Antique radios, Old Time Radios
TH4B
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Country:
Great Britain (UK)
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| Identical to |
TH4B
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| Similar
Tubes |
Other base and other heater:
ECH2
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| First Source
(s) |
1939 : History of the British Radio Valve to 1940
1938 : -- Original-techn. papers.
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| Base |
British-7-Pin, old (M7A) (Codex=Nao)
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| Was used by |
Radio/TV-reception etc. |
| Filament |
Vf 4 Volts / If 1.45 Ampere / Indirect / Specified voltage AC/DC |
| Information source |
Taschenbuch zum Röhren-Codex 1948/49
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TH4B: Tabu Röhren-Codex, 1948
Anonymous 15 Collector
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Just Qvigstad
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Quantity of Models at Radiomuseum.org with this tube (valve, valves, valvola, valvole, válvula, lampe):16
Collection of
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