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1S4

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ID = 3087
       
Country:
United States of America (USA)
Brand: Common type USA tube/semicond.
Tube type:  Vacuum Pentode   Power/Output 
Identical to 1S4 = DL91
Similar Tubes
Other class quality (otherwise equal):
  CV783 ; VT-210
Heater different:
  1S4T
First year 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)
Filament Vf 1.4 Volts / If 0.1 Ampere / Direct / Battery =
Tube prices 4 Tube prices (visible for members only)
Literature Essential Characteristics, GE 1973   
Taschenbuch zum Röhren-Codex 1948/49   
  1s4.png
  1S4: Courtesy Bureau Belper (De Muiderkring, Bussum), Scan Frank Philipse
Karel De Reus †
 
_dsc0498.nef.jpg
1S4: S.A.C.
Stig Comstedt

 
582.png
1S4: Telefunken Werkstattbuch
Wolfgang Bauer

 
1s4_techdat01.png
1S4: Sylvania Technical Manual
Peter Hoddow


Usage in Models 1= 1940?? ; 2= 1940? ; 14= 1940 ; 6= 1941?? ; 5= 1941? ; 11= 1941 ; 2= 1942?? ; 1= 1942? ; 3= 1942 ; 1= 1945 ; 1= 1946?? ; 1= 1946 ; 1= 1947? ; 5= 1947 ; 2= 1949?? ; 6= 1950?? ; 1= 1951?? ; 1= 1951 ; 1= 1953?? ; 1= 1953? ; 1= 1953 ; 1= 1955 ; 1= 1960?

Quantity of Models at Radiomuseum.org with this tube (valve, valves, valvola, valvole, válvula, lampe):69


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