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7A5 Info
Country:  United States of America (USA)      Brand:  Common type USA 
  Tube type:  Beam Power Tube 
Tube ID = 2990
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Identical to 7A5
Similar Tubes 35A5 (Heater different)  
First Source (s) 04.May.1939 : Electron Tube Registration List

Base Loctal-8, B8G (Sylvania, 1938) (Codex=Wdb)
Was used by Radio/TV-reception etc.
Filament -: Indirect / -: Parallel, (AC/DC) / If: 0.75 Ampere / Vf 6.3 Volts /
Tube prices 0 Tube prices (visible for members only)
Literature Essential Characteristics, GE 1973   
Taschenbuch zum Röhren-Codex 1948/49   

  7a5.gif
  Courtesy Bureau Belper (De Muiderkring, Bussum), Scan Frank Philipse
Michael Schlör
7a5.jpg
scc
Christian Schaufelberger

 
355_1.png
Telefunken Werkstattbuch
Wolfgang Bauer

 
7a5_techdat01.png
Sylvania Technical Manual
Peter Hoddow

Usage in Models   4= 1939 ; 1= 1940 ; 3= 1941 ; 1= 1948? ; 6= 1948 ; 4= 1949 ; 6= 1950?? ; 1= 1952?? ;
Number of Models with this tube   26
No further Information for

7A5    

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