From: "Joe & Dawn Nyberg" 

Subject: {Collins} More on the 30K-4 Transformer


It was suggested that I post the symptoms for analysis: I went on the air with the new transformer and reports were consistent that my audio was terribly distorted which was confirmed later when I monitored my transmissions on a local receiver.  I removed the new transformer and replaced it with the old one (a loaner from another rig) and went on the air again - no other changes whatever.  All reports were consistent that my audio was fine and with no distortion. When Howard Mills had tested the previous new transformer his comment was "...When I connected it to the transmitter the modulation pattern on the scope was very distorted...."  This is the only symptom that I can report.  Once again, thanks to the net.
Joe- W1LJN
CCA #85
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Nets: Tues: 3.805 Mc-2000 Central / Thur: 3.875 Mc-2000 Central
Fri: 3.895 Mc-2000 Pacific / Sun: 14.263 Mc-2000 UTC
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Sun AM Net: 29.050 Mc-1200 Central


Date: Fri, 19 Mar 2004 15:27:36 -0500
From: "Michael Tortorella" 

Subject: {Collins} in-rush current limiting


Good day all,
I was sure I remembered reading something on the list about installing a device in the power supply primary circuit to limit the in-rush current.  However, my search of the archives comes up empty of any specific recommendations.  Has anyone tried this?  If so, can you share any recommendations as to specific device types and/or part numbers?

aTdHvAaNnKcSe and 73 from snowy NJ
Mike W2IY
Sponsored by the Collins Collectors Association http://www.collinsradio.org
Nets: Tues: 3.805 Mc-2000 Central / Thur: 3.875 Mc-2000 Central
Fri: 3.895 Mc-2000 Pacific / Sun: 14.263 Mc-2000 UTC
1st Wed (of the month) AM Net 3.880 Mc-2000 local (ET, CT, MT, PT)
Sun AM Net: 29.050 Mc-1200 Central


Date: Fri, 19 Mar 2004 18:35:40 -0500
From: "Craig Roberts" 

Subject: {Collins} Re: in-rush current limiting


Hi Mike,

Please go to: http://www.ametherm.com/Inrush_Current/inrush_current_faq.html

You need to determine the current draw of your equipment (you didn't mention
what you are running) and wire the appropriate device in series with the
"hot" lead of the 117 VAC line into your rig. I built a couple of switched
power strip with current inrush limiters (and surge protectors) wired into
the outlets for my shack. I simply leave my fragile Collins power switches
in the "on" position and turn the rig(s) off and on from the protected power
strip.

Ametherm -- the friendly company that makes the current inrush limiters
mentioned above -- will send you a couple of free sample devices if you tell
them what you need. There's a request form on their web site. Equivalents
from Keystone are available from Mouser and other distributors.

73,

Craig
W3CRR


Sponsored by the Collins Collectors Association http://www.collinsradio.org
Nets: Tues: 3.805 Mc-2000 Central / Thur: 3.875 Mc-2000 Central
Fri: 3.895 Mc-2000 Pacific / Sun: 14.263 Mc-2000 UTC
1st Wed (of the month) AM Net 3.880 Mc-2000 local (ET, CT, MT, PT)
Sun AM Net: 29.050 Mc-1200 Central


Date: Fri, 19 Mar 2004 22:25:35 -0500
From: "Michael Tortorella" 

Subject: {Collins} In-rush current limiting


Dear Friends,
I am overwhelmed by the many and well-informed replies to my simple inquiry.  I have learned about thermistor approaches and approaches using resistors that are shorted by a delay relay.  Many very detailed recommendations accompanied these posts.  Now the archives will be ready for the next person with this question!  I am deeply grateful to all of you who replied and for the existence of this list which demonstrates once again that hams, and especially the hams who love Collins, are some of the greatest people around.
Warm regards to all,
Mike W2IY
Sponsored by the Collins Collectors Association http://www.collinsradio.org
Nets: Tues: 3.805 Mc-2000 Central / Thur: 3.875 Mc-2000 Central
Fri: 3.895 Mc-2000 Pacific / Sun: 14.263 Mc-2000 UTC
1st Wed (of the month) AM Net 3.880 Mc-2000 local (ET, CT, MT, PT)
Sun AM Net: 29.050 Mc-1200 Central


Date: Fri, 19 Mar 2004 19:59:33 -0600
From: Gene McCalmont 

Subject: {Collins} Re: in-rush current limiting


Hello Mike;
There has been a lot written on this topic on many boatanchor reflectors and
it has been the focus of much debate. There are a lot of different ways to
approach the problem, but essentially all approaches limit the initial surge
of current through the power supply then "step aside" to allow maximum
current flow. Some use electromechanical devices while others use a class of
thermistors designed specifically as inrush current limiters as Craig
mentioned in his post. I have used these thermistor devices on all of my
Collins (516F-2) and Drake (AC-4) power supplies without a failure for the
last 5 years. Perhaps this will give you a place to start.

As Craig mentioned, always wire the device in series with the "hot" side of
your AC mains AFTER the 5 amp fuse and before the front panel power switch.
I install the device using the fuse holder as a tie point and position the
device so that it does not interfere with other wiring or components, but
away from any metal that could act as a heat sink. Remember that when the
component is hot, it flows the most current, so you want it to stay hot
while operating. Craig's idea of placing the component in a power strip is a
good one and remember to install it after the strip's circuit breaker. I
choose to install the device in the power supply, but the overall effect is
the same.

These are the devices I've used with success:
516F-2 power supply = Keystone CL-70 (Mouser #527-CL70)
This is a 16 ohm device rated at 4 amps.
Alternate is a CL-60 (Mouser #527-CL60) which is rated at 10 ohms and 5
amps.
The CL-60 has a faster ramp-time than the CL-70 but has a higher power
rating. Both devices are rated high enough for use in your 516F-2.

For the receiver, I use a CL90 (Mouser #527-CL90) which is rated at 120 ohms
and 2 amps. This device has a much slower ramp-time than any of the above
devices which really gives a soft-start for my 75S-3B. The voltage drop when
operating is a bit higher as well but it still supplies about 110VAC to my
rig from a 120VAC mains.

Rule of thumb:
The higher the amperage capacity of the device, the lower the initial
resistance when cool and the lower the voltage drop when operating. Select a
device that closely approximates the maximum current the supply will draw.
Too little initial resistance does not provide enough inrush protection and
too much presents a high residual voltage drop and excessive ramp-time when
in operation.

Hope this helps and as in all things, others may have some valuable but
differing opinions that should be considered.

Best regards;
Gene

W5DDW
Gene McCalmont
CCA Member
Argyle Texas
gmcalmo@direcway.com

-----Original Message-----
From: collins-bounce@mailman.listserve.com
[mailto:collins-bounce@mailman.listserve.com]On Behalf Of Michael
Tortorella
Sent: Friday, March 19, 2004 2:28 PM
To: collins@listserve.com
Subject: {Collins} in-rush current limiting


Good day all,
I was sure I remembered reading something on the list about installing a
device in the power supply primary circuit to limit the in-rush current.


Mike W2IY

Sponsored by the Collins Collectors Association http://www.collinsradio.org
Nets: Tues: 3.805 Mc-2000 Central / Thur: 3.875 Mc-2000 Central
Fri: 3.895 Mc-2000 Pacific / Sun: 14.263 Mc-2000 UTC
1st Wed (of the month) AM Net 3.880 Mc-2000 local (ET, CT, MT, PT)
Sun AM Net: 29.050 Mc-1200 Central


Date: Fri, 19 Mar 2004 18:12:25 -0800
From: Bob KX6K 

Subject: {Collins} Fwd: Needed: K1 Relay for 32S-1


Greetings All
         Ours is a great hobby simply because all of you make it so.
         Many Thanks to all who responded to help find a/o repair
the needed relay.
         Your help has surely been appreciated.
Best of 73s
Bob KX6K


>X-Originating-IP: [209.249.124.21]
>X-Original-To: collins@listserve.com
>Delivered-To: collins@listserve.com
>X-Sender: kx6k@mail.comcast.net
>Date: Wed, 17 Mar 2004 18:21:57 -0800
>To: collins@listserve.com
>From: Bob 
>Subject: {Collins} Needed: K1 Relay for 32S-1
>X-archive-position: 12618
>Sender: collins-bounce@mailman.listserve.com
>X-original-sender: kx6k@comcast.net
>Reply-To: kx6k@comcast.net
>List-help: 
>List-unsubscribe: <>
>List-Id: 
>
>Greetings All
>         Need Relay K1 for the 32S-1. (coil has opened somewhere inside)
>It's a 14k ohm, 115vdc coil....
>Markings are: C.P.Clare... type 972-1353-00 ...#A-95183
>Surely do appreciate the help.
>In addition, is there anyone you might know of that does relay/coil rebuild?
>Many Thanks and
>Best 73s
>Bob KX6K
>kx6x@comcast.net
>
>
>Sponsored by the Collins Collectors Association http://www.collinsradio.org
>Nets: Tues: 3.805 Mc-2000 Central / Thur: 3.875 Mc-2000 Central
>Fri: 3.895 Mc-2000 Pacific / Sun: 14.263 Mc-2000 UTC
>1st Wed (of the month) AM Net 3.880 Mc-2000 local (ET, CT, MT, PT)
>Sun AM Net: 29.050 Mc-1200 Central

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Nets: Tues: 3.805 Mc-2000 Central / Thur: 3.875 Mc-2000 Central
Fri: 3.895 Mc-2000 Pacific / Sun: 14.263 Mc-2000 UTC
1st Wed (of the month) AM Net 3.880 Mc-2000 local (ET, CT, MT, PT)
Sun AM Net: 29.050 Mc-1200 Central


Date: Fri, 19 Mar 2004 18:40:52 -0500
From: "Ron Baker" 

Subject: {Collins} Re: Part Search


All,  regarding my search for the clear plastic dial window, several
suggested contacting the guy selling the reproductions located in Japan.
I found his e-mail address and made contact.   He replied quickly and
indicated he had them in stock.  They are $7.00 each and  $3.00 to ship,
several can be shipped for that amount.  He also has a website where he
sells several other Collins items such as meter faces and knobs.   He even
has the finger hole main tuning knobs for the "S" Line.

After I received the dial windows I'll let everyone know the quality of the
product and how well it work in the radio.

For Reference his E-mail address is:
ja3fr@jcom.home.ne.jp

His website catalog Link:
http://www.fr-radio.com/CollinsPartsCatalog.pdf

I received over 20 responses,  I would like to thank all those who offered
assistance, I greatly appreciate you help.

Thanks,  Ron / WB4HFN



----- Original Message ----- 
From: "Ron Baker" 
To: 
Sent: Wednesday, March 17, 2004 7:06 PM
Subject: {Collins} Part Search


> While restoring a KWM-2, removed to clean the clear plastic window with
red
> line used to calibrate the dial, I accidentally broke it.    Now I've done
> this several times with out a problem but it appears "Murphy" was on my
> shoulder this time.     Thus if anyone has the clear plastic window that
> they would be willing to sell it please let me know.
>
> My direct e-mail address is :  wb4hfn@wb4hfn.com
>
> 73,  Ron / WB4HFN
>
>
>
> Sponsored by the Collins Collectors Association
http://www.collinsradio.org
> Nets: Tues: 3.805 Mc-2000 Central / Thur: 3.875 Mc-2000 Central
> Fri: 3.895 Mc-2000 Pacific / Sun: 14.263 Mc-2000 UTC
> 1st Wed (of the month) AM Net 3.880 Mc-2000 local (ET, CT, MT, PT)
> Sun AM Net: 29.050 Mc-1200 Central
>
>


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Nets: Tues: 3.805 Mc-2000 Central / Thur: 3.875 Mc-2000 Central
Fri: 3.895 Mc-2000 Pacific / Sun: 14.263 Mc-2000 UTC
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Sun AM Net: 29.050 Mc-1200 Central


Date: Fri, 19 Mar 2004 13:19:11 -0800 (PST)
From: John Wyatt 

Subject: {Collins} FS: Collins PM-2 Power supply


Hi CCA members, I have, a still in package, a PM-2
power supply board, built by K1ROD.
The first $60.00 takes it shipping included.
Instructions included.
I'm gathering green atamps for Dayton.
73 John, W2VTV Carteret, NJ

__________________________________
Do you Yahoo!?
Yahoo! Mail - More reliable, more storage, less spam
http://mail.yahoo.com
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Nets: Tues: 3.805 Mc-2000 Central / Thur: 3.875 Mc-2000 Central
Fri: 3.895 Mc-2000 Pacific / Sun: 14.263 Mc-2000 UTC
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Sun AM Net: 29.050 Mc-1200 Central


Date: Fri, 19 Mar 2004 18:35:40 -0500
From: "Craig Roberts" 

Subject: {Collins} Re: in-rush current limiting


Hi Mike,

Please go to: http://www.ametherm.com/Inrush_Current/inrush_current_faq.html

You need to determine the current draw of your equipment (you didn't mention
what you are running) and wire the appropriate device in series with the
"hot" lead of the 117 VAC line into your rig. I built a couple of switched
power strip with current inrush limiters (and surge protectors) wired into
the outlets for my shack. I simply leave my fragile Collins power switches
in the "on" position and turn the rig(s) off and on from the protected power
strip.

Ametherm -- the friendly company that makes the current inrush limiters
mentioned above -- will send you a couple of free sample devices if you tell
them what you need. There's a request form on their web site. Equivalents
from Keystone are available from Mouser and other distributors.

73,

Craig
W3CRR


Sponsored by the Collins Collectors Association http://www.collinsradio.org
Nets: Tues: 3.805 Mc-2000 Central / Thur: 3.875 Mc-2000 Central
Fri: 3.895 Mc-2000 Pacific / Sun: 14.263 Mc-2000 UTC
1st Wed (of the month) AM Net 3.880 Mc-2000 local (ET, CT, MT, PT)
Sun AM Net: 29.050 Mc-1200 Central


Date: Fri, 19 Mar 2004 22:25:35 -0500
From: "Michael Tortorella" 

Subject: {Collins} In-rush current limiting


Dear Friends,
I am overwhelmed by the many and well-informed replies to my simple inquiry.  I have learned about thermistor approaches and approaches using resistors that are shorted by a delay relay.  Many very detailed recommendations accompanied these posts.  Now the archives will be ready for the next person with this question!  I am deeply grateful to all of you who replied and for the existence of this list which demonstrates once again that hams, and especially the hams who love Collins, are some of the greatest people around.
Warm regards to all,
Mike W2IY
Sponsored by the Collins Collectors Association http://www.collinsradio.org
Nets: Tues: 3.805 Mc-2000 Central / Thur: 3.875 Mc-2000 Central
Fri: 3.895 Mc-2000 Pacific / Sun: 14.263 Mc-2000 UTC
1st Wed (of the month) AM Net 3.880 Mc-2000 local (ET, CT, MT, PT)
Sun AM Net: 29.050 Mc-1200 Central


Date: Fri, 19 Mar 2004 19:59:33 -0600
From: Gene McCalmont 

Subject: {Collins} Re: in-rush current limiting


Hello Mike;
There has been a lot written on this topic on many boatanchor reflectors and
it has been the focus of much debate. There are a lot of different ways to
approach the problem, but essentially all approaches limit the initial surge
of current through the power supply then "step aside" to allow maximum
current flow. Some use electromechanical devices while others use a class of
thermistors designed specifically as inrush current limiters as Craig
mentioned in his post. I have used these thermistor devices on all of my
Collins (516F-2) and Drake (AC-4) power supplies without a failure for the
last 5 years. Perhaps this will give you a place to start.

As Craig mentioned, always wire the device in series with the "hot" side of
your AC mains AFTER the 5 amp fuse and before the front panel power switch.
I install the device using the fuse holder as a tie point and position the
device so that it does not interfere with other wiring or components, but
away from any metal that could act as a heat sink. Remember that when the
component is hot, it flows the most current, so you want it to stay hot
while operating. Craig's idea of placing the component in a power strip is a
good one and remember to install it after the strip's circuit breaker. I
choose to install the device in the power supply, but the overall effect is
the same.

These are the devices I've used with success:
516F-2 power supply = Keystone CL-70 (Mouser #527-CL70)
This is a 16 ohm device rated at 4 amps.
Alternate is a CL-60 (Mouser #527-CL60) which is rated at 10 ohms and 5
amps.
The CL-60 has a faster ramp-time than the CL-70 but has a higher power
rating. Both devices are rated high enough for use in your 516F-2.

For the receiver, I use a CL90 (Mouser #527-CL90) which is rated at 120 ohms
and 2 amps. This device has a much slower ramp-time than any of the above
devices which really gives a soft-start for my 75S-3B. The voltage drop when
operating is a bit higher as well but it still supplies about 110VAC to my
rig from a 120VAC mains.

Rule of thumb:
The higher the amperage capacity of the device, the lower the initial
resistance when cool and the lower the voltage drop when operating. Select a
device that closely approximates the maximum current the supply will draw.
Too little initial resistance does not provide enough inrush protection and
too much presents a high residual voltage drop and excessive ramp-time when
in operation.

Hope this helps and as in all things, others may have some valuable but
differing opinions that should be considered.

Best regards;
Gene

W5DDW
Gene McCalmont
CCA Member
Argyle Texas
gmcalmo@direcway.com

-----Original Message-----
From: collins-bounce@mailman.listserve.com
[mailto:collins-bounce@mailman.listserve.com]On Behalf Of Michael
Tortorella
Sent: Friday, March 19, 2004 2:28 PM
To: collins@listserve.com
Subject: {Collins} in-rush current limiting


Good day all,
I was sure I remembered reading something on the list about installing a
device in the power supply primary circuit to limit the in-rush current.


Mike W2IY

Sponsored by the Collins Collectors Association http://www.collinsradio.org
Nets: Tues: 3.805 Mc-2000 Central / Thur: 3.875 Mc-2000 Central
Fri: 3.895 Mc-2000 Pacific / Sun: 14.263 Mc-2000 UTC
1st Wed (of the month) AM Net 3.880 Mc-2000 local (ET, CT, MT, PT)
Sun AM Net: 29.050 Mc-1200 Central


Date: Fri, 19 Mar 2004 18:12:25 -0800
From: Bob KX6K 

Subject: {Collins} Fwd: Needed: K1 Relay for 32S-1


Greetings All
         Ours is a great hobby simply because all of you make it so.
         Many Thanks to all who responded to help find a/o repair
the needed relay.
         Your help has surely been appreciated.
Best of 73s
Bob KX6K


>X-Originating-IP: [209.249.124.21]
>X-Original-To: collins@listserve.com
>Delivered-To: collins@listserve.com
>X-Sender: kx6k@mail.comcast.net
>Date: Wed, 17 Mar 2004 18:21:57 -0800
>To: collins@listserve.com
>From: Bob 
>Subject: {Collins} Needed: K1 Relay for 32S-1
>X-archive-position: 12618
>Sender: collins-bounce@mailman.listserve.com
>X-original-sender: kx6k@comcast.net
>Reply-To: kx6k@comcast.net
>List-help: 
>List-unsubscribe: <>
>List-Id: 
>
>Greetings All
>         Need Relay K1 for the 32S-1. (coil has opened somewhere inside)
>It's a 14k ohm, 115vdc coil....
>Markings are: C.P.Clare... type 972-1353-00 ...#A-95183
>Surely do appreciate the help.
>In addition, is there anyone you might know of that does relay/coil rebuild?
>Many Thanks and
>Best 73s
>Bob KX6K
>kx6x@comcast.net
>
>
>Sponsored by the Collins Collectors Association http://www.collinsradio.org
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>Sun AM Net: 29.050 Mc-1200 Central

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Date: Fri, 19 Mar 2004 18:40:52 -0500
From: "Ron Baker" 

Subject: {Collins} Re: Part Search


All,  regarding my search for the clear plastic dial window, several
suggested contacting the guy selling the reproductions located in Japan.
I found his e-mail address and made contact.   He replied quickly and
indicated he had them in stock.  They are $7.00 each and  $3.00 to ship,
several can be shipped for that amount.  He also has a website where he
sells several other Collins items such as meter faces and knobs.   He even
has the finger hole main tuning knobs for the "S" Line.

After I received the dial windows I'll let everyone know the quality of the
product and how well it work in the radio.

For Reference his E-mail address is:
ja3fr@jcom.home.ne.jp

His website catalog Link:
http://www.fr-radio.com/CollinsPartsCatalog.pdf

I received over 20 responses,  I would like to thank all those who offered
assistance, I greatly appreciate you help.

Thanks,  Ron / WB4HFN



----- Original Message ----- 
From: "Ron Baker" 
To: 
Sent: Wednesday, March 17, 2004 7:06 PM
Subject: {Collins} Part Search


> While restoring a KWM-2, removed to clean the clear plastic window with
red
> line used to calibrate the dial, I accidentally broke it.    Now I've done
> this several times with out a problem but it appears "Murphy" was on my
> shoulder this time.     Thus if anyone has the clear plastic window that
> they would be willing to sell it please let me know.
>
> My direct e-mail address is :  wb4hfn@wb4hfn.com
>
> 73,  Ron / WB4HFN
>
>
>
> Sponsored by the Collins Collectors Association
http://www.collinsradio.org
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> Sun AM Net: 29.050 Mc-1200 Central
>
>


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Date: Fri, 19 Mar 2004 13:19:11 -0800 (PST)
From: John Wyatt 

Subject: {Collins} FS: Collins PM-2 Power supply


Hi CCA members, I have, a still in package, a PM-2
power supply board, built by K1ROD.
The first $60.00 takes it shipping included.
Instructions included.
I'm gathering green atamps for Dayton.
73 John, W2VTV Carteret, NJ

__________________________________
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Date: Sat, 20 Mar 2004 12:29:07 -0800
From: Bob KX6K 

Subject: {Collins} Re: Needed: K1 Relay for 32S-1


Greetings All:
Re: Sources
	Dave - Happily would have done so as a matter of course ... if there were 
any sources.
A few of our CCA fellows (bless their souls) were kind enough to offer an 
extra that they had.
By way of report to the Group:
- Following up with CP Clare and the companies to whom they sold their 
relay biz proved to be a dead end...no stock.
- Other suggested relay houses were checked but had no stock.
- SSN was interested and willing (as per discussions with them) to help by 
putting through a special build order if they got enough of a 'backorder' 
request.
	All of us are aware that parts are becoming more and more scarce, so once 
again I thank all of you as you are willing to share; as well as applaud
those of our members who take the time and effort for the special projects 
that they undertake in having parts made for us.
Kudos Gentlemen! and
Kudos to the Group for supporting them.
Best 73s
Bob KX6K



At 07:42 PM 3/19/2004 -0800, you wrote:
Bob...how about posting to the reflector the sources of the relay.

Regards

Dave Harmon
NSRCA 586
K6XYZ[at]comcast[dot]net
Torrance, Ca.

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Date: Sat, 20 Mar 2004 09:16:53 -0800
From: "Clair Truax" 

Subject: {Collins} KWM 380 Keypad


I need to make up a cable to connect the keypad to the 25 pin connector on
the interface at the back of the rig. Does anyone have a schematic showing
the pinout pattern of this?  If so I would appreciate a copy.  Thank you.

Clair  KJ6NJ
















----------------------------------------------------------------------------
----


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Date: Sat, 20 Mar 2004 17:24:02 -0500
From: "ROBERT FERREIRA" 

Subject: {Collins} KWS-1


LOOKING FOR KWS-1 IN EXCELLENT CONDITION BUT NOT AT THE EBAY PRICES.ALSO 75A-4
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Date: Sat, 20 Mar 2004 09:59:39 EST
From: Barockteer@aol.com

Subject: {Collins} Re: 32V1 microphone suggestions


I use an amplified D-104 and it sounds great. The preamp means the mic will 
drive the lower input impedance of the 32V without loosing bass response. I do 
modify the mic by adding 1Meg in series with the element going into the 
preamp. This helps bass response.
Tony, K1KP


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Date: Sat, 20 Mar 2004 09:54:03 -0500
From: 

Subject: {Collins} Re: in-rush current limiting... Why?


All:
Am I confused or, somehow, out of touch with reality? Most electrical assemblies experience an initial current surge (ISC) when turned on. A good deal of the design engineers' work goes into being sure that the assembly (radio, motor, light bulb, vacuum tube, etc. etc.) is not harmed by the ISC when it is powered up. To me. this means that all powered assemblies are designed to handle ISC. I have to believe that Collins engineers also took ISC in to account in ALL of their design work. So, why is an added "in-rush" protection device needed? If the power transformer, choke, filter capacitors, etc. in your favorite Collins power supply are breaking down due to age, overheating, etc., an "in-rush" protection device is not going to prevent the inevitable.

I can see where ISC protection might be of value if the design of an existing assembly is altered, say by replacing the vacuum tube rectifiers with solid state rectifiers.  Otherwise, I am not seeing any value at all. 
  
A bit of history. Hammarlund placed a high wattage resistor in series with the primary of the power transformers in some of their early receivers. Fixed almost against the high watt resistor was a bimetallic strip that would close after the resistor heated it up, shorting across the resistor and raising the voltage on the primary. This crude arrangement was one of the first "in-rush" devices I ever encountered. Hammarlund later abandoned such devices in their receivers. Presumably, they were not needed.

Cheers,

Al Link, K4ICL
ALink@K4ICL.com
139 Turner Circle
Greenville, SC 29609
864 420-4652
www.K4ICL.com

www.UREGS.org for Equipment Condition Rating Standards
  ----- Original Message ----- 
  From: Michael Tortorella 
  To: collins@listserve.com 
  Sent: Friday, March 19, 2004 3:27 PM
  Subject: {Collins} in-rush current limiting


  Good day all,
  I was sure I remembered reading something on the list about installing a device in the power supply primary circuit to limit the in-rush current.  However, my search of the archives comes up empty of any specific recommendations.  Has anyone tried this?  If so, can you share any recommendations as to specific device types and/or part numbers?

  aTdHvAaNnKcSe and 73 from snowy NJ
  Mike W2IY
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Date: Sat, 20 Mar 2004 08:38:19 -0500
From: W3QQQ@aol.com

Subject: {Collins} Wanted: RE 75S-3B or 75S-3 CCA Excellent Condx


Looking to purchase a round emblem 75S-3B or 75S-3. Must be in CCA excellent condition (if not CCA excellent, please don't respond). Thanks.

73,
Glenn W3QQQ@aol.com

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Date: Sat, 20 Mar 2004 01:17:29 -0800
From: "Don Davis" 

Subject: {Collins} Re: More on the 30K-4 Transformer


Sounds like the transfromer may be saturating.  Combination of DC bias
current and high peak current could cause the xfmr to saturate (then it
doesn't act like a trnasformer any more)  Could be wrong mu core, wrong
number of turns or an unbalanced number of turns on the input (I assume push
pull center tapped?).  If the number of turns is wrong, the xfmr could
saturate.  Often xfmrs are wound bi-filar, tri-filar, etc (means tha the
windings are put on with 2, 3, 4 wires in-hand at the same time).  The final
conection is made either in series or parallel, and I have seen xfmrs
connected wrong in this fashion by the mfgr.  I would make an accurate
4-wire measurement of the dc resistance of each winding - this will at least
tell whether or not the turns are roughly correct - compare with your old
unit.  Lastly, to see if the core is saturating, measure the modulator tube
cathode currents and slowly increase the mod level up from zero.  Should be
a nice linear increase in current as the audio is increased.  If the xfmr is
saturating, you will note a pronounced increase in current for a small
increase in audio.  How to cure it?  Gotta find out what's wrong first.
Lots of ways of stopping or reducing saturation involve series inductors,
etc.  As a lark, try reversing the secondary windings if you only have 2
windings (reversing the dc bias might help).  Don't do this if you have
feedback windings.  If you do have feedback windings, their polarity may be
wrong with respect to the others.

Good luck,

Don  AD6PB




> It was suggested that I post the symptoms for analysis: I went on the air
with the new transformer and reports were consistent that my audio was
terribly distorted which was confirmed later when I monitored my
transmissions on a local receiver.  > Sun AM Net: 29.050 Mc-1200 Central
>


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Date: Sat, 20 Mar 2004 18:49:21 -0500
From: john 

Subject: {Collins} Re: in-rush current limiting... Why?


At 09:54 AM 3/20/04 -0500, K4ICL@K4ICL.com wrote:
>designed to handle ISC. I have to believe that Collins engineers also took
ISC in >to account in ALL of their design work. So, why is an added
"in-rush" protection >device needed?

There were a lot of compromises at the time this old gear was made.
2 wire cords, exposed high voltage (though not often in Collins gear)
marginal cooling, etc. Likewise, at the time if a part died, it was a simple
matter to order a new one. That's no longer the case.

Voltage stress, thermal stress etc, all are factors in component longevity.

Collins gear is not above being made better with some careful 
additions. 

73
John K5MO


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Date: Sat, 20 Mar 2004 16:48:09 -0800
From: "Warren Pratt" 

Subject: {Collins} 32S-3 BFO Off Frequency


I'm repairing a 32S-3 (MCN 2047) and find that the BFO measures about 200 Hz low in frequency in all modes (LSB, USB, Tune, etc.).  I've checked all resistances and voltages on the oscillator, V2B.  I've also been able to get good measurements on the capacitors in the BFO circuit.  All appears as it should be per the manual and schematic.  I have another 32S-3 of the same vintage (MCN 1999) with a BFO that's dead on frequency.  The voltage, resistance, and capacitance measurements of the two units are virtually identical.  I also switched tubes between the two units with no frequency change in either unit.

This is all leading me to the conclusion that the crystals have drifted off frequency.  However, it also seems highly improbable that BOTH the LSB and USB crystal would become about 200 Hz low.  At this point, I'm thinking my next step is to buy replacement crystals and see if that fixes the problem.  Before I make the investment, any ideas or information on similar experiences would be greatly appreciated.

Thanks,

Warren, NR0V
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Date: Sun, 21 Mar 2004 10:32:37 -0800
From: "Joseph Orgnero" 

Subject: {Collins} WTB: manual


Hello all,
I am in need of a manual (GTM-D-186B) for the G-186B panadaptor used
with the G133F/51S-1 receivers. If anybody can provide me with a copy
I'll be happy to pay for the reproduction and mailing costs.
Thanks.
Joe Orgnero VE7LBI  CCA 96-418


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Date: Sun, 21 Mar 2004 09:48:15 -0500
From: Howard Sherer 

Subject: {Collins} 516F-2 FS


I have for sale an RE 516F-2  PS in a nice cabinet. The PS is working 
well and is in fair condition. The cabinet has been re-painted and looks 
very good. 

$350 plus shipping
Howard AE3T


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Date: Sun, 21 Mar 2004 09:51:37 -0500
From: Howard Sherer 

Subject: {Collins} Waters 3001 Hybrid Coupler FS


For sale a Waters mod# 3001 Hybrid Coupler in VGC. $50.
Howard AE3T

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Date: Sun, 21 Mar 2004 09:49:09 -0500
From: Howard Sherer 

Subject: {Collins} CP-1 FS


I have a CP-1 crystal pack for sale in VGC with the tool, and RE data 
sheet. There are 122 xtals included. There are 4 missing xtals from the 
complete set, these are 14.2, 18.0, 28.6, & 28.8. I would like $300.
I can email you a photo if desired.

Howard AE3T


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Date: Sat, 20 Mar 2004 23:23:37 -0900
From: "Tom Elmore" 

Subject: {Collins} 75S-3 Receiver S Meter


   I have recently started experiencing a problem with my 75S-3 receiver
every time I turn the receiver on the S meter reads about 3 or 4 units with
no incoming signal. If I set the S meter to  zero with the internal
adjustment it is fine until next time I turn the receiver on and then I have
to adjust it back to zero again. Does this sound familiar to anyone ?

Thank You
Tom Elmore

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Date: Sun, 21 Mar 2004 16:48:54 -0600
From: "Bob Kemp" 

Subject: {Collins} Collins f/s


Got some excess gear here to dispose of
R/E. 312B-4  $275. Nice shape w/4 interconnect cables. + $15. shipping.

75A4 - Clean chasis, 3 filters 2.1& 3.1 & 6 kc filters. This one is a real
beauty and I'm going to regret letting it go. Serial #2XX. Works fine,
original manual, had the .1's replaced and most coupling caps. $1350 plus
shipping. Got pics available. No scrapes, dings or dents.
Bob

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Date: Sun, 21 Mar 2004 21:25:33 -0800
From: "Clair Truax" 

Subject: {Collins} KWM 380 Keypad


I would like to purchase a keypad assembly for the KWM 380.  Anyone who has
one for sale please email me with details.  Thank you.

Clair  KJ6NJ





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Date: Mon, 22 Mar 2004 13:51:09 EST
From: JONWEINER@aol.com

Subject: {Collins} FS: Excellent RE Collins 312B-4 Station Console


Excellent condition late model Collins model 312B-4 Round Emblem station 
console for sale. Front panel, knobs, meter are near perfect. complete with copy 
of the original manual. One 3/8" mark on rear top of cabinet, and one 3/8" mark 
on side. Works perfectly. Price $325. 
Jon


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Date: Mon, 22 Mar 2004 13:49:35 EST
From: JONWEINER@aol.com

Subject: {Collins} FS: Round Emblem KWM-2 with Noise Blanker


I am selling one of my personal Round Emblem Collins KWM-2's. Excellent 
condition. Has original Collins factory installed noise blanker. I have been told 
this is a very rare transitional model, right when Collins was making the 
switch from WE to RE. Shows no wear (except a little bit around the finger hole). 
Knobs and panel look like new. Cabinet has no dents or dings, and has never 
been repainted. Complete with the original (not a copy) instructional manual. 
Photos available. Price: $1100.

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Date: Mon, 22 Mar 2004 13:39:21 -0500
From: "Glenn J. Zemanek" 

Subject: {Collins} 8R-1 crystal calibrator


I am looking for a  100khz 8R-1 crystal calibrator for my 75A3 that I am 
having professionally restored by W3HM

Glenn Zemanek  kc2fzv


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Date: Mon, 22 Mar 2004 19:18:52 +0100
From: "Georges Ringotte F6DFZ" 

Subject: {Collins} KWM-380 AM filter


Hello to all CCA members
I am looking for a 6 kHz AM filter for my KWM-380. I shall pay your price.
Have also a new original front panel for that rig and shall exchange it plus
a reasonable fee for your AM filter. Thank you very much to help me get that
filter.
Georges
F6DFZ
Lt-Colonel fire brigade of Vaucluse

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Date: Mon, 22 Mar 2004 14:42:23 -0600
From: 

Subject: {Collins} FS  302C-3 RE






For Sale RE 302C-3, excellent condition display unit with the pick-up unit
is good physical condition.  the unit works very well and agrees with my
Daiwa watt meter.  This is a special unit as it has C connectors instead of
N connectors.  This will come with C to N adapters.  $300 + shipping costs.

Gene K1GD

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Date: Mon, 22 Mar 2004 17:02:45 -0500
From: "sharon baumgardner" 

Subject: {Collins} 75a-3


radioers;
i live in lake city, florida. would someone in my area please contact me about my 75a-3 as i know nothing about it and would like to learn. thanks
steve baumgardner
baum2@alltel.net 

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Date: Mon, 22 Mar 2004 16:11:01 -0500
From: Howard Sherer 

Subject: {Collins} FS Main dial escutcheon for 32S-1


I have a main dial escutcheon for a 32S-1 for $40 OBO.
Howard AE3T


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Date: Mon, 22 Mar 2004 20:58:58 -0800 (PST)
From: Serg k 

Subject: {Collins} collins 490m-20 antenna coupler


Hi All.
Does any one have manual for 490m20, I just want to know how to make cable from coupler to power suply,I have mr 1000a collins station
tnx
73!
Serg
VE2QIP
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1st Wed (of the month) AM Net 3.880 Mc-2000 local (ET, CT, MT, PT)
Sun AM Net: 29.050 Mc-1200 Central


Date: Mon, 22 Mar 2004 20:18:52 -0600
From: "Ron Samchuk" 

Subject: {Collins} Need bristol wrenches


I am new to Collins equipment and now realize that I need a set of Bristol wrenches.  Any suggestions as to source and pricing for these wrenches?  Thanks from Ron VE4SR
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Date: Tue, 23 Mar 2004 08:44:18 -0500
From: "Douglas Ensor" 

Subject: {Collins} Relay for 30L-1?


Does anyone have a good relay to replace the one in my 30L-1?  Surplus Sales
lists it as a KR2565-1 (P&B or Deltrol).  The one in the amp 
appears to be a P&B KR-2916. Thought I would check here before have to call
SSN. 
 
I think the same one is used as the antennna changeover relay in the
32s-1/s-3 and in the KWM-2 (without plug-in relays). It's 110vdc coil, 10k
ohms resistance, DPDT, open frame and I think 2a contacts. 
 
There actually is a current Tyco/P&B product that meets those specs with 5a
contacts, but it's slightly larger, which looks like too much so for the
30L-1. It may be worth considering for anyone who needs one for 32s-x/KWM-2
depending on space available. RF Parts stocks those at a good price too.
 
Thanks,
 
Doug, K8DE
Ann Arbor, MI

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Date: Tue, 23 Mar 2004 09:23:31 -0500
From: "Frederick W. Holmes, W1SKU" 

Subject: {Collins} Net Tonight


Hello to All,

Well, it's Tuesday, so that means that there is a CCA SSB 75 meter net
tonight on 3875 Kc at 8:00 Central, 9:00 Eastern. Your scheduled NCO is
Bill, K2RIG. Please warm up those Collins rigs and let's hear you on the
net.

Also, please remember that the CCA is having a Special Event station on the
air this Saturday, March 27, from the Hammond Museum of Radio in Guelph,
Ontario, Canada. We will be on 14.263 mc and 7.263 mc  +/- QRM, from approx.
13:00 PM to 15:00 PM EST. Some of the operators will be, Floyd, W8RO; Fred,
W1SKU; Scott, WN1B and Rich, K8PJQ.  We believe we will be using the
museum's call of VE3HC. If not, we will be using one of our own calls
/VE3.We will be sending out certificates for the event. Please QSL to W1SKU
at QRZ.COM address. Please include an SASE with your QSL card.If you do not
want the certificate folded, please send an 8 1/2 X 11 envelope with
postage.

73 de Fred, W1SKU
Net Manager
CCA Member #793

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Date: Tue, 23 Mar 2004 16:42:16 +0200 (SAST)
From: Ludwig Combrinck 

Subject: {Collins} Re: Collins station on Marion Island (AF021)



Hi All

I will be setting up a Collins station on Marion Island, from about the
7th - 30th of April.

More info at http://www.hartrao.ac.za/geodesy/marionweb/main.html

Regards

Ludwig

ZS6WLC

+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
Ludwig Combrinck Ph.D
Programme Leader
HartRAO Space Geodesy Programme
PO BOX 443
Krugersdorp 1740
South Africa
e-mail: ludwig@hartrao.ac.za
Tel: +27 12 326-0742
Fax: +27 12 326-0756
IGS Regional Data Center for Africa
URL: http:\\www.hartrao.ac.za\geodesy\geodesy_index.html
+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++


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Date: Tue, 23 Mar 2004 10:03:15 -0500
From: "Frederick W. Holmes, W1SKU" 

Subject: {Collins} Net Frequency Correction


Hello to All,

I just saw my message about tonight net post, and I see that I put the wrong
frequency for tonight's net. The right frequency is, of course, 3805 Kc.

Talk to you all tonight.

73 de Fred, W1SKU
Net Manager

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Date: Tue, 23 Mar 2004 09:59:00 -0500
From: "Mike WA6VTN" 

Subject: {Collins} Collins Gear Trade


Hello Gang,

    My friend Steve (W8TOW) sent me this email and I am forwarding it on to
this list as I have no interest. Please respond to Steve directly at
wb9tow@egr.msu.edu .

Best Regards,
Mike Monnier
WA6VTN/8



Mike,
 I have a excellent, 75A3, works fine. Comes with : 800 hz & 3.1 khz
Collins
 and 4.0 & 6.0 Murata filters. Collins gear reduction knob and drive, HB
 xtal calibrator. New PS caps, w/ several new .01/.1 caps.
 Cabinet nice, no extra holes, dents, etc....

 AND

 Collins 75S3, excellent shape, works fb, has standard SSB and CW Collins
 filters installed. No mods......

 FOR TRADE ONLY....I WILL TRADE EVEN UP THESE TWO RX FOR A COLLINS 75A4, W/
 GEAR REDUX AND 3 FILTERS. MUST WORK AND LOOK GOOD!

 prefer an in person exchange. in MICHIGAN...to save damage due to shipping

73, Steve W8TOW




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Date: Tue, 23 Mar 2004 10:37:49 -0500
From: Roy Morgan 

Subject: {Collins} Re: Relay for 30L-1?


At 08:44 AM 3/23/2004 -0500, Douglas Ensor wrote:
>Does anyone have a good relay to replace the one in my 30L-1?   ...
>There actually is a current Tyco/P&B product that meets those specs with 5a
>contacts, but it's slightly larger,

For those searching for this part at RF Parts,
it is part number 303D10
shown at: http://www.rfparts.com/relay.html
price: $24.95

I do not know if it will fit the space or not.


Roy


- Roy Morgan, K1LKY since 1959 - Keep 'em Glowing!
7130 Panorama Drive, Derwood MD 20855
Home: 301-330-8828 Work: Voice: 301-975-3254,  Fax: 301-948-6213
roy.morgan@nist.gov --

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Date: Tue, 23 Mar 2004 08:45:35 -0500
From: "Mike WA6VTN" 

Subject: {Collins} Fw: Hi Steve


Hi Gang,

This was sent to me from a friend. Please respond directly to him if your
interested.

Mike Monnier
WA6VTN/8


> ----- Original Message -----
> From: "steve" 
> To: "Mike WA6VTN" 
> Sent: Monday, March 22, 2004 1:33 PM
> Subject: Re: Hi Steve
>
>
> > What  a good time this weekend...the swap was ho humm but, after the
swap
> > was the best....
> > glad we got to share a beer.....
> > I posted this...pass it around in case you know anyone....
> > 73 steve
> >
> > I have a excellent, 75A3, works fine. Comes with : 800 hz & 3.1 khz
> collins
> > and 4.0 & 6.0 Murata filters. Collins gear reduction knob and drive, HB
> > xtal calibrator. New PS caps, w/ several new .01/.1 caps.
> > Cabnet nice, no extra holes, dents, etc....
> >
> >
> > AND
> >
> >
> > Collins 75S3, excellent shape, works fb, has standard SSB and CW Collins
> > filters installed. No mods......
> >
> >
> >
> >
> > FOR TRADE ONLY....I WILL TRADE EVEN UP THESE TWO RX FOR A COLLINS 75A4,
W/
> > GEAR REDUX AND 3 FILTERS. MUST WORK AND LOOK GOOD!
> >
> > prefer an in person exchange. in MICHIGAN...to save damage due to
shipping
> >
> >
>
>


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Date: Tue, 23 Mar 2004 12:51:47 -0500
From: "Donald Nesbitt" 

Subject: {Collins} Sell KWM-2/30L-1/516F-2/DX Eng Processor


Hello to the list.  I am doing some serious downsizing and have the
following for sale:

KWM-2 WE # 11571 (original manual) $545

30L-1 RE # 2749 MCN 1549 (New Cetron 811A's, new line cord - copy of manual)
$680

516F-2 WE # 10250 (no manual) (only sold with or after the KWM-2)  $285

DX Engineering Processor for KWM-2/2A # 7006 (no manual)  $185

All are very clean in excellent condition.  To see photos, please go to:
http://www.bellsouth.net/p/pwp-zut and click on Photo Albums at the top of
the page.  The pictures are low resolution.  High resolution pictures are
available.

Items are aggressively priced as noted and will be sold to the first person
who actually commits to buy (i.e.: "I will buy . . . ").  516F-2 will only
be sold with or after the KWM-2.

Buyer pays packing, shipping and insurance.  516F-2 will be shipped in two
separate cartons.  I am in Atlanta, Georgia.  Pick up would be nice!

Please respond off list either via email or telephone. (404) 218-3595
Cellular. Thanks es ' 73 --don n4hh

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Date: Tue, 23 Mar 2004 13:20:21 -0500
From: "Kevin Olson" 

Subject: {Collins} Collins 51S-1 for sale


WE 51S1 with more useful 300 cps CW filter in cabinet. Very nice condition,
works great.
SN around 2000. $1200 plus shipping. Reply to kolson@erols.com.

Regards, Kevin K3OX


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Date: Tue, 23 Mar 2004 13:51:19 -0500
From: "Donald Nesbitt" 

Subject: {Collins} Sell KWM-2/30L-1/516F-2/DX Eng Processor


The KWM-2 and 516F-2 are sold.  Thanks to all who responded so quickly.  I
am told that the web site that has the pictures is not responding and that
the following address works.  You might want to give it a try:

http://home.bellsouth.net/p/pwp-zut

I still (it's only been 30 minutes or so since being listed!) have the 30L-1
and the DX Engineering Processor.

30L-1 RE # 2749 MCN 1549 (New Cetron 811A's, new line cord - copy of manual)
$680

DX Engineering Processor for KWM-2/2A # 7006 (no manual)  $185

 Both are very clean in excellent condition.  To see photos, please go to:
http://home.bellsouth.net/p/pwp-zut and click on Photo Albums at the top of
the page.  The pictures are low resolution.  High resolution pictures are
available.

Items are aggressively priced as noted and will be sold to the first person
who actually commits to buy (i.e.: "I will buy . . . ").

I am in Atlanta, Georgia.  Pick up would be nice!

Please respond off list either via email or telephone. (404) 218-3595
Cellular. Thanks es ' 73 --don n4hh

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Date: Tue, 23 Mar 2004 15:53:28 -0500
From: Rusty Blackston 

Subject: {Collins} k1rod's production link


Does anyone have the link to the page  where production date are?
Thanks,
Rusty

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Date: Tue, 23 Mar 2004 17:00:17 EST
From: JONWEINER@aol.com

Subject: {Collins} FS: Collins 516F-2 power supply


Excellent condition Collins 516F-2 power supply. Original power cord and 
connector. Chassis, transformer, chokes look "as new."  Works fine. This is the 
power supply only, no enclosure. Price: $300.
Jon


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Date: Tue, 23 Mar 2004 16:30:26 -0500
From: jharlin@fau.edu

Subject: {Collins} WTB knurled knob for KWS-1


Both PA tuning and loading have 24 to 1 turn counting dials on the 
KWS-1.  One of my knurled knobs has a stiff wheel inside the knob 
itself--it works but needs to move more easily--and lubrication does not 
work.  I think there is physical damage to the gear wheel.  I can get the 
20 to 1 dials from Allied, but everything else is fine--so would like to 
find just the knob itself.

Thanks,
John
W3HPW

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Date: Tue, 23 Mar 2004 17:34:47 -0500
From: "Wn4i" 

Subject: {Collins} WTB : Collins KWM-380 6Khz AM filter " AC-3813 " 


Hello All .....please look if you can find me a 6 Khz AM filter for a 380 .
"" AC-3813 ""  "" 642-2442-001 ""
I can test it myself with my Collins filter fixture .....in case you dont
know how good it is .

Best Regards
Steve  Wn4i   561-689-8819

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Date: Tue, 23 Mar 2004 17:56:59 -0500
From: "Donald Nesbitt" 

Subject: {Collins} Re: Sell KWM-2/30L-1/516F-2/DX Eng Processor


The DX Engineering Processor is sold.  I still have the 30L-1.

Thanks to all who responded so quickly.  I am told that the original web
site address that has the pictures is not responding and that the following
address works.  http://home.bellsouth.net/p/pwp-zut  You might want to give
it a try to see pictures of the 30L-1:

30L-1 RE # 2749 MCN 1549 (New Cetron 811A's, new line cord - copy of manual)
$680

To see photos, please go to: http://home.bellsouth.net/p/pwp-zut and click
on Photo Albums at the top of
the page.  The pictures are low resolution.  High resolution pictures are
available.

The 30L-1 will be sold to the first person who actually commits to buy
(i.e.: "I will buy . . . ").

I am in Atlanta, Georgia.  Pick up would be nice!

Please respond off list either via email or telephone. (404) 218-3595
Cellular. Thanks es ' 73 --don n4hh

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Date: Tue, 23 Mar 2004 19:00:47 EST
From: Barockteer@aol.com

Subject: {Collins} Re: WTB knurled knob for KWS-1


John-
The knobs on the KWS-1 are famous for giving trouble. There are two things 
you might check to help alleviate the problem.

The basic design flaw is that the knobs Collins selected were never designed 
to be used to apply as much torque as is needed to rotate the roller inductors 
and the gear train with the capacitors. Very early photos of the KWS-1 show 
smaller knobs. These are in fact the pot-metal knobs inside the knurled outer 
piece. It's obvious to me that early users had difficulty turning the knobs, so 
Collins added the knurled outer piece to give users a bigger knob to grab 
onto.

But over the years, users found that the knobs slipped on the shaft. The easy 
fix for this was to overtighten the set screws - but this lead to probblem #1 
- the hole in the pot metal piece gets out of round. I fixed this in my KWS-1 
by carefully shimming the shaft. I took a piece of used copper braid 
('solder-wick') and cut it about 1/8" long. I carefully get this in between the shaft 
and the knob on the elongated side. Then I tighten the set screw the minimum 
amount needed to prevent slipping.

You see, when the hole gets out of round, the knob gets cocked on the shaft, 
and the gear no longer rides correctly. Correcting the out-of-roundness goes a 
long way towards making the gear roll better.

Second, the exact depth that you install the knob is also critical. If you 
put it on too far, the gear gets very 'crunchy' feeling, and will certainly wear 
out quickly. If you put the knob on too far out from the panel, the gear may 
disengage and the counter dial slips and looses track.

The PA Tune control has the greatest torque load. Anything you can do inside 
the PA cage to make this shaft turn easily will help the situation. The roller 
inductor on this has very high contact pressure and a very stiff spring. Most 
of the friction occurs between the roller and the shaft of the roller 
inductor. You may wish to VERY SPARINGLY lubricate the shaft - this will reduce the 
torque dramatically. There have been several web threads on whether this 
lubrication should use conductive grease or not. I used silicone grease 
(nonconductive) and that worked fine. Silver loaded conductive grease is available but 
it's very expensive. You do not want to get any kind of grease on the inductor 
itself! Don't use DeOxit - it's designed to clean and leave a protective film, 
not to be a lubricant. It will seem to work, but a week later it will all be 
dried up and the shaft  will be stiff again.

Hope this helps-


Tony, K1KP


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Date: Tue, 23 Mar 2004 17:26:36 -0700
From: "Walter E. Cheatham" 

Subject: {Collins} He said it Best and said it all.


Hi All,

I was just looking at Donald Nesbitt's web page that he has linked in 
his selling post today - http://home.bellsouth.net/p/pwp-zut - and 
noticed his statement at the bottom of the page fits EXACTLY how I feel 
about Collins equipment. I "quote" it below.

To me, the S-Line gear just "looks right" - "feels right" - and even 
"smells right"! It's ham radio to me!


Don, thank you for summing up with what Collins means to me. I know I'm 
not the only one that feels this way but it is pleasant to share the 
feeling with others.

Thanks Don,

Walter Cheatham (Still working on getting my license)
near Phoenix AZ

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Date: Tue, 23 Mar 2004 17:29:56 -0800
From: "Ed Jose" 

Subject: {Collins} 3 items


Hello List:  To Ron Samchuk who was looking for Bristol Wrenches; there is a set on E Bay at the present time.  Look into "Collins Radio" and they are on page two of the list.
And now a couple of questions from a Collins newbie.  From time to time Collins guys post comments on the quality of S line receivers.  You know, is a 75 S-3 better than a 75 S-3B and the like.  Anyone care to give his opinion for this and a rundown for a new guy.
Question two is why are there so many of you who think that E Bay prices are high?  Any comments on this one. Are they really?
Thanks,
Ed N6ICG
Lafayette, CA
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Date: Tue, 23 Mar 2004 17:44:48 -0600
From: Bob Peters 

Subject: {Collins} Mics F/S


I have a very  nice  EV-664 with cable and wring diagram  for
$125.00.
Have also a HEIL  dual element mike  with a cable  for  $100.00.
Has the HC-4 and HC-5 element.
Have a Heil Foot switch for $25.00.

Best 73's  Bob W1PE
Mesquite, TX 75149



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Date: Tue, 23 Mar 2004 17:43:04 -0600
From: Bob Peters 

Subject: {Collins} 312B-3  F/S


Have the above speaker F/S in CCA  VG  for $225.00.  Speaker works
and in good shape..Shipping  from  Mesquite area...
Best 73's  Bob W1PE
Mesquite, TX 75149


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Date: Tue, 23 Mar 2004 18:57:57 -0800 (PST)
From: Glen Zook 

Subject: {Collins} Re: 3 items


I have replied to this question a number of times!

In my book the 75S-3 and 75S-3A have a slight "edge"
on the 75S-3B and 75S-3C.  First of all, the 200 Hz CW
filter was standard in the 75S-3 and 75S-3A whereas it
was a fairly high priced option in the 75S-3B and
75S-3C.  If you run across either the 75S-3 or 75S-3A
that does not have this filter then someone has
removed it probably to sell for a high price!

The 75S-3A that I own was previously owned by the
Collins Radio technician who went around to the
military bases repairing S-Line problems that the
military technicians could not take care of.  Every
one of the circuit changes that were made in the
75S-3B / 75S-3C were tried in this particular
receiver.  Every one of them except one was removed
because it affected the performance in a negative
manner.  The one change that was left in the receiver
was the addition of a Zener diode to regulate the
voltage on one of the oscillator stages.

The differences between the characteristics of the
75S-3 and 75S-3A when compared with the 75S-3B and
75S-3C are very subtle.  Unless you use both the early
receivers and the later receivers for a while you will
not really notice the differences.  I owned both a
75S-3 and 75S-3A for over 25 years before trading off
the 75S-3 for a 75A4.  I have also serviced a "fair"
number of the 75S-3B and 75S-3C receivers.

The actual performance is very hard to put into exact
words.  However, when you use both series of receivers
you get a general "feel" of how each model works and
the 75S-3 and 75S-3A just seem to work better under
QRM situations, the AGC seems to be a little bit
better, and so forth.  The difference is not that
great, but the tendency is that the 75S-3 and 75S-3A
have a slight "edge" on the 75S-3B and 75S-3C.  

Also, the "joke" is that the 75S-3B and 75S-3C were
built after the IEs (Industrial Engineers) got
involved along with the "bean counters" (the
accounting people) and the technicians started taking
out parts until the receiver stopped working.  Then,
they replaced the last part that they removed!  Of
course this isn't really true, but the later receivers
were supposedly a little bit cheaper to manufacture.

Now, any of the 75S-3 series is much better than the
75S-1 and 75S-2.  I own 2 different 75S-1 receivers
and can definitely "vouch" for this.

Before I bought my first 32S series transmitter I
operated my 75S-3A in parallel with my Heathkit SB-301
receiver.  Frankly, 9 times out of 10 the Heath would
do anything that the Collins would do.  But, that
tenth time!  Thus, I went looking for a 32S-3
transmitter.  I found a 32S-3, 75S-3, and 516F-2 for
what I was willing to pay for the 32S-3 alone.  The
units had been near the coast of the Gulf of Mexico
near Houston, Texas.  The tops of the chassis were
discolored from the salt air.  But, the original owner
had been a heavy smoker and the nicotine had actually
protected the underside of the chassis (the condition
was near perfect!).

It is that 75S-3 that I traded off for a 75A4 several
years ago.  I next got to purchase a 75S-1, 32S-1, and
PM-2 power supply for the grand total of $150!  I sold
the PM-2 for $80 (it was rough but worked - this was
in 1978) since I had a "spare" 516F-2.  I later
obtained another 32S-1 that was 1500 units later in
the production run and traded off the original 32S-1. 
Next, about a year ago, I obtained another 75S-1
receiver.

I rate the Heath SB-300, then the 75S-1 / 75S-2, then
the Heath SB-301, then the 75S-3B / 75S-3C, and
finally on top, the 75S-3 / 75S-3A.  I find that the
Heath SB-300 can do the job about 75 percent of the
time; the 75S-1 / 75S-2 can do the job about 80
percent of the time; the SB-301 can do the job about
90 percent of the time; the 75S-3B / 75S-3C can do the
job about 98 percent of the time; and finally the
75S-3 / 75S-3A 100 percent of the time.  This is
entirely my personal opinion and others may certainly
disagree with me.

Either the 75S-3 / 75S-3A series or the 75S-3B /
75S-3C receivers will work fine.  However, you are
going to pay a "bit" less for the 75S-3 than you will
pay for the 75S-3B.  A 75S-3C will be more expensive
than either the 75S-3 or 75S-3B.  There were only
about 500 of the 75S-3A receivers built so you will
definitely pay a premium for one of them in good
shape.

By the way, I do manufacture additional crystal decks
for any of the 75S series receivers or the KWM-2
series transceivers.  These add additional bandswitch
positions (extra coverage) without having to do any
modification to the equipment at all.  You just have
to remove a single screw, mount the board, plug it
into various positions on the "top" crystal board, and
replace the single screw.  More information on these
is on the zcomco website that is listed at the end of
this message.

As for eBay, many people seem to get "caught up" in
the excitement of an auction and pay more than what
the same item will go for on the "open" market.

Glen, K9STH


--- Ed Jose  wrote:

>From time to time Collins guys post comments on the
quality of S line receivers.  You know, is a 75 S-3
better than a 75 S-3B and the like.  Anyone care to
give his opinion for this and a rundown for a new guy.


=====
Glen, K9STH

Web sites

http://home.comcast.net/~k9sth
http://home.comcast.net/~zcomco

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Date: Wed, 24 Mar 2004 07:17:12 -0500
From: "Donald Nesbitt" 

Subject: {Collins} Re: Sell KWM-2/30L-1/516F-2/DX Eng Processor - ALL SOLD


Thanks to all who responded - all items have been sold.  73 es gud dx --don
n4hh

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Date: Wed, 24 Mar 2004 02:07:33 -0600 (CST)
From: ronaldron@webtv.net (Ronald Mott)

Subject: {Collins} 75a1 poor sensitivty.


I am looking for cq article on 75a1 conversion for better sensitivty
dated sept.1951,or any outher info on 75a1 inprovements.
Ron  n0blg.

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Date: Tue, 23 Mar 2004 22:56:11 -0500
From: "Lawrence Bcst Consulting" 

Subject: {Collins} 120 vdc relays


Hello to the list. I don't remember who was looking for the relay
for a 30L-1 but I just got done checking the qth.com classifieds
and there's a listing for two 120 vdc dpdt relays for an SB-220
for sale. I don't know about the dimensions but they're going for
$15 each.

                                                      73,

                                                Rich WB3JLK

                                                CCA #331

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Date: Wed, 24 Mar 2004 05:58:41 -0700
From: "Max" 

Subject: {Collins} 51J-4 FS


FOR SALE,  51J-4  WITH 4 TO 1 MAIN TUNING KNOB,  CABINET,  4 MECH FILTERS, 1KC, 3KC, 6KC AND 9KC, RECENT ALIGNMENT.  YOU PAY SHIPPING FROM PHOENIX, 85018. $1,400
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Date: Wed, 24 Mar 2004 11:09:34 EST
From: K5lxz@wmconnect.com

Subject: {Collins} lost email address


I have lost the email addresses for wd9x and another person interested in my 
32S1 transmitter.  Would you guys please email me so that I can bring you up 
to speed.
Thanks to the reflector.
Ray W5EW

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Date: Wed, 24 Mar 2004 08:00:58 -0800 (PST)
From: Glen Zook 

Subject: {Collins} Re: 75a1 poor sensitivty.


First of all, try a TV type balun coil for the antenna
input.  The article that appeared in Electric Radio a
while back can be found on either of the websites that
are listed at the end of this message.

Several "locals" (local to me) amateurs were
complaining about lack of sensitivity.  When they
tried the TV balun "trick" the sensitivity was as good
as any of their more "modern" equipment.

The problem is the fact that the antenna feed
impedance of the 75A1 is for balanced line of much
higher impedance than 50 ohm coaxial cable.  Although
a TV balun is not "perfect", it does eliminate all
sorts of problems when using coaxial feed for your
antenna.

On my Collins 51J2 I found the sensitivity when
measured with a service monitor (that has 50 ohm
output) varied from 6 dB to over 20 dB improvement
(depending on the individual band - the 51J2 has 30
bands each 1 MHz wide) when I installed a TV balun.

The TV baluns have a type "F" connector on them.  You
can either make up a short piece of RG58/U with a type
"F" male on one end and a UHF (SO-239 style) connector
on the other or there are all sorts of adapters that
will take the type "F" to a BNC or other normal
amateur radio type connector.  I use the BNC adapter
on all of my "boat anchor" receivers that require a
balanced antenna.

This "trick" works on most receivers that have the
3-terminal type of antenna connectors.  However, some
of the later receivers were designed to use 50 ohm
coax and still had this type of connectors (like the
75A2, 75A3, NC-300, NC-303, etc.).  The balun will not
do that much good on those receivers.

A TV balun is supposedly made to convert 300 ohms
balanced to 75 ohms unbalanced.  However, they are not
that accurate!  As such, although they are not
"perfect", they do an excellent job of converting 50
ohm coaxial cable to the unbalanced input of the 75A1.

Any TV balun that has been manufactured in the past 10
years should be fine since cable TV systems require
that such baluns have to make it down to at least 5
MHz.  In fact, virtually all of these baluns make it
down to the AM broadcast band without any problem. 
Those that were made before 1990 may, or may not, make
it down into the broadcast band.

Glen, K9STH


--- Ronald Mott  wrote:

I am looking for cq article on 75a1 conversion for
better sensitivty dated sept.1951,or any outher info
on 75a1 inprovements.


=====
Glen, K9STH

Web sites

http://home.comcast.net/~k9sth
http://home.comcast.net/~zcomco

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Date: Wed, 24 Mar 2004 08:55:26 -0600
From: 

Subject: {Collins} 75A-4 restoration project, mentor?


I saw a 2002 article by Chuck Rippel WA4HHG about getting digital photos
of a restore.  Did anyone ever take that on?  
 

I got a 75A-4 from an uncle.  It has a bad hum and I've seen the
suggestion to replace the 3 section electrolytic can capacitor.  I've
see some other caps with 'stuff' leaking out them and one cracked one.
I have removed one cap from the radio so far, so I could still do the
restoration photo tour.  I don't have any experience doing restoration,
but I can make a clean solder joint.  I'd like all the 'free advice' I
can get!

 

I looked for more e-mail from Chuck but didn't find any.  Is he still
active in the club?

 

I'm dying to get this receiver running.  I could go slow and photograph.
I would like to get into some iterative process with someone (hopefully
CCA members) where I get advice, make the changes, post the pictures and
text on the web, and repeat.  I'd like to do it nice but I don't really
know how.  

 

Anyone interested in mentoring this project, via e-mail?

 

Thanks,

 

Greg

 

 


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Date: Wed, 24 Mar 2004 09:03:42 -0800
From: "Ed Jose" 

Subject: {Collins} Thanks


Thanks to all those who answered my rather "basic" questions about E Bay and Collins receivers.
I obtained a wealth of information.  You guys are good!
73
Ed, N6ICG
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Date: Wed, 24 Mar 2004 11:58:03 -0800
From: "mail.bellsouth.net" 

Subject: {Collins} F.S. The First 50 Years


I have an excellent original edition of the book:  "The First 50 Years" (w/ jacket cover) . A history of Collins Radio Co.&
Collins Division of Rockwell International copyright 1983, by the communication dept. 
Rockwell International Cedar Rapids, IA    Asking $50 plus shipping.
Tnx & 73

Windy, W4ZAA
  


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Date: Wed, 24 Mar 2004 11:24:48 -0500
From: "Bob Rinaldi" 

Subject: {Collins} WTB: Heil CC-1 for Collins


Hello:
Looking for a Heil CC-1 cable for Collins.

Thanks,
Bob
W1CNY
.

..

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Date: Wed, 24 Mar 2004 16:24:27 EST
From: W1TXJOHN@aol.com

Subject: {Collins} WANTED 744A-2 CONV KIT


I would like to purchase a couple of 744A-2 conversion kits for a 75S3B to 
make a 75S3C.Anyone who would like to get rid of one please contact me.Tnx John 
W1TX

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Date: Wed, 24 Mar 2004 15:18:37 -0600
From: "Laird Tom N" 

Subject: {Collins} WTB: 32S-3


I am in the market for a CCA VG or Excellant 32S-3 transmitter.=20
Please reply with overall condition and price.

Will be going to Dayton, possible pickup there....

Thanks,

Tom Laird WC9M
Moline, IL.

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Date: Wed, 24 Mar 2004 21:16:00 -0800 (PST)
From: Bob W6JCW 

Subject: {Collins} 75A-2 Mods


I recently picked up a 75A-2 (SN:1420) and have
discovered a couple mods. 

1.  1st and 2nd mixers have been changed from 6BE6's
to 6BA7's.  The manual I have shows 6BA7 mixers, but
the rcvr chassis is stamped for 6BE6's and the tube
sockets have been changed.  Is this a common mod ??

2. There is a new tube added just in front of the FM
adapter socket..a 6AU8..power is from the socket, but
several wires run out into the receiver, and there's
an additional toggle switch added to the receiver. 
Anyone
have any idea whwt this mod might be, and what it
does??

I haven't powered the rcvr up yet as it's been a
loooooong time since it was last used and I'm changing
electrolytics..hope to get it fired up next week
sometime, but before I do would like some info on the
above mods if anyone has any info..

Thanks   Bob  W6JCW
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Date: Thu, 25 Mar 2004 00:15:51 -0500
From: Bill Abate 

Subject: {Collins} Replacement Transformer and Chokes for 516F-2


  > I heard from the manufacturer today regarding the transformers and
  > chokes.  He has started production.  All transformers and chokes
should
  > ship within the next three weeks.  For those of you that ordered
only
  > chokes, those should ship within the next week.
  >
  > Thank you to all that sent in payment and made this project
possible.
  > When we can order a larger quantity like this the costs are very
  > reasonable.  Sorry but no further orders can be accepted at this
time.
  > If interest warrants I may run this again (in a year or two!).  This
is
  > the second time in three years that I have been able to do this.
  >
  > If you do not receive your order by the end of April, please contact
  > me.  We will be taking orders for the 30L-1 transformer in the next
week
  > or so, so stay tuned.
  >
  > Thank you and 73,
  >
  > Bill, K3PGB
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Date: Thu, 25 Mar 2004 09:24:28 -0500
From: "Charlie" 

Subject: {Collins} Re: 75A-2 Mods


Hi Bob.

The 6BA7 "mod" was probably the result of a production change.  Early 'A2's
used the 6BE6 mixers and later ones  had 6BA7's,  as did the 75A-3 & 4.

The 6AU8 however, is obviously not stock and my guess is that it's a product
detector.  Too bad the owner went to so much trouble because there's a very
simple no-holes mod  to convert the 6BA6 BFO to a 6BE6 self-exciteed Product
Detector using a pentagrid converter circuit.   I can send you the article
which goes into more detail.

73' Charlie k3ICH

 ----- Original Message ----- 
From: "Bob W6JCW" 
To: 
Sent: Thursday, 25 March 2004 12:16 AM
Subject: {Collins} 75A-2 Mods


> I recently picked up a 75A-2 (SN:1420) and have
> discovered a couple mods.
>
> 1.  1st and 2nd mixers have been changed from 6BE6's
> to 6BA7's.  The manual I have shows 6BA7 mixers, but
> the rcvr chassis is stamped for 6BE6's and the tube
> sockets have been changed.  Is this a common mod ??
>
> 2. There is a new tube added just in front of the FM
> adapter socket..a 6AU8..power is from the socket, but
> several wires run out into the receiver, and there's
> an additional toggle switch added to the receiver.
> Anyone
> have any idea whwt this mod might be, and what it
> does??
>
> I haven't powered the rcvr up yet as it's been a
> loooooong time since it was last used and I'm changing
> electrolytics..hope to get it fired up next week
> sometime, but before I do would like some info on the
> above mods if anyone has any info..
>
> Thanks   Bob  W6JCW
> Sponsored by the Collins Collectors Association
http://www.collinsradio.org
> Nets: Tues: 3.805 Mc-2000 Central / Thur: 3.875 Mc-2000 Central
> Fri: 3.895 Mc-2000 Pacific / Sun: 14.263 Mc-2000 UTC
> 1st Wed (of the month) AM Net 3.880 Mc-2000 local (ET, CT, MT, PT)
> Sun AM Net: 29.050 Mc-1200 Central
>

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Date: Thu, 25 Mar 2004 08:45:04 -0800
From: "David Harmon" 

Subject: {Collins} Re: 75A-2 Mods


Bob...I installed Charlie's mod to my A2 and A3 and it just makes all
the difference in the world. It is a very worthwhile, reversible, no
holes mod that you will never regret.

Regards

Dave Harmon
NSRCA 586
K6XYZ[at]comcast[dot]net
Torrance, Ca.

-----Original Message-----
From: collins-bounce@mailman.listserve.com
[mailto:collins-bounce@mailman.listserve.com] On Behalf Of Charlie
Sent: Thursday, March 25, 2004 6:24 AM
To: COLLINS@LISTSERVE.COM
Subject: {Collins} Re: 75A-2 Mods

Hi Bob.

The 6BA7 "mod" was probably the result of a production change.  Early
'A2's
used the 6BE6 mixers and later ones  had 6BA7's,  as did the 75A-3 & 4.

The 6AU8 however, is obviously not stock and my guess is that it's a
product
detector.  Too bad the owner went to so much trouble because there's a
very
simple no-holes mod  to convert the 6BA6 BFO to a 6BE6 self-exciteed
Product
Detector using a pentagrid converter circuit.   I can send you the
article
which goes into more detail.

73' Charlie k3ICH

 ----- Original Message ----- 
From: "Bob W6JCW" 
To: 
Sent: Thursday, 25 March 2004 12:16 AM
Subject: {Collins} 75A-2 Mods


> I recently picked up a 75A-2 (SN:1420) and have
> discovered a couple mods.
>
> 1.  1st and 2nd mixers have been changed from 6BE6's
> to 6BA7's.  The manual I have shows 6BA7 mixers, but
> the rcvr chassis is stamped for 6BE6's and the tube
> sockets have been changed.  Is this a common mod ??
>
> 2. There is a new tube added just in front of the FM
> adapter socket..a 6AU8..power is from the socket, but
> several wires run out into the receiver, and there's
> an additional toggle switch added to the receiver.
> Anyone
> have any idea whwt this mod might be, and what it
> does??
>
> I haven't powered the rcvr up yet as it's been a
> loooooong time since it was last used and I'm changing
> electrolytics..hope to get it fired up next week
> sometime, but before I do would like some info on the
> above mods if anyone has any info..
>
> Thanks   Bob  W6JCW
> Sponsored by the Collins Collectors Association
http://www.collinsradio.org
> Nets: Tues: 3.805 Mc-2000 Central / Thur: 3.875 Mc-2000 Central
> Fri: 3.895 Mc-2000 Pacific / Sun: 14.263 Mc-2000 UTC
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> Sun AM Net: 29.050 Mc-1200 Central
>

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Date: Thu, 25 Mar 2004 12:14:23 -0500 (Eastern Standard Time)
From: "carl" 

Subject: {Collins} Screen Saver "Boatanchors & Friends" for Collins S-Line


Afternoon all,

All "freebee" Screen Savers have been mailed out to those who sent in
pictures that were used in the program. A very very few pictures sent in
were not used due to quality of the picture.
Had a few A-Line station pictures sent in which weren't used. A-Line Screen
Saver may be down the road someday. Yes we're already having request for
such..
So far we've mailed out over 110 Screen Saver programs to date.
For those wanting the "Boatanchor & Friends" Screen Saver for S-Line
Stations which is about 100 pictures & 25 minutes long ( 6.8mg in size) they
are available by going to my website at : www.k4zrd.com & clicking on Screen
Saver to order.
Again thanks to all who sent in their "outstanding" station pictures.
73s
Carl k4zrd..
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Date: Thu, 25 Mar 2004 11:13:14 -0800
From: "Ben Davis" 

Subject: {Collins} Product dector for 51J-4


Good morning

Does any one out there have the information about the mod for a =
productor dector in the 51J-4?

Ben W6TCD
bfdavis@davisvill.org
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Date: Thu, 25 Mar 2004 12:25:30 -0800
From: "GEORGE MORTON" 

Subject: {Collins} Re: Product dector for 51J-4


Ben, et al; Ron Hankins of 555 Seminole Woods Blvd.
Geneva, FL 32732 makes a nifty product detector
for the 51J4 500KHz IF as well as a model for 455KHz IFs for about $125.00.
Don't have email address or phone number, but do have a unit, and it works
just finestkind!!!  Brgds, Geo
----- Original Message ----- 
From: "Ben Davis" 
To: "Collins List (E-mail)" 
Sent: Thursday, March 25, 2004 11:13 AM
Subject: {Collins} Product dector for 51J-4


> Good morning
>
> Does any one out there have the information about the mod for a =
> productor dector in the 51J-4?
>
> Ben W6TCD
> bfdavis@davisvill.org
> Sponsored by the Collins Collectors Association
http://www.collinsradio.org
> Nets: Tues: 3.805 Mc-2000 Central / Thur: 3.875 Mc-2000 Central
> Fri: 3.895 Mc-2000 Pacific / Sun: 14.263 Mc-2000 UTC
> 1st Wed (of the month) AM Net 3.880 Mc-2000 local (ET, CT, MT, PT)
> Sun AM Net: 29.050 Mc-1200 Central
>

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Date: Thu, 25 Mar 2004 12:41:49 -0800
From: "Rolynn PRECHTL  K7DFW" 

Subject: {Collins} Re: Product dector for 51J-4


Vintage Radio Products
555 Seminole Woods Blvd.
Geneva, FL 32732
Ron Hankins - KK4PK
Phone: 407-349-9150

PD-1 R390(A) and 51J-series Product Detector



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Date: Thu, 25 Mar 2004 15:12:05 -0600
From: 

Subject: {Collins} Need 75A-1 kc round dials


I need two of these for restoration projects.  Does anyone sell
reproductions?

thanks & 73,
Phil
W5BVB

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Date: Thu, 25 Mar 2004 16:27:20 -0500
From: Roy Morgan 

Subject: {Collins} Re: Need 75A-1 kc round dials


At 03:12 PM 3/25/2004 -0600,  wrote:
>I need two of these for restoration projects.  Does anyone sell
>reproductions?

Yes. Howard Mills does:

"Howard Mills W3HM" 

Roy


- Roy Morgan, K1LKY since 1959 - Keep 'em Glowing!
7130 Panorama Drive, Derwood MD 20855
Home: 301-330-8828 Work: Voice: 301-975-3254,  Fax: 301-948-6213
roy.morgan@nist.gov --

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Date: Thu, 25 Mar 2004 18:41:34 EST
From: Parnaudl@aol.com

Subject: {Collins} Rare 1936 Collins 32G  Transmitter for sale


Hi to all...
For sale, a rare Collins 32G transmitter, needs restoration, untested and 
complete, I can found only one picture  all over the  Internet ( an Ad. in  CCA 
), please make me an offer,
I can send some pictures as request

Best regards to all

XE1YZY / Pedro in Mexico City


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Date: Thu, 25 Mar 2004 19:57:23 -0500
From: "Charlie" 

Subject: {Collins} Re: Product dector for 51J-4


Hello Ben.

Give me your mailing address and I will send you a copy of the same article
on various product detector mods.

73' Charlie k3ICH


----- Original Message ----- 
From: "Ben Davis" 
To: "Collins List (E-mail)" 
Sent: Thursday, 25 March 2004 2:13 PM
Subject: {Collins} Product dector for 51J-4


> Good morning
>
> Does any one out there have the information about the mod for a =
> productor dector in the 51J-4?
>
> Ben W6TCD
> bfdavis@davisvill.org
> Sponsored by the Collins Collectors Association
http://www.collinsradio.org
> Nets: Tues: 3.805 Mc-2000 Central / Thur: 3.875 Mc-2000 Central
> Fri: 3.895 Mc-2000 Pacific / Sun: 14.263 Mc-2000 UTC
> 1st Wed (of the month) AM Net 3.880 Mc-2000 local (ET, CT, MT, PT)
> Sun AM Net: 29.050 Mc-1200 Central
>

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Date: Thu, 25 Mar 2004 22:15:39 -0300
From: "Ivan Silva" 

Subject: {Collins} 32RS1


Dear collectors
I have a very nice and rare Collins equipment.
The  32RS-1 in very nice conditions.
I get lot of  photos, internal view, back view, front view etc...
All tubes are new. No scratches, no dent, no bent.
20 meters collins net frequency already installed.

Asking $3,000

Ivan /PY1YB

 

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Date: Thu, 25 Mar 2004 20:41:54 -0800
From: William J Noonan 

Subject: {Collins} Pinout for 115NO3


Anyone out there aware of the pin out for the 115NO3 used in the 30S-1?

Bill,W6WJN
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Date: Thu, 25 Mar 2004 23:52:19 -0600
From: "Gregory L. Hering" 

Subject: {Collins} Re: 75A-4 restoration project, mentor?


Hi Ron & Foster,

The SN is 119.
I believe the date of manufacture is 1955.

I have not checked the tubes yet.

Pictures are here:
http://www.heringfamily.com/ThisOldRadio/

I'm going to record this process and document in on this site for all to
see.  It's a bit of a jumble but I've only had it online for two days.

I just found out we have a variac at work.
Is 'reforming' capacitors necessary?  I.e., will I be leaving any caps in
that would benefit from 'reforming'?  How low / slow do you go?

Is a VTVM necessary or would any meter work for testing?

73,

Greg
KE4HBQ



----- Original Message ----- 
From: Greg.Hering@bench.com
To: glhering@knology.net
Sent: Thursday, March 25, 2004 5:42 PM
Subject: FW: {Collins} 75A-4 restoration project, mentor?




-----Original Message-----
From: TVComlGuy@aol.com [mailto:TVComlGuy@aol.com]
Sent: Thursday, March 25, 2004 4:13 PM
To: Hering, Greg
Subject: Re: {Collins} 75A-4 restoration project, mentor?

Hi Greg,

I live in Las Vegas, I thought if you lived close to me it would be easier.
I would be happy to help in any way I can.  I have restored quite a few of
these receivers.  Could you tell me the seial number and also send pictures
of the top and bottom of the chassis?  Also check the tube lineup and see if
the tubes are the same ones printed on the chassis.  Sometimes modifications
were done that included putting different tubes in the receiver to help
increase gain among other things.

It sounds like the first thing you need to do is replace the filter
capacitors and the "black beauty" paper capacitors.  There are also some
silver mica caps that should be replaced.

73,s

Ron, KB0WAR


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Date: Fri, 26 Mar 2004 07:22:33 -0500
From: Howard Sherer 

Subject: {Collins} FS 136B-2 Noise Blanker


 I have for sale a 136B-2 NB for the KWM-2 / 2A in very good condition. 
It includes the module S/N 441 and a copy of the manual.
$200. OBO Howard AE3T

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Date: Fri, 26 Mar 2004 06:50:46 -0600
From: fazieman@mmm.com

Subject: {Collins} New to Collecting


Hi, I am new to this and need lots of help. I have a  KWM 2 with Waters 
Rejection, Collins factory installed. Can anyone tell me more?
Tnx,

73 Fran


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Date: Fri, 26 Mar 2004 08:18:30 -0500
From: k2qde@optonline.net

Subject: {Collins} Re: Pinout for 115NO3


Yes. See: www.amperite.com/gseries.htm. Diagram D. That should be 115NO180, a 3 minute delay. 
Stu, k2qde

----- Original Message -----
From: William J Noonan 
Date: Thursday, March 25, 2004 11:41 pm
Subject: {Collins} Pinout for 115NO3

> Anyone out there aware of the pin out for the 115NO3 used in the 
> 30S-1?
> 
> Bill,W6WJN
> Sponsored by the Collins Collectors Association 
> http://www.collinsradio.orgNets: Tues: 3.805 Mc-2000 Central / 
> Thur: 3.875 Mc-2000 Central
> Fri: 3.895 Mc-2000 Pacific / Sun: 14.263 Mc-2000 UTC
> 1st Wed (of the month) AM Net 3.880 Mc-2000 local (ET, CT, MT, PT)
> Sun AM Net: 29.050 Mc-1200 Central
> 
> 

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Date: Fri, 26 Mar 2004 08:19:10 -0500
From: "Frederick W. Holmes, W1SKU" 

Subject: {Collins} CCA Special Event Station


Just a reminder that the CCA is having a Special Event station on theair
this Saturday, March 27, from the Hammond Museum of Radio in Guelph,
Ontario, Canada. We will be on 14.263 mc and 7.263 mc  +/- QRM, from approx.
13:00 PM to 15:00 PM EST. Some of the operators will be, Floyd, W8RO; Fred,
W1SKU; Scott, WN1B and Rich, K8PJQ.  We believe we will be using the
museum's call of VE3HC. If not, we will be using one of our own calls
/VE3.We will be sending out certificates for the event. Please QSL to W1SKU
at QRZ.COM address. Please include an SASE with your QSL card.If you do not
want the certificate folded, please send an 8 1/2 X 11 envelope with
postage.

73 de Fred, W1SKU
Net Manager
CCA Member #793

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Date: Fri, 26 Mar 2004 08:32:27 -0500
From: "Charlie" 

Subject: {Collins} : Product dector for 51J-4


The article is titled:  " Oh NO, Not another product detector article!" and
appeared in theJULY 1997 issue of Electric Radio.  it's not a "Heathkit"
style article, but discusses various circuits and approaches to adding a
product detector to several classic radios such as the SP-600, 51J, and
75A-2 & 3.

I can send a copy, but I'll need your mailing address.

73' Charlie k3ICH


----- Original Message ----- 
From: "Harold Hairston" 
To: 
Sent: Friday, 26 March 2004 7:13 AM
Subject: Re: {Collins} Re: Product dector for 51J-4


> Hi, Charlie;
>
> Is that something that you can e-mail? If so, I would appreciate a copy
> also. If it needs to be go via USPS, I will forward a suitable SASE.
>
> Harold
> ----- Original Message ----- 
> From: "Charlie" 
> To: 
> Sent: Thursday, March 25, 2004 7:57 PM
> Subject: {Collins} Re: Product dector for 51J-4
>
>
> > Hello Ben.
> >
> > Give me your mailing address and I will send you a copy of the same
> article
> > on various product detector mods.
> >
> > 73' Charlie k3ICH
> >
>
>

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Date: Fri, 26 Mar 2004 09:25:36 -0500
From: Floyd Soo 

Subject: {Collins} Re: New to Collecting


fazieman@mmm.com wrote:

> Hi, I am new to this and need lots of help. I have a  KWM 2 with Waters 
> Rejection, Collins factory installed. Can anyone tell me more?
> Tnx,
> 
> 73 Fran

Fran,

Welcome to the world of Collins Radios!  Before we start this same 
thread on the CCA List again, please go through the List Archives and do 
a search on the KWM-2.  There is a TON of info in the List Archives 
about this rig!  After you have read through those messages, if you 
still have specific questions, then pose them to the List.  This way we 
conserve bandwidth AND server space for the List Archives.

Thanks to all for your cooperation!
-- 
73,
Floyd Soo, W8RO
President, HI-RES Communications, Inc.
President, Collins Collectors Association (member #2)
floyd@hi-rescom.com
http://www.hi-rescom.com


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Date: Fri, 26 Mar 2004 10:34:49 -0600
From: "Marvin Gorden" 

Subject: {Collins} Wanted to Buy 136C-1 ( 75A-4) Noise Blanker


If you have, or know of, a 136C-1 blanker for sale, please e-mail to me at:
kc9vf@arrl.net     or

Phone 1-580-243-6636.

Also, I am looking for any 20V3 meter to fill the vacant RF ammeter hole in my 20V3.  The meter need not me working.

73,

Marvin Gorden
KC9VF
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Date: Fri, 26 Mar 2004 11:50:52 -0500
From: "Harold Hairston" 

Subject: {Collins} 30L-1 Electrolytic Capacitors


I had a problem this week with the Diode Board in my 30L-1. Fortunately, I had one of K1ROD's Diode Boards on hand. Before buttoning-up the 30L-1, I want to replace the 450 VDC, 100 Mf capacitors on the filter board. I see that Mouser has them for $11.95 but they are not the original size.  
Am I stuck with those or is there someone who has a better source.

Thanks,

Harold
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Date: Fri, 26 Mar 2004 11:49:11 -0500
From: "Karney R Nazarian" 

Subject: {Collins} 75S3-B tuning slugs


Hi I am looking for three slugs for my 75S3B, COLLINS PART # 526-5007-001, If anyone has all three or just one please contact me and let me know how much you want for them.   I  appreciate you taking the time to look..............Thanks   Karney W2AFC  lrelec@metrocast.net 
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Date: Fri, 26 Mar 2004 08:18:18 -0600
From: "WB7DYW Dutch" 

Subject: {Collins} FS Hickok 800A tube tester.


Gang,
I have a Hickok 800A tube tester for sale, only used to test tubes in my
Collins gear. Works fine cabinet a little rough $250 + shipping.


Thanks & 73's Dutch
Please visit my Collins web site.
http://users2.ev1.net/~wb7dyw/


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Date: Fri, 26 Mar 2004 10:23:23 -0800
From: William J Noonan 

Subject: {Collins} 115NO3


Many thanks to all who responded with the pin out for the 115NO3 and to
those who pointed out that the correct # for the 30S-1 should be
115NO180.

&3

Bill,W6WJN
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Date: Fri, 26 Mar 2004 14:50:43 -0500
From: "ROBERT FERREIRA" 

Subject: {Collins} repair


IM LOOKING FOR SOMEONE THAT DOES IT ALL ON COLLINS RADIOS,FULL RESTORATION,I HAVE SOME S-LINE
THAT NEED SOME ALINEMENT AND MAYBE SOME REPAIR NOTHING MAJOR.BUT ALSO WANT CABINET AND FACE TO GET WHAT IT NEEDS.DOES ANYONE KNOW WHO IS THE BEST AND CAN DO THIS.THANKS BOB KA1DMZ
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Date: Fri, 26 Mar 2004 16:05:08 -0500
From: "ROBERT FERREIRA" 

Subject: {Collins} REPAIR


I AM LOOKING FOR SOMEONE THAT DOES IT ALL ON COLLINS RADIOS,FULL RESTORATION.I HAVE SOME S-LINE THAT NEED SOME ALINEMENT AND MAYBE SOME REPAIR,NOTHING MAJOR.BUT ALSO WANT CABINET AND FACE TO GET WHAT IT NEEDS DOES ANYONE KNOW WHO IS THE BEST AND CAN DO THIS. BOB KA1DMZ
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Date: Fri, 26 Mar 2004 17:12:31 -0500
From: john 

Subject: {Collins} Grill re-flocking?




Picked up a nice 270G-3 at a swap today...any recommendations
on getting the grille re-flocked?

Thanks!
John 


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Date: Fri, 26 Mar 2004 17:48:47 -0500
From: "Harold Hairston" 

Subject: {Collins} Capacitors FOR 30L-1


Many thanks for the several of you who responded so quickly. I found an individual who has six new Mallorys.
Several of you asked that I forward the info that I received from the Reflector. I will summarize it and put it here.

Again, thanks to all of you who were so helpful.

Harold
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Date: Fri, 26 Mar 2004 17:58:32 -0500
From: John Dilks - K2TQN 

Subject: {Collins} Collins FS at Timonium, MD Hamfest Saturday



Collins FS at Timonium, MD Hamfest Friday night (late) and Saturday morning

I'm leaving now for the Timonium, MD Hamfest.  I have the following Collins 
For Sale
    (Please don't email me and ask me to ship. It's for the hamfest only.)

Collins 32V3 ------  $750.  From an Estate, selling as-is
Collins 75A2-A ---- $500.  From an Estate, selling as-is

KWM-2 Collins Station ----- $1100. (package deal)
      from a Senior Citizen going QRT, selling as-is
Includes:
     Collins KWM-2 with Waters with original manual  ---- after 10 AM $900 **
     Collins 516-F2 power supply with cabinet  ------------- goes with KWM-2 **
     Collins 312-B4 station control with original manual -- after 10 AM $350
     Original RF cables ---- goes with KWM-2 ** (either deal)

Look for my Red Chevy Lumina station-wagon with the tail gate up.

73, John Dilks, K2TQN  

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Date: Fri, 26 Mar 2004 17:18:49 -0600
From: "K1KQ" 

Subject: {Collins} KWM-2A Snap Crackle Pop!


OK! VURD (vastly underpaid research department). I need a little advice.
My Collins KWM-2A has developed a snap, crackle & pop in the audio. You can hear it with the volume control fully counter clockwise and the R.F. Gain fully clockwise. The radio is useable by decreasing the R.F. Gain to the threshold of the pops, rendering weak signals unlistenable. The pops are further affected or aggravated by the modulation of strong signals with those stations audio distorted and splattering even with the volume turned down.

That's my novice explanation, now the history.

The problem first occurred when I turned the radio on after being off for one weekend when I was gone, (I rarely turn the radio off... I just let her glow). When I returned on Monday and turned it on it had the popping problem. After 24 hours of running, certainly very warmed up, the popping quit. So I let it be and then a few weeks later, I had to turn it off since I was going out of town for a week. Well, the popping has returned when I returned and fired it up. This time it will not go away and the weekend is here.

I was going to check all tubes and then go from there. Any suggestions and guidance appreciated. If you feel like picking the phone up and calling me, feel free to do so on my toll free number. Emails can get lengthy... duplex conversation works too.

73

Roger Agnew - K1KQ - Austin, TX - 888-536-5500

K1KQ Web Site - www.K1KQ.com
Bio & Picture QRZ - http://qrz.com/callsign.html?callsign=k1kq

My Work - www.MotorHomesUSA.com
My MotorHome Journeys - www.MotorHomesUSA.org



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Date: Fri, 26 Mar 2004 15:43:08 -0800 (PST)
From: Glen Zook 

Subject: {Collins} Re: 30L-1 Electrolytic Capacitors


Actually, Mouser has 450 volt 100 mfd capacitors for
$3.58 each in single quantities (part number
140-XRL450V100.  I have used these in all sorts of
power supplies including those made by Heath, Collins,
Hallicrafters, etc.  They work just as well as the
$11.95 versions!

These are +/- 20% and not +/- 10%.  However,
considering that the original electrolytics that the
manufacturers used were usually -50% / +80% in
tolerance, the newer capacitors are MUCH more
accurate.  

Also, the newer capacitors are about 20% of the size
of the original capacitors.  This is due to much
better materials being used these days.

Glen, K9STH


--- Harold Hairston  wrote:

Before buttoning-up the 30L-1, I want to replace the
450 VDC, 100 Mf capacitors on the filter board. I see
that Mouser has them for $11.95 but they are not the
original size.

=====
Glen, K9STH

Web sites

http://home.comcast.net/~k9sth
http://home.comcast.net/~zcomco

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Date: Fri, 26 Mar 2004 18:52:30 EST
From: K5lxz@wmconnect.com

Subject: {Collins} 30L1 diode board for sale


I purchased a diode board from k1rod only to discover that I did not need it.
If anyone needs it I am asking $60 and I will pay shipping to lower 48.
Thanks,
Ray W5EW

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Date: Fri, 26 Mar 2004 15:55:47 -0800 (PST)
From: Glen Zook 

Subject: {Collins} Re: KWM-2A Snap Crackle Pop!


Try loosening and then retightening every screw,
machine screw, nut, etc., that goes through the
chassis.  Every ground in the set is made through some
sort of fastener to the chassis (i.e. terminal strips,
rings around tube sockets, shields, etc.).  Over the
years these either work their way loose or else build
up corrosion.  By loosening them and then retightening
them you get the grounds back where they belong.

Doing this fixes about 90% of the intermittents,
popping, etc., in the boat anchor equipment that I
service for others.

Of course there can be other problems including the
pins on the tube sockets coming loose or the building
up of corrosion on the tube pins themselves (try
unplugging and then plugging in the tube again).  The
sockets themselves can be "tightened up" by taking a
probe and inserting between the outside of the
connector and the insulating material of the tube
socket.

Then, there can be things like bad components
including a tube, resistor, capacitor, etc.  However,
by doing the things that I listed first you definitely
are not going to hurt anything and probably will help
with other possible problems even if you don't
eliminate your original problem.

Glen, K9STH


--- K1KQ  wrote:

My Collins KWM-2A has developed a snap, crackle & pop
in the audio. You can hear it with the volume control
fully counter clockwise and the R.F. Gain fully
clockwise. The radio is useable by decreasing the R.F.
Gain to the threshold of the pops, rendering weak
signals unlistenable. The pops are further affected or
aggravated by the modulation of strong signals with
those stations audio distorted and splattering even
with the volume turned down.


=====
Glen, K9STH

Web sites

http://home.comcast.net/~k9sth
http://home.comcast.net/~zcomco

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Date: Fri, 26 Mar 2004 18:19:22 -0600
From: "Herschel McCullough" 

Subject: {Collins} Re: KWM-2A Snap Crackle Pop!


well your luck has turned, I think it is a tube and would offer that as a
starting point, but if you really want to get it going good, call the
BUDster , he is here in Wimberley, you know, we are the small town [ 20
miles ] out in the stix SW of Austin, he can hook you right up..  512-
847-3325  good luck   mac/mc


----- Original Message -----
From: "K1KQ" 
To: 
Sent: Friday, March 26, 2004 5:18 PM
Subject: {Collins} KWM-2A Snap Crackle Pop!


> OK! VURD (vastly underpaid research department). I need a little advice.
> My Collins KWM-2A has developed a snap, crackle & pop in the audio. You
can hear it with the volume control fully counter clockwise and the R.F.
Gain fully clockwise. The radio is useable by decreasing the R.F. Gain to
the threshold of the pops, rendering weak signals unlistenable. The pops are
further affected or aggravated by the modulation of strong signals with
those stations audio distorted and splattering even with the volume turned
down.
>
> That's my novice explanation, now the history.
>
> The problem first occurred when I turned the radio on after being off for
one weekend when I was gone, (I rarely turn the radio off... I just let her
glow). When I returned on Monday and turned it on it had the popping
problem. After 24 hours of running, certainly very warmed up, the popping
quit. So I let it be and then a few weeks later, I had to turn it off since
I was going out of town for a week. Well, the popping has returned when I
returned and fired it up. This time it will not go away and the weekend is
here.
>
> I was going to check all tubes and then go from there. Any suggestions and
guidance appreciated. If you feel like picking the phone up and calling me,
feel free to do so on my toll free number. Emails can get lengthy... duplex
conversation works too.
>
> 73
>
> Roger Agnew - K1KQ - Austin, TX - 888-536-5500
>
> K1KQ Web Site - www.K1KQ.com
> Bio & Picture QRZ - http://qrz.com/callsign.html?callsign=k1kq
>
> My Work - www.MotorHomesUSA.com
> My MotorHome Journeys - www.MotorHomesUSA.org
>
>
>
> Sponsored by the Collins Collectors Association
http://www.collinsradio.org
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> Sun AM Net: 29.050 Mc-1200 Central
>


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Date: Fri, 26 Mar 2004 19:40:38 -0600
From: Bob Peters 

Subject: {Collins} F/S EV-664 With EV Connector


I have above  F/S  for  $125.00  plus shipping  from Dallas Area.I  would rate
it a CCA Very Good.  No pitting ...No  deep scratches...one small scuff mark...
Would  probably  clean  up to an Excellent.Have  pixs available...
Best 73's  Bob W1PE
Mesquite, TX 75149 

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Date: Fri, 26 Mar 2004 18:58:17 -0800
From: "Clair Truax" 

Subject: {Collins} 516F-2 Power Supply w/solid state tube replacements


In my power supply for my 32S-1 I replaced the tubes with the solid state
"equivalents" available at Surplus Sales of Neb.  (1N1239)  I find that I
cannot adjust the bias down to 40 or 50 ma  as it is supposed to run.  With
the adjust pot on the power supply turned all the way down it is still up
around 90 ma.  I assume that it is not good to run it at this level.
Somewhere I read that some people put resisters somewhere in the circuit to
bring the B+ voltage down with the solid states in place.  Is this the
reason that the bias can not be adjusted down?  Anyone with experience with
this please let me know what was done to bring it in line.  Some people I've
asked about it on the air have told me that it's "close enough" and many
people run it that way for years with no bad effect.  I'm not so sure!


CUL, Clair                Borrego Springs, California 92004
---------------------------------------------------------------
email:     cetruax@truax.cc
www:















-------------------------------------------------------------------------


----------------------------------------------------------------------------
----


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Date: Fri, 26 Mar 2004 19:42:59 -0600
From: Bob Peters 

Subject: {Collins} K1ROD Boards


Have a 30L1  board  for...$50.00  shipped and a PM-2  for  $40.00  Shipped...
These are NOS...
Best 73's  Bob W1PE
Mesquite, TX 75149 

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Date: Sat, 27 Mar 2004 00:42:03 -0800
From: "Ben Davis" 

Subject: {Collins} Re: 30L-1 Electrolytic Capacitors


I would check into that part number because the XRL means that both =
leads come out of the same end.  if you want the leads comming out of =
each end then use XAL in place of XRL.

Ben

-----Original Message-----
From: Glen Zook [mailto:gzook@yahoo.com]
Sent: Friday, March 26, 2004 3:43 PM
To: k4hca@alltel.net; Collins ListServ
Subject: {Collins} Re: 30L-1 Electrolytic Capacitors


Actually, Mouser has 450 volt 100 mfd capacitors for
$3.58 each in single quantities (part number
140-XRL450V100.  I have used these in all sorts of
power supplies including those made by Heath, Collins,
Hallicrafters, etc.  They work just as well as the
$11.95 versions!

These are +/- 20% and not +/- 10%.  However,
considering that the original electrolytics that the
manufacturers used were usually -50% / +80% in
tolerance, the newer capacitors are MUCH more
accurate. =20

Also, the newer capacitors are about 20% of the size
of the original capacitors.  This is due to much
better materials being used these days.

Glen, K9STH


--- Harold Hairston  wrote:

Before buttoning-up the 30L-1, I want to replace the
450 VDC, 100 Mf capacitors on the filter board. I see
that Mouser has them for $11.95 but they are not the
original size.

=3D=3D=3D=3D=3D
Glen, K9STH

Web sites

http://home.comcast.net/~k9sth
http://home.comcast.net/~zcomco

__________________________________
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Date: Sat, 27 Mar 2004 06:48:46 -0700
From: Dave Hollander 

Subject: {Collins} FS: EV Model 623 Microphone - New in the Box


I have a new in the box, Electrovoice Model 623 microphone. This is a
Hi-Z dynamic mike with instructions and cable. I will ship overseas

$225 shipped in the USA.  Canada and overseas a little higher due to
shipping

Pictures
http://members.cox.net/radiostuff9/ev623_mike2.jpg
http://members.cox.net/radiostuff9/ev623_mike.jpg
http://members.cox.net/radiostuff9/ev623_mike3.jpg
http://members.cox.net/radiostuff9/ev623_mike4.jpg

Thanks for looking

--
***********************************************************
Dave  N7RK          Boatanchors Home Page: http://members.cox.net/n7rk
Phoenix, Arizona         *DXCC Honor Roll*    *WAZ#22 - 75 Meter SSB*

ex-XE2/N7RK, N7RK/ZB2, VK2ERK, ZM0AJN, WB6NRK, WN6IWX

Boatanchor and Antique Radio Collector


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Date: Sat, 27 Mar 2004 08:24:34 -0500
From: "James C. Garland" <4cx250b@muohio.edu>

Subject: {Collins} Re: 516F-2 Power Supply w/solid state tube


Hi Clair,
I wouldn't advise running your 32S-1 with 90 mA resting current. The 
resting current is high because the screen and plate voltage on the 6146 
tubes is higher as a result of using solid state replacements in the 516F-2.

If you really want to keep the solid state rectifiers, You'll need to make 
a slight modification in the 516F-2  bias circuit to increase the bias 
voltage range. I'd start by replacing the potted bias rectifier module with 
a Si diode (e.g., 1N4007). Sometimes, if the rectifier module is too 
resistive, this change will solve the problem. It's a good idea to make 
this change in any case, because the potted module is prone to failure.

If this doesn't fix the problem,  you'll have to change the two watt 
resistors that act as a voltage divider in the bias circuit. These are in 
series with the adjustment pot. I vaguely recall they are 270 or 330 ohms, 
though I could be mistaken. Call the resistor that is between the pot and 
the rectifier R1, and the other resistor R2. As wired, R1 is connected to 
the pot, which is connected to R2, which is tied to ground. You should 
reduce R1 by about 25 percent (sorry, don't have my circuit diagram handy, 
so I don't recall the exact value.)   Then increase R2 by the same amount. 
so that the total load on the bias circuit isn't changed. This modification 
will allow you to adjust the bias voltage to a higher amount.

Actually, I don't recommend solid-stating the 516F-2 (even though many 
people do it), because the resulting voltages are higher than desirable.. 
The 516F-2 voltages are high to begin with, and you'll take the plate 
voltage over 1000V when you eliminate the rectifier tubes. Although you can 
put resistors in series with the high voltage to try an reduce it,  this 
isn't a satisfatory solution.

73,

Jim Garland W8ZR

At 09:58 PM 3/26/2004, you wrote:
>In my power supply for my 32S-1 I replaced the tubes with the solid state
>"equivalents" available at Surplus Sales of Neb.  (1N1239)  I find that I
>cannot adjust the bias down to 40 or 50 ma  as it is supposed to run.

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Date: Sat, 27 Mar 2004 11:36:02 EST
From: RLucch2098@aol.com

Subject: {Collins} FS: Really Clean HEATHKIT HP-23A POWER SUPPLY with PICS!


Hi All;
I have a really Nice HP-23A supply. There was never a cover installed as it 
sat for years in an SB-600 speaker.
I brought bit up on a variac and the No Load voltages are:
6v fil = 6.95vac
12v fil = 13.95vac
+LV = 265vdc on 250 vdc tap & 349vdc on the 350vdc tap
+HV = 787vdc
-130v = -127.3v
Bias at -77vdc.
There are no paint chips to speak of & All lettering intact, all looks 
original underneight with NO repairs!
PRICE is $80 + UPS.
Pics:
http://www.myradioroom.com/hp23asupply1.jpg
http://www.myradioroom.com/hp23asupply2.jpg
http://www.myradioroom.com/hp23asupply3.jpg
http://www.myradioroom.com/hp23asupply4.jpg
Thanks & 73..
Rich WA2RQY

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Date: Sat, 27 Mar 2004 18:20:13 +0100
From: IK3GLF 

Subject: {Collins} HP410C HF VTVM


Hello everybody,
I have, FOR SALE, an Hewlett Packard HP410C HF VTVM.

General good condition both, physical as well as electrical. Meter' glass in
perfect condition, panel markings does not show any sign of use.

Non smoking environment.

Comes with all test cables and  includes the HP11036A AC probe, also in good
condition.

Located in Italy.

EU 140.00 plus shipping.

IK3GLF
Nicola

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Date: Mon, 27 Aug 2001 03:50:09 +0000
From: "William Gower" 

Subject: {Collins} Xcelite Bristol tools


For Sale full set Xcellite series 60 Bristol multispline, for use on 
Collins.
$20.00 pluse shipping.

_________________________________________________________________
FREE pop-up blocking with the new MSN Toolbar – get it now! 
http://clk.atdmt.com/AVE/go/onm00200415ave/direct/01/

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Date: Sat, 27 Mar 2004 08:30:54 -0800
From: redmondj 

Subject: {Collins} Re: 516F-2 Power Supply w/solid state tube replacements


Hello Clair and the Collins group.

At 90 ma, that is 45 ma per tube assuming they are balanced which at 800 
volts is 36 watts of plate dissipation.  That is over the rating of 6146 
dissipation so I would say it is a problem.  Lots of heat.  

Check the bias supply diode and caps in the 516F-2.

73, Alan - K6RFK

Clair Truax wrote:

>In my power supply for my 32S-1 I replaced the tubes with the solid state
>"equivalents" available at Surplus Sales of Neb.  (1N1239)  I find that I
>cannot adjust the bias down to 40 or 50 ma  as it is supposed to run.  With
>the adjust pot on the power supply turned all the way down it is still up
>around 90 ma.  I assume that it is not good to run it at this level.
>Somewhere I read that some people put resisters somewhere in the circuit to
>bring the B+ voltage down with the solid states in place.  Is this the
>reason that the bias can not be adjusted down?  Anyone with experience with
>this please let me know what was done to bring it in line.  Some people I've
>asked about it on the air have told me that it's "close enough" and many
>people run it that way for years with no bad effect.  I'm not so sure!
>
>
>CUL, Clair                Borrego Springs, California 92004
>---------------------------------------------------------------
>email:     cetruax@truax.cc
>www:
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>-------------------------------------------------------------------------
>
>
>----------------------------------------------------------------------------
>----
>
>
>Sponsored by the Collins Collectors Association http://www.collinsradio.org
>Nets: Tues: 3.805 Mc-2000 Central / Thur: 3.875 Mc-2000 Central
>Fri: 3.895 Mc-2000 Pacific / Sun: 14.263 Mc-2000 UTC
>1st Wed (of the month) AM Net 3.880 Mc-2000 local (ET, CT, MT, PT)
>Sun AM Net: 29.050 Mc-1200 Central
>
>
>
>


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Date: Sat, 27 Mar 2004 12:09:35 -0600
From: Ken Koval 

Subject: {Collins} FS: S-3 LINE STATION


I have for sale a 75S-3 WE with original manual, 32S-3 WE with original 
manual, and a PM-2 with a connecting cable for transmitter and a copy of 
manual.  All are in very good cosmetic and operating condition.  I will 
sell as a complete station or separately.  Asking:
75S-3  $550 plus shipping
32S-3  $500 plus shipping
PM-2   $200 plus shipping
Pictures  and details are available.

Ken,  K9PGC
NW FL

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Date: Sat, 27 Mar 2004 14:48:15 -0500
From: "David C. Hallam" 

Subject: {Collins} Re: 516F-2 Power Supply w/solid state tube replacements


Plate current in a tetrode is fairly independent of plate voltage, i.e.,
raising or lowering the plate voltage will have very little effect on plate
current.  Plate current is strongly dependent upon grid bias and screen
voltage.  Lowering the grid bias, i.e., making it less negative, or raising
the screen voltage will increase the plate current.  I would check the grid
bias voltage and screen voltage and see if there is any change.

David C. Hallam KC2JD

-----Original Message-----
From: collins-bounce@mailman.listserve.com
[mailto:collins-bounce@mailman.listserve.com]On Behalf Of redmondj
Sent: Saturday, March 27, 2004 11:31 AM
To: cetruax@cableusa.com
Cc: collins@listserve.com
Subject: {Collins} Re: 516F-2 Power Supply w/solid state tube replacements

Hello Clair and the Collins group.

At 90 ma, that is 45 ma per tube assuming they are balanced which at 800
volts is 36 watts of plate dissipation.  That is over the rating of 6146
dissipation so I would say it is a problem.  Lots of heat.

Check the bias supply diode and caps in the 516F-2.

73, Alan - K6RFK

Clair Truax wrote:

>In my power supply for my 32S-1 I replaced the tubes with the solid state
>"equivalents" available at Surplus Sales of Neb.  (1N1239)  I find that I
>cannot adjust the bias down to 40 or 50 ma  as it is supposed to run.  With
>the adjust pot on the power supply turned all the way down it is still up
>around 90 ma.  I assume that it is not good to run it at this level.
>Somewhere I read that some people put resisters somewhere in the circuit to
>bring the B+ voltage down with the solid states in place.  Is this the
>reason that the bias can not be adjusted down?  Anyone with experience with
>this please let me know what was done to bring it in line.  Some people
I've
>asked about it on the air have told me that it's "close enough" and many
>people run it that way for years with no bad effect.  I'm not so sure!
>
>
>CUL, Clair                Borrego Springs, California 92004
>---------------------------------------------------------------
>email:     cetruax@truax.cc
>www:
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>-------------------------------------------------------------------------
>
>
>---------------------------------------------------------------------------
-
>----
>
>
>Sponsored by the Collins Collectors Association http://www.collinsradio.org
>Nets: Tues: 3.805 Mc-2000 Central / Thur: 3.875 Mc-2000 Central
>Fri: 3.895 Mc-2000 Pacific / Sun: 14.263 Mc-2000 UTC
>1st Wed (of the month) AM Net 3.880 Mc-2000 local (ET, CT, MT, PT)
>Sun AM Net: 29.050 Mc-1200 Central
>
>
>
>


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Date: Sat, 27 Mar 2004 14:46:13 -0700
From: "RICHARD W GILLESPIE" 

Subject: {Collins} FS: WE KWM2


A really nice, working WE KWM2. Front panel in excellent condition. Cabinet 
in very good condition. Serial # 10436. Has been used to check in to the 
Collins nets. Really looks and works great. $750 plus shipping.

Dick
K5DIC

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Date: Sat, 27 Mar 2004 15:57:48 -0500
From: "Joel Richey" 

Subject: {Collins} 516F2 solid state modes


Do your self a favor and put the tubes back in, yeah solid state is more efficient but  it wasn't designed for them and 5U4'S and 5R4's are plentyful and your problem will be solved.  These mods cause more problems then they solve..
73's Joe W2DBO

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Date: Sat, 27 Mar 2004 14:38:37 -0700
From: "RICHARD W GILLESPIE" 

Subject: {Collins} FS: 75A4 restored by W3HM


A complete restoration by Howard approx. 18 months ago. Cabinet and face 
plate were totally re-done in addition to all the other stuff he does to the 
radio. No scracthes, no marks. 4 to 1 tuning, 6kc and 3.1 kc filters. Serial 
# 2347. A real beauty I thought I would never let leave the shack. $1575 
firm plus shipping.

Dick K5DIC

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Date: Sat, 27 Mar 2004 14:00:34 -0800
From: "Warren Pratt" 

Subject: {Collins} Fw: 32S-3 BFO Off Frequency


Thanks to all who responded to my post.  I received multiple emails from Collins owners who have similar problems and I wanted to let you know the solution (at least in my case).
A new pair of BFO crystals resolved the problem.  The BFO is now back on the appropriate frequencies for both LSB and USB.  I had originally thought it unlikely that both crystals would have moved in the same direction by the same amount.  Thanks to Jim, VK9NS, for pointing out that the crystals were likely from the same batch (materials, process, etc.) and would likely have similar tendencies to age.

I purchased the new crystals from INRAD.  They seem to have an excellent product and the service was great!

73's,

Warren, NR0V

----- Original Message ----- 
From: Warren Pratt 
To: collins@listserve.com 
Sent: Saturday, March 20, 2004 4:48 PM
Subject: 32S-3 BFO Off Frequency



I'm repairing a 32S-3 (MCN 2047) and find that the BFO measures about 200 Hz low in frequency in all modes (LSB, USB, Tune, etc.).  I've checked all resistances and voltages on the oscillator, V2B.  I've also been able to get good measurements on the capacitors in the BFO circuit.  All appears as it should be per the manual and schematic.  I have another 32S-3 of the same vintage (MCN 1999) with a BFO that's dead on frequency.  The voltage, resistance, and capacitance measurements of the two units are virtually identical.  I also switched tubes between the two units with no frequency change in either unit.

This is all leading me to the conclusion that the crystals have drifted off frequency.  However, it also seems highly improbable that BOTH the LSB and USB crystal would become about 200 Hz low.  At this point, I'm thinking my next step is to buy replacement crystals and see if that fixes the problem.  Before I make the investment, any ideas or information on similar experiences would be greatly appreciated.

Thanks,

Warren, NR0V
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Date: Sat, 27 Mar 2004 16:43:40 -0800
From: "Ben Davis" 

Subject: {Collins} D-104 mikes


Good evening to all
does any one out there know of an outlet for Astatic D-104 mike elements =
 MC320 ?

Ben W6TCD
bfdavis@davisvill.org
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Date: Sat, 27 Mar 2004 18:45:17 -0600
From: "Herschel McCullough" 

Subject: {Collins} Re: 516F2 solid state modes


I would take some exception with this solid state issue, in a quick flash
yes that can very well be true , that  " it can cause more problems than
they solve "  solid state..  if indeed you just pull out the 2 rectifier
tubes and plug in the little diode base rectifiers, yup your voltages will
be skewed, and cause several other areas to begin overreaching in their
intended function or capacity..   but if you follow on with not just the
diodes but include the additional voltage lowering dropping resistors, thus
keeping voltages right in the same values that components were seeing
previously with the rectifier tubes..
And do remember that the Mother Ship [ Collins Radio Company ] formally
recommended that when you experience tube failures or high voltage arc overs
, that indeed , you replace the rectifier tubes with a Semtech  # SCH 5000
solid state rectifiers followed with a CPN 353 0425-010 and a listed price
of $ 7.91  ... an additional statement was included that it would be
expected to see on average a 12% increase in the respective voltages..
this was first published from CRG in the form of a Service Information
Letter 1-76  [ SIL ]  dated August 27th 1976 and was made directly relevant
to the 516 -F2 power supply, this SIL is a 4 page letter and goes on to
outline the various P/Ns and includes a schematic of the effected areas..
This can all be found in the Collins Compendium available from ER or Hi-Res
I think.. im not sure , but I do have mine, just don't recall where I got
it.
Now what is not said is that the follow on improvements should include the
dropping resistor and possible AC relay be installed.. And of course we know
where im going with this now don't we.. The BUDster to date has modified
over 478 ea. 516-F2 power supply's, and to date has not had any returned for
operational failures..
 To summarize, Mother [ CRG ] was aware of these issues and had began to see
the value in SS [ solid state ] this is supported by the PM-2 , as we know,
there are no tubes in the PM-2  only SS devices for rectification needs..
but the handwriting was on the wall as to the future production and
continuance of the 516-F2  1976 was pretty well the beginning of the end..
So this represents another view based upon facts of record [ SIL 1-76 ]  but
as always your mileage will vary, and this information from me is worth
exactly what you think it might be ..  thanx  mac/mc   w5mc


----- Original Message -----
From: "Joel Richey" 
To: 
Sent: Saturday, March 27, 2004 2:57 PM
Subject: {Collins} 516F2 solid state modes


> Do your self a favor and put the tubes back in, yeah solid state is more
efficient but  it wasn't designed for them and 5U4'S and 5R4's are plentyful
and your problem will be solved.  These mods cause more problems then they
solve..
> 73's Joe W2DBO
>
> Sponsored by the Collins Collectors Association
http://www.collinsradio.org
> Nets: Tues: 3.805 Mc-2000 Central / Thur: 3.875 Mc-2000 Central
> Fri: 3.895 Mc-2000 Pacific / Sun: 14.263 Mc-2000 UTC
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> Sun AM Net: 29.050 Mc-1200 Central
>


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Date: Sat, 27 Mar 2004 17:00:12 -0800
From: "Ian" 

Subject: {Collins} Re: D-104 mikes


A few months ago there was a notice that there were few left direct from
Astatic ($25 or $30 as I recall) and a short while later an announcement
that all were gone.

You will be lucky to find a normal source of them but if you do some
browsing of the archives if this and other "boat anchor" lists you should
find lots of discussion about alternatives.  It seems as though quite a few
people have put a current Heil cartridge in them and with a matching
transformer seem happy with how it works.

I suspect I'll eventually have the same problem with my old chrome D-104
that probably has a dead crystal cartridge in it after all these years.

Ian, K6SDE
 

-----Original Message-----
From: collins-bounce@mailman.listserve.com
[mailto:collins-bounce@mailman.listserve.com] On Behalf Of Ben Davis
Sent: Saturday, March 27, 2004 4:44 PM
To: Collins List (E-mail)
Subject: {Collins} D-104 mikes

Good evening to all
does any one out there know of an outlet for Astatic D-104 mike elements =
MC320 ?

Ben W6TCD
bfdavis@davisvill.org

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Date: Sat, 27 Mar 2004 21:06:20 -0600
From: "Herschel McCullough" 

Subject: {Collins} Want to Buy


im looking for 1 of each of the following items
350D-3  Shock mount    [ holds the 180s-1 tuner ]
351E-2  Shock mount    [ holds the 312B-4/5 unit ]
351E-4  Shock mount    [ holds the KWM-2/2A Transceiver ]

A  180Z-1/2  Antenna tuner

thanx  ..   mac/mc   w5mc  




Located 46 Miles due North of the Alamo
and 121 Miles due South of the Western White House

Visit my website at www.collinsandharrisradios.com

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Date: Sat, 27 Mar 2004 21:01:37 -0700
From: "Max" 

Subject: {Collins} Re: D-104 mikes


NO  BUT MOUSER  MAKES AN ELEMENT THAT IS ALMOST IDENTICAL IN FQY RESPONSE. I
HAVE USED THEM WITH GREAT SUCCESS... THERE STOCK # IS 25LM024  YOU CAN
CONTACT THEM AT 800 346 6873 DE MAX K7CAX AR
----- Original Message ----- 
From: "Ben Davis" 
To: "Collins List (E-mail)" 
Sent: Saturday, March 27, 2004 5:43 PM
Subject: {Collins} D-104 mikes


> Good evening to all
> does any one out there know of an outlet for Astatic D-104 mike elements =
>  MC320 ?
>
> Ben W6TCD
> bfdavis@davisvill.org
> Sponsored by the Collins Collectors Association
http://www.collinsradio.org
> Nets: Tues: 3.805 Mc-2000 Central / Thur: 3.875 Mc-2000 Central
> Fri: 3.895 Mc-2000 Pacific / Sun: 14.263 Mc-2000 UTC
> 1st Wed (of the month) AM Net 3.880 Mc-2000 local (ET, CT, MT, PT)
> Sun AM Net: 29.050 Mc-1200 Central
>

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Date: Sat, 27 Mar 2004 20:23:43 -0500
From: "James Riach" 

Subject: {Collins} Collins for sale


I have the following Collins items for sale (housecleanig). Actually need to pay for the new bike.
1  651S-1 receiver- with green LED display, rack mount with built in speaker(Collins) and both manuals. $900 2 CP-1 crystal pack with all xtals except the normal ham bands. $250
3 351D-2 mobile mount for the KWM-2 (NIB) and MP-1 power supply  $200
4 RE 302C-3 wattmeter  $250
5 KWM-1 full package  $2000(email for details if seriously interested)
6 RE 32S-3 transmitter $500
7 EV 664 mic on heavy round base and wired for collins S line etc  $125
  Jim  VE3DSR/VA3CCA
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Date: Sat, 27 Mar 2004 19:21:07 -0600
From: Gene McCalmont 

Subject: {Collins} Re: D-104 mikes


Hello Ben
Mouser (www.mouser.com) stocks the Kobitone brand of replacement crystal
microphone elements which work well as a replacement for the original D-104
element. The tonal response closely matches the range of the original
element and they can be had in HiZ to match older equipment. I have used
these elements with good success. You might want to give it a try and the
price is certainly right.

Kobitone Crystal Microphone element
Mouser Stock #25LM022
50hz to 8Khz
25k impedance $3.52
Mouser catalogue page = http://www.mouser.com/catalog/617/973.pdf

Several other crystal elements are also available on the same catalogue
page.

Best regards;
Gene


W5DDW
Gene McCalmont
CCA Member
Argyle Texas
gmcalmo@direcway.com

-----Original Message-----
From: collins-bounce@mailman.listserve.com
[mailto:collins-bounce@mailman.listserve.com]On Behalf Of Ben Davis
Sent: Saturday, March 27, 2004 6:44 PM
To: Collins List (E-mail)
Subject: {Collins} D-104 mikes


Good evening to all
does any one out there know of an outlet for Astatic D-104 mike elements =
 MC320 ?

Ben W6TCD

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Date: Sat, 27 Mar 2004 20:58:58 -0500
From: "Eldad" 

Subject: {Collins} Re: D-104 mikes


Ben,
I have crystal microphone cartridges that I believe will make excellent =
replacement for the original Astatic D104, and wherever a good =
communication response crystal microphone is needed. 1 3/16" diameter, =
1/4" thick, aluminum casing.
$22 shipped, conUS.


73,
Eldad
K2AB=20


----- Original Message -----=20
From: "Ben Davis" 
To: "Collins List (E-mail)" 
Sent: Saturday, March 27, 2004 19:43
Subject: {Collins} D-104 mikes


Good evening to all
does any one out there know of an outlet for Astatic D-104 mike elements =
=3D
 MC320 ?

Ben W6TCD
bfdavis@davisvill.org
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Date: Sat, 27 Mar 2004 21:50:35 EST
From: Barockteer@aol.com

Subject: {Collins} Re: D-104 mikes


I got an MC320 from:
 http://www.radio-nv.com


fair price, excellent service.

Tony, K1KP


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Date: Sat, 27 Mar 2004 21:44:03 -0600
From: "Jimmy G. Ball" 

Subject: {Collins} Re: D-104 mikes


I bought a new MC320 on eBay last fall. Saw a couple of complete new heads
on there today.
----- Original Message ----- 
From: "Ben Davis" 
To: "Collins List (E-mail)" 
Sent: Saturday, March 27, 2004 6:43 PM
Subject: {Collins} D-104 mikes


Good evening to all
does any one out there know of an outlet for Astatic D-104 mike elements =
 MC320 ?

Ben W6TCD
bfdavis@davisvill.org
Sponsored by the Collins Collectors Association http://www.collinsradio.org
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Date: Sun, 28 Mar 2004 07:18:34 -0500
From: "Dan Redman" 

Subject: {Collins} FS RE 32S3 Parts radio


I have a RE 32S3 that I will call a parts radio. Have no idea if it works,
but needs lots of cosmetic help. Has some extra holes in the cabinet, three
in the bottom and the back left round hole has been enlarged to a bigger
rectangular shape. Not bad but not original. Does not have any evidence of
smoked components.  I just do not want to mess with it.  Sell for $275 as-is
if you can use it.   Dan, K8DR, k8dr@columbus.rr.com

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Date: Sun, 28 Mar 2004 08:20:30 -0500
From: "Dan Redman" 

Subject: {Collins} 32S3 sold


Wow, took 3 minutes to get a committment on the parts 32S3. Glad someone can
use it...will let everyone know if something happens to the sale.  Thanks
again, Dan, K8DR

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Date: Sun, 28 Mar 2004 07:34:13 -0500
From: johnbess@netscape.net

Subject: {Collins} Re: 516F2 solid state modes


Clair,Mac and all.

Hello all. Here is my opinion on this subject.

Do not ever solid state the power supply!

You have to understand that solid state sends voltages to the radio within an instant. Tubes do not. This hits all of the circuits with voltage at the peak voltage rather than a little at a time that tubes do. This is known in some circles as a "soft start". Tubes do this. Solid state does not.

Yes, Collins did issue a Service info letter to the military to solid state the tubes if they were experiencing flash over due to the poor run of tubes that were released to the military at that time.

Yes, the PM-2 was a solid state supply. This was due to a military requirement that Collins provide them with a lightweight supply for portable usage. (The suitcase rig).

Collins did this but it was not in the best interest of the radio.

Who cared! The military could afford to replace tubes and radios when ever needed.

Who cared why the radios failed because they would last way beyond the warranty period.

There are a lot of reasons not to change from tubes to solid state, such as "Space charges" within the tubes of the radio, inrush currents, Stripping the electrodes from the cathode etc. Read up on tube theory in some OLD electronic books.

I hope this helps.

John, WA5VVT 

"Herschel McCullough"  wrote:

>I would take some exception with this solid state issue, in a quick flash
>yes that can very well be true , that  " it can cause more problems than
>they solve "  solid state..  if indeed you just pull out the 2 rectifier
>tubes and plug in the little diode base rectifiers, yup your voltages will
>be skewed, and cause several other areas to begin overreaching in their
>intended function or capacity..   but if you follow on with not just the
>diodes but include the additional voltage lowering dropping resistors, thus
>keeping voltages right in the same values that components were seeing
>previously with the rectifier tubes..
>And do remember that the Mother Ship [ Collins Radio Company ] formally
>recommended that when you experience tube failures or high voltage arc overs
>, that indeed , you replace the rectifier tubes with a Semtech  # SCH 5000
>solid state rectifiers followed with a CPN 353 0425-010 and a listed price
>of $ 7.91  ... an additional statement was included that it would be
>expected to see on average a 12% increase in the respective voltages..
>this was first published from CRG in the form of a Service Information
>Letter 1-76  [ SIL ]  dated August 27th 1976 and was made directly relevant
>to the 516 -F2 power supply, this SIL is a 4 page letter and goes on to
>outline the various P/Ns and includes a schematic of the effected areas..
>This can all be found in the Collins Compendium available from ER or Hi-Res
>I think.. im not sure , but I do have mine, just don't recall where I got
>it.
>Now what is not said is that the follow on improvements should include the
>dropping resistor and possible AC relay be installed.. And of course we know
>where im going with this now don't we.. The BUDster to date has modified
>over 478 ea. 516-F2 power supply's, and to date has not had any returned for
>operational failures..
> To summarize, Mother [ CRG ] was aware of these issues and had began to see
>the value in SS [ solid state ] this is supported by the PM-2 , as we know,
>there are no tubes in the PM-2  only SS devices for rectification needs..
>but the handwriting was on the wall as to the future production and
>continuance of the 516-F2  1976 was pretty well the beginning of the end..
>So this represents another view based upon facts of record [ SIL 1-76 ]  but
>as always your mileage will vary, and this information from me is worth
>exactly what you think it might be ..  thanx  mac/mc   w5mc
>
>
>----- Original Message -----
>From: "Joel Richey" 
>To: 
>Sent: Saturday, March 27, 2004 2:57 PM
>Subject: {Collins} 516F2 solid state modes
>
>
>> Do your self a favor and put the tubes back in, yeah solid state is more
>efficient but  it wasn't designed for them and 5U4'S and 5R4's are plentyful
>and your problem will be solved.  These mods cause more problems then they
>solve..
>> 73's Joe W2DBO

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Date: Sun, 28 Mar 2004 08:50:23 -0500
From: "Frederick W. Holmes, W1SKU" 

Subject: {Collins} SE from Hammond Museum


Hello to All,

Well, if you listened on or around 14.263 yesterday fro the Special Event
Station from Hammond Museum yesterday, you didn't hear us. Unfortunately,
because of the contest going on, 14.263 and most of the band was very busy.
We did manage to carve out a small space on 14.215 Mc, but of course, no one
was looking for us that low in the band. We did start the 40 meter operation
up and  Floyd, W8RO, took the first hour and operated on 7.263 Mc as we had
planned, and I took the second session on 40 meters. We were using a 75S-3
and 32S-3 station into a dipole.  It's too bad that we couldn't have worked
more station, and been operating more on 20 meters. This was our first SE
operation from Hammond Museum, and it won't be our last.

If you have never been to Hammond Museum, and live close enough to make the
trip, it is well worth it. This was my first time to the museum, and I can't
wait for a chance to go back. The museum as absolutely mind boggling, and
the staff, including the CEO, Fred's oldest son, go out of their way to
interact and help with visitors.

As I said, we will do it again, and hopefully not on a contest weekend.

73 de Fred, W1SKU
Net Manager

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Date: Sat, 27 Mar 2004 20:15:36 -0500
From: "Eldad" 

Subject: {Collins} Re: D-104 mikes


I have crystal microphone cartridges that I believe will make excellent =
replacement for the original Astatic D104, and wherever a good =
communication response crystal microphone is needed. 1 3/16" diameter, =
1/4" thick, aluminum casing.
$22 shipped, conUS.


73,
Eldad
K2AB=20
  =20


----- Original Message -----=20
From: "Ian" 
To: ; "'Collins List (E-mail)'" =

Sent: Saturday, March 27, 2004 20:00
Subject: {Collins} Re: D-104 mikes


A few months ago there was a notice that there were few left direct from
Astatic ($25 or $30 as I recall) and a short while later an announcement
that all were gone.

You will be lucky to find a normal source of them but if you do some
browsing of the archives if this and other "boat anchor" lists you =
should
find lots of discussion about alternatives.  It seems as though quite a =
few
people have put a current Heil cartridge in them and with a matching
transformer seem happy with how it works.

I suspect I'll eventually have the same problem with my old chrome D-104
that probably has a dead crystal cartridge in it after all these years.

Ian, K6SDE
=20

-----Original Message-----
From: collins-bounce@mailman.listserve.com
[mailto:collins-bounce@mailman.listserve.com] On Behalf Of Ben Davis
Sent: Saturday, March 27, 2004 4:44 PM
To: Collins List (E-mail)
Subject: {Collins} D-104 mikes

Good evening to all
does any one out there know of an outlet for Astatic D-104 mike elements =
=3D
MC320 ?

Ben W6TCD
bfdavis@davisvill.org

Sponsored by the Collins Collectors Association =
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Fri: 3.895 Mc-2000 Pacific / Sun: 14.263 Mc-2000 UTC
1st Wed (of the month) AM Net 3.880 Mc-2000 local (ET, CT, MT, PT)
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Created by: Steve Modena, AB4EL
Last updated: Thursday October 23, 2008
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