7F7, Tube 7F7; Röhre 7F7 (7F7)

Antique radios, Old Time Radios

7F7

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

Tube ID = 3144


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Identical to	7F7
Similar Tubes	6SL7GT (other base)
First Source (s)	12.Jun.1939 : Electron Tube Registration List
Predecessor Tubes	6SL7GT 6SL7
Successor Tubes	12AX7 VT-189

Base	Loctal-8, B8G (Sylvania, 1938) (Codex=W)
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

M.N.
Anonymous 124 Collector

Telefunken Werkstattbuch
Wolfgang Bauer

Sylvania Technical Manual
Peter Hoddow

Usage in Models	1= 1936 ; 1= 1940?? ; 2= 1940 ; 1= 1941?? ; 4= 1941 ; 10= 1942 ; 2= 1945? ; 1= 1945 ; 1= 1946?? ; 1= 1946? ; 2= 1946 ; 3= 1947?? ; 2= 1947 ; 3= 1948?? ; 4= 1948? ; 9= 1948 ; 4= 1949?? ; 7= 1949 ; 7= 1950?? ; 1= 1950? ; 3= 1950 ; 6= 1951?? ; 3= 1951 ; 4= 1952?? ; 2= 1952 ; 5= 1953?? ; 1= 1956 ;
Number of Models with this tube 90

No further Information for

7F7

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