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4B6_Ultron

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ID = 12333
       
Country:
Belgium
Brand: Ultron (tubes)
Tube type:  Screen-grid Tetrode   RF/IF-Stage 
Identical to 4B6_Ultron
Similar Tubes
Normally replaceable-slightly different:
  A442 ; B443

Base Europe 4-Pin (A, 4A, B4, since 1914) (Codex=Er)
Was used by Radio/TV-reception etc.
Filament Vf 4 Volts / If 0.1 Ampere / Direct / Battery = /
Literature Taschenbuch zum Röhren-Codex 1948/49   
 

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