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7S7

Information - Help 
ID = 2108
       
Country:
Worldwide
Brand:
Tube type:  Triode-Heptode   Frequency converter   Controlling (mu) 
Identical to 7S7 = X148
Similar Tubes
Heater different:
  14S7
First Source (s)
19.May.1941 : Electron Tube Registration List
Predecessor Tubes 7J7   6K8GT  

Base Loctal-8, B8G (Sylvania, 1938) (Codex=W)
Was used by Radio/TV-reception etc.
Filament Vf 6.3 Volts / If 0.3 Ampere / Indirect / Parallel / series AC/DC /
Dimensions (WHD)
incl. pins / tip
30 x 71 x mm / 1.18 x 2.80 x inch
Weight 21 g / 0.74 oz
Tube prices 5 Tube prices (visible for members only)
Literature Essential Characteristics, GE 1973   Data SYLVANIA Tubes book
Taschenbuch zum Röhren-Codex 1948/49   

  7s7.png
  7S7: Courtesy Bureau Belper (De Muiderkring, Bussum), Scan Frank Philipse
Michael Schlör
 
7s71.jpg
7S7
Aldo Patriarca

 
415_2.png
7S7: Telefunken Werkstattbuch
Wolfgang Bauer

 
7s7.png
7S7: Sylvania Radio Tubes Technical Manual
Didier Tholomier


Usage in Models 1= 1940?? ; 4= 1941 ; 6= 1942 ; 3= 1945? ; 1= 1946?? ; 16= 1946 ; 2= 1947?? ; 1= 1947? ; 30= 1947 ; 9= 1948?? ; 1= 1948? ; 29= 1948 ; 2= 1949?? ; 7= 1949? ; 9= 1949 ; 1= 1950?? ; 3= 1950? ; 29= 1950 ; 1= 1951? ; 10= 1951 ; 5= 1952? ; 4= 1952 ; 1= 1953?? ; 3= 1953? ; 5= 1953 ; 1= 1954?? ; 1= 1954? ; 1= 1954 ; 3= 1955?? ; 1= 1955? ; 1= 9999

Quantity of Models at Radiomuseum.org with this tube (valve, valves, valvola, valvole, válvula, lampe):191


Forum contributions about this tube
7S7
Threads: 1 | Posts: 2
Hits: 2050     Replies: 1
7S7
Willy De Grande
30.Jul.05
  1 Beschreibung : Triode - Heptode-converter : 7S7 auser/Uf 6.3V/= 14S7/Uf12.6v/
                       Changeur de frequence triode-heptode. Data SYLVANIA  Tubes book

Abmessungen : Dia. 30 mm / L (u.a) 71 mm.
Hans-Thomas Schmidt
30.Jul.05
  2 Hallo Herr De Grande,

Vielen Dank, die Angaben wurden übernommen.

Beste Grüße, H.-T. Schmidt
 
7S7
End of forum contributions about this tube

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