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14Q7

Information - Help 
ID = 2645
       
Country:
United States of America (USA)
Brand: Common type USA tube/semicond.
Tube type:  Pentagrid-Converter (Heptode)   Pentagrid (new)   Controlling (mu) 
Identical to 14Q7
Similar Tubes
Heater different:
  7Q7
Other base:
  12SA7
First Source (s)
01.Mar.1940 : Electron Tube Registration List
Predecessor Tubes 12A8G   14B8  
Successor Tubes 12BE6  

Base Loctal-8, B8G (Sylvania, 1938) (Codex=Wd)
Filament Vf 12.6 Volts / If 0.15 Ampere / Indirect / Parallel / series AC/DC /
Tube prices 2 Tube prices (visible for members only)
Literature Essential Characteristics, GE 1973   
Taschenbuch zum Röhren-Codex 1948/49   

  14q7.png
  14Q7: Courtesy Bureau Belper (De Muiderkring, Bussum), Scan Frank Philipse
Karel De Reus †
 
14q7a_1.jpg
14Q7: C.M.
Mario Coelho

 
411_1.png
14Q7: Telefunken Werkstattbuch
Wolfgang Bauer

 
14q7_techdat01.png
14Q7: Sylvania Technical Manual
Peter Hoddow


Usage in Models 1= 1924? ; 1= 1940 ; 2= 1941? ; 7= 1941 ; 4= 1942?? ; 3= 1942? ; 8= 1942 ; 6= 1945? ; 3= 1945 ; 5= 1946?? ; 29= 1946? ; 115= 1946 ; 18= 1947?? ; 5= 1947? ; 53= 1947 ; 2= 1948?? ; 2= 1948? ; 57= 1948 ; 4= 1949?? ; 3= 1949? ; 11= 1949 ; 7= 1950?? ; 1= 1950? ; 1= 1950 ; 11= 1951?? ; 3= 1952?? ; 1= 1952? ; 3= 1953?? ; 1= 1955?? ; 1= 9999

Quantity of Models at Radiomuseum.org with this tube (valve, valves, valvola, valvole, válvula, lampe):368


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