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Home Brew CW TX




 
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Author Topic: Home Brew CW TX  (Read 323 times)
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W6TOM
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« on: August 12, 2017, 09:00:45 PM »

  I got this from a friend who told me it works, puts out around 30 watts  and he knows not another things about it. Construction is a work of art, used old style cloth covered wire mostly with a small amount of modern insulated wire, WWII parts.

  Tube line up is two 6AG7 tubes an OA3 which I assume is for the oscillator and the power output tube I believe is WWII vintage and used for VHF, has GRC 825 on it.

   Solid state power supply but old style diodes.

    Here are a few pictures, I wonder when it might have been made??


* Front.JPG (206.38 KB, 1024x558 - viewed 88 times.)

* Inside Top.JPG (140.76 KB, 924x768 - viewed 96 times.)
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W6TOM
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« Reply #1 on: August 12, 2017, 09:01:35 PM »

 More pics


* Inside Bottom.JPG (158.59 KB, 888x768 - viewed 94 times.)

* Power Tube-2.JPG (338.6 KB, 1024x768 - viewed 83 times.)
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W6TOM
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« Reply #2 on: August 12, 2017, 09:02:33 PM »

 a few more pics


* A.JPG (345.54 KB, 1024x768 - viewed 59 times.)

* Meter.JPG (76.74 KB, 785x768 - viewed 31 times.)
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KC4VWU
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« Reply #3 on: August 12, 2017, 10:30:28 PM »

A handbook search might turn something up. Nice construction!
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KA2DZT
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« Reply #4 on: August 12, 2017, 10:47:27 PM »

My guess on the time line, probably late 1950s

Fred
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w4bfs
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« Reply #5 on: August 12, 2017, 10:50:09 PM »

I believe that pa tube is an 832 ... very nice construction

n.b.  could also be an 829 ... hard to tell without a height measure
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Beefus

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to see ourselves as others see us.
It would from many blunders free us.         Robert Burns
WD5JKO
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WD5JKO


« Reply #6 on: August 13, 2017, 09:03:23 AM »

My guess on the time line, probably late 1950s
Fred

  Beautifully made, but look at that solid state rectifier stack next to the RF tank coil. Weren't diodes like that more of a 1960's thing? Names like Starkes Tarzanian (spelling?) come to mind.

Jim
Wd5JKO
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Patrick J. / KD5OEI
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« Reply #7 on: August 13, 2017, 10:41:02 PM »

I think I have a few of those tubes and a socket or two if needed but it looks like you got a very nice rig there. That socket is the good VHF push-pull one.
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