I bread boarded a little amp while exploring the 'sputnick' tube. With 9 volts B+ and 1.2 meg ohm load resistor and it performed well. Still playing with those tubes. They are good prospects for hobbiest.
I'm using a 1.5 volt cell with 16 ohms in series with the filament and a 9 volt B+. This is the power hungry tube in the series. The out put stage in the transceiver.
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