Tubes Asylum

• Look like some I've got branded Tungsol - Steve O 12:49:09 07/25/02 (1)
  In Reply to: Need help ID these 6CG7 tubes posted by bte on July 25, 2002 at 11:11:04:

  Have no idea who actually made them.
  
  

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  • solved - BTE 20:47:02 07/25/02 (0)
    In Reply to: Look like some I've got branded Tungsol posted by Steve o on July 25, 2002 at 12:49:09:

    That's it!

    Thanks for the photos. Definately Tong-sol.

    Thanks for clearing that up
    
    

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• Re: Need help ID these 6CG7 tubes - Jim McShane 12:19:58 07/25/02 (0)
  In Reply to: Need help ID these 6CG7 tubes posted by bte on July 25, 2002 at 11:11:04:

  They look like GE, Sylvania or Westinghouse (USA Westinghouse). NOT RCA. I've never seen an RCA with the vertical rib down the center of the plate, period. If there's not etched dots in the glass I'd bet Sylvania or Westinghouse.
  

  • Jim's Citation Amp & Vacuum Tube Pages

  
  

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• Re: Need help ID these 6CG7 tubes - jdarg 11:25:37 07/25/02 (5)
  In Reply to: Need help ID these 6CG7 tubes posted by bte on July 25, 2002 at 11:11:04:

  They sure look like GE manufacture from what I can tell of the pics (would be nice if the pics were bigger though) and I've got a large collection of 6CG7s to compare to. The squareness of the plates in the middle is typical of all my GE ones whereas all my RCA's are pretty much flat. -jd

  
  
  

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  • Re: Need help ID these 6CG7 tubes - BTE 12:18:57 07/25/02 (4)
    In Reply to: Re: Need help ID these 6CG7 tubes posted by jdarg on July 25, 2002 at 11:25:37:

    I enlarged them for you. Little fizzy but not too bad.

    I really don't think they're GEs as there are no 'dots' and I compared them to the GE's I have. But who knows. Maybe special run for the military?

    Thanks for helping
    
    

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    • Re: Need help ID these 6CG7 tubes - jdarg 06:25:44 07/26/02 (0)
      In Reply to: Re: Need help ID these 6CG7 tubes posted by bte on July 25, 2002 at 12:18:57:

      Thanks but I still can't make out the plate structure very well. Is there anything on the bottom of the tube - an etched #, etc.?

      -jd
      
      
      

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    • Re: Dots? - Jeff Starr 17:25:08 07/25/02 (2)
      In Reply to: Re: Need help ID these 6CG7 tubes posted by bte on July 25, 2002 at 12:18:57:

      Hi, where on these tubes do you look for the dots?
      Jeff
      
      

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      • Re: Dots? - BTE 20:45:57 07/25/02 (1)
        In Reply to: Re: Dots? posted by Jeff Starr on July 25, 2002 at 17:25:08:

        They're very visible. generally in a verticle row below the tube number.
        
        

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        • Re: Dots? - jdarg 06:29:11 07/26/02 (0)
          In Reply to: Re: Dots? posted by bte on July 25, 2002 at 20:45:57:

          I have GE tubes w/out the dots - anyone happen to know what year they started incorporating that coding?

          The dots seem to hold up well. I've got tubes with everything rubbed off except the dots, so its probably not likely that it used to have dots and they rubbed off. I don't think the lack of dots proves much, other than its probably not a -certain vintage- of GE. -jd
          
          
          

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