Antique radios, Old Time Radios
L12
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Country:
Great Britain (UK)
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| Identical to |
L12
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| First Source
(s) |
1938 : - - Manufacturers Literature
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| Base |
SPECIAL TUBEBASE in general (Codex=sp)
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| Was used by |
Radio/TV-reception etc. |
| Filament |
Vf 2 Volts / If 0.06 Ampere / Direct |
| Description |
Miniature tube first made in 1938. For use in hearing aids and small portable radios.
Low Impedance triode. Gm=0.8mA/V Amp Factor=4.8.
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Dimensions (WHD)
incl. pins / tip |
x 33 x 18 mm / x 1.30 x 0.71 inch |
| Information source |
The Saga of Marconi Osram Valve p. 249 & 250, 338
History of the British Radio Valve to 1940 p. 140 & 205
- - Manufacturers Literature
Taschenbuch zum Röhren-Codex 1948/49
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L12: Röhrentaschenbuch VT 1962
Jörg Kulbe
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L12: MARCONI RECEIVING VALVES, LONDON, 1938
Jose Casas-Avalos
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