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ID = 51658
Brand: Thermion; Netherlands
Tube type:  Triode, vacuum   Power/Output 
  Ca. 1925 up to 1945 rare.
Identical to 75-1000
Similar Tubes
Normally replaceable-slightly different:
  MC1/50 ; OP70/1000 ; T1060
First Source (s)
22.Nov.1935 : Wireless World (The), London (WW, 79)
Production stop Feb.1938

Base Jumbo 4-pin bayonet (1918)
Was used by Transmittertube (Radio)
Filament Vf 10 Volts / If 1.5 Ampere / Direct / Specified voltage AC/DC

This is a tube from the Thermion Technica series of power amplifiers and power rectifiers.

Information source - - Manufacturers Literature   1-9-1935

mc150_sock~~3.png 75-1000: Valvo,Senderöhren, 1983
Anonymous 15 Collector

Just Qvigstad
75-1000: own collection
Peter den Boer

Collection of



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