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14A7

Information - Help 
ID = 2825
       
Country:
United States of America (USA)
Brand: Common type USA tube/semicond.
Tube type:  Vacuum Pentode   RF/IF-Stage   Controlling (mu) 
Identical to 14A7 = 12B7 = 14A7/12B7
Similar Tubes
Heater different:
  7A7
Other base:
  12SK7GT
First Source (s)
28.Oct.1940 : Electron Tube Registration List
Predecessor Tubes 12SK7GT   12K7GT  
Successor Tubes 12BA6  

Base Loctal-8, B8G (Sylvania, 1938) (Codex=W)
Filament Vf 12.6 Volts / If 0.15 Ampere / Indirect / Parallel / series AC/DC
Tube prices 3 Tube prices (visible for members only)
Literature Taschenbuch zum Röhren-Codex 1948/49   
  14a7.png
  14A7: Courtesy Bureau Belper (De Muiderkring, Bussum), Scan Frank Philipse
Karel De Reus †
 
14a7sylvaniaph1s.jpg
14A7: Patrice ZEISSLOFF
Patrice Zeissloff

 
358_10.png
14A7: Telefunken Werkstattbuch
Wolfgang Bauer

 
14a7_techdat01.png
14A7: Sylvania Technical Manual
Peter Hoddow


Usage in Models 1= 1924? ; 1= 1939?? ; 1= 1940? ; 1= 1940 ; 2= 1941? ; 5= 1941 ; 2= 1942?? ; 2= 1942? ; 8= 1942 ; 1= 1943 ; 6= 1945? ; 3= 1945 ; 4= 1946?? ; 22= 1946? ; 100= 1946 ; 16= 1947?? ; 3= 1947? ; 41= 1947 ; 2= 1948?? ; 3= 1948? ; 54= 1948 ; 4= 1949?? ; 3= 1949? ; 17= 1949 ; 5= 1950?? ; 2= 1950 ; 11= 1951?? ; 3= 1951 ; 1= 1952?? ; 1= 1952? ; 1= 1952 ; 3= 1953?? ; 1= 1955??

Quantity of Models at Radiomuseum.org with this tube (valve, valves, valvola, valvole, válvula, lampe):330


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