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RA

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ID = 70719
       
Country:
France
Brand: SFR (S.F.R.) - Société Française Radio-Électrique; Paris
Tube type:  Triode, vacuum 
  <1925 rare.
Identical to RA

Base Europe 4-Pin B4 (Eu A, E, 4A) 1914
Filament Direct / Battery =
Information source

ra.png RA: From my schematic collection.
Pier Antonio Aluffi


Just Qvigstad
ra_data.png
RA: My schematic collection.
Pier Antonio Aluffi

Collection of

 
sfr_radio_expres_1923_nr_34_18_10_1923_pagina_10~~1.png

RA
 

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