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6A8

Information - Help 
ID = 961
       
Country:
Worldwide
Brand:
Tube type:  Pentagrid-Converter (Heptode)   Pentagrid (old)   Controlling (mu) 
Identical to 6A8 = 6Q8 = 6А8
Similar Tubes
Other shape (e.g. bulb type):
  6A8G ; 6A8GT ; 6A8MG
Other class quality (otherwise equal):
  CV579
Heater different:
  11A8
Other base:
  7B8
First year 15.Aug.1935 Electron Tube Registration List starts with 234 models 1935, some with dated ads.
First Source (s)
05.Dec.1935 : - - Manufacturers Literature Data sheet
Predecessor Tubes 6A7   2A7  
Successor Tubes 6SA7   6TH8G  

Base Octal (Int.Octal, IO) K8A, USA 1935 (Codex=Ue) Top contact with a cap.
Was used by Radio/TV-reception etc.
Filament Vf 6.3 Volts / If 0.3 Ampere / Indirect / Specified voltage AND current AC/DC
Tube prices 2 Tube prices (visible for members only)
Information source Essential Characteristics, GE 1973   
Taschenbuch zum Röhren-Codex 1948/49   

6a8.png
6A8: Courtesy Bureau Belper (De Muiderkring, Bussum), Scan Frank Philipse
Anonymous 10 Collector

414.png 6A8: Telefunken Werkstattbuch
Wolfgang Bauer

More ...

Just Qvigstad
6a8.png
6A8: Lorenz Empfänger - Röhren
Anonymous 54 Collector

More ...
Usage in Models 16= 1935?? ; 58= 1935? ; 233= 1935 ; 42= 1936?? ; 115= 1936? ; 549= 1936 ; 58= 1937?? ; 73= 1937? ; 408= 1937 ; 54= 1938?? ; 95= 1938? ; 383= 1938 ; 88= 1939?? ; 64= 1939? ; 166= 1939 ; 60= 1940?? ; 31= 1940? ; 71= 1940 ; 10= 1941?? ; 13= 1941? ; 42= 1941 ; 13= 1942?? ; 12= 1942? ; 12= 1942 ; 3= 1943?? ; 2= 1943 ; 1= 1944?? ; 1= 1944? ; 5= 1944 ; 12= 1945?? ; 5= 1945? ; 14= 1945 ; 11= 1946?? ; 4= 1946? ; 38= 1946 ; 6= 1947?? ; 3= 1947? ; 18= 1947 ; 13= 1948?? ; 9= 1948? ; 9= 1948 ; 3= 1949?? ; 5= 1949 ; 55= 1950?? ; 6= 1950? ; 5= 1950 ; 3= 1951?? ; 3= 1951 ; 2= 1952?? ; 1= 1952? ; 8= 1952 ; 1= 1954?? ; 1= 1954? ; 1= 1954 ; 7= 1955?? ; 2= 1955 ; 1= 1958?? ; 1= 1958 ; 1= 1959? ; 1= 1992?? ; 1= 1992? ; 3= 9999

Quantity of Models at Radiomuseum.org with this tube (valve, valves, valvola, valvole, válvula, lampe):2931

Collection of

 
6a8_899rm750_328.jpg

6A8
 

Variants

The Arcturus metal/glass typr 6A8 tube is unusual in that it employs a glass disc instead of the conventional "pinch" for introducing the lead-in wires into the glass bulb. The disc has the wires in a circular formation. (70 Years of Radiotubes and V. Pages 99 & 100)


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