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CV1642

Information - Help 
ID = 30690
       
Country:
Great Britain (UK)
Brand: MO Valve Co. Ltd.; GB
Developer: Marconi-Osram - (Valves/Tubes); GB 
Tube type:  Triode, vacuum   Universal 
  Ca. 1925 up to 1945 rare.
Identical to CV1642 = DER = VT33_GPO

Base Europe 4-Pin B4 (Eu A, E, 4A) 1914
Was used by Telephony
Filament Vf 1.8 Volts / If 0.35 Ampere / Direct / Specified voltage AC/DC
Description

The CV1642 was used by the British Post Office in repeaters to maintain early equipment using the DER.

 
Information source Babani, International Radio Tube Encyclopaedia   
Taschenbuch zum Röhren-Codex 1948/49   
British Radio Valves - The Vintage Years, Thrower
 

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