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ID = 28683
       
Country:
United States of America (USA)
Brand: DeForest-Tubes
Developer: DeForest-Tubes 
Tube type:  High-vacuum Rectifier   Power-supply 
  Ca. 1925 up to 1945 rare.
Identical to PR
First year 1926 ?? Saga of the Vacuumtube, Tyne page 303, 304

Base SPECIAL TUBEBASE in general Top contact with a cap
Was used by Transmittertube (Radio)
Filament Vf 15 Volts / If 9 Ampere / Direct
Description

Corresponding rectifier to the PO. oscillator and PM modulator

 
Text in other languages (may differ)
Literature Saga of the Vacuumtube, Tyne   Pages 303 & 304
 

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