ground composition vs target question
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Thread: ground composition vs target question

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  1. #1
    Jan 2018
    North Atlanta
    Equinox 800, 6" coil, stock coil, 15" coil, ProFind-35 pinpointer, Simplex, Vanquish 540. sold: AT Pro with stock coil, Nel Thunder, Garrett 5" x 8" coil, Garrett Carrot, Simplex. Author of "The
    1057 times
    Relic Hunting

    ground composition vs target question

    Ok, I think I have seen the answer to this question but cannot remember. On the Equinox 800 I think I read somewhere the tones and TID's are based on the difference between the ground and target.
    So if detectorist A is hunting in ground with more mineral content than detectorist B would not a coin like and Indian head penny give different tones and TID's for each detectorist? Assuming the coin is flat and at the same depth and the both detectorist have the exact same factory settings and setup.

    If this is true then you would have to take user created and posted TID charts with a grain of salt (which I do anyway).

  2. #2
    Charter Member
    Master of My Domain

    Jul 2015
    Near Ground Zero for Insanity
    XP Deus with HF/x35 Coils and Mi6 Pinpointer/ML Equinox 600/800/ML Tarsacci MDT 8000 GPX 4800/Garrett ATX/Fisher F75 DST/Tek G2+/Delta/Whites MXT/Nokta Simplex/Garrett Carrot
    7577 times
    All Types Of Treasure Hunting
    On the Equinox, I have found the TIDs to be consistent regardless of whether you have a sat ground balance. Less than optimal ground balance really only affects detection depth (due to the higher ground noise) and/or TID stability on swings which is also a funtion of whether you are at the edge of detection depth.

    Regardless of mode, when in Multi IQ operation, the TIDs are pretty consistent between modes. TID varies slightly if you are in single frequency, however, with TID rising slightly with higher frequencies (haven't studied this closely though because frankly I don't obsess over exact TID numbers as I focus on repeatability and stability and general trends in the indicated conductivity number all as a backup to the audio).

    Here's my committed to memory TID chart:

    Solid 6 or above through 10 - possible gold jewelry (though practically any number from 1 up to low 20's is fair game depending on size and composition of the target. Round juice bottle
    freshness seals are a solid 7 and drive me nuts).

    12 - 15 Pull Tabs

    Solud 13 - Nickels (with rare variation +/-)

    15 - 17 Brass Buttons

    16 -19 Lead Minor Balls

    20/21 - Zincolns

    22/23 - Copper Pennies

    24-27 - Dimes

    27 - Low 30's Small Silver Jewelry

    Low 30's - Quarters

    Mid to High 30's - Big Silver
    Last edited by vferrari; Aug 23, 2018 at 09:30 AM.
    "The future ain't what it used to be..."

    "Sit down and shut up, will ya? Try not to live up to all my expectations."

  3. #3
    I'm a greater believer in luck, and I find the harder I work the more I have of itĒ ― Thomas Jefferson

    Apr 2016
    Abita Springs La....Born in New Orleans
    EQUINOX 800
    26081 times
    Metal Detecting
    Banner Finds (1)
    V PM me those numbers. A 1/10 oz American gold eagle coin hits a a soiled 16 if your curious. Click image for larger version. 

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  4. #4
    Charter Member
    Gare or Gary

    Dec 2012
    Canton Ohio Area
    1818 times
    All Types Of Treasure Hunting
    Honorable Mentions (2)
    Is that with the staples in the coin holder
    vferrari and RustyGold like this.
    Only TWO things in the world that spook my horses THINGS THAT MOVE and THINGS THAT DON'T MOVE !!!

  5. #5
    Charter Member

    Jan 2014
    Central Florida
    EQX 800; CTX 3030; Excal II
    1369 times
    Beach and Shallow Water Hunting
    Banner Finds (1)
    Honorable Mentions (1)
    Agree with vferrari. In all the testing I’ve done with the EQX in a variety of environments here in Florida, the VDI or TID has remained constant.
    Last edited by ColonelDan; Oct 22, 2018 at 06:48 PM.
    vferrari likes this.
    ~The Challenge: Big Beach; Little Coil; Tiny Targets~

    ~"Simplicity is the ultimate sophistication"~ Leonardo da Vinci

    ~Pre-determined settings serve only to get you in the ballpark. Itís up to you to pick the best seat~

  6. #6

    Feb 2007
    264 times
    wet dirt
    it was a 16 and just how dirty was it
    if it wasn't for flashbacks. i would have no memory at all



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