5639, NATIONAL, CK5639, CV2662
5639, NATIONAL, CK5639, CV2662
Amperex 6939 high gain twin tetrode for use as a Class C amplifier, oscillator, frequency multiplier and modulator. 12.6v filament.
5639, NATIONAL, CK5639, CV2662
Amperex 6939 high gain twin tetrode for use as a Class C amplifier, oscillator, frequency multiplier and modulator. 12.6v filament.