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VT188_GPO

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ID = 64593
       
Country:
Great Britain (UK)
Brand: Marconi-Osram - (Valves/Tubes); GB
Developer: Marconi-Osram - (Valves/Tubes); GB 
Tube type:  Vacuum Pentode   Power/Output 
  Ca. 1925 up to 1945 very rare. ***
Identical to VT188_GPO = Z22 = CV1727

Base British-7-Pin, old (M7A) Top contact with a cap.
Was used by Telephony
Filament Vf 2 Volts / If 0.1 Ampere / Direct / Specified voltage AC/DC
Information source -- Collector info (Sammler)   

z22.png VT188_GPO: Fin Stewart
Fin Stewart


Just Qvigstad
 

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