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VT3_GPO

Information - Help 
ID = 62727
       
Country:
Great Britain (UK)
Brand: Osram-Valves GB (not MO-Valves)
Developer: Osram-Valves GB (not MO-Valves) 
Tube type:  Triode, vacuum   Audio Frequency 
  <1925 very rare. ***
Identical to VT3_GPO
Similar Tubes
Normally replaceable-slightly different:
  R_Osram

Base Europe 4-Pin B4 (Eu A, E, 4A) 1914
Was used by Telephony
Filament Vf 4 Volts / If 0.7 Ampere / Direct / Battery =
Information source British Radio Valves - The Vintage Years, Thrower   Pages 82 and 133
 
vt.3.jpg
VT3_GPO: Fin Stewart collection
Fin Stewart

 
b4~~10.png
VT3_GPO: Fin Stewart
Fin Stewart

 

from Just Qvigstad


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