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Author Topic: Anyone recognize this hamfest purchase?  (Read 1255 times)

KM1H

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Re: Anyone recognize this hamfest purchase?
« Reply #15 on: September 22, 2021, 11:56:52 AM »

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Hard to imagine it takes an 807 just to drive a 4-65 pentode...unless that's an audio tube to modulate the screen grid?

Henry Radio built a ISM TX that had a 6AG7 crystal oscillator driving a 2E26 driving a 4-65A in the 13.560 MHz region. That was one assembly. The 3CX3000A7 was another and the PS another.

I had just the driver and built a PS and modulator for 20-10 AM; the final came with a small Johnson roller inductor. PP 809's provided the audio.

AFIK it is still OTA using a Johnson 122 VFO.

Carl
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