Antique radios, Old Time Radios
231D
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Country:
United States of America (USA)
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| Identical to |
231D
= CV2584
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| Similar
Tubes |
Normally replaceable-slightly different:
TB-613-A
Other characteristic (electr. data):
UX-199_code9
; UX199
Other base:
257A
; D-87722
|
| First Source
(s) |
1926 : Saga of the Vacuum Tube, Tyne
|
| Base |
UX-Base (4 Pins (2 thick, USA 1924, UX)
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| Was used by |
Radio/TV-reception etc. |
| Filament |
Vf 3.1 Volts / If 0.06 Ampere / Direct / Battery = |
| Description |
Receiving triode, T8 bulb on four pin base wired like UX-199. Mu = 8.5, Gm 0.38 to 0.56mS. 4000 hours life expectancy; controlled microphonics. Grid and filament spring supported by glass bead from top of plate. Developed for Northern Electric as improved UX-199.
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Dimensions (WHD)
incl. pins / tip |
x 90 x 25 mm / x 3.54 x 0.98 inch |
| Weight |
29 g / 1.02 oz |
| Information source |
Babani, International Radio Tube Encyclopaedia p. 30 & 31
Tube Lore (I)
Tube Lore (II)
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231D: KoBi
Konrad Birkner † 12.08.2014
More ...
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Just Qvigstad
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231D: KoBi
Konrad Birkner † 12.08.2014
More ...
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Quantity of Models at Radiomuseum.org with this tube (valve, valves, valvola, valvole, válvula, lampe):1
Collection of
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