Antique radios, Old Time Radios
AC/DD
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Country:
Great Britain (UK)
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| Identical to |
AC/DD
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| Similar
Tubes |
Normally replaceable-slightly different:
2D4A
Other base:
AC/DD_7pin
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| First Source
(s) |
1934 : History of the British Radio Valve to 1940 p. 139 & 177
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| Base |
Europe 5-Pin , B5 (Eu O, F, O5A) 1928 (Codex=F)
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| Was used by |
Radio/TV-reception etc. |
| Filament |
Vf 4 Volts / If 1 Ampere / Indirect / Specified voltage AC/DC |
| Description |
Detector and AVC use.
Hivac and Mazda are known brands.
Hivac also produced a 7 pin version.
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| Information source |
Universal Vade-Mecum, Electron Valves and Semiconductor Devices Section 73, p. 100
Babani, International Radio Tube Encyclopaedia p. 46 & 47
Taschenbuch zum Röhren-Codex 1948/49
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AC/DD: Austausch Röhren Lexikon, 1947
Anonymous 10 Collector
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Just Qvigstad
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AC/DD: own collection
Peter den Boer
More ...
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Quantity of Models at Radiomuseum.org with this tube (valve, valves, valvola, valvole, válvula, lampe):2
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