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7L7

Information - Help 
ID = 3898
       
Country:
United States of America (USA)
Brand: Common type USA tube/semicond.
Tube type:  Vacuum Pentode   RF/IF-Stage 
Identical to 7L7
Similar Tubes
Heater different:
  7G7
First Source (s)
01.Mar.1940 : Electron Tube Registration List
Successor Tubes 6AU6  

Base Loctal-8, B8G (Sylvania, 1938) (Codex=W)
Filament Vf 6.3 Volts / If 0.3 Ampere / Indirect / Parallel / series AC/DC
Tube prices 3 Tube prices (visible for members only)
Information source Essential Characteristics, GE 1973   
Taschenbuch zum Röhren-Codex 1948/49   
  7l7.png
  7L7: Courtesy Bureau Belper (De Muiderkring, Bussum), Scan Frank Philipse
Michael Schlör
 
7l7~~2.jpg
7L7: 1940
Tor Steinnes

 
358_6.png
7L7: Telefunken Werkstattbuch
Wolfgang Bauer

 
7l7_techdat01.png
7L7: Sylvania Technical Manual
Peter Hoddow


from Just Qvigstad

Usage in Models 7= 1940 ; 1= 1941 ; 2= 1946?? ; 1= 1946

Quantity of Models at Radiomuseum.org with this tube (valve, valves, valvola, valvole, válvula, lampe):11


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