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4A11_Ultron

Information - Help 
ID = 9425
       
Country:
Belgium
Brand: Ultron (tubes)
Tube type:  Vacuum Pentode   RF/IF-Stage   Controlling (mu) 
Identical to 4A11_Ultron = E447

Base Europe 5-Pin , B5 (Eu O, F, O5A) 1928 (Codex=Fco)
Was used by Radio/TV-reception etc.
Filament Vf 4 Volts / If 1.1 Ampere / Indirect / Parallel, (AC/DC)
Information source Taschenbuch zum Röhren-Codex 1948/49   
 

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