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  • Grounding land detectors

    Eric and Mr. Bill (findmall.com/PI forum) got me thinking about improving grounding of my land detector in areas where I pick up a fair amount of interferance. There are some promising sites in my area where the rf is so bad they are almost undetectable. It seemed to me that my detector was poorly grounded (I took it completely apart) and if I found a way to route all that rf into the ground from the shielding maybe it would settle down and allow me to hunt those areas. Im thinking about building a rod I can shove in the ground with about 20 feet of cable, connected to the shield ground on my detector. Or maybe a walking stick with a ground probe on the end I could shove in the ground as I go. Has anyone experimented with better grounding of land detectors?

  • #2
    Re: Grounding land detectors

    I think literally grounding the detector to earth might mean that potential targets are also earthed with the result being reduced signal levels.
    I wonder if any contributors to this forum find a difference between plastic and metal-cased detectors , where external interference is concerned ?

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    • #3
      Re: Grounding land detectors

      You got me thinking...first dragging an earth ground probe around would be a pain. Before I go to that extreme...since the Explorer is mostly plastic maybe just an improvement in ground would yield the results I want? My modded Explorer is actually mounted on an all metal Whites S shaft, I could simply rig a ground to the shaft to test this, maybe I'll put it through a switch so I can flip back and forth to see if I detect any difference.

      >I think literally grounding the detector to earth might mean that potential targets are also earthed with the result being reduced signal levels.
      > I wonder if any contributors to this forum find a difference between plastic and metal-cased detectors , where external interference is concerned ?

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      • #4
        shielding beepers

        The better designed metal detectors achieve a good compromise between high sensitivity and immunity from electrical interference. It's a balancing act where "the devil is in the details" and in the end, high sensitivity is an invitation to electrical interference anyhow.

        Because of my commitment to my employer and co-employees, I am not willing spill the beans on everything I know about this subject. But I can point out what you already know-- that no commercial manufacturer offers a grounding rod for their metal detector in order to improve its performance. The solutions do exist, and they lie elsewhere.

        --Dave J.

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        • #5
          Re: Grounding land detectors

          LMAO!!!!

          This is just getting plain silly.

          A far easier method would be for you to connect the battery negative to the metal stem of the detector. Then, providing you have good contact with that to your skin, simply wear a pair of conductive boots.

          Wood, trees, Hmmmmmmmmm..;¬P

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