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RO4109

Information - Help 
ID = 14756
       
Country:
France
Brand: Visseaux / Télévisso; Lyon / Paris
Tube type:  Triode, vacuum   Detector 
Identical to RO4109
Similar Tubes
Normally replaceable-slightly different:
  A409
First year 1928 Saga of the Vacuum Tube, Tyne page 414
First Source (s)
Jun.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 3.5 Volts / If 0.06 Ampere / Direct / Battery =
Information source Taschenbuch zum Röhren-Codex 1948/49   
 
ro4109.png
RO4109: R.O.
Rudolf Osterkamp

 
ro4109.png
RO4109: Visseaux-Radio Datasheet
David Zeller


from Just Qvigstad


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