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VT122_GPO

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ID = 65370
       
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:  Dual-Grid Tetrode   Audio Frequency 
  Ca. 1925 up to 1945 very rare. ***
Identical to VT122_GPO = CV244 = 4046A
Similar Tubes
Normally replaceable-slightly different:
  5A/128B

Base Europe 5-Pin , B5 (Eu O, F, O5A) 1928 Top contact with a cap.
Was used by Telephony
Filament Vf 4 Volts / If 1 Ampere / Indirect / Specified voltage AND current AC/DC
Information source -- Collector info (Sammler)   
 
e442.png
VT122_GPO: Fin Stewart
Fin Stewart

 

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