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A4BF

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ID = 15510
       
Country:
Spain
Brand: Castilla; Madrid
Tube type:  Triode, vacuum   Power/Output 
Identical to A4BF
Similar Tubes
Normally replaceable-slightly different:
  B405

Base Europe 4-Pin B4 (Eu A, E, 4A) 1914 (Codex=Eo)
Was used by Radio/TV-reception etc.
Filament Vf 4 Volts / If 0.15 Ampere / Direct
Information source Röhren-Vademecum; P.H. Brans; Antwerpen   p. 10
Universal Vade-Mecum, Electron Valves and Semiconductor Devices   Section 103, p. 138
Taschenbuch zum Röhren-Codex 1948/49
Röhrencodex , Röhren-Taschenbuch 1950 23000 Röhren

1_149.png A4BF: Telefunken Werkstattbuch
Wolfgang Bauer


Just Qvigstad
a4bf.png
A4BF: MB
Ernst Erb

 

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