From glowbugs@sco.theporch.com  Tue Mar 25 18:48:52 1997
Return-Path: <glowbugs@sco.theporch.com>
Received: from sco.theporch.com (sco.theporch.com [207.234.31.38]) 
          by uro.theporch.com (8.8.5/AUX-3.1.1)
          with ESMTP id SAA08445 for <shimshon@uro.theporch.com>; 
          Tue, 25 Mar 1997 18:48:49 -0600 (CST)
From: glowbugs@sco.theporch.com
Received: from sco.theporch.com (localhost [127.0.0.1])
          by sco.theporch.com (8.8.5/SCO-5.0.2) with SMTP
	  id AAA05771; Wed, 26 Mar 1997 00:35:55 GMT
Date: Wed, 26 Mar 1997 00:35:55 GMT
Message-Id: <970325193355_-1873000617@emout16.mail.aol.com>
Errors-To: ws4s@infoave.net
Reply-To: glowbugs@sco.theporch.com
Originator: glowbugs@sco.theporch.com
Sender: glowbugs@sco.theporch.com
Precedence: bulk
To: Multiple recipients of list <glowbugs@sco.theporch.com>
Subject: GLOWBUGS digest 486
X-Listprocessor-Version: 6.0 -- ListProcessor by Anastasios Kotsikonas
X-Comment: Please send list server requests to listproc@sco.theporch.com
MIME-Version: 1.0
Content-type: multipart/mixed;
Status: O

			    GLOWBUGS Digest 486

Topics covered in this issue include:

  1) Free TV tubes
	by Jeffrey Herman <jeffreyh@hawaii.edu>
  2) Moving? I don't know...
	by "Robert M. Bratcher Jr." <bratcher@worldnet.att.net>
  3) Re: Stainless steel wire
	by "Peter L. Demmer" <ampruss@hits.net>
  4) Re: Regens and Superhets
	by rdkeys@csemail.cropsci.ncsu.edu
  5) Re: Regens and Superhets
	by "Terry L. Dobler" <kj7f@micron.net>
  6) Re: Regens and Superhets
	by rdkeys@csemail.cropsci.ncsu.edu
  7) Regens and Superhets
	by "Rhett T. George" <rtg@ee.duke.edu>
  8) Catalog for your reference
	by TRIODEEL@aol.com

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

Date: 	Mon, 24 Mar 1997 17:10:13 -1000
From: Jeffrey Herman <jeffreyh@hawaii.edu>
To: boatanchors@sco.theporch.com, glowbugs@sco.theporch.com
Subject: Free TV tubes
Message-ID: <97Mar24.171020hwt.188179(3)@uhunix3.its.Hawaii.Edu>

Anyone in the Portland area - better pick these up! But write
to *him* and not me!  //  Jeff KH2PZ


>Bunch (several shoeboxes) of TV compactrons and high-voltage
>tubes.  Some NIB, some used.  Free to whomever wishes to 
>come by this week and pick them up local in Portland, OR area.
>Otherwise this coming weekend they go in the trash or out onto the
>plinking range.  Please reply via email.
>mgaidos@wv.mentorg.com


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

Date: Mon, 24 Mar 1997 21:25:39 -0600
From: "Robert M. Bratcher Jr." <bratcher@worldnet.att.net>
To: glowbugs@sco.theporch.com
Subject: Moving? I don't know...
Message-ID: <3.0.32.19970324212507.006e01f4@postoffice.worldnet.att.net>

At 01:37 AM 3/25/97 +0000, you wrote:
>
>Is everyone moveing to boatanchors@tempe.gov ?

No, I'm still here. I may (?) get a subscription to both glowbugs &
boatanchors.
Just haven't decided yet. If I don't then you will see me at the new BA
listserver.
Lets keep going as long as we can OK?

Robert M. Bratcher Jr.
E-mail to:
bratcher@worldnet.att.net
Record collector, 8mm, super 8, 16 and 35mm Film collector.
I like old radio's too.
Collins, Hallicrafters, National & Hammurland are my Favorites!

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

Date: Mon, 24 Mar 1997 20:16:43 -1000
From: "Peter L. Demmer" <ampruss@hits.net>
To: mkelly@faraday.dialix.com.au
Subject: Re: Stainless steel wire
Message-ID: <33376DCB.4F21@hits.net>

Murry;
IMMHO,stainless steel (SS), seems to work very ok as an electrostatic
wire antenna.  I used it in my 4 element, 4 band Quad for years with
great success.  The elements were the typical full wave length square
with the 0.125 lambda, element to element spacing.  The only time I had
a SS antenna problem was in a design of a small loop antenna (less then
1/4 wave in length) which is fundamentally a magnetic (h) field
receiving and transmitting type antenna. The problem is that all so
named, stainless metal sheet or wire consists of and is of a certain
amount of (iron) ferroaloy. Even nuclear grade SS has ever so little,
yet contains some Ferric elements.  Any ferric material responds
erratically to magnetic h field electron polar shifting disturbances at
radio frequencies. In my oun test case antenna, it would not exhibit nor
respond to the well known hi-Q  narrow bandwidth characteristics of a
better electrical conductor with a comparitively larger magnetitude of
relitively free electrons (copper or aluminum).  In my tests the SS
small loop antenna exhibited characteristics of a wide and erratic
bandwidth, dummy loading of varying unstable impedances.  On the other
hand, SS antennas such as simple fractional wave length, vertical whips,
full or half wave length dipoles and full wave loops have worked for the
most part, effectively and efficiently.  This will hold true so long as
the antenna you are considering is so designed to take advantage of it's
electrostatic and not its iron sensitive, electromagnetic radiating
properties.  An equally important feature in the design must address the
antenna coupling as well. There is always the necissity to employ
(again) (e) electrostatic or (h) electromagnetic RF feeder coupling.  On
this list,there is a wealth of knowledge and experience far greater then
mine oun.  72/3 Peter KH6CTQ



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

Date: Tue, 25 Mar 1997 14:16:11 -0500 (EST)
From: rdkeys@csemail.cropsci.ncsu.edu
To: hamradio@mm1001.theporch.com
Cc: glowbugs@theporch.com
Subject: Re: Regens and Superhets
Message-ID: <9703251916.AA131521@csemail.cropsci.ncsu.edu>

> 
> Is everyone moveing to boatanchors@tempe.gov ?

Dunno, yet.  I am keeping my feet in the works as long as I am welcome,
but the tempe group is an interesting crowd, that is a good adjunct
to the regular group.  Also, various other things are brewing here and
there.  Who knows how the dust will finally settle.  Me, I still wear
the BA/GB cap, regardless......(:+}}.....

> I have been thinking about the above topics superhets and regen receivers
> and am torn between the two. I want to build the simplest receiver that I
> can consistant with good performance. Good Sensivity and selectivety with
> the leas amount of components. I am thinking about combineing the superhet
> and regen like in the Simple-X series in my 1962 ARRL Handbook. However I
> seem to never be satisfied with the caned receivers so I am thinking about
> makeing a receiver like the one in the 1857 handbook but useing more
> modern tubes.

Simple supers with regenerative IF's and second detectors have been
around for a long time.  They work well, and get around some of the
problems associated with a normal regen, but the are not necessarily
any better, as I will hope to describe, below.  But, they will never
be a good signal signal receiver, unless you have some mean tuned circuits
in a VERY LOW IF strip.  Else, you need filters, and that defeats the
idea of the regenerative IF.

What the regenerative IF does VERY WELL is tighten up the selectivity
of the passband through the IF.  Add a regenerative second detector
after that, and you can get very good selectivity, second to none,
but not single signal selectivity.  It will always be double signal
because the detector can be heterodyned either side of the IF.  If you
really tighten up the IF at VERY LOW IF frequencies, like 50khz or
less, you can begin to get a single signal reception.  For example, on
the RAK receiver down at 20khz, you can detune 1khz and effectly drop
the signal out of the passband.  That is about as close as one can get
a regenerator to being single signal.  The TRF stages are acting like
a tuneable passband IF strip, and they really will cut the sidebands off
a signal in a hurry.  You have to hear it to believe it, and use broad
headphones that will pass the entire audio spectrum from dc to 10khz
or so.  It becomes very apparent of the HIGH LEVEL of selectivity
capable in these regens at those frequencies as you set the regeneration
on the edge and audibly hear the passband narrow down to a couple of
hundred cycles.  If that is what you are trying to do, then a regenerative
IF coupled with a good regenerative detector will be as good as the
latest sandystate box, or better, but it will always be double signal
to some extent.  Just remember to keep your coupling loose throughout
because the regen detector is much more sensitive than you think
(remember it is a square law detector).

> I would like coments from everyone on my Ideas.
> 
> Here is the lineup.
> 
> 1.A 6U8 or similar tube as first mixer and local oscilator feeding an IF
> transformer at 1700 KHZ useing a 1700 KHZ IF so that I can use band
> imageing.

Basically good, but you will probably have to wind your own IF cans
these days, unless anyone has an spares around for that QRG.  See the
1925-1932 QST's for how to wind good IF transformers yourself.

> 2. A 6bE6 as crystal controlled second mixer. I like this tube since it
> has good gain and is simple. THis would convert to 85 KHZ useing an old
> command IF Xformer that I have for the IF. This stage would have the RF
> gain control since the 6be6 can ge gain controled.

Basically good.  Standard technology.

> 3. A 6U8 as a regenerative detector with the triode section the BFO for
> CW/SSB. Use capacitors for feedback or maybe a tickler hand wound varying
> the screen voltage for regeneration control. I am wondering how the
> selectivity will be at 85 KHZ. Should I get good single signal CW
> selectivety. The BFO will be injected into the grid with a small tickler 
> or maybee stray tube capacitance. I have also thought about useing old TV
> stabilizer coils ar IF Coils at 100KHZ or maybe padding the Command coils
> down to 50 KHZ ar an alternative to 85 KHZ.

Dunno why you want an external heterodyne, although at low IF's it can
be advantageous if you are trying to passband the IF and make it variable
in passband tuning.  The best VLF receivers are heterodynes, with the
regens like the RAK a very close second.  The heterodyne sets require
an extra stage of RF because they don't have regenerative amplification,
usually, although you can add detector regeneration to tighten up
selectivity and increase gain, AND use an external heterodyne for
the detection.  Either way will work well, with a slight edge to the
heterodyne method.

> 4 A 6U8 or some Triode/Pentode as audio pre-amplifier/Power Amplifier
> since I like speaker capability.

Works fine for me.  Take headfone off of a 0.1-1ufd or so coupling cap
off the transformer high side or use 8 ohm headfones, or use a combo
output xfmr with a 500/600 ohm tap to run fones and a 8 ohm tap for speaker.

> I am torn between an IF stage for gain/selectivety and the regenerative
> detector for gain/selectivety. I could easily add a 6ba6 for the IF and
> have AVC and all those neat things but this would deviate from simple. I
> have already compromised by going to dual conversion since I know that
> more selectivety is available at the low freq IF's than at 1700 KHZ.

Put your selectivity in both places.  Us the IF to tighten up the selectivty
to 1khz or so and the detector selectivity to cut it down to 200hz or so.

> 
> My first home brew receiver was a regenerative with at least 1 pentode and
> maybee two. I don't remember anymore. I still remember listening to SW
> broadcast with that regenerative receiver. And adjusting the regneration
> on the edge for best gain and selectivety.
> 
> One concern about regeneration at 50-100KHZ is the ringing from the high Q
> as on aproches regeneration. I suppose that that could be a pain.

It does not happen.  That is a myth.  Never happens on any of my sets if
the parameters are set right.  You are using a 50-100khz IF to GET MORE
selectivity.  Even with several stages, it will not be sufficient to ring.
You will drop the AM to mush and lose much of the SSB sideband, though.
It is like passing AM or SSB through a tight 500hz or 250hz filter on
the sandystate box.   The sandystate boxes will actually ring some as will
xtal filter sets when you do that if they were not designed quite right.
An OT regenerator will just narrow the passband down do nothing.

> The temptation is real strong to add the IF and a product detector and AGC
> and S-meter for a higher performance design. It could be done with just 1
> more tube by useing the dual triod as the product detector/BFO and a
> silicone diod as an AGC rectifier. Would be pretty neat but I find it har
> to decide what to do.

Why get so complex?   If you want to do that, build the HBR-10 or whatever
that fancy 10-tuber superhet was in the 60's handbooks.  That is altogether
different from a regenerative style set.

> When all this is done I plan to also include in the box a QRP level
> transmitter maybee 6t9 or some other dual tube crystal controlled as the
> transmitter. 
> 
> This rig will be set up for 80 and 40 meters.

Sounds good to me.

> Kevin Pease
> WB0JZG
> Mount Juliet, TN.

73/ZUT DE NA4G/Bob UP


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

Date: Tue, 25 Mar 1997 11:43:33 -0700
From: "Terry L. Dobler" <kj7f@micron.net>
To: glowbugs@sco.theporch.com
Subject: Re: Regens and Superhets
Message-ID: <2.2.32.19970325184333.002c8928@pophost.micron.net>

Gang,
   Regen Bob replied:
<snippo>
>> One concern about regeneration at 50-100KHZ is the ringing from the high Q
>> as on aproches regeneration. I suppose that that could be a pain.
>
>It does not happen.  That is a myth.  Never happens on any of my sets if
>the parameters are set right.  You are using a 50-100khz IF to GET MORE
>selectivity.  Even with several stages, it will not be sufficient to ring.
>You will drop the AM to mush and lose much of the SSB sideband, though.
>It is like passing AM or SSB through a tight 500hz or 250hz filter on
>the sandystate box.   The sandystate boxes will actually ring some as will
>xtal filter sets when you do that if they were not designed quite right.
>An OT regenerator will just narrow the passband down do nothing.
>
Carl (KM1H?)raised the question of using a regen detector for VHF/UHF 
weak signal use over on the VHF reflector but I don't think much or 
any of it appeared here.   My question for Bob, or anyone else who 
would like to take it, is.... would the regen make a good weak signal
detector?   If you have spent any time with a weak signal link 
calculator it would appear that all you have to do is reduce the 
bandwidth of the receiver and the signal will come up out of the 
noise.   This is not the case for my poor ears as the ringing becomes 
stronger as narrower filters are used.   I find I can copy better 
with a 2.4 KHz filter than with a 500 Hz filter.   I have tried a 
40 Hz DSP based filter and the results were terrible.   If you could 
reduce the reciever bandwidth with a regen detector and have no
ringing it might be a very interesting experiment.   Has anyone one
the reflector tried such a scheme?   Thoughts anyone?

Terry  KJ7F
 


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

Date: Tue, 25 Mar 1997 17:45:47 -0500 (EST)
From: rdkeys@csemail.cropsci.ncsu.edu
To: kj7f@micron.net
Cc: rdkeys@csemail.cropsci.ncsu.edu (), glowbugs@theporch.com
Subject: Re: Regens and Superhets
Message-ID: <9703252245.AA131733@csemail.cropsci.ncsu.edu>

> Carl (KM1H?)raised the question of using a regen detector for VHF/UHF 
> weak signal use over on the VHF reflector but I don't think much or 
> any of it appeared here.   My question for Bob, or anyone else who 
> would like to take it, is.... would the regen make a good weak signal
> detector?   If you have spent any time with a weak signal link 
> calculator it would appear that all you have to do is reduce the 
> bandwidth of the receiver and the signal will come up out of the 
> noise.   This is not the case for my poor ears as the ringing becomes 
> stronger as narrower filters are used.   I find I can copy better 
> with a 2.4 KHz filter than with a 500 Hz filter.   I have tried a 
> 40 Hz DSP based filter and the results were terrible.   If you could 
> reduce the reciever bandwidth with a regen detector and have no
> ringing it might be a very interesting experiment.   Has anyone one
> the reflector tried such a scheme?   Thoughts anyone?
> 
> Terry  KJ7F

Terry, we all suffer a bit from the old ringing ears syndrome as we age.
Oh, well.  The regen detector is a square law detector which is most
sensitive down on the low end of the curve.  I have only used these
things on HF, up to about 22mhz or so.  The detectors have always
been VERY sensitive.  Unfortunately, they are also very sensitive
to noise.  If the noise floor (from atmospherics) is high, then that
is way over the internal detector noise.   Since I can only hear down
to the noise usually (some OT pfarts can copy well down into the noise)
the regen detector in that case is as sensitive as the best sandyboxes.
I have no good feeling for how well they would do up in VHF.  In the
old days, regens were often used up on 5 meters, until superregen slush
boxes came along.  They seemed to work pretty well there.  My expectation
is that compared to a plain mixer/bfo type of combination, at usual
IF frequencies of 30mhz and below, the regen detector will always be
much more sensitive and if set correctly much more selective than any
``modern'' detector.   It has its drawbacks, in that it requires some
degree of fiddling to get it optimized for a given set of conditions,
especially if you like to push the ragged edge of regeneration like I
do.  I don't have any hard laboratory data to support that though.
Perhaps a 955 tube or one of the nuvistors might work well enough
up to do in a high IF strip.  The way I would check it in place would
be to design a detector and some sort of audio (fet and LM-xxxx chip)
and run that on a bnc output from the IF strip lightly coupled to the
existing detector and compare the two.  If the regen detector was way
off in sensitivity compared to the modern detector (and I can't offhand
fathom why that would happen), then junk it.   If the regen detector
was at least as sensitive as the existing detector, then it should work
pretty well.  It will always be more sensitive than a linear detector
on weak signals, but will be more prone to static noise.  The only thing
I can think of offhand that would get in the way would be device noise
in the detector device itself.  The transistors and fets I have tried
in regen sets don't seem to be as quiet as the tubes in my hands.  I have
used 2N2819's and the like before and they made fair to good regen
detectors, but they were very tricky to get stable compared to a tube
in my hands.   They were also somewhat more sensitive than the tubes
if you hand-picked a good one.  They were also very touchy to get good
smooth control of regeneration so the ragged edge could be had.  Gee, maybe
that might be fun to try on the IF output from a converter of some sort.
Hmmmm.... sounds like some experimenting may be in order.

73/ZUT DE NA4G/Bob UP


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

Date: Tue, 25 Mar 1997 16:30:11 -0500
From: "Rhett T. George" <rtg@ee.duke.edu>
To: glowbugs@sco.theporch.com
Subject: Regens and Superhets
Message-ID: <199703252130.QAA24149@washington.ee.duke.edu>


 - Greetings -

Terry and Bob have been carrying on a fine discussion of bandpass
narrowing, perhaps in response to Carl's question.  Yes, ringing
accompanies the narrowed passband.  In the limit, the single frequency
which is passed occupies all of time.  That is a long while to wait
for the next component of a Morse character.

This behavior is known in the physics realm as the Heisenberg
Uncertainty Principle.  If the energy/frequency is known quite
closely, the time of occurrence is uncertain, and vice versa.

The Fourier Integral may tell more about this than you ever wanted
to know.

73					Rhett George - KE4HIH

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

Date: Tue, 25 Mar 1997 19:34:19 -0500 (EST)
From: TRIODEEL@aol.com
To: glowbugs@sco.theporch.com
Subject: Catalog for your reference
Message-ID: <970325193355_-1873000617@emout16.mail.aol.com>


--PART.BOUNDARY.0.28926.emout16.mail.aol.com.859336435
Content-ID: <0_28926_859336435@emout16.mail.aol.com.8187>
Content-type: text/plain

I have been reading with interest the mail I've been
getting as a member of your list.
I'm not trying to SPAM people, but since you are
using tubes, thought you or other recipients might be 
interested in my company's products.
Best Regards,  Ned Carlson
Triode Electronics, Chicago

--PART.BOUNDARY.0.28926.emout16.mail.aol.com.859336435
Content-ID: <0_28926_859336435@emout16.mail.aol.com.8188>
Content-type: text/plain;
	name="ALLSTUFF.TXT"
Content-Transfer-Encoding: quoted-printable

Our What We Say Is What You Get policy means that we don=92t relabel
tubes with phony brand names, or put fancy gold lettering and =

boxes on them, or tell you that little elves in the Black Forest =

made them in order to charge you  5 or 10 times what they=92re worth. =

We guarantee the goods you get are actually the brand =

and type advertised. Power tubes are tested and matched at typical =

operating voltages and dissipation using our nifty British =

military valve checker.
Most Popular Tubes ...Prices,Availability are subject to change.
12AX7 Russia 12AX7WA 3.95.. Russia 12AX7WB 5.95. =

Russia 12AX7WXT 6.95     China 3.95.. Yugo 5.95
Tesla 12AX7.these are near exact copies of exotic and rare =

Telefunken ECC803s.Get close to real Telefunken sound at a =

fraction of NOS prices! Tesla ECC83 7.95 =

Tesla ECC803s, gold pins, graded/slected at factory 24.95  =

12AU7. Yugoslav 4.95..Sylvania 12AU7WA/6189 JAN 5.95.. =

Tungsram ECC82 7.95   =

Mullard British military =93CV4003=94 12AU7WA 19.95
12AT7..Yugoslav 5.95 Sylvania/Philips ECG 12AT7WA 7.95
Mullard British military =93CV4024=94 12AT7WA 19.95
6DJ8 and equivalent (E88CC,E188CC,6922,7308)  Russia 6922 7.95
Tesla 6922/E88CC(Slovakia) 7.95   =

Siemens-WGermany NOS 1962,JAN-NATO military gold pin 6922  24.95.
KT88 Tesla (Slovakia) KT88 copy of British. 79.95 matched pair
Russian 6550C clear bulb-Very nice quality 39.90 match pair
6CA7/EL34 EL34-G Russia thin bulb-like Siemens 19.95 matched pair
6CA7/EL34 Russia fat bulb (Looks like GE ) 24.95/match pair
6CA7/E34L Tesla (Slovak) nice copy of Mullard  24.95/ matched pair
Dynaco ST70/MK4 should use EL34-G or Tesla  =

Mark II can use all 3 types.
6L6-GC/KT66..Russia 6L6WGC/5881 16.90/mpair =

Russia 6L6-GC 11.90/mpair =

6L6WGB/5881 Philips ECG/Sylvania 29.95/matched pair =

KT66 blue glass Chinese, selected, looks cool! $39.95/pair
350B Chinese, looks like WE,up to 600V Va, sub KT66 $59.95/ mpair
6V6-GT Russia 3.95 each  =

807 Russian 14.95    =

British ITT 5B/254M same as 807 but 1/4 inch cap,  19.95
6BG6-G Russian Same as 807, but octal base & better price! 5.95
5AR4/GZ34 Russia (new improved type) 8.95 =

5AR4/GZ34 Chinese 7.95
CV378/GZ37 Mullard mil Large bulb sub for 5AR4, WE422A  17.95 ea
300B Russian, Chinese, Cetron, WE, etc Call for avail and  price
Russian Tubes 5U4-G 5.95  6AS7-G 7.95 6BQ5/EL84 3.95  =

6C33 call for avail 6EU7 9.95 6N7-GT 3.95  6SJ7 3.95  6SL7-GT 3.95  =

6SN7-GT 5.95  811A calll 6267/EF86 call for avail 7189/EL84-M 7.95  =

7199 8.95 6B4-G Russian 29.95
Other popular tubes Lots more not listed, please call!! =

(call for info onstock)  =

5U4-GB 12.95  6AN8 5.95     6BM8/ECL82 5.95 6C4 4.95 6CA4/EZ81 4.95  =

6CG7/6FQ7(USA) 14.95 6CW4 8.95 6DL4/EC88 4.95 6FQ7 USA.see 6CG7  =

6FQ7 9.95 6GK5 USA 5.95 6GW8/ECL86 3.95  6J7 3.95   6SC7 6.95  =

6V4 3.95  6X4 3.95  12BH7 (yugo) 9.95  12BY7 14.95 =

12X4 3.95 5751 see below  5879 7.95  5965 5.95   7247/12DW7 14.95    =

TUBE SALE Prices and quantities on following items are limited =

to stock ON HAND, If you need more info please ask first. =

Guaranteed unused NOS
6AK5/EF95/5654 1.50 6AK6 75=A2 6AL5/5726 95=A2 6AT8 1.50 6AU8 1.00  =

6AU5-GT 1.50 6AX4-GTA 1.50 6BK5 50=A2 6BN6/6KS6 1.95 =

6CB6 1.50 6DG6 1.95  6DT6A 50=A2 6EH7/EF183 75=A2  6EW6 1.50 =

6GK5(Japan) 1.50 6GK5 GE 2.95 6GF7 2.95 6GS7 50=A2 6HA5/EC900 95=A2 =

6JB5/6JC5 95=A2 12AL5 25=A2  12EK6/12DZ6 50=A2 403B/5591 1.95  407A 1.00 =
 =

408A 1.00  5670/2C51W 1.95 5920/E90CC 1.50  6689/E83F 3.95  =

Limited Quantities on following hard to find items:
National type '50, 1994 date code. Looks like a 300B! $125 ea
Philips ECG Tubes 12FQ7 (Italy) 6.95 6GH8 (USA) 4.95
6F8-G A large bulb 6SN7-G, one of the grid leads on cap. 4.95
6V6-GT, NOS early 60's mfr USA, various mfr, 14.95 each =

Good used 6V6-GT USA 9.95 ea
6V6-GTA RCA & Sylvania 19.95
6V6-GT/CV511 made by STC (UK equiv of WE) British mil 17.95 each
6SN7-GT/GTA/GTB, various mfr new old stock USA mfr, 9.95 ea
12SN7-GT and 12SL7-GT,  a 6SN7 or 6SL7 but 12V fil, NOS USA, 3.95
DG7-32 Marantz 10B scope tube, Mullard (england ) 69.95
DG7-32 Tungsram (Hungary) $49.95
5751 Sylvania gold pin, NATO military grade NOS 24.95
5751 Philips ECG, (USA) 8.95
Computer grade capacitors!   1900 uF 250V 4.95  580 uF 400V 4.95 =

880 uF 350V 7.95  1100 uF 450V 9.95  (Clamps-1.50)
Sprague 800 volt 715P polypropylene cap, .0033 or .0047 uF .29 ea
Axial lead Polypropylenes, your choice .001-1500V, .0015 1KV, =

=2E0047 1600V, .0068 1KV  .39 each  =

Roderstien .037-400V axial polypropylene .29 each
Sprague 410P Axial .15 uF 300V  .29 ea  =

F-Dyne .022-400V axial .29 each
ALPS 50K stereo combo Volume/Balance control,large case,detents 9.95
Noble 250K volume control cast case,cond plastic 19.95
ALPS 24 pos 4 deck switches with =

PC boards for stepped atten, 24.95 ea
Terminal strips,  Phenolic Bag of 30 pcs 1.95
Soldering Irons, big ones for thick metal.
Wood handle.60W 4.95,100W 6.95
Transformer, #23V17 (Thordarsen) 117V 300 ma , open frame 9.95
Transformer, Triad F-90X, multiple taps 10V to 40V, 4.95 ea
Tube tester xfmr, multiple fil taps 1.5 to 117V, B+, =

rectifier windings 9.95
Choke,Stancor #C2344 1.5H 10ma, 1500V hipot 1.95 ea
Sockets, Octal (for GZ34 ,EL34, 6550, 6L6,etc) British Micanol =

(brown plastic) McMurdo phosphor  bronze contacts,
J1 1/2" mnt centers 2.95 each
9 pin ceramic chassis mount w/ shield 1.95 each
9 pin chassis mount McMurdo socket, similar to above  1.95
9 pin ceramic chassis mount with shield, fits 12AX7/6DJ8, 1.95
Have Tube Sockets and Top  Caps of all sorts.If you don=92t see it  =

please ask.
Dusty Files Part 2, Favorite Amp Plans, 25 tube power amplifiers =

that may be constructed from generally available, =

reasonably priced parts.
Includes handy Resistance Coupled Amplifier charts. 9.95
=0D
Other Regular Stock Useful Items
Computer grade capacitors, clamp mount  1 3/8 dia. Made in England =

100 + 100 uF 500V 13.95      50+50 at 500V  9.95   =

40-20-20-20 uF at 500V Clamps add 1.50
Axial Electrolytic Capacitors Other lower voltages also stocked =

500V:22 uF 2.95  47 uF 3.95
450V: 10uF 1.25 22 uF 1.79 47 uF 2.95 80 uF 3.50 100 uF 3.95
300V: 200 uF 4.95
160V 10 uF .39  22 uF .49  33 uF .49  47 uF .59  100 uF  .99
50V 10 uF .19  22 uF .19  33 uF .19  47 uF .25  =

    100 uF .29  220 uF .39  330 uF .49 1000 uF .95  1500 uF  1.50  =

    2200 uF  1.95  3300 uF 2.50
25V 10 uF .19  22 uF .19  47 uF  .19  100 uF .19  4700 uF 1.95
Note:When replacing electrolytics it is normally OK to replace with =

higher voltage, and/or with a value -20 % to +100% (or higher) than =

original. =

5 watt Zener diodes, 47, 82, 100, 110, 120, 130, 140, 150 volts,1.95 each=

Diodes, 1N4007 1A 1000V, pack of 5, .95    2.5A 1000V  pack of five 1.95
High Voltage Diode, 500 ma 12,000 volt PRV rating (wow!)  5.95 each
Neutrik  XLR connectors gold plate contacts, black case, specify male or =

female, cord or chassis mounting. 4.95 each
Punch Kits, will punch all chassis above (up to 18 ga steel), covers all
popular tube socket holes, 5/8, 3/4, 7/8 , 1, 1 -1/8, 49.95 each
Lettering kits, dry transfer, for marking chassis. Specify Black or White=
=2E =

Choose Audio Words (#AUD-1)  Terminal Letters and Numbers (#TC-13) =

or Dial Marking (for volume/selectors,etc) (#DM-13)  $3.29 per large pack=
=2E
FM Radio Alignment Tool Kit, has most popular types. #AT-1  1.95
Metal Film resistor kit,100 pc, 20+ popular values 1/2 watt 1%  6.95
Power Resistor Kit, 100 pc,20+ pop values 3 to 7W metal oxide 14.95 =

Tube Manuals, reprints, RCA (1959) 13.95, GE (1972) 12.95, WE 17.95
RCA Jacks, gold plated with teflon insulation and teflon washer to insula=
te =

from chassis. Same as Royce-style we used to sell. Red or Black   2.95 EA=
CH
Insulated Gold Binding Post, 15A capacity. Red or Black. 2.95  EACH
Metal Gold Binding Post, with color-coded insulating washer.  15A capacit=
y
Specify Red or Black. 2.95 EACH
Banana Plug, gold, takes up to 10AWG cable. Red or Black. 2.95 EACH
Spade Lug, gold, takes up to 10AWG cable. Red or Black. 2.95 EACH
Various esoteric audio wire & connectors, pls call for details
Mystery Polystyrene Capacitors Hard to find high voltage values.
These types rated 630V, 1% tolerance: 10 pf, 12 pf, 15 pf, 18 pf, 22 pf, =

27 pf, 33 pf, 47 pf, 56 pf, 68 pf, 82 pf  1-9 pcs 1.95 each,  =

10-24 pcs, 1.59 each, 25 + pcs 1.35 each
Rated  630V, 1% tol: 100 pf, 120 pf, 150 pf, 180 pf, 200 pf, 220 pf, 270 =
pf, =

330 pf, 390 pf,  1-9 pcs .99 each, 10-24 pcs .79 each,  25 + pcs .69 each=

Rated  630V, 5% tol: 470 pf, 560 pf, 620 pf, 680 pf, 750 pf, 820 pf
1-9 pcs .69 each,  10-24 pcs .55 each,  25 + pcs .49 each
Rated 630V, 5% tolerance: 1000 pf, 2200 pf, 3300 pf, 4700 pf
1-9 pcs  .49 each  10-24 pcs .39 each,  25+ pcs  .35 each  =

Mystery Polypropylene Capacitors. All 10% tolerance. =

Quantity discounts as follows:
10 to 24 pcs, 20% off, 25 or more 33% off. Over 100:call forquote.
Rated 630V: .01 uF .45,  .022 uF .45,  .033 uF .45,  .047 uF .45,  .1 uF =
=2E60  =

=2E15 uF .75 .22 uF .75,  .47 uf .95  400V: .15 uF .50  .22 uF .60,  .47 =
uF .75, =

=0D
No voice mail, no brain-dead sales clerks,no audio gurus =

or secret Illuminati operatives.
Just Worldwide Service,Neighborhood Prices,since 1985.
Triode Electronics
NOTE:New PO Box Number: Box 578501, Chicago,IL 60657 USA
Office  : 2225 W. Roscoe St., Chicago, IL 60618 USA
All Phones: 773-871-7459   Fax machine (24 hours) 773-871-7938
Hours (CST) MonTues,Thurs,Fri 12:30 PM to 8 PM (1830-0200 UTC)
 Sat 12:30PM-5PM
email:TRIODEEL@AOL.COM
We accept VISA/MC/AMEX/DISCOVER
Terms of sale: No minimum order for credit cards or cash, however minimum=
 =

shipping charge (UPS)$4.00 Heavy items charge is chart rate plus $1.00 (U=
SA) =

plus $3.00 (export). =

UPS-COD (USA/Puerto Rico Only) add $5.00. =

COD's are cash-only, $50 min order, $5.75 charge.
Illinois residents add 7.75% tax, Chicago residents & pickups add 8.75% t=
ax. =

Most parts except for tubes and sale items can be returned for credit wit=
hin =

30 days if with original packing and unused. Most Tubes =

(except sale items where noted) are warranteed 3 months but tubes if defe=
ctive =

are returnable for exchange only. =

Other items may be subject to 15% restocking fee. =

This normally waived if you apply credit towards another purchase. =

Please phone in advance if you wish to pick up parts at the office in ord=
er =

to avoid delays in filling your order.
No elves were harmed in the production of this catalog.=0C
=0D
Antique, Unique & European Tubes
Orig box unless otherwise noted "WB" white box. All unused NOS
except where noted. Items we can't test sold subject to your testing
EF37 (British 6J7 equiv) grey 6 pcs WB		=

6L6 metal RCA 20 pcs
874 (4 pin voltage reg) 26
7054/8077 10						=

6080WC  3
EA76 Ampx 4						=

5V3/5AU4 USA Poss sub 5U4-GB  35 =

EF80 Misc >25						=

6686/E81L 4  =

E90CC Sie 10						=

6350 (USA) 5
6/30L2 Mazda (UK) 10					=

6360 4
EL821 Ampx 4						=

6227/E80L 7
6R4/EC91 Ampx 6					=

6197 20
8106 5							=

JAN-5725  >50
EF800 Telfunken 2					=

5824  10
EL803-s TF 10						=

5755  10
6688/E180F Valvo 9, Rayth 6				=

1629  3
7056 22						=

7060 11 pcs
T-200, sim to 211 but 200W, 2550V rating, 1 pc only	=

6AR5  5			=

8136 5							=

6C6 20
5847/404A WE 11  WB					=

6D6 10
923  3							=

715B Raytheon 3 pc
328A Sylv  4						=

5691  Sylvania  11  =

337A Sylv 4						=

HY75 Hytron 1 pc
403B Ericsson >20					=

4B32 3
6FE5 "hot " sub for 6V6 30 pcs
VVC-60-20 Eimac vacuum capacitor 1			=

VC-100 vacuum capacitor 1
822 Taylor OB but used 2								=

TW-150 Taylor  used 2
805 Taylor OB appears unused  1			=

375A  1  WB, looks OK, can't test
8458/YL1240  Siemens WB don't have test data 1	=

6352 Philips, WB, looks OK
6E5 RCA 5						=

EM34/6CD7 Mullard 1
DM70/1M3 Mullard 3
6J5-GT Raytheon, KenRad 				=

7C5, (=3D6V6-GT loktal base)  15 pc
12SN7-GT Tungsol, 1960 date code 30		=

6K6-GT USA 40
CK 5702   8						=

5643   13				=

8056 28393   3						=

7895 Sylv 11
7587   2						=

6CW4 Zenith (GE) 15
6AG5 <100 pcs				=

6AL5/E91AA/5726 >200
6C5 RCA/GE >100			=

6F5 Rca & others >50
6GK5 >400
6CB6A >100				=

6AU8 >100
6DT6 >100				=

6AX4  400 OEM pk
12AX4 100				=

6F5 RCA  >50
6F8-G >50				=

6SL7-GT GE 20
12FQ7 Japan >50
5965A GE OB >50			=

5965 GE WB 30
5965 RCA OB 40			=

6AW8 >100
6005/6AQ5/EL90 >150			=

19AX4-GTA >65
5725W JAN >50			=

7258 (6AN8A with 12V fil) 50
5696 >50				=

12AV7 Syl 30
6HA5/EC900 >100			=

6GC5 >100
6JC6A >100				=

6BN8 >25
6GF7 RCA OEM pk  >50		=

6ER5/EC95 >50
6AF4A/6DZ4  >25			=

R-465 Hammatsu Photocell 50 pc			=

6FE5 30 pc				=

12AB5 Sylv(Webcor) 100 pc ( 6973 but 12V fil)
6GK5 GE (UK & USA mfr) >400	=

6BN4 >25
Ned Carlson, 773-871-7459 after 12 CT (after 1830 UTC)
Email:TRIODEEL@AOL.COM
PLEASE NOTE OUR NEW AREA CODE. =

Visa/MC/Amex/Discover accepted.
=0D
vintage
Tube Amps
Tuners and accessories
Power outputs and descriptions are out of necessity brief and
approximate. Please call  for specific info on each piece.
=0CElite
Audio Services =

2225 W Roscoe St =

Chicago IL 60618
Ph 773-327-5652
=0CDynaco =

We have ST70=92s, PAS-3X=92s, =

FM-3=92s, and usually other misc items normally in stock. Please call for=
 details.
=0CKnight/Allied
KN-1515, tube stereo basic amp, 6BQ5's (15W/ch), cute nice sounding amp
Allied 285 tube stereo AM/FM tuner, nice cond, metal cabinet, tuning mete=
r
(2 pcs) KN-918 tube stereo integrated amp, single ended 6BQ5's (6 w/ch),
both metal cabinets nice cond, amaze your friends and confound your enemi=
es =

with this cute, simple amplifier
KG-35 mono tube FM tuner, good cond
KN-245 tube stereo AM/FM tuner, metal cabinet, nice cond
(3 pcs) KN-125B tube stereo/binaural AM/FM tuners, all w/ metal cab, nice=
 cond
KN-110 mono FM/AM tuner, tuning meter, metal cab, faceplate a little rust=
y
KN-345 tube stereo FM/AM recvr, good cond
KN-125M AM/FM stereo tube tuner, with matching KN-750 stereo tube integra=
ted amp, =

EL34's (35W/ch) both gold faceplates with metal cabinets
KB85 tube stereo basic amp, chrome chassis,
35W/ch (6L6=92s or EL37s) =93Mullard=94 circuit
=0CHH Scott
350-B stereo tube tuner, nice cond, working, wood cabinet
(2 pcs) 299 Stereomaster integrated tube stereo amp, both working, 1 meta=
l cab, =

1 wood cab
use 6BQ5's (15W/ch), both nice cond
222 stereo tube integrated amp, 6BQ5's (15W/ch), nice cond
333-B Stereomaster tube AM/FM tuner, good cond
(2 pcs) 330-B tube AM/FM binaural tuner, one VG cond, =

on removable rack mount plate,other good cond but missing AM tuning knob
330-C tube binaural AM/FM tuner, nice cond, wood cabinet
LT-110B tube stereo AM/FM tuner, tuning meter, nice cond
=0CHarmon-Kardon
Award Series 300 Stereo integrated tube amp, 6V6's (15W/ch), nice cond wo=
rking
"XAM" Mark IV, Same as Award 300, house brand made for EJ Korvette's (rem=
ember them?)
by Harmon Kardon. Be the first on your block to own a "XAM"!! with metal =
cabinet.
"XAM" Mark VI, stereo AM/FM tube reciever, 6V6's (15W/ch), nice cond, wor=
king,
another Korvette's special made by HK, "xam" bam thank you ma'am! With me=
tal cabinet.
"Sonnet" AM/FM stereo tube tuner, with metal cabinet. Not fancy unit grea=
t tube sound reasonable price!
"Ballad" stereo integrated tube amp, 6BQ5's (15 w/ch), with metal cabinet=
=2E Great clean 6BQ5 sound
T300X tube stereo tuner, exc companion to Award 300 stereo tube amp above=
=2E
"Trio" stereo tube interated amp, with metal cabinet, good cond, clean so=
und of 6BQ5's (15W/ch)
"Theme II" mono AM/FM tube tuner, good cond
=0D
 =

=0C vintage Tube Amps
Tuners and accessories
Power outputs and descriptions are out of necessity brief and approximate=
=2E =

Please call  for specific info on each piece.
=0CFisher
500-B tube stereo rcvr, 7591's output (35W/ch) nice cond, working, missin=
g knob caps, wood cabinet
101-B tube AM/FM binaural tuner, VG cond, working,magic eye tuner, gold f=
aceplate
101 stereo tube integrated amp, 6BQ5's (15W/ch), nice exc blotch on fron =
panel
KX-100, stereo tube integrated amp, 7868's (30W/ch), nice cond, needs tub=
es
FM-100-C tube stereo FM stereo tune, great tube sound without remorgaging=
 your house
TA-600 AM/FM stereo tube rcvr, good cond, dual tuneeye
80 AM/FM mono tube tuner, nice cond
101R AM/FM tube binaural tuner, VG cond
X-101-B stereo tube integrated amp, 7868's (25W/ch), good cond
500-S tube stereo recvr, nice sound, 6BQ5's (15W/ch), faceplate a little =
sctratched up
70-A monoblock tube amp, sorry only have one!, uses 5881/6L6-GC (25W) goo=
d cond
X-101 stereo tube integrated amp, nice cond, wood cab
MPX200 stereo multiplex adapter, works with any mono tube tuner with mpx =
output. No case, complete
MPX100, same as MPX200 above, but has faceplate
 =

=0D
=0CHeathkits
FM-4 tube mono FM tuner, nice cond, working, metal cabinet
(3 pcs) AA-32 tube stereo integrated amps,nice cond, working, use 6BM8/EC=
L82 (10W/CH), =

two w/ metal cabinets
Heath stereo tube integrated amp, no mod#, nice cond, working
(2 pcs)AC11 stereo FM multiplex adapters, both complete with cabinets
=0D
=0CMiscellany
Challenger tube stereo intgrated amp, 6BM8's (10W/ch), nice cond, metal c=
ab
(2 pcs) David Bogen DB-20 mono integrated hifi amps, use 6L6/5881's, 20W =
output,
"tubes on top" classic 50's hi-fi looks. Real hi-fi, not a PA amp!
(2 pcs) Eico ST70 & 1 pc ST40 tube stereo integrated amps, metal cabs, us=
e (argghh!) 7591's, =

could be rewired for 6L6/5881. ST70 is 35W/ch, ST40 20W/ch
(2 pcs) Eico HFT-90 mono tube FM tuners, good cond
(2 pcs) Eric tube mono FM tuners, good cond
Grommes 55-PG tube mono integrated amp, small cute unit, uses 6V6's (12W)=
, recent retube =

Grommes mono FM/AM tube tube rcvr, 6BQ5's (15W) output
Grommes 61-PG mono integrated tube amp, 6L6/5881 (20W) output, nice cond
(2 pcs) Grommes integrated tube stereo amps, 1 with metal cab, GC, other =
nice cond but =

no cabinet, 6BQ5's (15W/ch)
Grommes mono AM/FM tube tuner, no cab, 6BR5 tuning eye
Hallicrafters 20W monoblock, 6L6's, made by Radio Craftsmen for Hallicraf=
ters, =

same parts & circuit as C-500 Craftsmen amp
Herald tube stereo integrated amp, nice cond, metal cabinet, 10W/ch
(2 pcs) Home-brew Williamson circuit tube monoblock amps, 20W, ultralinea=
r 6L6/5881 (20W), nice work =

Karg Labs tube FM stereo tuner, nice cond, needs cabinet
Kenwood KW-44 tube stereo AM/FM recvr, w/metal cab, 6BM8's (10W/ch), work=
ing
Pacemaker tube stereo integrated amp, 6AQ5/EL90's (10W/ch), nice cute sma=
ll unit =

(2 pcs) Pilot AA-902, tube monoblock amps, 6L6's (25W) good cond, new Rus=
sian 5881/6L6WGC tubes
Pilot SM-244 tube stereo integrated amp, 6BQ5's (15W/ch),metal cab
Pilot AF-850 AM/FM mono tube tuner, nice cond, working, needs dial cord =

Pilot 240 stereo tube integrated amp, 6BQ5's (15W/ch) metal cab, nice con=
d
Pioneer SX-800 tube stereo AM/FM recvr, metal cab, 6BQ5's (15W/ch), nice =
cond,working
(2 pcs) RCA MI-series commercial AM/FM tuners, 18 tubes, 1 with rack moun=
t frontplate
Radio Craftsmen RC-10 mono AM/FM tube tuner/preamp, nice cond, working
Sherwood S-2100, tube stereo FM/AM tuner, interchannel mute, nice cond, t=
uning meter
VM stereo tube integrated amp, 6BQ5's (15W/ch) nice cond, metal cab, uniq=
ue looks!
Speakers (in pairs)
Jensen TF-3C, 10 inch woofers, 3 way system
Jensen EDI-203 2" by 6" (52mm X 156mm) horn tweeters =

=0CElite Audio Services 2225 W Roscoe St Chicago IL USA 60618  =

Ph 773-327-5652      Fax 773-871-7938
We accept VISA MC AMEX DISCOVER

--PART.BOUNDARY.0.28926.emout16.mail.aol.com.859336435--


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

End of GLOWBUGS Digest 486
**************************

