Antique radios, Old Time Radios
231
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Country:
United States of America (USA)
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| Identical to |
231
= CX331
= ER31
= ER231
= C-231
= NU-31
= NX-231
= 31
= UX231
= 131
= 431
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| First Source
(s) |
1930 : Saga of the Vacuum Tube, Tyne p.329,330
Jun.1930 : Electronics p. 122
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| Base |
UX-Base (4 Pins (2 thick, USA 1924, UX) (Codex=Bo)
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| Was used by |
Radio/TV-reception etc. |
| Filament |
Vf 2 Volts / If 0.13 Ampere / Direct / Battery = |
| Description |
The tube UX230 (230, 30) was announced by RCA in June 1930. This is according to "Saga of the Vacuum Tube" by Tyne, pages 329 & 330. Also announced in "Electronics" in June 1930. In its original form, the 230 has a tubular "T9" bulb. During its commercial life, the bulb shape was changed to S12 and later ST12. Some tubes (such as Silvertone) were made with the ST14 bulb.
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| Tube prices |
1 Tube prices (visible for members
only)
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| Information source |
Taschenbuch zum Röhren-Codex 1948/49
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231: W.Sprick: Austausch-Röhren-Lexikon 1947
Günther Stabe † 19.8.20
More ...
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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):10
Collection of
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