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ID = 68292
United States of America (USA)
Brand: WLS (tubes), World's Largest Store - see also Sears, Roebuck & Co; Chicago, IL
Developer: Westinghouse El. & Mfg. Co. - see also Canadian W. 
Tube type:  Triode, vacuum   RF/IF-Stage 
  Ca. 1925 up to 1945 rare.
Identical to 57T226 = WLS526 = 126_Arcturus = UX226 = CX326

Base UX-Base (4 Pins (2 thick, USA 1924, UX)
Was used by Radio/TV-reception etc.
Filament Vf 1.5 Volts / If 1.05 Ampere / Direct / Specified voltage AC/DC

Pages 762 and 763 of the Fall 1929 Sears Roebuck catalog lists Silvertone tubes for the first time, with a totally new type number, for example 57T226 = UX226. Research has not yet provided a manufacturer of these tubes or a locaton of a factory and Tyne's "Saga of the Vacuum Tube" page 362, states "No informantion available") for Silvertone. It is presumed that these tubes were made by the Sonatron Tube Company with addresses in Chicago and also in New York and it is also known that Sonatron acquired three smaller companies in 1929 before they themselves were acquired by National Union in September 1929 (Tyne, page 359). Sivertone tubes continued to be available for some years and boxes with both Sears Roebuck and Silvertone printed on them are relatively common in the US. Sears Roebuck Archives states that the company "ended its association" with Silvertone (radios and or tubes is unceertain) in 1972.

Dimensions (WHD)
incl. pins / tip
x 108 x 45 mm / x 4.25 x 1.77 inch
Weight 47 g / 1.66 oz
Information source Sears, Roebuck Catalogs (Silvertone)   Fall issue 1929, pages 762 and 763
Saga of the Vacuum Tube, Tyne   Pages 359 and 362

uxsockel_11~~28.png 57T226: Fin Stewart
Fin Stewart

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