SHARP CUTOFF PENTODE
The 12BY7, 12BY7A, 12BV7 and 12DQ7 are all the same.
They are a miniature type used as a video amplifier in
TV receivers. They are used in Harmonic Distortion
Meters, Oscilloscopes and Monitorscopes. They are also
used quite extensively in Short Wave radios.
They require a miniature 9-contact socket.
Electrical Data:
Heater Voltage .......................... 6.3/12.6 V
Heater Current ........................... 0.6/0.3 A
Preferred Substitutes .......... 12BY7, 12BY7A,
12BV7, 12DQ7, M3644
Substitutes ........................... 12GN7