Antique radios, Old Time Radios

12SK7

Country:	United States of America (USA)		Brand:	Common type USA
			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 Other class quality (otherwise equal): 5661 Heater different: 6SK7
First Series	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)
Was used by	Radio/TV-reception etc.
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


	Courtesy Bureau Belper (De Muiderkring, Bussum), Scan Frank Philipse Karel De Reus

collection JR
Jacob Roschy

Lorenz Empfänger-Röhren , 9. Auflage
Michael Sigmund

SEL Handbuch 1964
Peter Hoddow

Usage in Models (calculation each 25th of the month)

1= 1933 ; 1= 1934?? ; 1= 1934 ; 4= 1938? ; 2= 1938 ; 10= 1939?? ; 39= 1939? ; 163= 1939 ; 41= 1940?? ; 52= 1940? ; 159= 1940 ; 95= 1941?? ; 82= 1941? ; 185= 1941 ; 57= 1942?? ; 43= 1942? ; 78= 1942 ; 1= 1943?? ; 5= 1943? ; 2= 1943 ; 4= 1944 ; 7= 1945?? ; 7= 1945? ; 29= 1945 ; 18= 1946?? ; 68= 1946? ; 363= 1946 ; 56= 1947?? ; 16= 1947? ; 191= 1947 ; 46= 1948?? ; 17= 1948? ; 194= 1948 ; 67= 1949?? ; 37= 1949? ; 84= 1949 ;

Number of Models at Radiomuseum.org with this tube (valve, valves, valvola, valvole, válvula, lampe): 2566

No further Information for

12SK7

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