radiomuseum.org

199_prototype

Informazioni - Aiuto 
ID = 82009
       
Stato:
USA (Stati Uniti d'America)
Produttore: General Electric Co. (GE); Bridgeport CT, Syracuse NY
Progettista: General Electric Co. (GE); Bridgeport CT, Syracuse NY 
Tipo:  Triodo a vuoto   Audio Frequency 
  <1925 very rare
Identico a 199_prototype
Valvole simili
Sostituita normalmente - piccola diff.:
  199_experimental
Zoccolo Wires Wires only.
Utilizzata per Radio/TV-reception etc.
Filamento Vf 3 Volt / If 0.06 Ampere / Direct / Battery =
Descrizione

The double ended prototype of the (UV)199 was first made at the GE laboratories in December 1921. It followed the earlier experimental 199. This tube differed to the earlier experimental type as it had s .06 amp filament current. Also the lead-in wires were about 3 mm long, made to fit special tube sockets. Two of these tubes are in a prototype rceiver made by GE around the same time. Single ended UV199 tubes were announced at the New York Radio Show in December 1922.  

 
Bibliografia -- Collector info (Sammler)   
- - Manufacturers Literature   The Story of Electronics Development at the GE Co
Utilizzo nei modelli 1= 1921?
Numero totale di modelli di Radiomuseum.org che utilizzano questa valvola:1
 
ge_199_prototype.jpg

 
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