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PCA21

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ID = 77041
       
Country:
Great Britain (UK)
Brand: Marconi-Osram - (Valves/Tubes); GB
Developer: Marconi-Osram - (Valves/Tubes); GB 
Tube type:  Transmitter Pentode, liquid-cooling 
Identical to PCA21

Was used by Transmittertube (Radio)
Filament Vf 20 Volts / If 100 Ampere / Direct / Specified voltage AC/DC
Description

21kW pentode transmitting valve with water cooled anode.

Designed for use for telegraphy and telephony stations.

 
Information source Universal Vade-Mecum, Electron Valves and Semiconductor Devices   1950
The Saga of Marconi Osram Valve   p 189

 

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