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7J7 Info
Country:  United States of America (USA)      Brand:  Common type USA 
  Tube type:  Triode-Heptode   Frequency converter 
Tube ID = 2729
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Identical to 7J7 = VT-194
Similar Tubes 6J8G (other base)  
Predecessor Tubes 6J8G   6K8GT  
Successor Tubes 7S7  

Base Loctal-8, B8G (Sylvania, 1938) (Codex=Wfo)
Was used by Radio/TV-reception etc.
Filament -: Indirect / -: Parallel / series AC/DC / If: 0.3 Ampere / Vf 6.3 Volts /
Tube prices 0 Tube prices (visible for members only)
Literature Essential Characteristics, GE 1973   
Taschenbuch zum Röhren-Codex 1948/49   

  7j7.gif
  Courtesy Bureau Belper (De Muiderkring, Bussum), Scan Frank Philipse
Michael Schlör
7j7.jpg
scc
Christian Schaufelberger

 
415_1.png
Telefunken Werkstattbuch
Wolfgang Bauer

 
7j7_techdat01.png
Sylvania Technical Manual
Peter Hoddow

Usage in Models   11= 1939 ; 1= 1940? ; 4= 1940 ; 16= 1941 ; 1= 1942?? ; 2= 1942 ; 1= 1943? ; 2= 1945? ; 1= 1945 ; 1= 1946 ; 3= 1947 ; 9= 1948?? ; 5= 1948 ;
Number of Models with this tube   57
No further Information for

7J7    

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