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4GAF

Information - Help 
ID = 12340
       
Country:
Spain
Brand: Castilla; Madrid
Tube type:  Screen-grid Tetrode 
Identical to 4GAF
Similar Tubes
Normally replaceable-slightly different:
  B442

Base Europe 4-Pin B4 (Eu A, E, 4A) 1914 (Codex=Er)
Filament Vf 4 Volts / If 0.1 Ampere
Information source Taschenbuch zum Röhren-Codex 1948/49   
 
4gaf_so.png
4GAF: rtt
Michael Schlör

 
4gaf_spec.png
4GAF: Castilla 1930
Anonymous 15 Collector


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