7Q7, Tube 7Q7; Röhre 7Q7 (7Q7)

Antique radios, Old Time Radios

7Q7

Country:	United States of America (USA)		Brand:	Common type USA
			Tube type:	Pentagrid-Converter (Heptode) Pentagrid (new)

Tube ID = 4033


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Identical to	7Q7
Similar Tubes	6SA7GT (other base) 14Q7 (Heater different)
First Source (s)	21.Aug.1939 : Electron Tube Registration List
Predecessor Tubes	6A8G 7B8 6SA7GT
Successor Tubes	6BE6

Base	Loctal-8, B8G (Sylvania, 1938) (Codex=Wd)
Was used by	Radio/TV-reception etc.
Filament	-: Indirect / -: Parallel / series AC/DC / If: 0.3 Ampere / Vf 6.3 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 Michael Schlör

wtzenow
Wesselin Tzenow

Telefunken Werkstattbuch
Wolfgang Bauer

Sylvania Technical Manual
Peter Hoddow

Usage in Models	1= 1936 ; 2= 1940?? ; 1= 1941? ; 17= 1942 ; 3= 1946?? ; 10= 1946? ; 6= 1946 ; 8= 1947?? ; 4= 1947? ; 17= 1947 ; 1= 1948?? ; 6= 1948? ; 39= 1948 ; 4= 1949?? ; 3= 1949? ; 9= 1949 ; 5= 1950?? ; 2= 1950 ; 10= 1951?? ; 1= 1951 ; 3= 1952?? ; 5= 1953?? ; 1= 1959 ;
Number of Models with this tube 158

No further Information for

7Q7

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