Antique radios, Old Time Radios
B520
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Country:
France
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| Identical to |
B520
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| Similar
Tubes |
Normally replaceable-slightly different:
A441N
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| First Source
(s) |
Aug.1930 : Philips Bulletin R1164, p. 23
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| Base |
Europe 4-Pin B4 + side contact (Codex=Eu)
Sidecontact.
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| Was used by |
Radio/TV-reception etc. |
| Filament |
Vf 4 Volts / If 0.08 Ampere / Direct / Battery = |
| Information source |
Röhren-Vademecum; P.H. Brans; Antwerpen p. 14
Universal Vade-Mecum, Electron Valves and Semiconductor Devices Section 149, p. 213
Taschenbuch zum Röhren-Codex 1948/49
Röhrencodex , Röhren-Taschenbuch 1950 23000 Röhren
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B520: Telefunken Werkstattbuch
Wolfgang Bauer
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