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ID = 3589
United States of America (USA)
Brand: Common type USA tube/semicond.
Developer: Hytron; Salem (MA) 
Tube type:  Vacuum Pentode   Universal 
Identical to 12SJ7GT = CV698
Similar Tubes
Other shape (e.g. bulb type):
  12J7G ; 12SJ7
Heater different:
First Source (s)
01.May.1939 : Electron Tube Registration List
Predecessor Tubes 12J7G   12J7GT  

Base Octal (Int.Octal, IO) K8A, USA 1935 (Codex=Uka)
Was used by Radio/TV-reception etc.
Filament Vf 12.6 Volts / If 0.15 Ampere / Indirect / Specified voltage AND current AC/DC
Tube prices 2 Tube prices (visible for members only)
Information source Essential Characteristics, GE 1973   
Taschenbuch zum Röhren-Codex 1948/49   
12SJ7GT: Collection JR
Jacob Roschy

More ...
12SJ7GT: Datenblatt
Wolfgang Bauer

More ...
12SJ7GT: Sylvania Technical Manual
Peter Hoddow

from Just Qvigstad

Usage in Models 1= 1939 ; 4= 1940 ; 4= 1941 ; 2= 1942?? ; 2= 1942? ; 1= 1942 ; 1= 1945? ; 12= 1946 ; 1= 1956

Quantity of Models at with this tube (valve, valves, valvola, valvole, válvula, lampe):28

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