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1A7G

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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)
Information source 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 †
413_6_1.png 1A7G: Telefunken Werkstattbuch
Wolfgang Bauer
More ...
Just Qvigstad 		1a7_spec.png
1A7G: Grundig Rö-Tabu, zum M1, Band 3, 1948
Anonymous 15 Collector
More ...
Usage in Models 4= 1938?? ; 3= 1938? ; 56= 1938 ; 20= 1939?? ; 66= 1939? ; 374= 1939 ; 21= 1940?? ; 40= 1940? ; 198= 1940 ; 24= 1941?? ; 21= 1941? ; 43= 1941 ; 15= 1942?? ; 5= 1942? ; 6= 1942 ; 1= 1944?? ; 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):949

Collection of

Vitor Oliveira (P)
Christian Schaufelberger (CH)
Keith Ellison (AUS)
Júlio Branco (P)
Bruce Morgenstern (CDN)
Peter Pfeiffer (D)
 
1a7g_marconi_rmf.jpg

1A7G
 
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