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7B7

Information - Help 
ID = 2855
       
Country:
United States of America (USA)
Brand:
Developer: Philco, Philadelphia Stg. Batt. Co.; USA 
Tube type:  Vacuum Pentode   RF/IF-Stage   Controlling (mu) 
Identical to 7B7
Similar Tubes
Normally replaceable-slightly different:
  7B7E
Other class quality (otherwise equal):
  CV522
Other base:
  6SS7 ; 6SS7GT
First Source (s)
09.Dec.1938 : Electron Tube Registration List 152
Predecessor Tubes 6S7G  
Successor Tubes 6BJ6  

Base Loctal-8, B8G (Sylvania, 1938) (Codex=W)
Was used by Radio/TV-reception etc.
Filament Vf 6.3 Volts / If 0.15 Ampere / Indirect / Parallel / series AC/DC /
Tube prices 3 Tube prices (visible for members only)
Literature Essential Characteristics, GE 1973   
Taschenbuch zum Röhren-Codex 1948/49   

  7b7.png
  7B7: Courtesy Bureau Belper (De Muiderkring, Bussum), Scan Frank Philipse
Michael Schlör
 
7b7~~3.jpg
7B7: Sammlung PR
Peter Roggenhofer

 
358_1.png
7B7: Telefunken Werkstattbuch
Wolfgang Bauer

 
7b7_techdat01.png
7B7: Sylvania Technical Manual
Peter Hoddow


Usage in Models 13= 1938 ; 1= 1939?? ; 1= 1939? ; 84= 1939 ; 3= 1940?? ; 2= 1940? ; 75= 1940 ; 1= 1941?? ; 2= 1941? ; 70= 1941 ; 1= 1942?? ; 3= 1942? ; 5= 1942 ; 1= 1945?? ; 4= 1945? ; 1= 1945 ; 3= 1946?? ; 8= 1946? ; 35= 1946 ; 3= 1947?? ; 7= 1947? ; 26= 1947 ; 3= 1948?? ; 2= 1948? ; 43= 1948 ; 4= 1949?? ; 7= 1949? ; 19= 1949 ; 8= 1950?? ; 4= 1950? ; 24= 1950 ; 1= 1951? ; 19= 1951 ; 3= 1952?? ; 2= 1952? ; 6= 1952 ; 2= 1953?? ; 2= 1953? ; 10= 1953 ; 1= 1954?? ; 1= 1954? ; 7= 1954 ; 3= 1955?? ; 3= 1955? ; 1= 9999

Quantity of Models at Radiomuseum.org with this tube (valve, valves, valvola, valvole, válvula, lampe):524


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