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1679 Info
Country:  United States of America (USA)      Brand:  RCA (RCA Victor Co. Inc.); New York (NY) 
  Developer:  RCA (RCA Victor Co. Inc.); New York (NY) 
  Tube type:  Double Triode 
Tube ID = 25481
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Identical to 1679
Similar Tubes 6J6 (other class quality (otherw. equal))  
First Source (s) 1949 : Tube Lore, Sibley, USA 1996
Production stop   1952
Successor Tubes 1684  

Was used by Technology / Measurement
Filament -: Indirect / -: Parallel, (AC/DC) / If: 0.6 Ampere / Vf 6.3 Volts /
Description Min. Duotriode, 6J6 selected for improved cutoff and high zero-bias plate current, sold only to IBM for computer use. Tubes failing the selection became regular 6J6. Intro. 1949; superseded 1952 by type 1684. Bulbs were to be etched „6J6,“ not „1679“ and branded with „IBM“ and their part nos. 6J3000 and 300703. [Information by L. Sibley] 

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Telefunken Werkstattbuch
Wolfgang Bauer

 
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1679    

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