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ID = 17860
United States of America (USA)
Tube type:  Transmitting Triode, air cooled   Power/Output 
Identical to VT-4C = CV2576 = 211-Spl
Similar Tubes
Normally replaceable-slightly different:

Was used by Military and/or Government
Filament Vf 10 Volts / If 3.2 Ampere / Direct
Description Convection cooled 75 Watt anode dissipation; thoriated-tungsten filament. Mu 12. Uses include AF power amplifiers or modulators, class B RF amplifiers, class C RF amplifiers or oscillators. 4-pin jumbo base. 
Tube prices 1 Tube prices (visible for members only)
Information source Taschenbuch zum Röhren-Codex 1948/49   
Tube Lore (I)   
  VT-4C: TO 08-10-139
Götz Linss
VT-4C: TreLe
Trev Levick

More ...
VT-4C: ARRL Handbook 1972
Michael Schlör

VT-4C: internet
Giovanni Mura

Usage in Models 2= 1942?? ; 1= 1947?? ; 1= 1951?

Quantity of Models at with this tube (valve, valves, valvola, valvole, válvula, lampe):4

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