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VT155_GPO

Information - Help 
ID = 65651
       
Country:
United States of America (USA)
Brand: Common type USA tube/semicond.
Tube type:  Vacuum Pentode   RF/IF-Stage 
  Ca. 1925 up to 1945 very rare. ***
Identical to VT155_GPO = 57 = CV1704

Base 6-Pin-Base U6A, old, USA
Was used by Telephony
Filament Vf 2.5 Volts / If 1 Ampere / Indirect / Parallel / series AC/DC
Literature -- Collector info (Sammler)   
 
57_58~~1.png
VT155_GPO: Fin Stewart
Fin Stewart

 

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