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ID = 13076
Brand: Dario (tubes) - voir aussi La Radiotechnique
Tube type:  Dual-Grid Tetrode   Frequency converter 
Identical to TA31
Similar Tubes
Normally replaceable-slightly different:
  A441N_5pin ; DG407/0 ; DZ1 ; MX40_Fotos ; R43M ; RO4141

Base Europe "B5 big size" (D, Bigrille) (Codex=Fy)
Filament Vf 4 Volts / If 0.07 Ampere / Direct / Battery =
Description Mit Bigrille-Sockel hauptsächlich in Französischen Radios der 20er Jahre zu finden. 
Information source Taschenbuch zum Röhren-Codex 1948/49   
  TA31: DRB 55
Wolfgang Holtmann
TA31: Meine Sammlung
Rudolf Osterkamp

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TA31: W.Holtmann
Wolfgang Holtmann

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Collection of a member from D

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