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RO4404

Information - Help 
ID = 16330
       
Country:
France
Brand: Visseaux / Télévisso; Lyon / Paris
Tube type:  Triode, vacuum   Power/Output 
Identical to RO4404 = D404
First Source (s)
Sep.1931 : 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 0.6 Ampere / Direct / Parallel, (AC/DC)
Information source Taschenbuch zum Röhren-Codex 1948/49   
 
ro4404_26_rm438s.jpg
RO4404: Collection JR
Jacob Roschy

 

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