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Well I'm mostly healed from knee surgeries and decided it was time to get back at it. Despite all the smoke in the air in siskiyou county from the gap fire, it was not too bad outside. I headed out to an area that is one of many areas that ill be detecting this winter. it is not a well documented gold area, but it has good coarse gold. Most of the diggings in the area are shallow, but there is some good deep ground for pi detector work. For today I brought along my trusty friend Makro Gold Racer with the new 5x7 eliptical coil. I ran it about the same as other coils. in all metal and some isat adjustment. The place is plagued with alot of small iron and the little coil did a great job of sniping good signals out of the junk. it is extremely sensitive to micro sized targets and fits nicely under the bushes and between the rocks. it has a really nice sensitive tip for pinpointing. . all in all the 5x7 eliptical performed very well and would be a great accessory to hunt especially in the iron areas. well I ended up finding 16 pcs and 2.5 dwt for the little coils debut. I cant wait to try it out some more.Good luck

I was a bit surprised a while back when White's started directly selling the DeTech 13" Ultimate as an official White's branded coil. https://www.whiteselectronics.com/product/detech-13-ultimate-dd-search-coil/ "Very odd" thought I, but I figured it was some kind of one off experiment. The DeTech coil is compatible with the MXT, M6, MX5, V3i, etc. Now it appears White's has turned to DeTech to produce their promised smaller coil for the MX Sport, a 7" round DD coil. From https://www.whiteselectronics.com/product/7-detech-mx-sport-coil/ "Tested and vetted by White’s Electronics engineers and field team, we are offering a limited supply first-run of only 10 coils. Limit one per order." I have used the DeTech 13" Ultimate myself for other brands, plus other DeTech coils and they have done well for me. I guess I am just surprised to see White's turning to a Bulgarian manufacturer to produce coils they once would have made in house. In this case it probably allows White's to get a small accessory coil to market quicker than might have been the case otherwise. People have been wanting something like the small 6" round Eclipse concentric for the MX Sport, but the problem with that coil is it is a thick foam filled coil not very amenable to underwater use.

The GPZ 19 coil release date is now anticipated to be November 2016. The exact day will be announced by mid October 2016, so check back at www.minelab.com for the latest information. The GPZ 19 Super-D coil has been designed to maximise the performance of your GPZ 7000 and give a significant depth increase over the standard GPZ 14 coil. Uncover more gold - and faster! Main Features: Deeper detection (average 30%*) More ground coverage Less ground noise Waterproof (to 1m/3ft^) Super-D coil technology *When compared to the average performance of the GPZ 7000 detector with the GPZ 14 coil in typical environments.Actual performance depends upon prevailing conditions. ^GPZ 7000 detector is weatherproof only.

I doubt I'm the first to wonder about this or even to start a thread here on the subject. But there is a lot of fuzziness regarding this issue and I'm considering purchasing yet another coil so I'd like to get some expert opinions (yes, that means you, detectorprospector reader :). You can break searchcoil size into any categories you see fit, so I'll start with mine. First off, coils don't need to be circular or axially symmetric and many are far from it. But to simplify let's use the larger of the two axes as the nominal size. I divide into three categories: small = {coils whose larger dimension is less than 7 inches ~ 180 mm}, medium = {coils with larger dimension between 7 inches and 12 inches ~ 300 mm}, and large which are all coils with larger dimension greater than 12 inches. Selfishly I'm going to ignore the first two categories since I have several of these for my two detectors. My question comes down to: "Should I get a big coil?" Certainly you'd like to know my detecting requirements so here they are. In order of priorities: 1) nugget hunting (high), 2) coin hunting (moderately high), 3) ghost towning &/or typical historic site relic hunting (moderate). I leave off many areas that interest other detectorists relish: {beach combing, underwater recovery, battlefield relic hunting, cache hunting, etc.}. Looking online, both at text reviews and reports plus YouTube videos, there seems to be support/evidence/hype? that large coils go deeper to find coins (in particular) at hunted out sites. Being someone who successfully coin hunted 45 years ago with what today wouldn't even qualify as a child's detector (Heathkit T/R with no ground balance and no discrimination) I can add my name to the list who understand that finding old (pre-clad, pre-Lincoln Memorial) is an uncommon experience today. But back to the issue, here are the pluses and minuses I see with large coils. Disadvantages: 1) heavy (although maybe not so ridiculous if you lug around one of the many PI heavyweights), 2) noisy, in terms of more mineralized ground within the coil's zone of influence, potentially picking up more trash signals, and higher sensitivity to RF background interference, 3) loss of sensitivity to small/tiny targets, particularly small gold nuggets but also small jewelry, 4) cost. Contrast that to the advantages: a) bigger sweep swath, b) deeper detection sensitivity. I know it's still difficult to quantify since there are so many variables to weigh. But what is your experience? Do you use the large coils you've bought or have you reverted to the medium and small coils, leaving the large ones in your museum displays?

When dealing with people you may have to use psychology to hunt on their property. What you may not be thinking about is that coil you have on your detector has a attitude. The person your confronting is looking at that big coil and they know nothing about detectors are detecting..That person you see don't even see you.All they can see and thinking about is that big coil and at the same time thinking is everything is going to be big too. You and I know better but all they see is big hole and deep hole. Now this is where the Social Psychology of a small coil comes into play. That property owner first look is at that small coil thinking he's not going to harm to my yard with that little thing. It don't come to him that the one behind that detector could do more harm than detector ever could. Let some time go by and as you get to know the property owner better then bring out the big coil. Be sure to always explain the hole you dig won't be over a half dollar in size if can. Leave that yard with a look like you haven't been there. Don't get me wrong I like a big coil and on open ground say beach hunting I wouldn't leave home without it. The thing is a small coil looks friendly without that attitude you don't need. Swing low and slow! Chuck

In order to make finds some of the things I have done have gone against all the things that we know what not to do and although I know they are wrong where people would find rare coins etc once every 2 or 3 years on one such site I started pulling 6 or 7 per week, But I know I am wrong in the terms of correct deployment of such things, But I have the finds and I am still not sure what to think of that, I have seen every thing from BBS, FBS to XP machines being deployed with small coils to sift through the junk and still they find nothing in such heavily junk filled sites, So I thought about it and decided to do the total opposite to what every one else is doing and knows to be correct, So I fitted the biggest coil I had 12" concentric in my case and set the Disc on "3" which is a bit too high and the finds came thick and fast, Seeing deeper gave me the edge and at the time I thought it was laughable and amusing, But the more I did it the more it made sense, People see me there and the look on their face is priceless, A 12 inch concentric in a junk filled site this must look like that this is my first time detecting, I know the limits of the machine so now I have to be inventive, because the biggest coil I have seen there is a 10DD on an FBS/BBS machines, well because of the recovery speed, that gave me one edge and over machines like the XP the bigger concentric gave me another edge, I know it is a crazy thing to do but it works and so far I have never found less than 3 Ancient coins and many from the 1800s plus Gold jewellery and junk jewellery etc and not once have I ever gone home empty handed, So until I have gone over all my sites then they will not be hunted out but the added bonus is they get ploughed every year and so the cycle begins again, I figure this is place is good for at leased another 4 or 5 years and then there is still my old patches to detect, In the Prospecting world doing this might only work for a year or two, But it will work because desperate times calls for desperate measures and this type of madness seems to fill in the gaps while we are waiting for the next Innovation to come along, If some of you are lacking the drive about detecting some area's I would urge folks to try it because you only have every thing to gain. Good luck, john

Has anyone here used nel coils ?and how did you find there performance compared to stock standard coils?

I would like some opinions on what my next coil selection should be for my GPX 5000. I have my Vlf unit (Eureka Gold) with 3 coils to cover the smaller gold. Presently for the 5000 I have a 8" commander mono, 11" commander DD, 11" commander mono and a 16" Nuggetfinder Mono Advantage and I would like at least one more coil. I'm thinking to maybe get an even larger mono. Maybe the 22" Coiltek Goldstalker mono, Or the New Coiltek 18" round Mono Elite. But the Coiltek 24X14 goldstalker sounds interesting. Then of course there is the Nugget finder 25" mono Advantage but it's much more expensive than any of the others. On the smaller side there is the 14X9 Blitz said to be developed for the 5000. So what would you all think I should buy?

Hello, I received the new gold racer 7.5 x 4" elliptical waterproof DD coil this evening for testing. I wont have a chance to get out on some gold with it till this weekend, but I made a little demonstration video at home. looks like it is going to be a real winner for tiny gold and for hard to reach places that other coils cant reach. Good luck

Dear Valued Customers:Please note that we are adding a new, optional elliptical coil to the Gold Racer based on customer demand.This smaller coil is excellent on exposed bedrock or hunting around rocky areas or tight spaces. GR19 Waterproof DD Search Coil19cm x10cm (7.5''x4'')MSRP: $119

I have an addiction. I am a coil junky. I have 13 coils for my GPX 4500 alone! I feel kind of stupid putting that in print for everyone to read but each purchase seemed to make sense at the time or I at least thought I could some how justify it because of increased gold production due to that specific coil. Since I purchased a Makro Gold Racer Pro Pack I am now casting about for reasons to sate my addiction with a couple new accessory coils for the GR. Specifically the 5.5x10" concentric and the 13x15" DD. I have my ideas how each of these coils will be beneficial to me but I would like to hear what you guys think these coils offer in the way of advantages. Lets hear all the reasons you can think of for any detecting genre be it prospecting,relic,coin,jewelry,beach etc.,etc.... Thanks, Merton

I'm want to buy some NEL coils and am looking for recommendations for online retailers. Thanks.......Rob

Hello I made it back out again today but with a different strategy. Use a gpx 5000 armed with 2 new high tech coils from Coiltek instead of a vlf detector. Actually most of the area has already been grided with the vlf detectors. So it was time to see what the Coiltek coils could find. I already have been running the Coiltek mono elite 14" since last spring with great success. but now I have the 18" mono elite to add some more to the 5000 arsenal I tried the new 18" first today. It was a particularly bad emi day to start. so I ran the 5000 in finegold mode with some minor adjustments. Despite the emi, The 18" did a good job finding deeper targets. Managed to find 3 pieces of yellow with it. It gets amazing depth and once the emi settled down it ran very smooth in sens xtra. For a big coil it handles the mineralization very well. the smallest that I found was .3 gram. which seems to be on target with some results from Oz. It is only 10 grams heavier then the 14" mono elite. But you cant even notice. it is well balanced and is not nose heavy. And this is without a harness and running a gold screamer in the side pouch of box cover. All in all a great coil for sheer depth on smaller and bigger targets. Next was the 14" mono elite to see what it could get in the same grid. it is very good at finding tiny targets deep. I ran it in sens xtra with some tweaking. I managed to pull up 3 more with it. The smallest was .1 gram. the 14" is amazing aswell on how deep that it finds small targets. Both coils together brought in 1.5 dwt for the trip. I have tried other coils on the 5000 from Coiltek blitz coils to nuggetfinder 14" and 16". But it is very easy to see in person that something is going on inside the new Elite series that is making a real difference. Not just smoke and mirrors. It will interesting to revisit some patches from the past that produced muti ounces, to see what the new 18" elite can dig up. I will be heading to them soon. Good luck and Happy easter I did a couple videos that I will post aswell. Only bad thing was I didnt bring my speaker with me. Only had the phones. So you cant really hear the detecting. Just faintly from my headphones.

DETECH has been testing a new 11in Ultra Sensing coil in Australia with some very promising results. http://detechaustralia.blogspot.com.au/2016_02_01_archive.html I will soon have a small order of these coils. If anyone is interested please PM me for a pre introduction special. Thanks, Rege

Gary Schafer of Minelab America announced today at the GPAA Las Vegas Show that a 19" - 20" coil is officially in the works. Great effort and therefore time are going into trying to keep this coil as close to the weight of the stock 14" x 13" coil as is absolutely possible. No projected time frame for release was announced but since they are still hard at work in it the implication was not any time super soon. Sorry, wish I had more than that to offer but at least you know now a big coil will happen before a small coil.

Today I sold a Whites TDI pro to a customer, we set it up and turned it on with the stock coil and did a few air tests. He heard that Minelab coils would work and other PI series coils. I suggested we try some Detech coils with the following results. The new 14in Mono Spiral wound ran quieter and air tested a little deeper on coins than the stock dual field. The little 6in Detech mono was a surprise as it hard and loud on targets for its size. When the weather gets better we are going to try a variety of the Detech coils and see which are worth having for the TDI, outdoors with more realistic buried targets. I`ll post what we find out.

Over 60 grams in the specie. One happy customer, this coil ended his Zed envy. GPZ 5000

This question has been in the back of my mind for a while now. If nugget shooting in mild to moderate ground or even stretches of exposed bedrock in a desert wash, how would the 19kHz GB Pro w/stock 10" DD coil perform compared to the 13 kHz F75 w/ 6.5" or 10" concentric elliptical coils? I was going to PM Steve directly with my question but thought forum participation would be better. Thanks for the input,,,,Rob

I am being sarcastic but it is true. Back in the day when I had these on the shelf new they were hard to sell. Now you see them like this one on eBay going for crazy sums of money used. How is it there is a coil that goes for up to $500 used and not one of the aftermarket coil manufacturers will take a stab at it? Yeah, I get they need to be hand made and tuned but Jim Karbowski managed to do it and they retailed for $219.95 new. Was it black magic? A lost art, now known to none? The BigFoot is a 3" x 18" coil specially wound internally in a figure 8 pattern that eliminates electrical interference and allows the use of the front half of the coil for pinpointing with the DFX, which was designed with the coil in mind. The coils were hand made by Jim Karbowski who called his company Applied Creativity. They were sold exclusively through Jimmy Sierra. Jim Karbowski unfortunately passed away in 2007 and the coils now go for far more used on eBay than they ever did new. http://www.gazettetimes.com/news/local/obituaries/james-karbowski/article_c8505ae6-50ec-5639-8a21-33a96b718ad4.html The coils are labor intensive and despite lots if lobbying I never could get White's to make them. BigFoot Technical Report BigFoot Field Test Diagram (in Russian) More Technical Tidbits/Guesses This report on coils has some interesting notes on figure 8 coils on pages 4 and 5. It mentions that the field reverses from front to rear and this is true if the 14 khz BigFoot is used on the MXT. The DFX is specially designed to compensate for this and so has uniform responses front and rear. There is also a more conventional elongated DD design made by Tesoro called the Cleansweep. The BigFoot has a soft spot in the detection pattern in the middle where the figure 8 crosses over. The Cleansweep DD design is easier to make and eliminates that issue. The problem for me was I really got addicted to the DFX ability to trigger just the front half of the BigFoot for quick pinpointing - it is so good it is better than most dedicated pinpointing devices. No, you can't have mine, not even for the absurd price of $500! Oh yeah, beware. There are at least three BigFoot versions for different frequency White's machines. The most sought after are the DFX/MXT versions but there are others, and they do not go for as much. Here is a real beat up one for the old Eagle II I have been lobbying Makro (gave up on White's years ago) but they have not bit - yet. Sure would be a great reason to buy a Racer, having a coil like that for it! Here is my BigFoot and a friends in the U.K. on our MXTs. And here is the same one on my old original White's Vision when they first came out.

I'm wanting to get a Gold Bug, with the 10" elliptical coil though. If I get one with the stock 5" coil how hard would it be to sell the coil and what do they go for?

The Fisher 5x10 DD coil hasn’t been my most favorite coil because, in my mind, it always seemed to be lacking something. I have suddenly found myself owning several different higher frequency detectors, each equipped with a 5x10 or 6x10 DD coil. As a result I have decided to spend some time bench marking this particular coil size. Is the Fisher 5x10 DD coil really lacking something or is its performance in line with other brands similar size and type coils. Since my 5x10 DD coil came with my Fisher F19, I have elected to stay with higher frequency detectors for my bench marking. Nothing lower than 15 kHz. This allowed me to use comparable detectors and coils; the F19 with 5x10 DD, the Lobo SuperTraq with 5x10 DD, the DFX with 6x10 Eclipse. The targets consist of a modern nickel, a clad dime, a very thin (the band is perhaps 5/32” wide by maybe a 1/16" thick), 18K white gold ring that a penny will fit perfectly inside, and two halves of a fired .177 lead pellet. I cut the pellet in two, separating it into the solid head, and the hollow tail. All detectors were tested in Disc mode: The F19 operates at 19 kHz and fitted with the stock 5x10 DD coil. The settings were Disc at 40, no notch, Volume at default, Sensitivity maxed out at 100. At this setting there is an ongoing threshold like response at fringe depth that can be heard in air tests for a couple of more inches than what I recorded. I do not consider this to be a true audio response and I ignored this response. The responses I used to measure with were what I considered a real audio response. In other words, it approximated a beep type response rather than a threshold like response. The Lobo Supertraq operates somewhere above 18 kHz and fitted with the stock 5x10 coil. There are apparently two versions out with slightly different operating frequencies above 18 kHz. I do not know which one mine is but I am assuming it is 18.75 kHz. Settings were Disc at 2 to reject iron, Normal Soil setting, and Sensitivity at 10. I did not go into the Max Boost Range. Threshold settings play no role in Disc mode. The Lobo ST has a great audio response at fringe depth. As you review the results, keep in mind that the Lobo ST still had the availability of the Max Boost sensitivity settings available for use. Note that the dime response is a little bogus as I have the preset ground balance in Disc mode set negative but it still shows coil performance similarities. The DFX was tested in the 15 kHz single frequency Prospecting mode with the 6x10 Eclipse with Silent Search turned on to remove the threshold response. Pre-Amp Gain at 3, AC Sensitivity at 64, tone Id turned on and iron discriminated out. As with the Lobo, there is additional sensitivity available for use. The AC settings were rather tame but I wanted a rock solid response. The results of the bench marking told me that the 5x10 DD coils tested share the same basic performance and that my Fisher 5x10 DD is operating as it should be. This has increased my trust and understanding of the coil. Or should I say I feel more comfortable using the coil now. I'll add the GoldStrike 5x10 DD coil results to the mix tomorrow. HH Mike

Last topic of the day for me. Does anyone know of this having been done?

Can someone tell me who makes the Jimmy coils for JS? Thanx

There doesn't seem to be much discussion about all these new coil models being released right on the tails of the GPZ release - Elite, Evolution, Detech... I know a lot of people here are using GPZ's and sold their GPX's, but really no one is saying much in the US on any of the forums at all. And the Elite has been out for enough time now that some people must have quite a bit of experience with them, yet all we hear is "they are great", nothing quantitative though. So I'm just going to pose some questions here that are driving me a bit crazy: What exactly is it that makes these coils so much better? And are they really so much better? The very few testing results I've seen have been almost entirely qualitative and that doesn't say very much. I mean...the GPX still works the same and thus the coil is still just a coil. How much better can it actually get after how ever many generations of previous coils we've already seen? Why were they coincidentally released right after the GPZ? If it was just 1 company I could buy into a simple coincidence...3 companies now...Are they all using different technology to make suddenly superior coils? How is that even possible given the simple makeup of a coil? If every manufacturer out there already knew how to make much better coils then why didn't we see them before the GPZ came out? What purpose would it serve for all of them to just hold back producing these together when they are in direct competition? Conversely, if they only discovered how to make much better coils after the GPZ came out then that means it only took them a short time to figure out how to make these, so why didn't at least one of them figure it out in the years leading up to the GPZ release if it was such a quick fix? I'm not saying they aren't better and great. I'm just saying we're being sold things that are saying they are better and great with no real evidence, no real explanation about why they are even different. We know they are heavier and slightly odd sizes...what else? I mean, I don't know a lot about coils but it's not like you can just add a ton of extra windings in and expect greater results - the machine itself is tuned to use coils with specific inductive properties right? Is anyone brave enough to tear one apart and see whats inside? I'm going to be buying a NF Evolution because the only way I'll get real testing results done is to do it myself but I don't have money for the other 2. If anyone else has a Coiltek Elite and someone else gets the Detech then I'd like to meet up so we can test all 3 against a normal NF/Coiltek/Detech coil on the same machine. Then also against the GPZ just for general interest purposes. I'll be posting it to my youtube channel if I can make this happen so everyone can see if I'm able to get these rounded up into one place. I'll be in Arizona this winter, let me know if anyone is interested.