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7N7

Information - Help 
ID = 3955
       
Country:
United States of America (USA)
Brand: Common type USA tube/semicond.
Tube type:  Double Triode   Universal 
Identical to 7N7 = CV898
Similar Tubes
Heater different:
  14N7
Other base:
  6CG7 ; 6F8G ; 6FQ7 ; 6SN7A ; 6SN7GT
First Source (s)
15.Apr.1940 : Electron Tube Registration List
Predecessor Tubes 6F8G  
Successor Tubes 6CG7   6FQ7  

Base Loctal-8, B8G (Sylvania, 1938) (Codex=W)
Filament Vf 6.3 Volts / If 0.6 Ampere / Indirect / Parallel, (AC/DC)
Description Loktal equivalent of 6SN7GT. 
Tube prices 6 Tube prices (visible for members only)
Literature Essential Characteristics, GE 1973   
Taschenbuch zum Röhren-Codex 1948/49   
  7n7.png
  7N7: Courtesy Bureau Belper (De Muiderkring, Bussum), Scan Frank Philipse
Michael Schlör
 
7n7_rca.jpg
7N7: My tubes
Anonymous 413 Collector

 
342_1.png
7N7: Telefunken Werkstattbuch
Wolfgang Bauer

 
7n7_techdat01.png
7N7: Sylvania Technical Manual
Peter Hoddow


Usage in Models 1= 1940?? ; 3= 1941 ; 1= 1942?? ; 4= 1942 ; 1= 1944 ; 1= 1945?? ; 5= 1946? ; 7= 1946 ; 3= 1947 ; 3= 1948?? ; 5= 1948? ; 3= 1948 ; 14= 1949 ; 2= 1950?? ; 2= 1950? ; 1= 1951?? ; 1= 1951? ; 10= 1951 ; 1= 1955?? ; 2= 1959?

Quantity of Models at Radiomuseum.org with this tube (valve, valves, valvola, valvole, válvula, lampe):70


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