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RO4181

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ID = 12936
       
Country:
France
Brand: Visseaux / Télévisso; Lyon / Paris
Tube type:  Screen-grid Tetrode   RF/IF-Stage 
Identical to RO4181
Similar Tubes
Normally replaceable-slightly different:
  A441N
First Source (s)
Sep.1932 : L'Histoire Singulière du Tube Radio; G. Duperray 2009

Base Europe 4-Pin B4 (Eu A, E, 4A) 1914 (Codex=Eu)
Was used by Radio/TV-reception etc.
Filament Vf 4 Volts / If 0.08 Ampere
Literature Taschenbuch zum Röhren-Codex 1948/49   
 
ro4181.png
RO4181: Visseaux-Radio Datasheet
David Zeller


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