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4612_WLS

Información - Ayuda 
ID = 67126
       
País:
Estados Unidos
Marca: WLS (tubes), World's Largest Store - see also Sears, Roebuck & Co; Chicago, IL
Diseñador: Westinghouse El. & Mfg. Co. - see also Canadian W. 
Tipo:  Triode, vacuum   Audio Frequency 
  Ca. 1925 up to 1945 rare.
Idéntica a 4612_WLS = D_Amplion = WX12
Base UX-Base (4 Pins (2 thick, USA 1924)
Usada en Radio/TV-reception etc.
Filamento Vf 1.1 Volt / If 0.25 Ampere / Direct / Battery =
Descripción

Page 671 of the Fall 1928 isue of theSears Roebuck catalog announces a new catalog number series for radio tubes, 46XX, replacing the 29XX series. The company sold the standard range of US designed and made tubes and these were made by a small number of manufacturers. THE "WLS" (Worlds Largest Store) brand was either hot branded on the tube base or a paper label on the glass. The 4612_WLS is also shown in the Spring 1929 catalog.

 
Literatura Tube Lore (I)   page 16.
Sears, Roebuck Catalogs (Silvertone)   Page 671, Fall 1928 catalog
uxsockel_11~~20.png 4612_WLS: Fin Stewart
Fin Stewart

Just Qvigstad
 
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