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A4A

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ID = 12493
       
Country:
Spain
Brand: Castilla; Madrid
Tube type:  Screen-grid Tetrode   Controlling (mu) 
Identical to A4A

Base Europe 5-Pin , B5 (Eu O, F, O5A) 1928 (Codex=Fc)
Filament Vf 4 Volts / If 1 Ampere
Information source Taschenbuch zum Röhren-Codex 1948/49   

9_50.png A4A: Telefunken Werkstattbuch
Wolfgang Bauer


Just Qvigstad
 

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