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RO4320

Information - Help 
ID = 14759
       
Country:
France
Brand: Visseaux / Télévisso; Lyon / Paris
Tube type:  Triode, vacuum 
Identical to RO4320
Similar Tubes
Normally replaceable-slightly different:
  B424
First Source (s)
Sep.1930 : L'Histoire Singulière du Tube Radio; G. Duperray 2009

Base Europe 4-Pin B4 (Eu A, E, 4A) 1914 (Codex=Eo)
Was used by Radio/TV-reception etc.
Filament Vf 4 Volts / If 0.1 Ampere / Direct
Information source Taschenbuch zum Röhren-Codex 1948/49   
-- Original prospect or advert   Unsourced ad dated 22nd September 1931


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