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R51

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ID = 49490
       
Country:
France
Brand:
Tube type:  Triode, vacuum   Power/Output 
  Ca. 1925 up to 1945 rare.
Identical to R51

Base Europe 4-Pin B4 (Eu A, E, 4A) 1914
Filament Vf 3.5 Volts / If 0.85 Ampere / Direct / Battery =
Description

The brand is Radiotechnique. The name of the tube is Radio-Watt R51.

 

r51_sfr_ebay_p03_culot_s.png R51: Ebay
Patrice Zeissloff


Just Qvigstad
dr36r14r51datasmall.png
R51: own collection
Peter den Boer

 
r51_sfr_ebay_p01_s~~1.jpg

 

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