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  1. #1
    ca
    Feb 2007
    Okanagan Valley, British Columbia, Canada
    A Compass Magnum 420 recently brought back to life. And an untested "in the wild" Teknetics.
    512

    Ever Make A Dual Coil ?


    I was browsing around eBay and saw a listing for an old "Ray Jefferson Model 100" metal detector that has a dual coil, (one 9" and one 5") that can be selected by a switch on the panel.
    http://cgi.ebay.com/METAL-MINERAL-DE...QQcmdZViewItem
    It made me wonder how practical this is and why nobody else offers it, at least nobody that I'm aware of?

    Seems to be a good idea, so long as the one coil didn't interfere with the operation of the other. Has anyone here ever tried building one of these?

    F.
    Quote of Sir Joshua Reynolds': "There is no expedient, to which a man will not resort; to avoid the real labor, of thinking."

 

 

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