The UV-812 is a 250 watt tetrode that is usable up to 18 MHz at full rating. Made for the Japanese military in WWII by Tokyo Electric (Toshiba). It was used as the final amplifier in the Model TM Short Wave Mobile Wireless Set used by the Japanese Army. The Model 94, Type 1, as seen below, also used the UV-812.

Length = 12.50" Diameter = 8.00" (less leads)
Max voltage = 2250
Max current = 235 ma
Fil voltage = 10
Fil current = 6 amps         GOTO INDEX