7A8, Tube 7A8; Röhre 7A8 (7A8)

Antique radios, Old Time Radios

7A8

Country:	United States of America (USA)		Brand:	Common type USA
			Tube type:	OCTODE Frequency converter

Tube ID = 2725


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Identical to	7A8
First Source (s)	10.Jun.1938 : Electron Tube Registration List
Predecessor Tubes	6D8G

Base	Loctal-8, B8G (Sylvania, 1938) (Codex=Weo)
Was used by	Radio/TV-reception etc.
Filament	-: Indirect / -: Parallel / series AC/DC / If: 0.15 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

Philco 7A8
Howard Craven

Telefunken Werkstattbuch
Wolfgang Bauer

Sylvania Technical Manual
Peter Hoddow

Usage in Models	12= 1938 ; 2= 1939?? ; 69= 1939 ; 1= 1940? ; 24= 1940 ; 37= 1941 ; 1= 1942?? ; 1= 1942 ; 1= 1944 ; 1= 1945 ; 3= 1946? ; 18= 1946 ; 2= 1947?? ; 4= 1947 ; 21= 1948 ; 1= 1949?? ; 12= 1949 ; 1= 1950?? ; 10= 1950 ; 18= 1951 ; 2= 1952?? ; 1= 1952? ; 18= 1952 ; 1= 1953?? ; 2= 1953 ; 1= 1954? ; 6= 1954 ; 8= 9999 ;
Number of Models with this tube 278

No further Information for

7A8

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