Antique radios, Old Time Radios
DHD
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Country:
Great Britain (UK)
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| Identical to |
DHD
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| First year |
1933
The Saga of Marconi Osram Valve
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| Base |
British-7-Pin, old (M7A) (Codex=Nb)
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| Filament |
Vf 16 Volts / If 0.25 Ampere / Indirect / Specified current DC = (Series working) |
| Information source |
Taschenbuch zum Röhren-Codex 1948/49
- - Manufacturers Literature
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DHD: Telefunken Werkstattbuch
Wolfgang Bauer
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Just Qvigstad
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DHD: Marconi Advertisement
Anonymous 15 Collector
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Collection of
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