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199_GEM

Information - Help 
ID = 61274
       
Country:
United States of America (USA)
Brand: Common type USA tube/semicond.
Tube type:  Triode, vacuum   Audio Frequency 
  <1925 rare.
Identical to 199_GEM = 199

Base UX-Base (4 Pins (2 thick, USA 1924, UX)
Filament Vf 3 Volts / If 0.06 Ampere / Direct / Battery = /
Description

Made by GEM Tube Co, Broadway, New York.

 
Literature -- Collector info (Sammler)   
Saga of the Vacuumtube, Tyne   

 
uv_199_gem_ridotta.jpg
199_GEM: collezione privata
Davide Casarosa

 


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