Antique radios, Old Time Radios
A1_plateless
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Country:
Great Britain (UK)
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| Identical to |
A1_plateless
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| First Source
(s) |
Jun.1924 : British Radio Valves - The Vintage Years: 1904-1925
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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 4 Volts / If 0.58 Ampere / Direct / Battery = |
| Description |
G.W.I. Ltd. Imperial Works, Shanklin Rd., Crouch End, London, N8.
Valve repairers who produced an unusual valve in 1924.
Instead of a cylindrical anode the inner glass surface was silver coated to work as anode. Therefore called "plateless".
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| Information source |
British Radio Valves - The Vintage Years: 1904-1925 pages 4, 32, 116, 138
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