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Re: [Amps] Two questioins about tetrode amplifiers.

To: amps@contesting.com
Subject: Re: [Amps] Two questioins about tetrode amplifiers.
From: "Mike McCarthy, W1NR via Amps" <amps@contesting.com>
Reply-to: "Mike McCarthy, W1NR" <lists@w1nr.net>
Date: Thu, 31 Oct 2024 06:38:26 -0400
List-post: <mailto:amps@contesting.com>

so I tried removing it from the socket and replacing
it with a 2500ohm non inductive resistor then I tried to probe the output
port. I think this didn't show me the correct values.


Wrong method. You replace the tube with a mica capacitor simulating the output capacitance of the tube. Then you can adjust the tank tap positions using a dip meter.

I think you really need to read up on power amplifier design. One of the best books is Radio Handbook by William Orr, W6SAI (SK). It is out of print but usually available on eB... I think the 23'rd edition was the last and latest.

--
73 de Mike, W1NR

THAT was the equation. EXISTENCE!... SURVIVAL... must cancel out... programming!

- Ruk -


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