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ID = 81218
United States of America (USA)
Brand: RCA (RCA Victor Co. Inc.); New York (NY)
Tube type:  Transmitting Tetrode, air cooled   UHF 
Identical to 4631_RCA

Base No base Other combinations of connections.
Was used by Transmittertube (Radio)
Filament Vf 26.5 Volts / If 0.54 Ampere / Half indirect / Parallel, (AC/DC)

"Lighthouse" tetrode for use up to 1215 MHz

80W CW power output at 400Mhz, 40W at 1215MHz

Pa <100W  Va <1000V


Dimensions (WHD)
incl. pins / tip
41 x 58 x mm / 1.61 x 2.28 x inch
Weight 60 g / 2.12 oz
Information source - - Manufacturers Literature   
4631_RCA: My Collection
Bruce Morgenstern


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