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3A/107A

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ID = 28201
       
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   Audio Frequency 
  Ca. 1925 up to 1945 very rare. ***
Identical to 3A/107A = CV249
Similar Tubes
Other shape (e.g. bulb type):
  VT72_GPO

Base Europe 4-Pin B4 (Eu A, E, 4A) 1914
Filament Vf 4 Volts / If 0.25 Ampere / Direct / Specified voltage AC/DC
Information source Babani, International Radio Tube Encyclopaedia   
-- Original-techn. papers.   
Universal Vade-Mecum, Electron Valves and Semiconductor Devices


Just Qvigstad

Collection of

Collection of a member from FIN
 
gb_stc_3a107a.jpg

3A/107A
 

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