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6B7M

Information - Help 
ID = 32305
       
Country:
Canada
Brand: Rogers-Majestic, Standard Radio Manufacturing, Rogers Radio Tubes; Toronto
Tube type:  Double Diode-Pentode   RF/IF-Stage   Controlling (mu) 
Identical to 6B7M
Similar Tubes
Different connections:
  6B8

Base Octal (Int.Octal, IO) K8A, USA 1935 Top contact with a cap
Was used by Radio/TV-reception etc.
Filament Vf 6.3 Volts / If 0.3 Ampere / Indirect / Parallel / series AC/DC
Dimensions (WHD)
incl. pins / tip
x x 38 mm / x x 1.50 inch
Literature Taschenbuch zum Röhren-Codex 1948/49   
 
6b7mpix.jpg
6B7M: Rogers Canada
John Albion

 
rogersdata1~~1.png
6B7M: own collection
Peter den Boer


Usage in Models 1= 1934 ; 20= 1935 ; 2= 1941?

Quantity of Models at Radiomuseum.org with this tube (valve, valves, valvola, valvole, válvula, lampe):23


Forum contributions about this tube
6B7M
Threads: 1 | Posts: 3
Hits: 2494     Replies: 2
6B7M (6B7M)
John Albion
24.Apr.10
  1

The rogers 6B7M is a 8 pin octal (K8A) based tube, all Rogers "M series" tubes are a K8A base even if the original designation type such as the 6B7 was not. See Rogers tube data sheet on our web site; pacifictv.ca (item URL below).

thank you,

John Albion

pacifictv.ca

http://pacifictv.ca/schematics/rogerstubedata.jpg

Emilio Ciardiello
25.Apr.10
  2

Dear John,

according to Sibley, some of the Rogers ‘M’ types were standard existing tubes rebased as alternate solution to the new RCA metal tubes. It is interesting to read that the sprayed conductive layer over the glass bulbs was covered with black paint to better resemble the look of the metal tubes.

Here is the complete list from ‘Tube Lore’, Supplement 3, of ‘M’ tubes, all with octal base as the 6F7M:
 

 

John Albion
25.Apr.10
  3

Hello Emilio,

 

Thank you, great information to help with some of the confusion with the Rogers "M series" tubes. What was not mentioned there is Rogers also produced the same "M series" tubes with different size grid caps which added more to the confusion. I have just up loaded two pictures of the Rogers 6K7M, one with a miniature grid cap and the other with a small grid cap.

 

thank you again,

 

John

 
6B7M
End of forum contributions about this tube

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