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12SG7

Information - Help 
ID = 2636
       
Country:
United States of America (USA)
Brand:
Tube type:  Vacuum Pentode   RF/IF-Stage   Controlling (mu) 
Identical to 12SG7 = VT-209 = CV694
Similar Tubes
Other shape (e.g. bulb type):
  12SG7GT
Other class quality (otherwise equal):
  12SG7Y
Heater different:
  6SG7
Other base:
  14H7
First Source (s)
17.Feb.1941 : Electron Tube Registration List
Successor Tubes 12BA6  

Base Octal (Int.Octal, IO) K8A, USA 1935 (Codex=Uko)
Was used by Radio/TV-reception etc.
Filament Vf 12.6 Volts / If 0.15 Ampere / Indirect / Parallel / series AC/DC
Tube prices 4 Tube prices (visible for members only)
Literature Taschenbuch zum Röhren-Codex 1948/49   
  12sg7.png
  12SG7: Courtesy Bureau Belper (De Muiderkring, Bussum), Scan Frank Philipse
Karel De Reus †
 
12sc7~~2.jpg
12SG7: Sammlung PR
Peter Roggenhofer † 25.4.18

 
12sg7_so.png
12SG7: RCA Reference Book 1968
Michael Schlör

 
12sg7_techdata.png
12SG7: Original GENERAL ELECTRIC
Josef Pilz


Usage in Models 2= 1939? ; 1= 1940?? ; 7= 1941 ; 3= 1942?? ; 1= 1942? ; 1= 1942 ; 2= 1943? ; 1= 1944? ; 2= 1944 ; 1= 1945? ; 11= 1945 ; 7= 1946? ; 55= 1946 ; 3= 1947?? ; 5= 1947? ; 24= 1947 ; 1= 1948?? ; 6= 1948? ; 26= 1948 ; 4= 1949?? ; 4= 1949? ; 9= 1949 ; 7= 1950?? ; 2= 1950 ; 2= 1951?? ; 2= 1951? ; 6= 1951 ; 6= 1952?? ; 1= 1952 ; 1= 1953?? ; 1= 1954?? ; 4= 1954 ; 1= 1955?? ; 5= 9999

Quantity of Models at Radiomuseum.org with this tube (valve, valves, valvola, valvole, válvula, lampe):214


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