Antique radios, Old Time Radios

7A5

Country:	United States of America (USA)		Brand:	Common type USA
			Tube type:	Beam Power Tube

Tube ID = 2990


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Identical to	7A5
Similar Tubes	Heater different: 35A5
First Source (s)	04.May.1939 : Electron Tube Registration List

Base	Loctal-8, B8G (Sylvania, 1938) (Codex=Wdb)
Was used by	Radio/TV-reception etc.
Filament	Vf 6.3 Volts / If: 0.75 Ampere / -: Indirect / -: Parallel, (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

scc
Christian Schaufelberger

Telefunken Werkstattbuch
Wolfgang Bauer

Sylvania Technical Manual
Peter Hoddow

Usage in Models (calculation each 25th of the month)	4= 1939 ; 1= 1940 ; 3= 1941 ; 1= 1948? ; 6= 1948 ; 4= 1949 ; 6= 1950?? ; 1= 1952?? ;
Number of Models at Radiomuseum.org with this tube (valve, valves, valvola, valvole, válvula, lampe): 26

No further Information for

7A5

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