[Collins] KWM-2A output
Bill Abate
wabate at dandy.net
Sat Mar 12 00:23:23 EST 2005
Thanks for the comments. First, I tried new tubes and the results were
pretty much the same. So the finals being soft is not an answer. The
wattmeter is a Bird so I am pretty confident in that. In any event the
accuracy is 5% od FS, or 12 watts. It is just as likely to be reading
high as low.
But the comments on the cathode resistor did resonate with me. I also
forgot about cathode current vs. plate current. You gave me enough to
suspect so I think I will pull the 2A and check the resistor by inducing
a known current in it. Its not about whether the guy at the other end
will notice the difference. It the fact that I will know its not the
way it should be, if something is wrong.
73,
Bill, K3PGB
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