Antique radios, Old Time Radios
HF-4v
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Country:
Great Britain (UK)
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| Identical to |
HF-4v
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| First Source
(s) |
1928 : Wireless World (The), London (WW, 79) August 29, 1928
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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 |
| Description |
This tube used as a detector or as a Radio frequency type.
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| Information source |
British Radio Valves - The Classic Years: 1926-1946 Supplement, p. 67
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HF-4v: Fin Stewart
Fin Stewart
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Just Qvigstad
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| Data Compliance |
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