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B2_SIF

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ID = 19631
       
Country:
France
Brand: SIF (S.I.F.), Société Indépendante de Télégraphie sans Fil; Paris, Malakoff
Tube type:  Dual-Grid Tetrode   Frequency converter 
Identical to B2_SIF = E441
Similar Tubes
Other base:
  B2_SIF-7pin

Base Europe 5-Pin , B5 + side contact
Was used by Radio/TV-reception etc.
Filament Vf 4 Volts / If 1 Ampere / Indirect / Specified voltage AC/DC

6_14.png B2_SIF: Telefunken Werkstattbuch
Wolfgang Bauer


Just Qvigstad
 

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