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ID = 22010
Brand: La Radiotechnique (RT); Paris, Suresnes
Tube type:  Triode, vacuum 
  <1925 rare.
Identical to R5 = NR5
First Source (s)
1923 : Saga of the Vacuum Tube, Tyne p407,408

Base Europe 4-Pin B4 (Eu A, E, 4A) 1914
Was used by Radio/TV-reception etc.
Filament Vf 3.8 Volts / If 0.7 Ampere / Direct / Battery =
Dimensions (WHD)
incl. pins / tip
38 x 110 x mm / 1.50 x 4.33 x inch
Information source - - Manufacturers Literature   1924

e4_sockelbild_2.png R5: Eigene Röhren-Vergleichslisten
Felix Schaffhauser

Just Qvigstad
R5: Frank Philipse mit freundl. Genehmigung
Felix Schaffhauser

More ...
Usage in Models 1= 1922 ; 1= 1924 ; 1= 1925?

Quantity of Models at with this tube (valve, valves, valvola, valvole, válvula, lampe):3

Collection of



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