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Detector_Fairy

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ID = 49911
       
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_Fairy
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

Vf=3.8-4, If=0.5A, Ri=33000 ohm, S=0.30mA/V max, Is=4 mA, g=10.

 
Information source Radio Wereld, The Netherlands   25-2-1926
b4_base_pins~~618.png Detector_Fairy: Fin Stewart
Fin Stewart

Just Qvigstad
 
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