Antique radios, Old Time Radios
B4_BTH
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Country:
Great Britain (UK)
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| Identical to |
B4_BTH
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| First Source
(s) |
1923 : Saga of the Vacuum Tube, Tyne
1923 : British Radio Valves - The Vintage Years: 1904-1925 p.45
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| Base |
Europe 4-Pin B4 (Eu A, E, 4A) 1914
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| Was used by |
Radio/TV-reception etc. |
| Filament |
Vf 6 Volts / If 0.25 Ampere / Direct / Battery = |
| Description |
Va <120. Made at the Mazda Lamp Works.
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| Information source |
- - Manufacturers Literature 1925 Brown Brothers Catalog 217
- - Manufacturers Literature not dated
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B4_BTH: Fin Stewart
Fin Stewart
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Just Qvigstad
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B4_BTH: 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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