[AMPS] Recognized Amplifier Experts

[2]

>
>
>> Bingo.  If he had ever experimented with an amplifier that had adjustable
>> filament V. he would know that once RF output reaches normal PEP, there
>> is virtually no further increase in RF output as filament V is increased.
>
>Careing to set the filament voltage to obtain the proper emission, rather
>than only keeping a fixed voltage, should extend the tube life noticeably
>without affecting gain and output power.
>
Set fil. V to the nominal value, tune for max P-out with max drive.   
Decrease fil. V until P-out just begins to drop.  Increase fil. V c. 2%.  
Recheck every 500 or so hours.

cheers, Mauri
ciao

-  R. L. Measures, 805.386.3734,AG6K, www.vcnet.com/measures.  
end


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