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12Q7G

Information - Help 
ID = 2950
       
Country:
Worldwide
Brand: Common type Worldwide tube/semicond.
Developer: National Union Radio Corp.; Orange (NJ) 
Tube type:  Double Diode-Triode   Audio Frequency 
Identical to 12Q7G
Similar Tubes
Other shape (e.g. bulb type):
  12Q7GT ; 12Q7MGT
Heater different:
  6Q7G
Heater and shape different:
  6Q7
First Source (s)
22.May.1939 : Electron Tube Registration List
Predecessor Tubes 6Q7G   12Q7GT  
Successor Tubes 12SQ7   12SQ7GT  

Base Octal (Int.Octal, IO) K8A, USA 1935 (Codex=Vk) Top contact with a cap
Was used by Radio/TV-reception etc.
Filament Vf 12.6 Volts / If 0.15 Ampere / Indirect / Parallel / series AC/DC /
Tube prices 1 Tube prices (visible for members only)
Literature Taschenbuch zum Röhren-Codex 1948/49   

 
337_2~~7.png
12Q7G: Telefunken Werkstattbuch
Wolfgang Bauer

 

Usage in Models 1= 1939? ; 4= 1939 ; 8= 1940? ; 29= 1940 ; 1= 1941? ; 1= 1942 ; 2= 1943 ; 8= 1945? ; 2= 1946?? ; 2= 1948? ; 1= 1950??

Quantity of Models at Radiomuseum.org with this tube (valve, valves, valvola, valvole, válvula, lampe):59

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