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Finished MPP REV E with a Diy 10" mono coil

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  • Finished MPP REV E with a Diy 10" mono coil

    Hi everyone,

    Just thought I'd share some results from my recently completed mpp rev e.

    Having no previous experience and very much a beginner with circuits I found this build challenging and at sometimes very frustrating, how ever I managed to complete a working mpp rev e with only a few errors and blown components along the way.

    The finished detector including coil weighs only 1.4kg thanks to a light weight carbon fiber housing which I have connected to rx lead and from what results I have I believe it works as a half decent Sheild.

    The 10 inch coil is wound from magnet wire I salvaged from a microwave. It has 3 strands not sure on wire size but they are very thin and 26 turns. All housed in a fully carbon fibre ring with supports aswell. I currently have it critically dammped at 1150 ohms although i know it may be the wrong value but I have yet to fully understand my PC base ossiliscope and there is just way too much noise in my area so I have no idea what signal I should be looking for However it works😀


    Air test.. Sampling at 6us are the following results

    Australian 50c coin --- 45-47cm

    Australian 10c coin --- 35-37cm

    Australian 2$ coin --- 33-35cm

    Small gold chain --- 19-21cm

    women's gold ring --- 33-35cm



    Correct me if I'm wrong but I believe that these results aren't too bad. I played around making about a dozen coils in all sorts of designs but this one beats them all by quite alot,
    anybody else getting these distances from a 10inch mono coil or something similar?.

    Pictures below are of objects tested and finished detector.
    Attached Files

  • #2
    Good job

    Comment


    • #3
      Yes, good job and the distances seems very good.

      Comment


      • #4
        Can you tell me what inductance and resistance your coil ended up being?

        How did you make the carbon fibre ring? Interested that you did not find the lack of gap effect performance, your carbon must not conduct too well ..

        Comment

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