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VT143_GPO

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ID = 64210
       
Country:
Great Britain (UK)
Brand: Marconi-Osram - (Valves/Tubes); GB
Developer: Marconi-Osram - (Valves/Tubes); GB 
Tube type:  Double Triode   Audio Frequency 
  Ca. 1925 up to 1945 very rare. ***
Identical to VT143_GPO = CV1696 = B21 = CV2864

Base Europe 7-Pin C7A (Hx C, C7, C) 1933
Was used by Telephony
Filament Vf 2 Volts / If 0.2 Ampere / Direct / Specified voltage AND current AC/DC
Description

Class B audio amplifier type twin triode tube with both filaments connected in series.

 
Information source -- Collector info (Sammler)   

gec_b21.png VT143_GPO: Fin Stewart
Fin Stewart


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