Antique radios, Old Time Radios

7B7

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

Tube ID = 2855

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Identical to	7B7
Similar Tubes	Normally replaceable-slightly different: 7B7E Other class quality (otherwise equal): CV522 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


	7B7: Courtesy Bureau Belper (De Muiderkring, Bussum), Scan Frank Philipse Michael Schlör

7B7
Anonymous 773 Collector

7B7: Telefunken Werkstattbuch
Wolfgang Bauer

7B7: Sylvania Technical Manual
Peter Hoddow

Usage in Models

12= 1938 ; 1= 1939?? ; 1= 1939? ; 84= 1939 ; 3= 1940?? ; 2= 1940? ; 72= 1940 ; 1= 1941?? ; 2= 1941? ; 74= 1941 ; 1= 1942?? ; 3= 1942? ; 5= 1942 ; 1= 1945?? ; 4= 1945? ; 1= 1945 ; 3= 1946?? ; 8= 1946? ; 35= 1946 ; 3= 1947?? ; 4= 1947? ; 23= 1947 ; 2= 1948?? ; 2= 1948? ; 43= 1948 ; 4= 1949?? ; 8= 1949? ; 17= 1949 ; 5= 1950?? ; 2= 1950? ; 15= 1950 ; 1= 1951? ; 16= 1951 ; 3= 1952?? ; 2= 1952? ; 8= 1952 ; 2= 1953?? ; 2= 1953? ; 9= 1953 ; 1= 1954?? ; 1= 1954? ; 7= 1954 ; 3= 1955?? ; 3= 1955?

Number of Models at Radiomuseum.org with this tube (valve, valves, valvola, valvole, válvula, lampe): 499

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