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ID = 77307
Great Britain (UK)
Brand: Marconi-Osram - (Valves/Tubes); GB
Developer: MO Valve Co. Ltd.; GB 
Tube type:  Triode, vacuum   UHF 
  <1925 no serial production. For instance only development samples. *****
Identical to E1769
Similar Tubes
Normally replaceable-slightly different:
Successor Tubes DET24  

Base COAXIAL in general (X..)
Was used by Transmittertube (Radio)
Filament Vf 6.3 Volts / If 1 Ampere / Half indirect / Specified voltage AC/DC

Experimental prototype of the DET24 - an uprated DET22. Developed at the Hirst Research Centre of GEC.

UHF planar triode capable of operating up to 2GKz. 400V max anode voltage, 600mA peak current, 20W max anode dissipation, mu 28. As common grid UHF oscillator DET24 can deliver up to 14W at 600MHz, out power decreasing for higher frequencies.

Information source The Saga of Marconi Osram Valve   p. 340


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