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DF11

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ID = 624
       
Country:
Europe
Brand: Common type Europe tube/semicond.
Developer: Telefunken Deutschland (TFK), (Gesellschaft für drahtlose Telegraphie Telefunken mbH 
Tube type:  Vacuum Pentode   RF/IF-Stage   Controlling (mu) 
Identical to DF11
First year 1940 -- Collector info (Sammler)
First Source (s)
May.1940 : Funkschau 1940 #4
Successor Tubes DF15  

Base German Steel Y8A, 1938 (Codex=Roo)
Filament Vf 1.2 Volts / If 0.025 Ampere / Direct / Battery =
Tube prices 9 Tube prices (visible for members only)
Literature Taschenbuch zum Röhren-Codex 1948/49   
  df11.png
  DF11: Courtesy Bureau Belper (De Muiderkring, Bussum), Scan Frank Philipse
Karel De Reus †
 
df11_tf_r.jpg
DF11: collection JR
Jacob Roschy

 
178.png
DF11: Telefunken Werkstattbuch
Wolfgang Bauer

 
df11_spec.png
DF11: RVF-Röhrenbuch-M1,1947
Anonymous 15 Collector


Usage in Models 1= 1939 ; 1= 1940?? ; 2= 1940? ; 13= 1940 ; 27= 1941 ; 2= 1942?? ; 2= 1942? ; 8= 1942 ; 2= 1943? ; 3= 1943 ; 1= 1946 ; 2= 1948 ; 1= 1949? ; 5= 1949 ; 2= 1950? ; 5= 1950 ; 2= 1951? ; 6= 1951 ; 1= 1952?? ; 4= 1952 ; 1= 1953

Quantity of Models at Radiomuseum.org with this tube (valve, valves, valvola, valvole, válvula, lampe):91


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