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ID = 13839
Brand: Castilla; Madrid
Tube type:  Triode, vacuum   Audio Frequency 
Identical to BF_Castilla = RE074

Base Europe 4-Pin B4 (Eu A, E, 4A) 1914
Was used by Radio/TV-reception etc.
Filament Vf 4 Volts / If 0.06 Ampere / Direct
Information source Röhren-Vademecum; P.H. Brans; Antwerpen   p. 12
Universal Vade-Mecum, Electron Valves and Semiconductor Devices   Section 96, p. 131
Rundf. Empfg. Koch & S. VI 195,
Röhrencodex , Röhren-Taschenbuch 1950 23000 Röhren

bf_so.png BF_Castilla: rtt
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