Antique radios, Old Time Radios
X21
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Country:
Great Britain (UK)
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| Identical to |
X21
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| First Source
(s) |
22.Nov.1935 : Wireless World (The), London (WW, 79)
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| Base |
British-7-Pin, old (M7A) (Codex=Nto)
Top contact with a cap.
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| Was used by |
Radio/TV-reception etc. |
| Filament |
Vf 2 Volts / If 0.1 Ampere / Direct / Battery = |
| Description |
Grid from top cap.
|
| Information source |
The Saga of Marconi Osram Valve p. 335
History of the British Radio Valve to 1940 p. 148 & 198
Babani, International Radio Tube Encyclopaedia
Taschenbuch zum Röhren-Codex 1948/49
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X21: Osram Valves, Radio season 1936-1937
Dirk Bladt
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X21: Tabu Röhren-Codex, 1948
Anonymous 15 Collector
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Just Qvigstad
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X21: Osram Valves, Radio season 1936-1937
Dirk Bladt
More ...
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Quantity of Models at Radiomuseum.org with this tube (valve, valves, valvola, valvole, válvula, lampe):15
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