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4B7_Ultron

Information - Help 
ID = 12334
       
Country:
Belgium
Brand: Ultron (tubes)
Tube type:  Space Charge Tetrode 
Identical to 4B7_Ultron
Similar Tubes
Normally replaceable-slightly different:
  A441N

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 / Direct / Battery =
Information source Taschenbuch zum Röhren-Codex 1948/49   
 

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