Antique radios, Old Time Radios

7H7

Country:	United States of America (USA)		Brand:	Common type USA
			Tube type:	Vacuum Pentode RF/IF-Stage Controlling (mu)

Tube ID = 2728


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Identical to	7H7 = VT-190
Similar Tubes	Heater different: 14H7 Other base: 6SG7
First Source (s)	20.Mar.1940 : Electron Tube Registration List
Successor Tubes	6BA6

Base	Loctal-8, B8G (Sylvania, 1938) (Codex=W)
Was used by	Radio/TV-reception etc.
Filament	Vf 6.3 Volts / If: 0.3 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

P.ST
Peter Steffen

Telefunken Werkstattbuch
Wolfgang Bauer

Sylvania Radio Tubes 1952
Daniel Consales

Usage in Models (calculation each 25th of the month)	7= 1940 ; 2= 1941?? ; 6= 1941? ; 28= 1941 ; 8= 1942?? ; 5= 1942? ; 16= 1942 ; 7= 1945? ; 1= 1945 ; 12= 1946?? ; 1= 1946? ; 31= 1946 ; 5= 1947?? ; 15= 1947? ; 18= 1947 ; 1= 1948? ; 29= 1948 ; 2= 1949?? ; 2= 1949 ; 1= 1950?? ; 1= 1950? ; 21= 1950 ; 1= 1952?? ; 1= 1957 ; 1= 1959 ;
Number of Models at Radiomuseum.org with this tube (valve, valves, valvola, valvole, válvula, lampe): 222

No further Information for

7H7

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