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1C7M

Information - Help 
ID = 41183
       
Country:
Canada
Brand: Rogers-Majestic, Standard Radio Manufacturing, Rogers Radio Tubes; Toronto
Tube type:  Pentagrid-Converter (Heptode)   Pentagrid (old)   Controlling (mu) 
Identical to 1C7M = 1C7G

Base Octal (Int.Octal, IO) K8A, USA 1935
Filament Vf 2 Volts / If 0.12 Ampere / Direct / Battery =
Literature - - -   
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1c7mpix.jpg
1C7M: Rogers 1C7M Canada
John Albion

 
1c7m_so.png
1C7M: ARRL Handbook 1972
Michael Schlör

 

Usage in Models 18= 1937 ; 25= 1938

Quantity of Models at Radiomuseum.org with this tube (valve, valves, valvola, valvole, válvula, lampe):43


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