[Amps] Two questioins about tetrode amplifiers.

[Mike McCarthy, W1NR]

> 
>> 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 -