Antique radios, Old Time Radios
UX281
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Country:
United States of America (USA)
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Brand:
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Common type USA tube/semicond.
Europa; (where?)
Cymotron サイモトロン (tubes) - see also Tokyo Electric Co. (TEC)
Ampeon Radio Co.; Newark, NJ
Archatron; Owensboro, KY
Arco Tube Company; Newark (NJ)
Champion Radio Works; Danvers, Massachusetts
Kelly Tube Co.; New York, NY
Ken-Rad, The Kentucky Radio Corporation; Owensboro, KY
OK (tubes), S.S. Kresge Co.; Detroit, MI
Paramount Radio Tube Co.; Brooklyn, NY
Vox, Munder Electrical Co.; Springfield, MA
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| Developer: |
Westinghouse El. & Mfg. Co. - see also Canadian W. |
| Tube type: |
Half-Wave Vacuum Rectifier Power-supply |
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| Identical to |
UX281
= CV2546
= PH281
= 481
= CX381
= D1/2
= RE-2
= 181_Arcturus
= PA281
= SLX281
= X281
= AC281
= RayX-281
= MX281
= ER81
= ER281
= 1562_UX4-pin
= T-81
= PR281
= G81
= R81_USA
= NX-281
= RYB281
= TC281
= TX181
= SX-281
= GSX-281
= 57T281
= 81
= C-281
= 281
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| Similar
Tubes |
Other shape (e.g. bulb type):
NU-81
Normally replaceable-slightly different:
38181
; 4619_WLS
; G-81
; PT-281
; R281
; WLS581
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| First year |
1927
Radios von gestern, 2. Auflage
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| First Source
(s) |
May.1927 : Saga of the Vacuum Tube, Tyne p.323 &325
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Successor Tubes
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SLX281
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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 7.5 Volts / If 1.2 Ampere / Direct / Specified voltage AC/DC |
| Description |
Work on this tube started at the Westinghouse laboratories in Bloomfield, New Jersey early in 1927 and it was announced a few months later
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Dimensions (WHD)
incl. pins / tip |
x 158 x 60 mm / x 6.22 x 2.36 inch |
| Weight |
63 g / 2.22 oz |
| Information source |
70 Years of Radiotubes and V. p. 111
Tube Lore (II) p. 28
Taschenbuch zum Röhren-Codex 1948/49
70 Years of Radiotubes and V.
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UX281: ARRL Handbook 1972
Anonymous 10 Collector
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Just Qvigstad
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UX281: RCA Receiving Tube Manual RC-10
Heinz Höger
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Quantity of Models at Radiomuseum.org with this tube (valve, valves, valvola, valvole, válvula, lampe):78
Collection of
Collection of a member from D |
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