Antique radios, Old Time Radios

12SQ7GT

Country:	United States of America (USA)		Brand:	Common type USA tube
			Tube type:	Double Diode-Triode Audio Frequency

Tube ID = 2952

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Identical to	12SQ7GT
Similar Tubes	Other shape (e.g. bulb type): 12SQ7 Normally replaceable-slightly different: 12G2P; OBC3 Other class quality (otherwise equal): CV547 Heater different: 6SQ7GT; 6SQ7GTY Other base: 14B6
First year	1939 -- Collector info (Sammler)
First Source (s)	01.May.1939 : Electron Tube Registration List
Predecessor Tubes	12Q7G
Successor Tubes	12AT6

Base	Octal (Int.Octal, IO) K8A, USA 1935 (Codex=Vk)
Filament	Vf 12.6 Volts / If: 0.15 Ampere / -: Indirect / -: Series, AC/DC /
Tube prices	0 Tube prices (visible for members only)
Literature	Essential Characteristics, GE 1973 Taschenbuch zum Röhren-Codex 1948/49

12SQ7GT: John Koster
John Koster

12SQ7GT: RTT Schwandt
Günther Stabe

12SQ7GT: Sylvania Technical Manual
Peter Hoddow

Usage in Models

13= 1939? ; 44= 1939 ; 36= 1940?? ; 17= 1940? ; 104= 1940 ; 18= 1941?? ; 25= 1941? ; 74= 1941 ; 14= 1942?? ; 30= 1942? ; 29= 1942 ; 1= 1944?? ; 1= 1944 ; 5= 1945? ; 7= 1945 ; 19= 1946?? ; 43= 1946? ; 138= 1946 ; 27= 1947?? ; 19= 1947? ; 89= 1947 ; 4= 1948?? ; 7= 1948? ; 30= 1948 ; 9= 1949?? ; 6= 1949? ; 34= 1949 ; 34= 1950?? ; 1= 1950? ; 16= 1950 ; 14= 1951?? ; 3= 1951? ; 34= 1951 ; 4= 1952?? ; 1= 1952? ; 6= 1952 ; 2= 1953? ; 2= 1954? ; 1= 1954 ; 4= 1955?? ; 2= 1955 ; 1= 1956?? ; 1= 1956 ; 1= 9999

Number of Models at Radiomuseum.org with this tube (valve, valves, valvola, valvole, válvula, lampe): 970

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