Mike Sawyer wrote:
Geoff said: So, John has Otis' 833 final in his possession and is going to
replace
the bias transformer, along with re-creating some low-voltage for
regular firingNever fear, gentlemen(*), if -anyone- on this planet knows
that rig as
well as Otis does, it's a spunky, you
Dave, contact Jeff K3DUA at his store, G&G Electronics. He has boxes fo tube
sockets that my guess fits what you want. He is at 301-258-7373 during the
day Monday thru Wednesday. He is a god friend and has a great surplus store
of electronic parts and some tubes at reasonable prices. You may have
Geoff said: So, John has Otis' 833 final in his possession and is going to
replace
the bias transformer, along with re-creating some low-voltage for
regular firingNever fear, gentlemen(*), if -anyone- on this planet knows
that rig as
well as Otis does, it's a spunky, young, "Boraxo Kid", know
sorry, y'all. *sigh* it was a long day.. 260 miles there, visit all
day, and 230 miles back, then back up by 8am to get on the air with the
locals.
So, yes... there were some of us that went to visit "The Ancient One",
one, K5SWK/Otis Nonken in Grangerland, Texas.
Otis has had some probl
Mike Sawyer wrote:
Isn't this essentially the same idea behind the BC-610? It ran a single
250TH and used only one half of the jackbar.
nah, the 610 uses the entire coil. It's basically a push-pull circuit,
with one tube pulled out.
__
Isn't this essentially the same idea behind the BC-610? It ran a single
250TH and used only one half of the jackbar.
Mod-U-Lator,
Mike(y)
W3SLK
- Original Message -
From: "John E. Coleman (ARS WA5BXO)" <[EMAIL PROTECTED]>
To: "'Discussion of AM Radio in the Amateur Service'"
Sent: Sunda
John E. Coleman (ARS WA5BXO) wrote:
Opps, sorry I meant to send that to Geoff, W5OMR
shit happens. I suppose now I'll have to type up something to send to
the list, since, I'm sure, there are going to be some curious people who
wanna know what we were doing at Otis' place, and with his st
Opps, sorry I meant to send that to Geoff, W5OMR
-Original Message-
From: [EMAIL PROTECTED]
[mailto:[EMAIL PROTECTED] On Behalf Of John E. Coleman (ARS
WA5BXO)
Sent: Sunday, June 03, 2007 2:46 PM
To: 'Discussion of AM Radio in the Amateur Service'
Cc: 'Perry Mason'
Subject: [AMRadio] K5SWK
There was no trouble with the receiver. I regret to say that I forgot about
wiring the RF gain control backwards to avoid a bad spot on the control.
Shoot - I can't remember what I've done to my on rig let alone what I did
for Otis. So you have to turn the RF all the way counter clockwise for the
I am looking for several older tube sockets that were of the brown phenolic
type as used in the 30's.
Need both 4 pin and 5 pin. Need not be new.
Building a 1933 Collins 4A transmitter.
Thank you
David Knepper, W3ST/W3CRA
Secretary to the Collins Radio Association
www.collinsra.com
Publish
Tom I am attaching a schematic diagram mailing direct to you, of a typical
circuit hope it helps.
This circuit is the same as a push-pull version but with one tube and one
neutralizing capacity taken out for single-ended operation.
See Push Pull Triodes in Class C at
http://www.qsl.net/wa5bxo/pp
Tom wrote:
Hello, I recently inherited a HB transmitter
The final amplifier tube is a single 304TH
John E. Coleman (ARS WA5BXO) wrote:
Tom
Does this rig use a plug in coil assembly on a large ceramic jack
bar? And is the coil connected to the plate of the tube or is it connected
John, it is connected on a large ceramic jack bar directly to the tube
plate. I was looking for a schematic to reference so I could determine the
values. The unit in question appears in ER#57 page #16 at the top.
Thank You
Thomas Elmore
Anchorage, Alaska
-Original Message-
From: [EMAIL P
Tom
Does this rig use a plug in coil assembly on a large ceramic jack
bar? And is the coil connected to the plate of the tube or is it connected
through a coupling capacitor to the plate.
There or only a few ways to wire an output link coupled rig with a single
tube (not Push pull).
Are
Hello,
Does anyone possibly have an extra RF section/deck for the 150B setting around?
The original RF section was missing but I do have both of the supply and
modulator decks, large coil set and the matching Signal Shifter with coil set.
No Cabinet either but that is OK as the decks fit nic
Hello, I recently inherited a HB transmitter from my good friend Bob KL7HDY
who became a SK two months ago. Bob built this transmitter back in the late
1950's in a 6 foot rack enclosure. I am trying to determine if he built this
based upon any popular designs of the day since I do not have a schema
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