Is 45 detection depth possible with this unit?
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  1. #1

    Feb 2019
    41
    26 times
    Cache Hunting

    Is 45' detection depth possible with this unit?

    Makro Deephunter 3D
    https://www.noktadetectors.com/metal...deephunter-3d/

    There are claims that the larger 39.5" x 23.5" search coil for this unit can reach depths of 45 feet on larger metallic objects. Can anyone with firsthand experience or technical knowledge weigh in?

    There are so many companies in Turkey these days using bad business practices to sell their products (i.e. "Made in Germany" when in fact made in Turkey or China, paying highly rated reviewers to post false reviews, exaggerated capabilities etc) so unfortunately one is unable to take this company's word for it. A couple years back I spent over $4k on the "Makro Jeohunter 3D Dual System" and found it to be extremely overpriced. The "perfect metal discrimination" and metal identification capabilities claimed by the company were proven to be a total joke time and time again. I lost count how many times the screen indicated "GOLD!" and it ended up being rotten pieces of steel or rusted aluminum. In the end I realized that literally everything displayed on the fold out screen was a total waste of time.

    But now the company seems to claim they have made a technological breakthrough. If this unit can really penetrate 45 feet of earth with a 39.5" x 23.5" search coil then for this price it seems like a dream machine. People seem to like the Nokta Invenio and others. So of course I want to believe.
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  2. #2
    Charter Member
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    Fly Navy!

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    1st - I noticed this was your very first post - so, Welcome Aboard msolomon! You didn't list your state (or country) in your profile. So, you might consider jumping over to Sub-Forum: Select Your Area.... and selecting location information (i.e., clubs, hunts, finds, legends, maps, etc.) directly related to your state (or country).
    2nd - You might consider posting this question on Brands > Nokta and Makro
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  3. #3
    us
    Mar 2011
    San Diego
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    Sounds like snake oil to me. All the detectors I'm aware of only show relative conductivity, not specific metals. Any detection at that depth would have to be a HUGE target.....maybe the size of a car or bigger. Who would want to dig that deep on a guess? The other question that needs to be contemplated is, why would anyone bury something that deep? Is this a landfill?
    msolomon likes this.
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  4. #4

    Mar 2007
    Salinas, CA
    Explorer II, Compass 77b, Tesoro shadow X2
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    Banner Finds (4)
    Why not just git yourself a TM 808 ?

    Yes, the advertisement blitz/glitz that tries to imply that you can tell gold vs other metals, or tell "shape" (that's anything beyond giant blotches) is nothing but advertising hype and blitz.
    msolomon likes this.

  5. #5
    us
    Feb 2014
    Ohio and Florida
    CTX3030 w 11" and 17" DD coils, Minelab Excalibur II w 10" coil, Equinox 800 w 11" and 15" coils, Troy Shadow x2 w 7" coil, Pro Find 35 Pointer Vibra-Tector 730 w 4" coil, Fisher F-Pulse Pointer
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    A general rule of thumb is something like the detector can detect targets in terms of depth equal to the size of the coil; 7" coil - 7" deep, 11" coil - 11"deep, 17" coil - 17" deep, you get the picture. So, if it even works, I'd predict that, given coil size, it will go about 40", more or less. Of course, the bigger the target the deeper it can be detected. But 14 times more deep (to get to 45')?
    msolomon likes this.
    Metal Detecting Goal in Life is to Find Wife a 2ct Diamond Ring (so she'll be quiet about all my metal detecting).

  6. #6
    Charter Member
    us
    TerrysKnifeStore.com

    May 2010
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    Quote Originally Posted by msolomon View Post
    Makro Deephunter 3D
    https://www.noktadetectors.com/metal...deephunter-3d/

    There are claims that the larger 39.5" x 23.5" search coil for this unit can reach depths of 45 feet on larger metallic objects. Can anyone with firsthand experience or technical knowledge weigh in?

    There are so many companies in Turkey these days using bad business practices to sell their products (i.e. "Made in Germany" when in fact made in Turkey or China, paying highly rated reviewers to post false reviews, exaggerated capabilities etc) so unfortunately one is unable to take this company's word for it. A couple years back I spent over $4k on the "Makro Jeohunter 3D Dual System" and found it to be extremely overpriced. The "perfect metal discrimination" and metal identification capabilities claimed by the company were proven to be a total joke time and time again. I lost count how many times the screen indicated "GOLD!" and it ended up being rotten pieces of steel or rusted aluminum. In the end I realized that literally everything displayed on the fold out screen was a total waste of time.

    But now the company seems to claim they have made a technological breakthrough. If this unit can really penetrate 45 feet of earth with a 39.5" x 23.5" search coil then for this price it seems like a dream machine. People seem to like the Nokta Invenio and others. So of course I want to believe.
    Where is this claim made (45-feet of depth)? This unit can see a car at around Nine-Meters (19-20 feet). Saw it tested in a parking lot.

  7. #7
    us
    Feb 2014
    Ohio and Florida
    CTX3030 w 11" and 17" DD coils, Minelab Excalibur II w 10" coil, Equinox 800 w 11" and 15" coils, Troy Shadow x2 w 7" coil, Pro Find 35 Pointer Vibra-Tector 730 w 4" coil, Fisher F-Pulse Pointer
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    Also, regarding your comment about aluminum: no detector can tell you that there is gold down there. Aluminum (depending on size, weight, shape and points) will give the same numbers or sounds, regardless of machine, as gold. If anyone knows of a metal detector out there that can discriminate out aluminum but not gold, please let me know. My CTX 3030 is one of the best discriminating machines out there, but it is helpless when it comes to aluminum. And if you think for a moment that by discriminating out 12:15-23 (pull tab territory) on the CTX would help...well, sorry, try again. I've found gold throughout this range. FYI
    msolomon and Tom_in_CA like this.
    Metal Detecting Goal in Life is to Find Wife a 2ct Diamond Ring (so she'll be quiet about all my metal detecting).

  8. #8

    Feb 2019
    41
    26 times
    Cache Hunting
    Quote Originally Posted by Terry Soloman View Post
    Where is this claim made (45-feet of depth)? This unit can see a car at around Nine-Meters (19-20 feet). Saw it tested in a parking lot.
    They are telling all their distributors that the large search coil can reach 14 meters/45 feet on long time buried metallic objects because a magnetic field is created over time. I'm friends with the distributor in my area and have came across the same claim on various other websites (metaldetector.com etc). This detector is VLF, not pulse induction. That's why I thought it could be possible to get a hit at those depths using the 39.5" x 23.5" search coil. You hear stories of some larger caches being recovered at greater depths so I thought it would be nice to have that kind of penetration capability. I own the White's TM 808 and while its a great machine for the price I know for a fact it doesn't get any where near 45 feet down. One thing I have noticed is that it will penetrate much deeper on metal objects that have been buried 50+ years. The signal can be captured while scanning from certain directions, I have had better results scanning from south to north for instance. Which leads me to believe the claim that its possible to get a signal from deeper, longer buried objects that have formed a magnetic field. If you saw it get a car at 20' that is promising since the car could not have been buried for long. Are you talking air test or did they bury the car? Thanks.
    Terry Soloman likes this.

  9. #9
    Charter Member
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    TerrysKnifeStore.com

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    Yep, the excavator dug a 25 -30 foot deep hole, they dumped a 1970s Volkswagon Beetle junker in the hole, then reburied it and ran the excavator over it a few dozen times to compact the dirt. Next day they tested the machine. This took place just outside Stuttgart, Germany, about 8-months ago as a demonstration for dealers.

    I agree on the "Halo Effect" surrounding long buried metal. Wet ground, mild soils, everything makes a difference.

  10. #10

    Feb 2019
    41
    26 times
    Cache Hunting
    Quote Originally Posted by Terry Soloman View Post
    Yep, the excavator dug a 25 -30 foot deep hole, they dumped a 1970s Volkswagon Beetle junker in the hole, then reburied it and ran the excavator over it a few dozen times to compact the dirt. Next day they tested the machine. This took place just outside Stuttgart, Germany, about 8-months ago as a demonstration for dealers.

    I agree on the "Halo Effect" surrounding long buried metal. Wet ground, mild soils, everything makes a difference.
    Ok, yea that's pretty good for a car buried the day before. You can get the same result with a 1 x 1 meter coil on a PI machine for half the price (https://kts-electronic.com/en/metal-...ulse-ar-3.html). But can you get the same increase in depth for longer buried objects with a PI unit? Anyone know?
    Last edited by msolomon; Mar 01, 2019 at 07:25 PM.

  11. #11
    Charter Member
    us
    TerrysKnifeStore.com

    May 2010
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    Sure! The pulse decay is stunted by the Halo conductivity.

  12. #12
    Charter Member
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    Welcome to the forum from Port Allegheny, Pennsylvania
    msolomon likes this.
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  13. #13
    XLV
    XLV is offline
    Need MAX discrimination

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    You believed there hype the first time and it cost u 4k and now wonder if this new unit can detect 45 feet ...look where the hype coming from u turkey

  14. #14

    Nov 2017
    14
    5 times
    All Types Of Treasure Hunting
    I have makro deep hunter metal detector. So I want to say that I search gaspipe line 1feet wide at the depth of 8 feet under ground with 9th sensitivity with 100T coil. I know that this machine is capable to go 10 feet deep not 45 feet. 2 problem have this unit this is heavy and ground balance is mazor problem. Not work in mineral ground if any one want more questions please ask....
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  15. #15

    Feb 2019
    41
    26 times
    Cache Hunting
    Quote Originally Posted by amar View Post
    I have makro deep hunter metal detector. So I want to say that I search gaspipe line 1feet wide at the depth of 8 feet under ground with 9th sensitivity with 100T coil. I know that this machine is capable to go 10 feet deep not 45 feet. 2 problem have this unit this is heavy and ground balance is mazor problem. Not work in mineral ground if any one want more questions please ask....
    It sounds like they didn't fix the ground balance with this unit, which is basically an upgraded Jeohunter 3D. The Jeohunter 3D was absolutely worthless where I am. Forget about it in mineralized soil. Just scratch it off your list completely. Its a waste of money. Luckily for me Amazon is really good about refunds so I got all my $4000 back. Otherwise it would have been a very painful lesson.
    XLV likes this.

 

 
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