They'd probably be fine for the modulators in a class B audio P-P curcuit.
They need a grid bias supply to set them idling OK. And probably a good
dose of negative feedback around the modulator, like Gates and RCA used to
do in their AM Tx's.
Personally I loved the 833's cause they look so strange with no socket. I
bet a lot of hams are going that way for high power AM. Amazing. I just
finished looking at a copy of the latest Electric Radio pub, and
admiring the Heathkit Chippewa with a pair of 4-400's in AB1. Now that's nice.
>I had an industrial amp that used 4 of them John....sold the tubes since
>they are in industrial demand and kept the goodies. Would you consider
>them as modulator tubes? With AM growing that may be an option for ham
My W. T. LaRose Thermall RF heater has one 5868 in TPTG (tuned plate tuned
grid) oscillator arrangement at 90 Mhz or so.
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