Antique radios, Old Time Radios
R31
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Country:
France
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| Identical to |
R31
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| First year |
1924
Saga of the Vacuum Tube, Tyne page 402
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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 3.5 Volts / If 0.8 Ampere / Direct / Battery = |
| Description |
The brand is Radiotechnique. The name of the tube is Radio-Watt R31.
Text in other
languages (may
differ)
|
Dimensions (WHD)
incl. pins / tip |
52 x 125 x mm / 2.05 x 4.92 x inch |
| Information source |
Taschenbuch zum Röhren-Codex 1948/49
- - Manufacturers Literature 1924
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Just Qvigstad
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R31: Banneitz, TB der drahtl. Teleph. 1927
Anonymous 15 Collector
More ...
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Quantity of Models at Radiomuseum.org with this tube (valve, valves, valvola, valvole, válvula, lampe):1
Collection of
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| Data Compliance |
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