Antique radios, Old Time Radios

12SK7

Country:	United States of America (USA)		Brand:	Common type USA tube
			Tube type:	Vacuum Pentode RF/IF-Stage Controlling (mu)

Tube ID = 2637

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Identical to	12SK7 = VT-131
Similar Tubes	Other shape (e.g. bulb type): 12SK7GT; CV544 Other class quality (otherwise equal): 12SK7Y; 5661; CV543 Heater different: 6SK7
First year	1939 -- Collector info (Sammler)
First Source (s)	02.Feb.1939 : Electron Tube Registration List
Successor Tubes	12BA6

Base	Octal (Int.Octal, IO) K8A, USA 1935 (Codex=Uka)
Filament	Vf 12.6 Volts / If: 0.15 Ampere / -: Indirect / -: Parallel / series AC/DC /
Tube prices	1 Tube prices (visible for members only)
Literature	Essential Characteristics, GE 1973 Taschenbuch zum Röhren-Codex 1948/49


	12SK7: Courtesy Bureau Belper (De Muiderkring, Bussum), Scan Frank Philipse Karel De Reus †

12SK7: collection JR
Jacob Roschy

12SK7: Lorenz Empfänger-Röhren , 9. Auflage
Anonymous 54 Collector

12SK7: SEL Handbuch 1964
Peter Hoddow

Usage in Models

1= 1934?? ; 1= 1934 ; 4= 1938? ; 2= 1938 ; 9= 1939?? ; 42= 1939? ; 213= 1939 ; 44= 1940?? ; 62= 1940? ; 197= 1940 ; 95= 1941?? ; 98= 1941? ; 225= 1941 ; 46= 1942?? ; 113= 1942? ; 73= 1942 ; 5= 1943? ; 3= 1943 ; 4= 1944 ; 10= 1945?? ; 8= 1945? ; 42= 1945 ; 23= 1946?? ; 68= 1946? ; 494= 1946 ; 54= 1947?? ; 24= 1947? ; 232= 1947 ; 47= 1948?? ; 26= 1948? ; 204= 1948 ; 64= 1949?? ; 25= 1949? ; 85= 1949 ; 49= 1950?? ; 15= 1950? ; 34= 1950 ; 52= 1951?? ; 21= 1951? ; 39= 1951 ; 23= 1952?? ; 8= 1952? ; 22= 1952 ; 16= 1953?? ; 7= 1953? ; 12= 1953 ; 20= 1954?? ; 9= 1954? ; 3= 1954 ; 7= 1955?? ; 3= 1955? ; 3= 1960?? ; 1= 1963 ; 2= 9999

Number of Models at Radiomuseum.org with this tube (valve, valves, valvola, valvole, válvula, lampe): 2989

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