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12SG7

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ID = 2636
       
Country:
United States of America (USA)
Brand:
Tube type:  Vacuum Pentode   RF/IF-Stage   Controlling (mu) 
Identical to 12SG7 = VT-209 = CV694 = 12К4
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 / Specified voltage AND current AC/DC
Tube prices 4 Tube prices (visible for members only)
Information source Taschenbuch zum Röhren-Codex 1948/49   
12sg7.png
12SG7: Courtesy Bureau Belper (De Muiderkring, Bussum), Scan Frank Philipse
Karel De Reus †
12sg7_so.png 12SG7: RCA Reference Book 1968
Anonymous 10 Collector
More ...
Just Qvigstad 		12sg7_techdata.png
12SG7: Original GENERAL ELECTRIC
Josef Pilz
More ...
Usage in Models 2= 1939? ; 1= 1940?? ; 2= 1941?? ; 1= 1941? ; 7= 1941 ; 3= 1942?? ; 1= 1942? ; 1= 1942 ; 2= 1943? ; 1= 1944? ; 2= 1944 ; 2= 1945? ; 11= 1945 ; 10= 1946? ; 55= 1946 ; 4= 1947?? ; 3= 1947? ; 23= 1947 ; 1= 1948?? ; 7= 1948? ; 27= 1948 ; 5= 1949?? ; 6= 1949? ; 7= 1949 ; 9= 1950?? ; 1= 1950? ; 2= 1950 ; 2= 1951?? ; 2= 1951? ; 5= 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):224

Collection of

Jacob Roschy (D)
Uwe Rössler (D)
Martin Steyer (D)
Robert Gillespie (USA)
Oskar Elm (D)
Museum Roggenhofer (A)
Karlheinz Fischer (D)
Patrice Zeissloff (F)
Massimo Pedrina (I)
Georges Werts (B)
Collection of a member from A
Valery Gromov (RUS)
Peter Pfeiffer (D)
Danko Tkalec (HR)
Thomas Loidl (A)
Aldo Patriarca (CH)
Egon Strampe (D)
Roland Biesler (D)
Wilhelm Hamm (D)
Collection of a member from D
Tomasz Szczesniak (PL)
Christian Schaufelberger (CH)
Anton Gämperle (CH)
Emilio Ciardiello (I)
Ottmar Rollmann (D)
Bekir Yurdakul (F)
Hartmut Völler (D)
Collection of a member from FIN
David Erali (USA)
 
12sc7~~2.jpg

12SG7
 
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