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4AF

Information - Help 
ID = 13250
       
Country:
Spain
Brand: Castilla; Madrid
Tube type:  Triode, vacuum 
Identical to 4AF
Similar Tubes
Normally replaceable-slightly different:
  A409

Base Europe 4-Pin B4 (Eu A, E, 4A) 1914 (Codex=Eo)
Was used by Radio/TV-reception etc.
Filament Vf 4 Volts / If 0.06 Ampere / Direct / Battery =
Information source Taschenbuch zum Röhren-Codex 1948/49   
 
4_af_4.jpg
4AF: Receptor-Transmisor Ejército Español
Miguel Romera Gómez

 
4af_so.png
4AF: rtt
Michael Schlör

 
4af_spec.png
4AF: Castilla, 1930
Anonymous 15 Collector


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