My 2K Classic X has separate filament and power transformer and supplies 4Kv on
SSB and 3Kv on CW, that is resting voltage. The power supply has a choke in it
too and the voltage sag on full power is only 200 volts.
It has fixed caps on the plate, a roller inductor, and is a PiL tuned output.
With 3-500ZG matched pair little color shows on low power some color on high
power. The blower is a tad noisy but very tolerable as it supplies ample air.
I put a rheostat on the filament transformer primary as the filament voltage
was on the high side with the 220 volt main I have here closer to 240 volts.
This heavy rheostat brought the filament voltage to the lower limit on the
tubes and should extend life by a long time.
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