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1D

Information - Help 
ID = 28929
       
Country:
United States of America (USA)
Brand: DeForest-Tubes
Tube type:  Transmitting Triode, air cooled 
Identical to 1D
Similar Tubes
Different connections:
  Oscillion_250W
First year 1920 Saga of the Vacuumtube, Tyne page 129, 130
Predecessor Tubes Oscillion_250W  

Base SPECIAL TUBEBASE in general
Filament
Description Basis-Type = Oscillion. Later Model of these Oscillions, designated 1D (250W) 
Text in other languages (may differ)
Literature Saga of the Vacuumtube, Tyne   page 129, 130
 

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