I get a very clean note with modern crystals using a 6AH6 as a Colpitts oscillator. With 150 volts regulated on the screen and 250 on the plate, it easily drives a 5763. The filament draws 0.45 Amps.
Originally Posted by AB9LZ
Last edited by W4HAY; 06-03-2012 at 09:55 PM.
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