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T4B

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ID = 59132
       
Country:
Great Britain (UK)
Brand: Osram-Valves GB (not MO-Valves)
Developer: Osram-Valves GB (not MO-Valves) 
Tube type:  Transmitting Triode, air cooled 
  <1925 rare.
Identical to T4B

Base Wires Wires only.
Was used by Military and/or Government
Filament Vf 17.5 Volts / If 5.2 Ampere / Direct / Specified voltage AC/DC
Description

450 watt transmitting tube - first made 1919. British Navy version NT4B

 
Dimensions (WHD)
incl. pins / tip
175 x 330 x mm / 6.89 x 12.99 x inch
Information source British Radio Valves - The Vintage Years: 1904-1925   Pages 128 & 130

 

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