Triode designed for use at frequencies up to about 200 MHz. Manufacturer: Radio Corporation of America, Harrison, NJ, USA. Millions of this type made in World War Two (1939 - 1945). Used mainly in airborne radar, in particular for identification purposes (friend or foe determination (IFF).
6.3 volt indirectly heated cathode.
Miniature tubular bulb with seven pin base with exhaust tip on top.
Type of item
52 mm (Height), 18 mm (Outside Diameter)