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12B7

Information - Help 
ID = 4034
       
Country:
United States of America (USA)
Brand: Common type USA tube/semicond.
Developer: Raytheon Mfg. Co.; Cambridge, USA (also tubes) 
Tube type:  Vacuum Pentode   RF/IF-Stage   Controlling (mu) 
Identical to 12B7 = 14A7 = 14A7/12B7
Similar Tubes
Normally replaceable-slightly different:
  12B7ML
First Source (s)
12.Jun.1939 : Electron Tube Registration List 192

Base Loctal-8, B8G (Sylvania, 1938) (Codex=W)
Filament Vf 12.6 Volts / If 0.15 Ampere / Indirect / Parallel / series AC/DC /
Tube prices 1 Tube prices (visible for members only)
Literature Essential Characteristics, GE 1973   
Taschenbuch zum Röhren-Codex 1948/49   

 
12b7.jpg
12B7: Michael Gnaedig
Michael Gnaedig-Fischer

 
358_9.png
12B7: Telefunken Werkstattbuch
Wolfgang Bauer

 

Usage in Models 1= 1924? ; 7= 1939 ; 4= 1940 ; 16= 1941 ; 19= 1942 ; 4= 1946? ; 13= 1946 ; 3= 1947 ; 5= 1948 ; 2= 1949?? ; 1= 1951??

Quantity of Models at Radiomuseum.org with this tube (valve, valves, valvola, valvole, válvula, lampe):75


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