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14Q7

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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 / Specified voltage AND current AC/DC
Tube prices 2 Tube prices (visible for members only)
Information source 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 †
411_1.png 14Q7: Telefunken Werkstattbuch
Wolfgang Bauer
More ...
Just Qvigstad 		14q7_techdat01.png
14Q7: Sylvania Technical Manual
Peter Hoddow
Usage in Models 1= 1924? ; 1= 1940 ; 2= 1941? ; 6= 1941 ; 3= 1942?? ; 3= 1942? ; 10= 1942 ; 6= 1945? ; 3= 1945 ; 6= 1946?? ; 28= 1946? ; 116= 1946 ; 18= 1947?? ; 6= 1947? ; 54= 1947 ; 4= 1948?? ; 3= 1948? ; 57= 1948 ; 4= 1949?? ; 5= 1949? ; 10= 1949 ; 9= 1950?? ; 1= 1950? ; 1= 1950 ; 10= 1951?? ; 3= 1952?? ; 2= 1952? ; 3= 1953??
Quantity of Models at Radiomuseum.org with this tube (valve, valves, valvola, valvole, válvula, lampe):375

Collection of

David Erali (USA)
Aldo Patriarca (CH)
Mario Coelho (P)
Tor Steinnes (N)
George Papaiz (CDN)
Tomasz Szczesniak (PL)
Werner Schaffner (CH)
Marcello Astolfi (I)
Collection of a member from FIN
Michael Gnaedig-Fischer (MEX)
Bruce Morgenstern (CDN)
 
14q7a_1.jpg

14Q7
 
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