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  1. #1

    Smile Air Chute - Cooling a vintage transmitting amp

    We installed a bigger vacuum tube into a vintage Collins radio amp and I needed a little more airflow so I welded up a heat extractor.

    Have a look....

    Let me know what you think.

  2. #2
    Join Date
    Jun 2009


    nice video but why be so close and burn your helmet ?

  3. #3


    Quote Originally Posted by dbardos View Post
    nice video but why be so close and burn your helmet ?
    I have to learn to back up, maybe I need to get the magnifier.

  4. #4
    Join Date
    Feb 2008


    I was following it right up to the point where you were tuning through 80m at which point I thought "oh no... not another Art Bell ham."

    80% of failures are from 20% of causes
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