Bruce, You can add more cathode bias to accomplish this. Just keep in mind
that as you increase the bias voltage more rf drive will be needed to reach a
given plate current and power output level.
Some of the Ameritron amplifiers have a front panel switch marked SSB/CW
that does exactly what you are asking about.
73,
Gerald K5GW
In a message dated 2/16/2006 6:23:10 P.M. Central Standard Time,
n5six@bellsouth.net writes:
Is it possible and/or feasible to put a grounded grid linear into Class
C? Reason I ask is my old Tempo/Henry 6n2 is used almost exclusively
for WSJT modes and they all do fine on Class C since they send single,
sequential tones. Amp is configured as push-pull on 2m and parallel on
6m. Current biasing arrangement is single 10v, 50w zener in cathode
circuit. I would think the efficiency would be much better in class C
if that is possible and would seem to help the 3CX400A7/8874's along.
Searches and old handbooks haven't been much help. Plenty of info out
there on tetrodes and biasing but not gg triodes.
Thanks - Bruce, N5SIX
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