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R50

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ID = 14639
       
Country:
France
Brand: La Radiotechnique (RT); Paris, Suresnes
Tube type:  Triode, vacuum 
  Ca. 1925 up to 1945 rare.
Identical to R50
Base Europe 4-Pin B4 (Eu A, E, 4A) 1914 (Codex=Eo)
Filament Vf 3.8 Volts / If 0.1 Ampere / Direct
Description

The brand is Radiotechnique. The full name is Micro-Ampli R50. Used for LF amplification.

 
Dimensions (WHD)
incl. pins / tip		 45 x 110 x mm / 1.77 x 4.33 x inch
Information source Taschenbuch zum Röhren-Codex 1948/49   
- - Manufacturers Literature   1925

Just Qvigstad 		r50data1small.png
R50: own collection
Peter den Boer
More ...
Usage in Models 1= 1925 ; 1= 1926? ; 4= 1926 ; 2= 1927
Quantity of Models at Radiomuseum.org with this tube (valve, valves, valvola, valvole, válvula, lampe):8

Collection of

Peter den Boer (NL)
 
r50tubesmall.jpg

 
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