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ID = 50038
Brand: Dario (tubes) - voir aussi La Radiotechnique
Developer: Dario (tubes) - voir aussi La Radiotechnique 
Tube type:  Double Triode   Detector 
  Ca. 1925 up to 1945 rare.
Identical to RT56
Similar Tubes
Other base and other heater:
  RT656 ; RT656_6pin ; UX201A

Base Europe 4-Pin B4 (Eu A, E, 4A) 1914
Was used by Radio/TV-reception etc.
Filament Vf 5 Volts / If 0.25 Ampere / Direct / Battery =
Description Both triode units are internally connected and act as one triode. 
Dimensions (WHD)
incl. pins / tip
50 x 120 x 37 mm / 1.97 x 4.72 x 1.46 inch
Weight 53 g / 1.87 oz

Just Qvigstad
RT56: Radiotechnique
Patrice Zeissloff

More ...
Usage in Models 1= 1928 ; 1= 1929

Quantity of Models at with this tube (valve, valves, valvola, valvole, válvula, lampe):2

Collection of



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