Antique radios, Old Time Radios
UX231
| 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 |
Originally made with the T9 (30 mm diameter) glass bulb, this tube was made from early 1931 with the S12 bulb (38 mm diameter) and generally branded type 31 only. A year later the bulb size was changed to ST12. the weight increased by 2 grams. Most US manufacturers still making the tube adopted the changes as a natural progression.
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Dimensions (WHD)
incl. pins / tip |
x 93 x 30 mm / x 3.66 x 1.18 inch |
| Weight |
32 g / 1.13 oz |
| Information source |
Taschenbuch zum Röhren-Codex 1948/49
Saga of the Vacuum Tube, Tyne Page 330
-- Collector info (Sammler)
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UX231: Fin Stewart
Fin Stewart
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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):12
Collection of
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