Antique radios, Old Time Radios

7B7

Country:	United States of America (USA)		Brand:	Common type USA
			Tube type:	Vacuum Pentode Controlling (mu)

Tube ID = 2855


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Identical to	7B7
Similar Tubes	Normally replaceable-slightly different: 7B7E Other base: 6SS7; 6SS7GT
First Source (s)	09.Dec.1938 : Electron Tube Registration List
Predecessor Tubes	6S7G
Successor Tubes	6BJ6

Base	Loctal-8, B8G (Sylvania, 1938) (Codex=W)
Filament	Vf 6.3 Volts / If: 0.15 Ampere / -: Indirect / -: Parallel / series AC/DC /
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

Timo Tuunanen

Telefunken Werkstattbuch
Wolfgang Bauer

Sylvania Technical Manual
Peter Hoddow

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

12= 1938 ; 1= 1939?? ; 84= 1939 ; 2= 1940?? ; 2= 1940? ; 71= 1940 ; 1= 1941?? ; 1= 1941? ; 73= 1941 ; 1= 1942?? ; 3= 1942? ; 6= 1942 ; 3= 1945? ; 2= 1946?? ; 9= 1946? ; 31= 1946 ; 3= 1947?? ; 4= 1947? ; 18= 1947 ; 2= 1948?? ; 2= 1948? ; 44= 1948 ; 4= 1949?? ; 6= 1949? ; 17= 1949 ; 5= 1950?? ; 1= 1950? ; 12= 1950 ; 4= 1951? ; 11= 1951 ; 3= 1952?? ; 2= 1952? ; 6= 1952 ; 2= 1953?? ; 2= 1953? ; 8= 1953 ;

Number of Models at Radiomuseum.org with this tube (valve, valves, valvola, valvole, válvula, lampe): 472

No further Information for

7B7

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