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ID = 20387
United States of America (USA)
Brand: Common type USA tube/semicond.
Tube type:  Transmitting Triode, air cooled 
Identical to 805 = 331A
Similar Tubes
Normally replaceable-slightly different:
Other class quality (otherwise equal):
  CV625 ; VT-143

Base Top contact with a cap
Filament Vf 10 Volts / If 3.2 Ampere / Direct /
Description High-mu transmitting triode, graphite anode. 125W plate power. Full ratings operation up to 30MHz, up to 120MHz at reduced input; also used as class B modulator. Jombo 4-pin base.
Amperex, GE, National Union, Raytheon, Taylor and Westinghouse known manufacturers. 
Tube prices 2 Tube prices (visible for members only)
Literature Tube Lore, Sibley, USA 1996   
- - Manufacturers Literature   RCA TT-5

  805: rsgb handbook
Michael Schlör
805: K.H.Fischer
Karlheinz Fischer

805: ARRL Handbook 1972
Michael Schlör

805: RCA Technical Manual TT3
Miguel Angel Trujillo-Rodriguez

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