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Detector_Fama

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ID = 49898
       
Country:
Netherlands
Brand: Frelat N.V.; Amsterdam
Developer: Heussen, M. & Co; Arnhem 
Tube type:  Gas Triode   Detector 
  Ca. 1925 up to 1945 rare.
Identical to Detector_Fama

Base Europe 4-Pin B4 (Eu A, E, 4A) 1914
Was used by Radio/TV-reception etc.
Filament Vf 3.8 Volts / If 0.5 Ampere / Direct / Battery =
Description

Filament 3.8-4 Volt, Anode 20-60 Volt

 
Information source The Wireless Constructor   august 1925
British Radio Valves - The Vintage Years: 1904-1925   p. 123

b4_base_pins~~619.png Detector_Fama: Fin Stewart
Fin Stewart


Just Qvigstad
 

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