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1J

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ID = 28931
       
Country:
United States of America (USA)
Brand: DeForest-Tubes
Developer: DeForest-Tubes 
Tube type:  Transmitting Triode, air cooled   Universal 
Identical to 1J
First year 1920 Saga of the Vacuum Tube, Tyne page 129, 130

Base Pin-and-blade jumbo (3 contacts) Top contact with a cap.
Was used by Transmittertube (Radio)
Filament Direct
Description

Basis-Type = Oscillion. Late Models of these Oscillions 1J (750W)

 
Text in other languages (may differ)
Information source Saga of the Vacuum Tube, Tyne   page 129, 130


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