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12K7M

Information - Help 
ID = 39378
       
Country:
Canada
Brand: Rogers-Majestic, Standard Radio Manufacturing, Rogers Radio Tubes; Toronto
Tube type:  Vacuum Pentode   RF/IF-Stage   Controlling (mu) 
Identical to 12K7M
Similar Tubes
Other shape (e.g. bulb type):
  12K7GT
Normally replaceable-slightly different:
  12K7MT

Base Octal (Int.Octal, IO) K8A, USA 1935
Filament Vf 12.6 Volts / If 0.15 Ampere / Indirect / Parallel / series AC/DC
Description

Canadian (Rogers) black metal-sprayed type.

 
 
12k7mpix.jpg
12K7M: Rogers 12K7M Canada
John Albion

 
374_33.png
12K7M: Telefunken Röhrenhandbuch
Wolfgang Bauer

 

Usage in Models 20= 1939 ; 6= 1940? ; 39= 1940 ; 1= 1941? ; 1= 1941

Quantity of Models at Radiomuseum.org with this tube (valve, valves, valvola, valvole, válvula, lampe):67


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