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VT137_GPO

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ID = 65480
       
Country:
Great Britain (UK)
Brand: Standard Telephones and Cables Ltd. (STC); London, Foots Cray
Developer: Standard Telephones and Cables Ltd. (STC); London, Foots Cray 
Tube type:  Transmitting Triode, air cooled   Power/Output 
  Ca. 1925 up to 1945 very rare. ***
Identical to VT137_GPO = CV1081 = 4052A = 804 = RK20
Base UY-Base, 5 Pins (USA, April 1927) Top contact with a cap.
Was used by Telephony
Filament Vf 7.5 Volts / If 3 Ampere / Direct / Specified voltage AND current AC/DC
Information source -- Collector info (Sammler)   
804_so~~1.png VT137_GPO: Fin Stewart
Fin Stewart

Just Qvigstad
 
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