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6A7

Country:  United States of America (USA)      Brand:  Common type USA tube 
  Tube type:  Pentagrid-Converter (Heptode)   Pentagrid (old)   Controlling (mu) 
Tube ID = 2687
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Identical to 6A7 = Ut6A7 = Ut-6A7 = 6A7E = G-6A7 = CV1870
Similar Tubes Other shape (e.g. bulb type):
 6A7S; G-6A7-S
Heater different:
 2A7
Other base:
 6A7_Octal; 6A8G
Multiple differences or of other kind:
 MH1118; UPG105
First year   1933 -- Collector info (Sammler)
First Source (s) Mar.1933 : The AWA Review Vol. 7, 1992.
Successor Tubes 6A8   6A8G   6A8GT  
Base 7-Pin-Base U7A = small, old, USA (Codex=Mh) Top contact with a cap
Filament Vf 6.3 Volts / If: 0.3 Ampere / -: Indirect / -: Parallel / series AC/DC /
Tube prices 0 Tube prices (visible for members only)
Literature Essential Characteristics, GE 1973   
Taschenbuch zum Röhren-Codex 1948/49   

  6a7.gif
  6A7: Courtesy Bureau Belper (De Muiderkring, Bussum), Scan Frank Philipse
Michael Schlör
6a7_1r.jpg
6A7: Collection JR
Jacob Roschy
 
491_1.png
6A7: Telefunken Werkstattbuch
Wolfgang Bauer
 
6a7_techdat01.png
6A7: Sylvania Technical Manual
Peter Hoddow
Usage in Models   32= 1933?? ; 101= 1933? ; 236= 1933 ; 61= 1934?? ; 123= 1934? ; 546= 1934 ; 113= 1935?? ; 143= 1935? ; 774= 1935 ; 118= 1936?? ; 176= 1936? ; 726= 1936 ; 131= 1937?? ; 118= 1937? ; 772= 1937 ; 191= 1938?? ; 86= 1938? ; 520= 1938 ; 120= 1939?? ; 77= 1939? ; 188= 1939 ; 91= 1940?? ; 48= 1940? ; 65= 1940 ; 67= 1941?? ; 19= 1941? ; 6= 1941 ; 50= 1942?? ; 27= 1942? ; 6= 1942 ; 1= 1943?? ; 2= 1943 ; 4= 1945?? ; 1= 1946?? ; 2= 1946? ; 2= 1946 ; 12= 1947?? ; 2= 1947 ; 1= 1948?? ; 2= 1948 ; 1= 1949?? ; 23= 1950?? ; 2= 1952?? ; 2= 1952? ; 6= 1952 ; 1= 1953 ; 1= 1956 ; 1= 9999
Number of Models at Radiomuseum.org with this tube (valve, valves, valvola, valvole, válvula, lampe):   5797
Forum contributions about this tube
6A7    
Threads: 1 | Posts: 1
Hits: 976     Replies: 0
6A7 (6A7)
Reinhard Hanschke
14.Aug.07 		  1
6A7 (6A7) 

Neupreis 1938: 57,00 FFR. Lit.: Catalog der Fa. MANUFRANCE (MF) von 1938.
 
6A7    
End of forum contributions about this tube
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