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ID = 48935
Brand: La Radiotechnique (RT); Paris, Suresnes
Tube type:  Space Charge Tetrode 
  Ca. 1925 up to 1945 rare.
Identical to R43S

Base Europe B5+1Pin (seldom, Eu U)
Was used by Radio/TV-reception etc.
Filament Vf 3.5 Volts / If 0.07 Ampere / Direct / Battery =

The brand is Radiotechnique. The name of the tube Micro-Bigril R43s. Used as detector and HF and LF amplification.

Dimensions (WHD)
incl. pins / tip
38 x 100 x mm / 1.50 x 3.94 x inch
Information source - - Manufacturers Literature   1925
R43S: own collection
Peter den Boer

R43S: own collection
Peter den Boer

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