Subject: GLOWBUGS digest 385

From: [email-masked]
Date: Tue, 17 Dec 1996 10:42:48 -0600 (CST)

GLOWBUGS Digest 385

Topics covered in this issue include:

  1) Re: 8-10 ma meter needed for Heath novice xmtr, and other 
	by Roy Morgan <[email-masked]>
  2) Meters
	by [email-masked] (Steve Linscott)
  3) Re: 
	by "Brian Carling" <[email-masked]>
  4) Re: 
	by Jeffrey Herman <[email-masked]>
  5) Re: 
	by "Brian Carling" <[email-masked]>
  6) Madison Electronics? (was Re:meters)
	by "Robert M. Bratcher Jr." <[email-masked]>
  7) A word of thanks
	by "Bowes, Fr. Bruce" <[email-masked]>
  8) Motor Start Capacitors
	by [email-masked]
  9) Re: Motor Start Capacitors
	by Roy Morgan <[email-masked]>
 10) Re: Motor Start Capacitors
	by [email-masked] (Jeff Duntemann)

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

Date: Mon, 16 Dec 1996 14:05:49 -0500
From: Roy Morgan <[email-masked]>
To: [email-masked]
Subject: Re: 8-10 ma meter needed for Heath novice xmtr, and other 
Message-ID: <[email-masked]>

At 08:11 PM 12/15/96 -0600, you wrote:
>Hello Glowbug types,
>
>I need to find an 8ma to 10ma meter for a Heath novice xmtr.  Prefer the
>square plastic Heath type or an older open face round meter. 

Doug,

Here's a very useful source for meters and such - very helpful guy, will
correspond by e-mail, and can now take visa (via fax).  Do not be afraid to
deal in canada - worked fine for me.

OOPS, I jsut tried it and the following site no longer works:

http://infoweb.magi.com/~testequi/

the e-mail address I have is:

http://infoweb.magi.com/~testequi/

W.J. Ford Surplus Enterprises
21 Narjet St. N. P.O. Box 606
Smiths Falls, Ontario, CA
613-283-5159
613-283-0637 faz

-- Roy Morgan/Building 820, Room 562/Gaithersburg  MD 20899
(National Institute of Standards and Technology,  formerly NBS)
301-975-3254 Fax: 301-948-6213  [email-masked] --

-- Roy Morgan/Building 820, Room 562/Gaithersburg  MD 20899
(National Institute of Standards and Technology,  formerly NBS)
301-975-3254 Fax: 301-948-6213  [email-masked] --

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

Date: Mon, 16 Dec 1996 13:52:18 -0600 (CST)
From: [email-masked] (Steve Linscott)
To: [email-masked]
Subject: Meters
Message-ID: <v01530501aedb026c35f7@[128.42.14.170]>

Don Busick, K5AAD, has hundreds of panel meters left over from the closing
of Madison Electronics.  Most are NOS (in original boxes), some are
surplus, and some are antiques.  Don's address is

                 Don Busick
                 12310 Zavalla
                 Houston, TX 77085

And no, I don't get a commission!  :-)

                                          73 de W5EGP

                                               - Steve -

******************************************************************************
*     Steve Linscott        Divisional Consultant        Natural Sciences    *
*   Rice University     6100 South Main Street    Houston, Texas 77005-1892  *
*    Phone: (713) 527-4985   FAX: (713) 527-6099   Email: [email-masked]   *
******************************************************************************

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

Date: Mon, 16 Dec 1996 12:30:40 +0000
From: "Brian Carling" <[email-masked]>
To: [email-masked]
Subject: Re: 
Message-ID: <[email-masked]>

On 15 Dec 96 at 17:14, Peter Holtham chatted merrily:
 
> >China (PRC) has just recently started issuing BA calls, according
> >to a net news source.  Can anyone confirm this?

> 
> Yes, I have worked a couple on 40 m cw recently, can't remember the
> calls, don't have my log at work, BA1AT was one I think.

Hello Peter - maybe we can work YET on the GB frequencies when condx 
permit!

BTW - I HEARD some of those chinese portable stations last night.
Sandy W5TVW was on from Red China as W5TVW/BA but I couldn't get him 
to hear my little 4 watt GB!
********************************************************
*** 73 from Radio AF4K / G3XLQ in Gaithersburg, MD USA *
**  E-mail to:  [email-masked]                         *
*** See the great ham radio resources at:              *
**  http://www.mnsinc.com/bry/                         *
********************************************************

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

Date: 	Mon, 16 Dec 1996 12:16:04 -1000
From: Jeffrey Herman <[email-masked]>
To: Brian Carling <[email-masked]>
Subject: Re: 
Message-ID: <Pine.GSO.3.93.961216121034.11419A-100000@uhunix3>

> > >China (PRC) has just recently started issuing BA calls, according
> > >to a net news source.  Can anyone confirm this?

Gee, I wonder what an American would have to do to get one of 
those BA calls? I think I'll write to the Chinese Embassy.

Jeff KH2PZ (thinking how to get BA4DX)

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

Date: Mon, 16 Dec 1996 15:56:26 +0000
From: "Brian Carling" <[email-masked]>
To: Jeffrey Herman <[email-masked]>
Subject: Re: 
Message-ID: <[email-masked]>

On 16 Dec 96 at 12:16, Jeffrey Herman chatted merrily:

> > > >China (PRC) has just recently started issuing BA calls,
> > > >according to a net news source.  Can anyone confirm this?
> 
> Gee, I wonder what an American would have to do to get one of 
> those BA calls? I think I'll write to the Chinese Embassy.
> 
> Jeff KH2PZ (thinking how to get BA4DX)

Alright then Jeff, and I will try to get BA2CW

********************************************************
*** 73 from Radio AF4K / G3XLQ in Gaithersburg, MD USA *
**  E-mail to:  [email-masked]                         *
*** See the great ham radio resources at:              *
**  http://www.mnsinc.com/bry/                         *
********************************************************

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

Date: Mon, 16 Dec 1996 20:20:45 -0600
From: "Robert M. Bratcher Jr." <[email-masked]>
To: [email-masked]
Subject: Madison Electronics? (was Re:meters)
Message-ID: <[email-masked]>

At 07:53 PM 12/16/96 +0000, you wrote:
>Don Busick, K5AAD, has hundreds of panel meters left over from the closing
>of Madison Electronics.  Most are NOS (in original boxes), some are
>surplus, and some are antiques.  Don's address is
>
>                 Don Busick
>                 12310 Zavalla
>                 Houston, TX 77085
>
>
>
>And no, I don't get a commission!  :-)
>
>                                          73 de W5EGP
>
>                                               - Steve -
>
>
>
>***************************************************************************
***
>*     Steve Linscott        Divisional Consultant        Natural Sciences
  *
>*   Rice University     6100 South Main Street    Houston, Texas
77005-1892  *
>*    Phone: (713) 527-4985   FAX: (713) 527-6099   Email: [email-masked]
  *

Madison Electronics? Yeah I remember that place very well. Missed it when
the place finally closed as so many other Houston customers did. No place
like it that I know of anymore. Just ham radio swap meets now...

Robert M. Bratcher Jr.
E-mail to:
[email-masked]
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, 16 Dec 1996 23:08:01 EST
From: "Bowes, Fr. Bruce" <[email-masked]>
To: The Glowbugs tube list <[email-masked]>
Subject: A word of thanks
Message-ID:  <[email-masked]>

Gang,
As a newbie, I want to thank all of you who answered my questions and
have offered to help.  I am quite excited about building a 6L6 trans-mit
ter. I am going to try to assemble the parts that I need.
Since the Feast of Christmas is almost upon us, I will have to wait til
after the New Year to start in earnest.
Again, my thanks and a Blessed Christmass to one and all
Fr Bowes   KB2TRF

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

Date: Tue, 17 Dec 1996 00:49:05 -0700 (MST)
From: [email-masked]
To: [email-masked]
Subject: Motor Start Capacitors
Message-ID: <[email-masked]>

   I wonder if I could pick the brains of all those improvisers out there,
   once again.

   I'm scavenging filter capacitors for a 6L6 one-tuber power supply.
   I like to dig things up locally, and cheap, if possible.  

   I have access to a local outlet that sells surplus electronics
   which is mostly of an industrial nature.  There are high voltage
   capacitors which are in the 25 to 50 uF / 350 VAC range.

   The AC rating is because they are motor-start units.  Some are
   sealed cylindrical metal units, much larger than conventional
   axial-lead electrolytics of similar value (marked: liquid-filled - 
   No PCBs).  The terminals are both at one end, covered with the usual
   little rubber boot. Would these be oil-filled units? Would they 
   be suitable for use in a simple 300VDC, one-tuber cw transmitter power
   supply?  They will fit in my project okay.
   
   The other units are in a bakelite-like plastic cylinder, closed off at
   one end, with terminals at the other.  These are smaller, for the same
   value, than the liquid-filled metal units, but still larger than the
   conventional axial-lead electrolytics of similar value.  These are
   also non-polarized with AC ratings.  Are these electrolytic units,
   with two polarized caps in series-opposing connection inside?  If
   so, are these caps unsuitable for filtering pulsating DC in a power
   supply, because 1/2 of each unit would be continuously reverse-
   polarized?

   I'm sure that someone out there has figured all this out before.
   I would very much appreciate the benefit of your experience.

   Much of the fun for me is in the scrounging.  These caps are much
   cheaper than what is available from the electronics wholesaler here.

   So, will either type work?

   Thanks again for any help.

   Regards,
   Shane Wilcox

   ****************************************** 
  ** Shane <[email-masked]> **              
   ******************************************               
        ** Edmonton, Alberta, Canada **                 
         *****************************       

             

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

Date: Tue, 17 Dec 1996 10:39:31 -0500
From: Roy Morgan <[email-masked]>
To: [email-masked], [email-masked]
Subject: Re: Motor Start Capacitors
Message-ID: <[email-masked]>

At 01:56 AM 12/17/96 -0600, you wrote: 
>
>   I'm scavenging filter capacitors for a 6L6 one-tuber power supply. 

  ...   There are high voltage
>   capacitors which are in the 25 to 50 uF / 350 VAC range.
>
>   The AC rating is because they are motor-start units. 

There's been a lot of talk about motor start caps on one hifi list I get lately.
Here's a summary:

1) motor start capacitors make fine filter caps.

2) some golden eared tube amplifier builders prefer them above all else

3) they will withstand DC of at least 1.4 times the AC rating and last forever

4) they are built of non-polarized film materials

One manufacturer's design engineer is reported to have laughed at the
question "Can I run them in DC filter service at the rated AC voltage?"  He
went on to explain that they are tested at 2 or 2.5 times the ac rating for
some hundreds of hours and that the expected failure rate is less than one
in 100,000 units.

If I were you, I'd buy all I could use, and then have fun!!!

-- Roy Morgan/Building 820, Room 562/Gaithersburg  MD 20899
(National Institute of Standards and Technology,  formerly NBS)
301-975-3254 Fax: 301-948-6213  [email-masked] --

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

Date: Tue, 17 Dec 1996 08:54:51 -0700
From: [email-masked] (Jeff Duntemann)
To: [email-masked]
Cc: [email-masked]
Subject: Re: Motor Start Capacitors
Message-ID: <[email-masked]>

Yikes!  Here I've got a milk jug full of motor start caps and never dared
try them in filter service!

Anyway, what's worth pointing out is that many of the "industrial surplus"
catalogs like C&H Sales (we dicussed them here a month or two ago) sell
motor start caps, even if they don't sell much of anything else of interest
at RF.

Gotta give this a shot.

--73--

--Jeff Duntemann KG7JF
  Scottsdale, Arizona

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

End of GLOWBUGS Digest 385
**************************