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2955

Informazioni - Aiuto 
ID = 67869
       
Stato:
USA (Stati Uniti d'America)
Produttore: WLS (tubes), World's Largest Store - see also Sears, Roebuck & Co; Chicago, IL
Progettista: General Electric Co. (GE); Bridgeport CT, Syracuse NY 
Tipo:  Triodo a vuoto   Audio Frequency 
  <1925 very rare
Identico a 2955 = 2970 = 2956 = UV201A = C301A
Zoccolo UV-Base (4 Pins+Bayonet, USA 1914 WE)
Utilizzata per Radio/TV-reception etc.
Filamento Vf 5 Volt / If 0.25 Ampere / Direct / Battery =
Descrizione

The American company Sears Roebuck, with its head office in Chicago sold the standard range of American designed and made tubes from 1925. A few small manufacturers made these tubes and they were branded "WLS" (Worlds Largest Store). The company allotted each tube a four digit type number. The company also sold regular branded tubes such as Radiotron, Cunningham, Meteor and Solartron.

Page 552 of the Sears Roebuck 1925 catalog shows the 2955 is a Radiotron UV201A. It has a brass base

 
Bibliografia Sears, Roebuck Catalogs (Silvertone)   1925 Page 552
uv~~79.png 2955: Fin Stewart
Fin Stewart

Just Qvigstad
 
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