Antique radios, Old Time Radios
RO4320
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Country:
France
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| Identical to |
RO4320
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| Similar
Tubes |
Normally replaceable-slightly different:
B424
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| First Source
(s) |
Sep.1930 : L'Histoire Singulière du Tube Radio; G. Duperray 2009
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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 |
| Information source |
Taschenbuch zum Röhren-Codex 1948/49
-- Original prospect or advert Unsourced ad dated 22nd September 1931
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Just Qvigstad
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