V3i Polar Plot
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Thread: V3i Polar Plot

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  1. #1
    us
    Jan 2011
    6

    V3i Polar Plot

    Just started playing with this. I have a test garden so I have known coins at known depths. When I swing the V3i over the targets, the VDI is dead on. The icons are dead on. The pinpoint depth is dead on. The graph is dead on. Yet, the polar plot is not very conclusive at all. In fact if I was in the field, I likely would have passed on these targets. Anyone hafve any thoughs on why the polar plot would be so different than all the other info ? Is there some setting that can be throwing this off ?

    Thanks.

  2. #2
    Charter Member
    us
    Travis Mitchell

    Feb 2016
    Elizabethtown, IN
    XP Deus ORX, MX5, V3i, Equinox, Tesoro Vaq, F22
    437
    637 times
    All Types Of Treasure Hunting
    Click image for larger version. 

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    This may help. The PP is accurate up to about 6" and if the coins are recently buried I would think that may also affect it. It's a nice feature and way ahead of its time but I wouldn't rely on it as it is time-consuming. I use it less and less the more familiar I am getting with the V3i. I have learned to trust the VDI, audio and bars and usually between those 3 I can tell. On shallow targets at the park the PP can help but you will get very similar readings on pull-tabs and Nickels.

    It can also be difficult to get a good reading based on your swing speed. I sometimes have to go slow over the target once and if that doesn't work I will sweep it once more faster to get a clean audible tone before the PP reading.

  3. #3
    us
    Jan 2011
    6
    Thanks. I've noticed the same thing re swing speeds in the test garden. The coins were burried more than 5 or 6 years ago so they should be giving accurate readings from an age perspective.

  4. #4
    Charter Member
    us
    HMFWIC

    Nov 2007
    Warner Robins, GA
    Whites Surf PI, Whites V3i, Minelab Equinox 800
    124
    81 times
    All Types Of Treasure Hunting
    I like Polar plot but like previously stated, its only good up to about 6 inches in depth. I like the colored bars. Make sure you do 4 things before using the V3i.

    1) Ground Balance
    2) Check for EMI interference, switch channels if you need to.
    3) Ground Prob to check for ground mineralization
    4) Go to Sensitivity Probe and see if you need to tweak RX Gain by looking at Signal and Noise numbers.

    Last I would make sure I was hunting in 5Hz if mineralization is low...and use a slow coil swing. The Preset is 10Hz Band Pass.
    Never play Leapfrog with a Unicorn!

  5. #5

    Jun 2019
    New Jersey
    Whites DFX Whites Spectra V3i
    7
    8 times
    All Types Of Treasure Hunting
    Hi there!

    I use Polar Plot all the time, and would recommend it for anyone using the Spectra V3i. It's a pretty handy feature that gives that extra bit of confidence that whatever is piquing your interest, is worth the dig. I know when I first started out with my Whites DFX I dug up everything, and got pretty discouraged. That was due to inexperience, an over-abundance of optimism, and poorly-picked locations. I am more moderate these days

  6. #6
    us
    Member of the 1500's club

    Jul 2016
    Rocky Point, NY
    Whites Spectra V3I
    276
    284 times
    All Types Of Treasure Hunting
    Today I found a descent sized coin spill and the VDI, tone, and Polar Plot combo nailed nickels with incredible accuracy in Hi Pro mode.

  7. #7
    us
    Jan 2012
    Oregon Coast
    White's V3i, White's MXT, and White's Eagle Spectrum Cleangold sluice & prospectors pan, EZ-Gold Pan, and custom cleanup sluice.
    1,454
    2154 times
    Beach mining, Metal detecting, Trading.
    Polar Plot also helps you separate good gold targets from foil targets......
    We hold these truths to be self-evident: that all men are created equal; that they are endowed by their Creator with certain unalienable rights; that among these are life, liberty, and the pursuit of happiness. Thomas Jefferson

    Which is also why we have the second
    amendment.

  8. #8
    us
    Member of the 1500's club

    Jul 2016
    Rocky Point, NY
    Whites Spectra V3I
    276
    284 times
    All Types Of Treasure Hunting
    Quote Originally Posted by johnedoe View Post
    Polar Plot also helps you separate good gold targets from foil targets......
    Wouldn’t it tell you the same thing using the spectrograph?

  9. #9
    us
    Jan 2012
    Oregon Coast
    White's V3i, White's MXT, and White's Eagle Spectrum Cleangold sluice & prospectors pan, EZ-Gold Pan, and custom cleanup sluice.
    1,454
    2154 times
    Beach mining, Metal detecting, Trading.
    No...
    The polar plot will show foil as a bit more erratic plot and a gold ring has a cleaner plot.
    We hold these truths to be self-evident: that all men are created equal; that they are endowed by their Creator with certain unalienable rights; that among these are life, liberty, and the pursuit of happiness. Thomas Jefferson

    Which is also why we have the second
    amendment.

  10. #10
    us
    Member of the 1500's club

    Jul 2016
    Rocky Point, NY
    Whites Spectra V3I
    276
    284 times
    All Types Of Treasure Hunting
    Quote Originally Posted by johnedoe View Post
    No...
    The polar plot will show foil as a bit more erratic plot and a gold ring has a cleaner plot.
    Interesting. Thank you.

 

 

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