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RO4141

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ID = 12935
       
Country:
France
Brand: Visseaux / Télévisso; Lyon / Paris
Tube type:  Dual-Grid Tetrode   Frequency converter 
Identical to RO4141
Similar Tubes
Normally replaceable-slightly different:
  A441N ; DG407 ; RE074d ; TA31 ; U408D
First Source (s)
Feb.1930 : L'Histoire Singulière du Tube Radio; G. Duperray 2009
Base French Bigrille 5 pin (D) (Codex=Eu)
Was used by Radio/TV-reception etc.
Filament Vf 4 Volts / If 0.08 Ampere / Direct / Battery =
Information source Taschenbuch zum Röhren-Codex 1948/49   
-- Original prospect or advert   Unsourced ad 22nd September 1931
tubeenvdiag_klein_mod_bigr_12.gif
RO4141: DRB 55
Wolfgang Holtmann
tubesockel_klein_bigrillem_3_7.gif RO4141: W.H.
Wolfgang Holtmann
ro4141.png
RO4141: Visseaux-Radio Datasheet
David Zeller
Usage in Models 1= 1928? ; 1= 1929?? ; 1= 1929?
Quantity of Models at Radiomuseum.org with this tube (valve, valves, valvola, valvole, válvula, lampe):3

Collection of

Christian ADAM (F)
Harald Giese (D)
Walter Barteczek (D)
 
ro4141.jpg

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