Plate current measurement
The only thing you won't be able to do is to measure the plate input power of
the transmitter, which for your application isn't a requirement.
My only concern is that tuning for the minimum cathode current may not be as
sharp as tuning for the minimum plate current, because when plate current
decreases the screen current increases (though only about 1/10 in magnitude).
73
Tony I0JX
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