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3A/107B

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ID = 33239
       
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:  Triode, vacuum   Power/Output 
  Ca. 1925 up to 1945 rare.
Identical to 3A/107B = CV1655
Similar Tubes
Normally replaceable-slightly different:
  425XP ; VT75_GPO
Base Europe 4-Pin B4 (Eu A, E, 4A) 1914
Was used by Telephony
Filament Vf 4 Volts / If 0.15 Ampere / Direct / Specified voltage AC/DC
Information source Taschenbuch zum Röhren-Codex 1948/49   
Universal Vade-Mecum, Electron Valves and Semiconductor Devices   Page 126 & 127
b4_1~~44.png 3A/107B: Fin Stewart
Fin Stewart

Just Qvigstad

Collection of

Eduard Pavlik (SK)
 
3a107b.jpg

 
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