Search the Community

While running my hands along a coil cable, I noticed a pin-sized thorn had pierced the cable, broken off, and embedded itself inside. Tweezers were of no use as the splinter was too deep and brittle. It got me a wondering if any one has any experience regarding the potential impact of such an injury to the coil cable and it’s insulation. Any thoughts?

Please see the poll and give me your opinion. Thank you, Doc

Maybe I haven't been paying attention, but with the recent push towards digital multifrequency flagship detectors, why have concentric coils been shunned? I don't think it's an engineering/physics issue although I can't rule that out. The White's Vision/V3/V3i/VX3 had concentric coil options and it was digital multifrequency. Did any of the Minelab BBS, FBS, FBS2 models have compatible concentric coils, either in-house or 3rd party aftermarket?

That 17” Minelab mono is pretty sweet. Just used mine for the first time today and it honked on little tiny pieces of lead 2”-4” deep. I was in pebble to cobble sized rocky terrain interspersed with small boulders and only a few plants (desert mountains). I was going pretty fast, trying to beat the sunset at my last spot for the day and was surprised how small the lead was I kept picking up. It’s a great coil for doing quick surveys over large areas and really doesn’t weigh a lot. I have a Coiltek 14 inch mono , but it just seems kind of heavy and bulky compared to the 17. I haven’t done sensitivity comparisons with them yet. Both are relatively new for me. The stock 17 is a great coil if you need to cover a lot of ground, else the smaller Coils like the CT 10x5 would obviously be best for vacuuming between the rocks and underneath bushes.

I'd like to focus on searching for 1-3 oz (2-4 square inches) or larger size targets that are deeper, perhaps more than one foot down. The ground I'm searching is moderately mineralized and easily handled by the 11x7" mono. I currently have the 13x11" DD and the 11x7" mono. Would the 16x14" mono be a significant improvement in depth for larger targets? I understand the differences between the DD and mono coils, but I don't fully understand their differences in detection depth, especially on larger targets. Thanks for any help or comments. Az_Ed

I have 2 coils for my Equinox 800, the normal 11 inch and the 15 x 11 coil…. I have the aftermarket coil supports and would ask if there is a 2 part epoxy glue that could be applied to fasten these coil supports to the coil WITHOUT causing any interference with the coil’s performance ?…. Or maybe use CRAZY GLUE ? … thanks for helping…Al

I currently have a White's 6000 Di/Professional detector which came with the standard and larger search coil. If this won't work what do you think I could get for it? Thanks9

Back when I started using the AT PRO back in 2009 Garrett recommended doing a factory reset when you changed to a different coil on the ATP my question on the Garrett 24K is this also the recommendation when changing to a different coil, or is performing a factory reset UN necessary on the 24K when changing to one of the different coils still learning the 24K and liking it a lot

With the release of the Xterra pro showing that all these coils are only limited to a chip and not the coil itself, it should be possible to hack the chip or override the chip with another. When I was younger this was easily done in gaming systems to make copied DVDs work to play copied games. Anyone know if this might be getting “worked” on for the coils? Small market though, maybe not worth the time of an ambitious electrical engineer unless they were an avid detectorist. @phrunt I’m winking at you ?? You seem to have the “know how” or the “contacts”, plus all the coils?

Yesterday I went to my beach and left the 6" Equinox coil on for an extended hunt. I had used it a couple of days before on a high iron beach so that I could hear targets clearly. Yesterday's hunt turned out to be an experimentation of sorts. What could I really find on a 'tough' beach with the little coil. I've found gold jewelry on the beach with it before. When I first got the coil I wasn't able to go nugget hunting so I went to a beach. Right out of the box as they say I found 4 little gold rings many years ago. I pretty much put the little coil away over the years in favor of the 15" coil and occasionally the 11" coil. Coverage is the operating logic to that. I feel 'naked' without the big coil. Yesterday I was willing to experiment. After selecting the frequency and then ground balancing I was able to go to 25 on the sensitivity/gain. This let me hear my threshold and without chatter so it was a matter of swing speed. There weren't a whole lot of targets so each time I'd find one I would try to find a patch. I managed to find a couple of them as you can see and some interesting targets in the 1.5 hour hunt. The rack on the left is one of the largest objects I've found on this beach. It was down about 8" and it weighs about 5 lbs. Some of the quarters were down about the same depth. The knife blades were iffys I think because they are mostly stainless steel. The silver Thailand earrings were in the wave wash and are very light at 3.2 g and were found together as displayed. After a bit of learning the capabilities of the little coil again I then wondered what is best. Do you take a small coil and use it at maximum sensitivity or do you take a larger coil and turn down the gain? This would go for other types of detecting as well. This is certainly a reason to have multiple coils.

Very cool.

For those of you thinking about buying yourself a bigger coil for your Equinox, here's how big they are compared to a size 10 foot (see table below).. I find that measurements on paper (like 15x12'' or 15'' round) are hard to picture in my head without something to compare them to.. Hope this helps.. ?

I have a question regarding Whites DF coils on the TDI Pro or 'sl' and other variations,i am aware the difference between say a DD and Mono coils etc,but how would the experts describe the DF coils as in the stock and 7.5'' DF coils are these classes as 2 Mono coils within one another or have i got this completely wrong. As far as i can tell both the inner and outer coils within the coil case operate complete independent from one another,anyone have knowledge on how one would describe these DF coils,of course i could be totally wrong and would like some help from the electronic whizzkids ? Many thanks

The chart shows current GPX-6000 coil sizes, weights, and areas. I hope this chart can help you find out which coil to bye in the future. Phrunt- the 6 X 8.5 specifics have been added to the chart.

While reviewing some more of my archived files I found the coil winding specifications for one of White's Electronics BFO metal detector coils. Data was provided by the White's Factory. This coil was called the "Triplet Coil". It was manufactured in the late 1960's and early 1970's. My information is from May 1969. During this period there were several BFO coil sizes offered: a 3-inch coil for nuggets, a 6-inch coil for coins and a 12-inch coil for large objects. The Triplet was designed to combine both the standard 6-inch coil and the 3-inch nugget coil with an additional 2-inch coil for added sensitivity for small objects. Single coils were wound using a wood based enclosure. The Triplet Coil was encased in a molded plastic housing. For those of you who have a vintage White's BFO metal detector and would like a combination coil or those of you who wish to build a replica of a vintage White's BFO metal detector I have attached a PDF of the winding details for your viewing pleasure. BFO Triplet Coil winding instructions.pdf

trying to decide , 11inch coil x35 or the 11x13 x35 anyone have experience with both

I'm looking for opinions on the Minelab 6 inch vs the Coiltek 10x5 for my Nox 600. I search a lot of trashy and brushy sites. Anybody have any experience with both coils? Any opinions? Thanks.

Hello Guys! How Do Different Coils Affect The Performance Of A Metal Detector?

Merhaba arkadaşlar sizce 18 elite mono veya 18 inch commender monomu başarılı

Curious if the Infinium coils are compatible with the Seahunter. I hunt some crappy ground where a pi would be usefull and the mono coils get slaughtered with emi. My thoughts the 5x10 would do well not only for emi but because it is a closed coil it will be easier to work the gravel and rocky beds.

So most detector companies make different coils for their machines. So why don't they optimize programs for specific coil sizes? For instance with the Equinox would using Park1 with the 11" work just as good if you changed to the 6" changing nothing. You could go into Coil Size in settings and designate what coil your using and once done the detector would change each factory program to be optimized for the size coil you picked. I know optimized for one site might not be optimized for another, but factory settings have to be set where they are for a reason. It just seems that changing coils should require Sensitivity, Recovery, and maybe even frequency tweaks etc. to get the most out of a smaller or larger coil. It seems like a selling point to me.

GPX 6000 coil makers information Nugget Finder Xceed 6000 series Nugget Finder has now announced there will be 3 Minelab approved coils in the Xceed 6000 range at this stage. It looks like there will be Mono coils in 8x6", 12x7" and 16x10" sizes, which represent some great options for bushy or tight spots! If you would like to be kept in the loop regarding pricing and release date, visit our website here and click on the size or sizes you are interested in and hit the 'Notify me' button to receive news as it comes in! Coiltek Goldhawk Gpx6000 Series Coils Will be available in 3 sizes - 10x5", 9" and 14x9" Mono configuration Precision pinpointing and great manoeuvrability Fully approved by Minelab Visit our website here and click on the size or sizes you are interested in and hit the 'Notify Me' button to receive info on pricing and release date as it comes to hand. Once we have firm intel from Coiltek we will begin taking pre-orders!

I looked for this topic before posting so I wouldn’t duplicate something that’s already been discussed. Nothing came up. I remember back in the day, you used to have to send the coil in with the detector when having it repaired so they could also tune it (the coil) to the machine. This was on those with Auto GB. According to Vince Gifford at Tesoro, Manual GB didn’t care because you could manually “tune” it. I was also told that as a result, accessory and aftermarket coils won’t work as well as the original coil that came with it for that reason. Is this still true? Thanks! Walt

Searched around but still can't decide. Leaning coiltek for now. I mostly hunt for coins and small token type targets. Older parks that are slightly over grown and fresh water beaches and streams plus i can hunt some public ground that's huge. It's an old lead mine area that was active from 1830-1930 or so. Wooded/hilly with sink holes everywhere and has to have building sites that are long gone. From what I've read the coiltek is close but not as deep as the 6" M/L coil. But in water i would sure like the added coverage. Another thing i read here is the coiltek middle is not as receptive as the heel and toe. How would that effect swing pattern? Thanks.

Seems like all the recent interest in coils has got Minelab interested in looking at being clever with some coil designs themselves. Nice to see Minelab acknowledge in writing the power of spiral windings too, something some of us have been saying for years is real, now there is no debate. Seems Bruce Candy himself agrees with what some of us have been saying over and over - they work just fine in mild and medium soil too. We already saw the horizontal/vertical spiral winding idea in an unpublished patent, but it's published now. This is for hotter ground. Idea being you get the advantage of a spiral (increased sensitivity) without the disadavantages (spurious signals in highly saturable soils) by turning the front/back ends of the coil vertical to decrease the flux density going into the soil in parts of the coil that aren't required for side to side motion. This one (US 20220221610 A1): There are a number of other winding configurations in the patent as well. I just noticed an International patent that hasn't been filed in the US yet too (WO2022126185A1) with some pretty crazy coil designs. From what I gather these are actually concentric coils. They seem to have up to 2 to 5 "groups" of RX and/or TX windings to null out what I guess is spurious saturation signals, conductive ground, and EMI. But then they seem to just concentrate mainly on saturation. But I'm just taking a break from work and eating, figured I'd look up patents while I sit here, so I don't have time to do more than just selective scrolling through this extensive document. I scrolled past some talk of such coils designed with 2 cables to the control box too. Here are some odd concentric "noise cancelling" coil cross sections from this patent: There are some apparant performance graphs too which I guess relate to depth, but they are unlabeled so I'm not sure what they mean until I have time to read through everything. So I'm not going to post them because I have no clue what they represent right now and I gotta head back to work.