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A4DR

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ID = 13658
       
Country:
Spain
Brand: Castilla; Madrid
Tube type:  Triode, vacuum   Audio Frequency 
Identical to A4DR
Similar Tubes
Normally replaceable-slightly different:
  E499

Base Europe 5-Pin , B5 (Eu O, F, O5A) 1928 (Codex=F)
Was used by Radio/TV-reception etc.
Filament Vf 4 Volts / If 1.2 Ampere / Indirect / Specified voltage AC/DC
Information source Taschenbuch zum Röhren-Codex 1948/49   

7_85.png A4DR: Telefunken Werkstattbuch
Wolfgang Bauer


Just Qvigstad
 

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