Antique radios, Old Time Radios

1S4

Country:	United States of America (USA)		Brand:	Common type USA
			Tube type:	Vacuum Pentode Power/Output

Tube ID = 3087


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Identical to	1S4 = DL91 = VT-210
Similar Tubes	Heater different: 1S4T
First Series	1940 Tube leaflet collection E.Erb Analysis by original leaflets
First Source (s)	13.Nov.1939 : Electron Tube Registration List

Base	Miniatur-7-Pin-Base B7G, USA 1940 (Codex=Zwo)
Was used by	Radio/TV-reception etc.
Filament	Vf 1.4 Volts / If: 0.1 Ampere / -: Direct / -: Battery = /
Tube prices	1 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 Karel De Reus

C.M.
Mario Coelho

Telefunken Werkstattbuch
Wolfgang Bauer

Sylvania Technical Manual
Peter Hoddow

Usage in Models (calculation each 25th of the month)	1= 1940?? ; 1= 1940? ; 5= 1940 ; 8= 1941?? ; 9= 1941 ; 2= 1942?? ; 1= 1942? ; 2= 1942 ; 1= 1946?? ; 1= 1946 ; 3= 1947 ; 1= 1949?? ; 1= 1950?? ; 1= 1951?? ; 1= 1951 ; 1= 1952?? ; 1= 1953?? ; 1= 1960? ;
Number of Models at Radiomuseum.org with this tube (valve, valves, valvola, valvole, válvula, lampe): 41

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1S4

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