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7R1_Ultron

Information - Help 
ID = 7311
       
Country:
Belgium
Brand: Ultron (tubes)
Tube type:  Half-Wave Vacuum Rectifier   Power-supply 
Identical to 7R1_Ultron = 1562

Base Europe 4-Pin B4 (Eu A, E, 4A) 1914 (Codex=Bo)
Filament Vf 7.5 Volts / If 1.25 Ampere / Direct / Parallel, (AC/DC)
Information source Taschenbuch zum Röhren-Codex 1948/49   
 

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