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1C7 Info
Country:  United States of America (USA)      Brand:  Common type USA 
  Tube type:  HEPTODE   Controlling (mu) 
Tube ID = 3949
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Identical to 1C7

Base Octal (Int.Octal, IO) K8A, USA 1935 (Codex=Ut)
Filament If: 0.12 Ampere / Vf 2 Volts /
Literature Taschenbuch zum Röhren-Codex 1948/49   

  1c7.gif
  Courtesy Bureau Belper (De Muiderkring, Bussum), Scan Frank Philipse
Karel De Reus
413_2.png
Telefunken Werkstattbuch
Wolfgang Bauer

 
1c7_spec.png
Grundig Rö-Tabu, zum M1, Band 3, 1948
Anonymous 15 Collector

Usage in Models   3= 1937? ; 4= 1937 ; 1= 1938 ; 1= 1939 ; 2= 1940?? ; 2= 1948 ;
Number of Models with this tube   13
No further Information for

1C7    

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