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4056B

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ID = 85666
       
Country:
Great Britain (UK)
Brand: Standard Telephones and Cables Ltd. (STC); London, Foots Cray
Tube type:  Transmitting Triode, air cooled   Power/Output 
Identical to 4056B
Similar Tubes
Other base:
  4056A

Base Jumbo 4-pin bayonet (1918)
Was used by Transmittertube (Radio)
Filament Vf 4 Volts / If 1 Ampere / Direct
Information source British Radio Valves - The Classic Years: 1926-1946   p. 212
Babani, International Radio Tube Encyclopaedia   p. 184 & 185


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