Antique radios, Old Time Radios
281
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Country:
United States of America (USA)
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Brand:
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Common type USA tube/semicond.
Glory; (where?)
Crescent (tubes); (where?)
Crosley Vacuum Products Corp., Cincinnati, Ohio
Everbest Radio Corp.; New York, NY
Kelly Tube Co.; New York, NY
Lafayette Radio & TV Corp; New York (NY)
Leeds Radio Co.; New York City (NY)
McCullough, Frederick, S. Co.; Wilkinsburg, later Sales Company; Pittsburg
Pioneer Engineering Laboratories; Jersey City, NJ
Silvertone (tubes) - see also Sears; Chicago, IL
Sonatron Tube Company; Chicago and New York
Sparton-Cardon Tubes; Jackson MI
Taylor Tubes Inc.; Chicago (IL)
Tung-Sol Electric Inc.; Newark (NJ)
United Tube Co.; Providence, RI
Van Horne Tube Company; Franklin, OH (see also Musselman)
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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 |
281
= 1562_UX4-pin
= AC81
= UX281
= PR281
= X281
= T-81
= G81
= NX-281
= RYB281
= PA281
= MX281
= TC281
= SLX281
= C-281
= SX-281
= TX181
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| Similar
Tubes |
Normally replaceable-slightly different:
G-81
; R281
; R81_USA
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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 1.25 Ampere / Direct / Specified voltage AC/DC |
| Description |
Max. Plate Voltage: 750 V
Max. Plate Current: 110 mA
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Dimensions (WHD)
incl. pins / tip |
x 145 x 60 mm / x 5.71 x 2.36 inch |
| Weight |
63 g / 2.22 oz |
| Tube prices |
1 Tube prices (visible for members
only)
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| Information source |
Tube Lore (II) p. 28, 81 tube
-- Collector info (Sammler)
- - Manufacturers Literature
Taschenbuch zum Röhren-Codex 1948/49
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281: W.Sprick: Austausch-Röhren-Lexikon 1947
Günther Stabe † 19.8.20
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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):69
Collection of
Collection of a member from D |
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