The 3C24 is a transmitting tube developed for Class B audio amplifier or modulator use or for Class C RF amplifier or oscillator service.

It is a directly heated triode with thoriated tungsten filament on an UX4 4 pin base. Only the two larger diameter base pins are used for the filament connection. The grid is brought out of the side of the tube and the plate on top. This provides good high voltage insulation for the max plate voltage of 2kV. The filament operates at 6.3V and consumes 3A. The tube is rather small for a transmitting tube with an overall height of about 11cm including base and top pins and only 6cm height of the glass bulb and 3.5cm diameter.

RETURNS ARE NOT ACCEPTED BECAUSE YOUR TESTER SAYS SOMETHING DIFFERENT THAN MINE. If you don?t like the sound of a tube, so long as it is still in the same condition as arrived message me and I?ll work with you