I have installed a single 4-400A in my Swan Mark 1 for
testing. I am running it Zero Bias and Grounded
Grid(it's being used as a triode). It has 2500vdc
plate voltage and a max of about 400ma with 100 watts
of drive. I am curious as to others experiences doing
this with the 4-400A. The plate gets red in SSB and
CW with 100 watts of drive as I expected it should. I
back the drive down but even in SSB the plate still
gets red.
73,
Bill
Resting current is about 40ma. I tested it with about
100 watts of drive
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Bill Smith KO4NR
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