Question on noise cancel
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  1. #1

    Dec 2005
    48
    2 times

    Question on noise cancel

    When you noise cancel do you hold the coil about 15" off the ground are do you point the coil at the power lines? What do you do, In the USA.

  2. #2
    us
    Dec 2006
    Montana
    Minelab Explorer SE w/SunRay X-1, X-5 and X-8 / Whites XLT / Whites GM3
    230
    2 times

    Re: Question on noise cancel

    I hold the coil off of the ground about 12". I've been noticing that when my machine starts to lose stability, I can clear it up with Noise Cancellation again. This seems to help with the following settings: (sensitivity: 20, iron mask: 29, sound: ferrous). I didn't notice the sensitivity issues when I was running with standard discrimination, conductive and sensitivity at 19.

    DB
    Focusing on user experience articles and tips!
    DetectorBase
    Metal Detecting Tips
    Let me know if you have a story to tell!!!

  3. #3

    Mar 2005
    Minelab Explorer SE/Garrett GTI 2500/ Ace 250
    6,871
    51 times

    Re: Question on noise cancel

    Quote Originally Posted by DetectorBase
    I hold the coil off of the ground about 12". I've been noticing that when my machine starts to lose stability, I can clear it up with Noise Cancellation again. This seems to help with the following settings: (sensitivity: 20, iron mask: 29, sound: ferrous). I didn't notice the sensitivity issues when I was running with standard discrimination, conductive and sensitivity at 19.

    DB

    i do the same as detectorbase.
    GTI 2500/ACE 250

  4. #4
    us
    Nov 2006
    315
    6 times

    Re: Question on noise cancel

    Ok...an uneducated question ....notice I didn't say dumb question :P

    What is noise canceling?

  5. #5
    us
    Jun 2004
    Hurlock, Maryland
    XP Deus, Excalibur II
    1,680
    68 times
    All Types Of Treasure Hunting

    Re: Question on noise cancel

    I set my coil on the ground and don,t move it until the noise canceling is done. I don,t think it will make too much difference if you hold it off the ground or not as the noise cancelling checks the 10 channels for the one with the least noise and chooses it. Noise can be another detector, over head lines, ground feed back, basically any noise. From what I can tell the only thing that may happen if you don,t run noise cancel is the number reading may be off 1 or 2 numbers and the ID may not be the correct icon if the reading is borderline between one icon or another.

    Ed D.
    Keep detecting, Keep finding, Keep digging!

    Ed Donovan

  6. #6

    Dec 2005
    48
    2 times

    Re: Question on noise cancel

    Quote Originally Posted by John S
    When you noise cancel do you hold the coil about 15" off the ground are do you point the coil at the power lines? What do you do, In the USA.
    The reason I asked this question is Sandy at minelab told me today that your to hold it at the power lines not the ground and the book said the hold the coil about a ft are so off the ground to noise cancel. I thank I'll ge with the book.

  7. #7
    us
    Nov 2006
    315
    6 times

    Re: Question on noise cancel

    Question
    When determining the location of the object, where would you first hear the beeps. (green areas represent open, and black are the coils). I'm having problems deciding where on the coil..is it the outside or inside coil that the first beep occurs?
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  8. #8
    us
    Jun 2004
    Hurlock, Maryland
    XP Deus, Excalibur II
    1,680
    68 times
    All Types Of Treasure Hunting

    Re: Question on noise cancel

    I chose the ground because that is where the coil is when in use so I thought that this would be the best way to set noise cancelling, the way you use it.

    The detection pattern is right down the center of the coil almost from fro to back. about 1" each side of center. The coil is a DD coil.

    Ed D.
    Keep detecting, Keep finding, Keep digging!

    Ed Donovan

  9. #9
    us
    Nov 2006
    315
    6 times

    Re: Question on noise cancel

    So the beeps occur in the center coil area if I understand correctly?

  10. #10
    us
    Dec 2006
    Montana
    Minelab Explorer SE w/SunRay X-1, X-5 and X-8 / Whites XLT / Whites GM3
    230
    2 times

    Re: Question on noise cancel

    Quote Originally Posted by Calworks
    So the beeps occur in the center coil area if I understand correctly?
    I notice different areas with my double Ds. If the target is on the surface, I can get three beeps. Inside edge, then center then outside edge. If the coin is down a ways, I get a pretty solid center beep. I'm also noticing that edge will tone 'good' on trash if the outside edge catches the edge of the junk target. Pinpointing and getting my targe under the center will finally return me the 'junk' tone.

    I also noticed this more with the stock 10.5 coil. I switched to SunRay 8" and the triple beep doesn't happen AS much, but still can on surface targets.

    HTH
    DB
    Focusing on user experience articles and tips!
    DetectorBase
    Metal Detecting Tips
    Let me know if you have a story to tell!!!

  11. #11

    Feb 2007
    Coventry, CT
    Minelab (2), Garrett (2), Whites (2)
    67

    'Noise Cancel' is...

    ... a system for reducing the negative influence of power lines and transformers...anything electrical. I do it at every new site before I hunt. If you have instability after that, you're probably running too much sensitivity.
    The SE manual is confusing - you hit the button and let it go, while holding the coil still, flat to the ground - I do 2 feet above.
    Dave G.

 

 

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