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ID = 28682
       
Country:
United States of America (USA)
Brand: DeForest-Tubes
Developer: DeForest-Tubes 
Tube type:  Transmitting Triode, air cooled   Power/Output 
  Ca. 1925 up to 1945 rare.
Identical to PO
First year 1926 ?? Saga of the Vacuum Tube, Tyne page 302, 304

Base SPECIAL TUBEBASE in general Top contact with a cap.
Was used by Transmittertube (Radio)
Filament Vf 15 Volts / If 6 Ampere / Direct / Specified voltage AC/DC
Description

500 Watts input, 250 Watts output. Also called P. Corresponding modulator PM and rectifier PR.

 
Text in other languages (may differ)
Tube prices 1 Tube prices (visible for members only)
Information source Saga of the Vacuum Tube, Tyne   Pages 302 & 304

 

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