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ID = 3216
United States of America (USA)
Brand: Common type USA tube/semicond.
Tube type:  HalfWave Rectifier-BeamPowerTetrode 
Identical to 117L7GT = 117L7 = CV2556
Similar Tubes
Normally replaceable-slightly different:
  117L7/M7GT ; 117M7GT
Different connections:
First Source (s)
25.Sep.1939 : Electron Tube Registration List

Base Octal (Int.Octal, IO) K8A, USA 1935
Filament Vf 117 Volts / If 0.09 Ampere / Indirect / Specified current AC/DC ~ = (Series working)
Tube prices 1 Tube prices (visible for members only)
Information source Taschenbuch zum Röhren-Codex 1948/49   

117L7GT: Courtesy Bureau Belper (De Muiderkring, Bussum), Scan Frank Philipse
Karel De Reus †

117m7gt_so~~4.png 117L7GT: RCA Reference Book 1968
Anonymous 10 Collector

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Just Qvigstad
Usage in Models 2= 1939? ; 6= 1939 ; 1= 1940?? ; 3= 1940? ; 12= 1940

Quantity of Models at with this tube (valve, valves, valvola, valvole, válvula, lampe):24

Collection of



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