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CV1653

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ID = 59254
       
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 CV1653 = 3A/108A = VT73A_GPO

Base UV-Base (4 Pins+Bayonet, USA 1914 WE)
Was used by Telephony
Filament Vf 2 Volts / If 0.25 Ampere / Direct / Specified voltage AC/DC
Description

High Impedance triode

Ra, 50,000 ohms ; Gm 0.6 mA/V

 
Information source Babani, International Radio Tube Encyclopaedia   Pages 76 & 77
-- Original-techn. papers.   


Just Qvigstad

Collection of

Collection of a member from FIN
 
cv1653_stc.jpg

 

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