12SQ7, Tube 12SQ7; Röhre 12SQ7 (12SQ7)

Antique radios, Old Time Radios

12SQ7

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

Tube ID = 2638


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Identical to	12SQ7 = VT-104
Similar Tubes	12SQ7GT (other shape (e.g. bulb, size)) 6SQ7 (Heater different) CV546 (Multiple differences or of other kind)
First Series	1939 -- Collector info (Sammler)
First Source (s)	Feb.1939 : Electron Tube Registration List
Predecessor Tubes	12Q7G 12Q7GT
Successor Tubes	12AT6

Base	Octal (Int.Octal, IO) K8A, USA 1935 (Codex=Vk)
Was used by	Radio/TV-reception etc.
Filament	-: Indirect / -: Series, AC/DC / If: 0.15 Ampere / Vf 12.6 Volts /
Tube prices	0 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

Private collection
Emilio Ciardiello

Telefunken Werkstattbuch
Wolfgang Bauer

SEL Handbuch 1964
Peter Hoddow

Usage in Models

1= 1933 ; 1= 1934?? ; 1= 1938? ; 2= 1938 ; 11= 1939?? ; 6= 1939? ; 91= 1939 ; 35= 1940?? ; 25= 1940? ; 140= 1940 ; 51= 1941?? ; 17= 1941? ; 164= 1941 ; 48= 1942?? ; 3= 1942? ; 82= 1942 ; 1= 1943? ; 1= 1943 ; 7= 1945?? ; 9= 1945? ; 26= 1945 ; 38= 1946?? ; 35= 1946? ; 282= 1946 ; 57= 1947?? ; 17= 1947? ; 191= 1947 ; 44= 1948?? ; 12= 1948? ; 228= 1948 ; 65= 1949?? ; 44= 1949? ; 99= 1949 ; 34= 1950?? ; 26= 1950? ; 48= 1950 ;

Number of Models with this tube 2294

No further Information for

12SQ7

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