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4R1_Ultron

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ID = 7254
       
Country:
Belgium
Brand: Ultron (tubes)
Tube type:  Full-Wave Vacuum Rectifier   Power-supply 
Identical to 4R1_Ultron
Similar Tubes
Normally replaceable-slightly different:
  506
Base Europe 4-Pin B4 (Eu A, E, 4A) 1914 (Codex=Eo)
Was used by Radio/TV-reception etc.
Filament Vf 4 Volts / If 1 Ampere / Direct / Specified voltage AC/DC
Information source Taschenbuch zum Röhren-Codex 1948/49   
4r1_506.gif 4R1_Ultron: Beier, RTB 1953
Wolfgang Eckardt

Just Qvigstad

Collection of

Wolfgang Eckardt (D)
 
ultron_4r1.jpg

 
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