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1LB4

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ID = 2811
       
Country:
United States of America (USA)
Brand: Common type USA tube/semicond.
Tube type:  Vacuum Pentode   Power/Output 
Identical to 1LB4 = CV776
First Source (s)
14.Sep.1939 : Electron Tube Registration List
Base Loctal-8, B8G (Sylvania, 1938) (Codex=Woo)
Filament Vf 1.4 Volts / If 0.05 Ampere / Direct / Battery =
Tube prices 3 Tube prices (visible for members only)
Information source Essential Characteristics, GE 1973   
Taschenbuch zum Röhren-Codex 1948/49   
1lb4.png
1LB4: Courtesy Bureau Belper (De Muiderkring, Bussum), Scan Frank Philipse
Karel De Reus †
494_1.png 1LB4: Telefunken Werkstattbuch
Wolfgang Bauer
More ...
Just Qvigstad 		1lb4_techdat01.png
1LB4: Sylvania Technical Manual
Peter Hoddow
More ...
Usage in Models 1= 1940?? ; 10= 1940 ; 2= 1941? ; 12= 1941 ; 1= 1942? ; 5= 1942 ; 1= 1943 ; 1= 1945? ; 2= 1946? ; 19= 1946 ; 2= 1947?? ; 3= 1947? ; 6= 1947 ; 6= 1948?? ; 14= 1948? ; 15= 1948 ; 2= 1949?? ; 2= 1949? ; 1= 1949 ; 1= 1950?? ; 2= 1950? ; 1= 1950 ; 1= 1952?
Quantity of Models at Radiomuseum.org with this tube (valve, valves, valvola, valvole, válvula, lampe):110

Collection of

Geri Meier (CH)
Collection of a member from D
David Erali (USA)
Michael Gnaedig-Fischer (MEX)
Tor Steinnes (N)
Bruce Morgenstern (CDN)
Collection of a member from D
Collection of a member from CH
Georges Werts (B)
Peter Pfeiffer (D)
 
1lb4_klein_1.jpg

1LB4
 
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