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4R1_Ultron

Information - Help 
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 / Parallel, (AC/DC)
Information source Taschenbuch zum Röhren-Codex 1948/49   
 
ultron_4r1.jpg
4R1_Ultron: W.E.
Wolfgang Eckardt

 
4r1_506.gif
4R1_Ultron: Beier, RTB 1953
Wolfgang Eckardt

 

from Just Qvigstad


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