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7K7

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ID = 2995
       
Country:
United States of America (USA)
Brand: Common type USA tube/semicond.
Tube type:  Double Diode-Triode   Detector 
Identical to 7K7 = CV896
Similar Tubes
Other base:
  6AQ7GT
First Source (s)
15.Aug.1941 : Electron Tube Registration List

Base Loctal-8, B8G (Sylvania, 1938) (Codex=Ve)
Filament Vf 6.3 Volts / If 0.3 Ampere / Indirect / Parallel / series AC/DC /
Description The construction of the 7K7 is based on the twin triode 7F7, whereby the second triode unit is altered into a double diode by using the two grid rods as diode anodes, (without grid windings), and the anode cylinder acts only as shield. 
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Tube prices 0 Tube prices (visible for members only)
Literature Essential Characteristics, GE 1973   
Taschenbuch zum Röhren-Codex 1948/49   

  7k7.png
  7K7: Courtesy Bureau Belper (De Muiderkring, Bussum), Scan Frank Philipse
Michael Schlör
 
7k7_284r.jpg
7K7: Collection JR
Jacob Roschy

 
333.png
7K7: Telefunken Werkstattbuch
Wolfgang Bauer

 
7k7_techdat01.png
7K7: Sylvania Technical Manual
Peter Hoddow


Usage in Models 1= 1938 ; 5= 1941 ; 2= 1942? ; 2= 1942 ; 1= 1946 ; 2= 1948 ; 1= 1949 ; 1= 1950?? ; 4= 1950 ; 1= 1952??

Number of Models at Radiomuseum.org with this tube (valve, valves, valvola, valvole, válvula, lampe):20


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