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12K8

Information - Help 
ID = 2632
       
Country:
United States of America (USA)
Brand: Common type USA tube/semicond.
Developer:  
Tube type:  Triode-Hexode   Frequency converter   Controlling (mu) 
Identical to 12K8 = CV703
Similar Tubes
Other shape (e.g. bulb type):
  12K8GT
Other class quality (otherwise equal):
  12K8Y
Heater different:
  6K8
First Source (s)
16.Oct.1939 : Electron Tube Registration List
Predecessor Tubes 12A8G  
Successor Tubes 14S7  
Base Octal (Int.Octal, IO) K8A, USA 1935 (Codex=Ue) Top contact with a cap
Was used by Radio/TV-reception etc.
Filament Vf 12.6 Volts / If 0.15 Ampere / Indirect / Parallel / series AC/DC
Tube prices 4 Tube prices (visible for members only)
Literature Essential Characteristics, GE 1973   
Taschenbuch zum Röhren-Codex 1948/49   
  12k8.png
  12K8: Courtesy Bureau Belper (De Muiderkring, Bussum), Scan Frank Philipse
Karel De Reus †
 
12k8a.jpg
12K8: wiwi
Wilfried Winter
 
12k8.png
12K8: Lorenz Empfänger-Röhren , 9. Auflage
Anonymous 54 Collector
 
12k8_techdata.png
12K8: Original GENERAL ELECTRIC
Josef Pilz
Usage in Models 1= 1939?? ; 1= 1939? ; 2= 1939 ; 2= 1940?? ; 2= 1940? ; 2= 1940 ; 2= 1941?? ; 3= 1941? ; 3= 1941 ; 1= 1942?? ; 1= 1942? ; 4= 1943 ; 1= 1944 ; 1= 1945 ; 1= 1946? ; 1= 1947?? ; 4= 1947 ; 3= 1948?? ; 1= 1948 ; 2= 1949? ; 2= 1949 ; 9= 1950?? ; 3= 1950? ; 1= 1953
Quantity of Models at Radiomuseum.org with this tube (valve, valves, valvola, valvole, válvula, lampe):53
Collection of Antonio Rabitti (BR)
Collection of Valery Gromov (RUS)
Collection of David Erali (USA)
Collection of Karlheinz Fischer (D)
Collection of Roland Biesler (D)
Collection of Georges Werts (B)
Collection of a member from FIN
Collection of Jacob Roschy (D)
Collection of Wilfried Winter (D)
Collection of a member from D
Collection of a member from FIN
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