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12K8 Info
Country:  United States of America (USA)      Brand:  Common type USA 
  Tube type:  Triode-Hexode   Frequency converter   Controlling (mu) 
Tube ID = 2632
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Identical to 12K8
Similar Tubes 6K8 (Heater different)   12K8GT (other shape (e.g. bulb, size))   12K8Y (other class quality (otherw. equal))  
First Source (s) 16.Oct.1939 : Electron Tube Registration List
Predecessor Tubes 12A8G  
Successor Tubes 12SA7   14S7  

Base Octal (Int.Octal, IO) K8A, USA 1935 (Codex=Ue)
Was used by Radio/TV-reception etc.
Filament -: Indirect / -: Parallel / series AC/DC / If: 0.15 Ampere / Vf 12.6 Volts /
Tube prices 0 Tube prices (visible for members only)
Literature Essential Characteristics, GE 1973   
Taschenbuch zum Röhren-Codex 1948/49   

  12k8.gif
  Courtesy Bureau Belper (De Muiderkring, Bussum), Scan Frank Philipse
Karel De Reus
12k8_r.jpg
collection JR
Jacob Roschy

 
12k8.png
Lorenz Empfänger-Röhren , 9. Auflage
Michael Sigmund

 
12k8_techdata.png
Original GENERAL ELECTRIC
Josef Pilz

Usage in Models   2= 1939 ; 2= 1940 ; 1= 1941?? ; 1= 1941? ; 1= 1941 ; 1= 1942?? ; 1= 1943?? ; 1= 1944 ; 1= 1945? ; 1= 1945 ; 1= 1946?? ; 1= 1946? ; 2= 1947 ; 2= 1949 ; 2= 1950?? ; 3= 1950? ;
Number of Models with this tube   23
No further Information for

12K8    

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