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6A7M

Information - Help 
ID = 32304
       
Country:
Canada
Brand: Rogers-Majestic, Standard Radio Manufacturing, Rogers Radio Tubes; Toronto
Tube type:  Pentagrid-Converter (Heptode)   Pentagrid (old)   Controlling (mu) 
Identical to 6A7M
Similar Tubes
Other shape (e.g. bulb type):
  6A8G
First Source (s)
Jun.1936 : Electron Tube Registration List
Base Octal (Int.Octal, IO) K8A, USA 1935 Top contact with a cap.
Filament Vf 6.3 Volts / If 0.3 Ampere / Indirect / Specified voltage AND current AC/DC
Description like a 6A8G with metal spray shield 
Information source - - -   
Taschenbuch zum Röhren-Codex 1948/49   
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- - -
6a7m_so.png 6A7M: ARRL Handbook 1972
Anonymous 10 Collector

Just Qvigstad 		rogersdata1.png
6A7M: own collection
Peter den Boer
Usage in Models 1= 1934 ; 1= 1935? ; 40= 1935 ; 7= 1936? ; 32= 1936 ; 53= 1937 ; 2= 1938? ; 5= 1938 ; 3= 1939? ; 9= 1939
Quantity of Models at Radiomuseum.org with this tube (valve, valves, valvola, valvole, válvula, lampe):153

Collection of

Bruce Morgenstern (CDN)
 
6a7m_rogers_rmf.jpg

 
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