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1A7G

Information - Help 
ID = 2617
       
Country:
United States of America (USA)
Brand: Common type USA tube/semicond.
Tube type:  Pentagrid-Converter (Heptode)   Pentagrid (old) 
Identical to 1A7G = X14
Similar Tubes
Other shape (e.g. bulb type):
  1A7GT
Normally replaceable-slightly different:
  DK32_Mullard
Other class quality (otherwise equal):
  CV1800
First Source (s)
10.Jun.1938 : Electron Tube Registration List
Successor Tubes 1R5  

Base Octal (Int.Octal, IO) K8A, USA 1935 (Codex=Ut)
Filament Vf 1.4 Volts / If 0.05 Ampere / Direct / Battery =
Tube prices 2 Tube prices (visible for members only)
Literature Essential Characteristics, GE 1973   
Taschenbuch zum Röhren-Codex 1948/49   
  1a7.png
  1A7G: Courtesy Bureau Belper (De Muiderkring, Bussum), Scan Frank Philipse
Karel De Reus †
 
1a7gt~~3.jpg
1A7G: own tube collection
Hannu Alho

 
413_6_1.png
1A7G: Telefunken Werkstattbuch
Wolfgang Bauer

 
1a7_spec.png
1A7G: Grundig Rö-Tabu, zum M1, Band 3, 1948
Anonymous 15 Collector


Usage in Models 4= 1938?? ; 3= 1938? ; 56= 1938 ; 20= 1939?? ; 64= 1939? ; 366= 1939 ; 19= 1940?? ; 37= 1940? ; 193= 1940 ; 24= 1941?? ; 19= 1941? ; 44= 1941 ; 15= 1942?? ; 5= 1942? ; 6= 1942 ; 2= 1945? ; 2= 1946?? ; 2= 1946? ; 29= 1946 ; 2= 1947?? ; 1= 1947? ; 3= 1947 ; 1= 1948?? ; 2= 1948 ; 7= 1950?? ; 1= 1952?

Quantity of Models at Radiomuseum.org with this tube (valve, valves, valvola, valvole, válvula, lampe):927


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