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7W7

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ID = 3958
       
Country:
United States of America (USA)
Brand: Common type USA tube/semicond.
Tube type:  Vacuum Pentode   RF/IF-Stage 
Identical to 7W7 = 1282 = CV902
Similar Tubes
Different connections:
  7V7
Other base and data slightly different:
  6AB7
First Source (s)
07.Nov.1941 : Electron Tube Registration List
Predecessor Tubes 6AB7  
Successor Tubes 6CB6   14W7   6AU6  

Base Loctal-8, B8G (Sylvania, 1938) (Codex=Wk)
Was used by Radio/TV-reception etc.
Filament Vf 6.3 Volts / If 0.45 Ampere / Indirect / Specified voltage AC/DC
Tube prices 3 Tube prices (visible for members only)
Information source Essential Characteristics, GE 1973   
Taschenbuch zum Röhren-Codex 1948/49   

7w7.png
7W7: Courtesy Bureau Belper (De Muiderkring, Bussum), Scan Frank Philipse
Anonymous 10 Collector

373.png 7W7: Telefunken Werkstattbuch
Wolfgang Bauer

More ...

Just Qvigstad
7w7_techdat01.png
7W7: Sylvania Technical Manual
Peter Hoddow

More ...
Usage in Models 4= 1946? ; 11= 1946 ; 8= 1947? ; 13= 1947 ; 1= 1948?? ; 4= 1948? ; 11= 1948 ; 1= 1950?? ; 2= 1950?

Quantity of Models at Radiomuseum.org with this tube (valve, valves, valvola, valvole, válvula, lampe):55

Collection of

 
7w7nationalunion_klein.jpg

7W7
 

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