Antique radios, Old Time Radios
281
|
Country:
United States of America (USA)
|
|
Brand:
|
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)
|
| Developer: |
Westinghouse El. & Mfg. Co. - see also Canadian W. |
| Tube type: |
Half-Wave Vacuum Rectifier Power-supply |
|
| Identical to |
281
= 1562_UX4-pin
= AC81
= UX281
= PR281
= X281
= T-81
= G81
= NX-281
= RYB281
= PA281
= MX281
= TC281
= TX181
= SLX281
= C-281
= SX-281
|
| Similar
Tubes |
Normally replaceable-slightly different:
G-81
; R281
; R81_USA
|
|
Successor Tubes
|
SLX281
|
| Base |
UX-Base (4 Pins (2 thick, USA 1924, UX) (Codex=Bo)
|
| 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
|
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)
|
| Information source |
Tube Lore (II) p. 28, 81 tube
-- Collector info (Sammler)
- - Manufacturers Literature
Taschenbuch zum Röhren-Codex 1948/49
|
|
281: W.Sprick: Austausch-Röhren-Lexikon 1947
Günther Stabe † 19.8.20
|
Just Qvigstad
|
|
Quantity of Models at Radiomuseum.org with this tube (valve, valves, valvola, valvole, válvula, lampe):69
Collection of
Collection of a member from D |
|
|
|
You reach this tube or valve page from a search
after clicking the "tubes" tab or by clicking a tube
on a radio model page. You will find thousands
of tubes or valves with interesting links. You
even can look up radio models with a certain tube
line up.
[rmxtube-en]
| Data Compliance |
More Information |
|
|
|
