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12SL7

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ID = 13416
       
 
   
Tube type:  Double Triode 
Identical to 12SL7 = 12SL7GT

Base Octal (Int.Octal, IO) K8A, USA 1935 (Codex=Vk)
Filament
Description There is no metal tube 12SL7, see under 12SL7GT 
Text in other languages (may differ)
  12sl7.png
  12SL7: Courtesy Bureau Belper (De Muiderkring, Bussum), Scan Frank Philipse
Karel De Reus †
 
12sl7.jpg
12SL7: B.W.
Wolfgang Bauer

 
344_2.png
12SL7: Telefunken Werkstattbuch
Wolfgang Bauer

 

from Just Qvigstad

Usage in Models 1= 1940? ; 1= 1944 ; 1= 1946? ; 1= 1947? ; 2= 1947 ; 4= 1950 ; 1= 1951? ; 1= 1953?? ; 3= 1953? ; 2= 1953 ; 1= 1954?? ; 4= 1954

Quantity of Models at Radiomuseum.org with this tube (valve, valves, valvola, valvole, válvula, lampe):22

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