Antique radios, Old Time Radios
MF
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Country:
France
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| Identical to |
MF
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| Similar
Tubes |
Normally replaceable-slightly different:
B438
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| First Source
(s) |
1925 : Saga of the Vacuum Tube, Tyne p.302
Aug.1930 : Philips Bulletin R1164, p. 34
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| Base |
Europe 4-Pin B4 (Eu A, E, 4A) 1914 (Codex=Eo)
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| Was used by |
Radio/TV-reception etc. |
| Filament |
Vf 4 Volts / If 0.1 Ampere / Direct / Battery = |
| Description |
For resistance-coupled RF and AF stages.
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| Information source |
Röhren-Vademecum; P.H. Brans; Antwerpen p. 49
Universal Vade-Mecum, Electron Valves and Semiconductor Devices Section 98, p. 132
Taschenbuch zum Röhren-Codex 1948/49
Röhrencodex , Röhren-Taschenbuch 1950 23000 Röhren
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MF: Fin Stewart
Fin Stewart
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Just Qvigstad
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