Jump to content

Search the Community

Showing results for tags 'coils'.

More search options

  • Search By Tags

    Type tags separated by commas.
  • Search By Author

Content Type


  • Metal Detecting & Gold Prospecting Forums
    • Meet & Greet
    • Detector Prospector Forum
    • Metal Detecting For Coins & Relics
    • Metal Detecting For Jewelry
    • Metal Detecting For Meteorites
    • Gold Panning, Sluicing, Dredging, Drywashing, Etc
    • Rocks, Minerals, Gems & Geology
    • Metal Detector Advice & Comparisons
    • Metal Detecting & Prospecting Classifieds
    • First Texas - Bounty Hunter, Fisher & Teknetics
    • Garrett Metal Detectors
    • Minelab Metal Detectors
    • Nokta / Makro Metal Detectors
    • Tesoro Metal Detectors
    • White's Metal Detectors
    • XP Metal Detectors


  • Best of Forums
  • Gold Prospecting
  • Steve's Guides
  • Steve's Mining Journal
  • Steve's Reviews


  • Free Books
  • Bounty Hunter
  • Fisher Labs
  • Garrett Electronics
  • Keene Engineering
  • Minelab Electronics
  • Miscellaneous
  • Nokta/Makro
  • Teknetics
  • Tesoro Electronics
  • White's Electronics
  • XP Metal Detectors
  • Metal Detector Settings

Find results in...

Find results that contain...

Date Created

  • Start


Last Updated

  • Start


Filter by number of...


  • Start



Website URL










Gear Used:

Found 135 results

  1. I have had my 800 since the end of April. I have to admit I was a little skeptical of all the hype but after using it a lot I the last 3 months or so , I am very impressed. This past Friday I was at a new site and when I picked up the detector to take it out of the truck the coil fell off. Both the mounting tabs were broken. I am pretty particular with my equipment so I really don’t think it was anything I did. I emailed the repair center and has been my experience in the past, they were prompt in their response and had shipping instructions to me that same day. They said the coil would be replaced under warranty but would take a few days because the service center had run out of coils and they were currently on backorder. This leads me to believe their must be a lot of people who have had the same issue. It will be interesting to see if this new batch of coils has beefed up the mounting tabs. They really are kind of flimsy when compared to the Explorer series of coils. I don’t mind the wait, it gives me a chance to get to know my 6 in. coil.
  2. I swapped out my Nel Big coil on my AT Pro and put the stock coil on and just for kicks I did a quick air test to see if there was any difference and I found that the targets now hit 15-20% further away ie dime at 10 inch instead of 8. For those that don't have Garrett machines and a 3rd party coil, the procedure when changing coil Garrett says to do a factory reset of the machine. So if anyone knows, does using a large coil setting on a stock coil essentially do a tx boost? Do other machines require factory reset after changing coils?
  3. Finally got to work on testing the 7 1/2DF, 8x6 Sadie, MJ 8x12, and 12"DF. Did a comparison on the 7 1/2DF and Sadie with both battery packs, and a comparison of the MJ 8x12 FM, and the Whites 12"DF at 16v. EDIT: I notice I cut off the early portion of the Miner John comparison. Hope you get enough of the sensitivity of that coil. It works very well on my SL. Jim
  4. Regardless of the "Machine" your swingin' now! What coil was your favorite? My Favorite is below .Nugget Finder Advantage 3 spoke's the whole range... ."What a Ya Reckon....1:57 "Only Fools Reckon" and at 3:58 "Oooooo! How good is that Coil" "Are you Downgrading your Optimism? 2:33 I hope you Enjoy this "dig" as much as I do! Cheers! Ig
  5. I did a coil test some time ago using a Tdi Pro OZ, quite a variety of coils involved. Just a bit of information not wanting it to go to waste. The test area was located in the middle of the Golden Triangle in Victoria, Australia. Looking at the images the test site is located on a area that produced large nuggets. Heavily mineralized to give the depth tests some authenticity. Targets were varied as were the coils tested. The Tdi Pro was ground balanced, gain was at 5, conductivity was in ALL, pulse delay was 10. Frequency was set in the middle and the audio was boosted by a Nokia MD-11 external speaker. Only clear repeatable signals were recorded. All targets were buried in the ground sideway from a miners hole, so as not disturb the soil on the surface or above the target. Only the 1 grain ingot and one 0.5 gram gold coin were buried from the surface disturbing the ground. Not sure how useful this is for Tdi SL users, deduct 10% maybe.. Just gives a sense of what is realistic is this one location at that one time with the Pro with the variety of coils available back then. All the best, Karelian
  6. I have 2 coils on my Tejon. 8x9 conentric I use in high trash areas and parks (same thing) and a 10x12 i use for woods and fields. I got lazy and left the widescan on and hit a local park and came across bottle cap after bottle cap and could not find a good tone break to cut them out without losing too much range. I saved a couple and tucked them in my back yard 6" down and did a quick test. I set my 2nd discrim for break on the widescan and the primary for the concentric and there is a huge jump between them. Both discrim match up on other items such as coins and rings, pull tabs. Note that both coils actually ground balance the same and the widescan can pick up the tiniest pieces of lead and foil. I have found lead pellets from a pellet gun 4-6" down with it. I can also place a cast iron hammer head half over a dime and still hear just the dime though broken signal It's there. So I am really stumped on the bottle caps. Maybe someone here knows why.
  7. I know everyone probably gets sick of coil questions, but i have another. So the area i have been detecting and finding nuggets in VA was found back in about 2011 by some friends of mine. They hit it hard for a few years till it got to thick to hunt. One of the patches they found at this place was 100s of yards from all other gold finds, and was initially found with a 9X12 nugget finder coil, when they found a 1.5 ounce nugget. The next trip out they used a NF 24X12 coil and found, i think a 3/4 ounce, an ounce piece and hold your breath a 7 ounce lunker at about 30 inches down. But to my surprise that NF24x12 is the biggest coil they used. He has owned a 18inch and 24 inch mono coil as well but never really used them at this site due to EMI issues. Now my understanding is, that a 14 inch round should out punch the NF 24X12 on large targets at depth, and that Detech coils seem to generally less affect by EMI when compared to NF and coiltek coils. However would a 14inch DD coil out punch a 24X12 mono? Please correct me if im wrong. So the question is, is a 14 inch detech mono going to be a better option, or detechs new 15 inch Ultimate DD coil. Which would punch the deepest in fairly hot ground, with a good bit of EMI flying around. Lots of questions as i learn more about the site im detecting. Thanks guys,
  8. COIL SAVERS Hey guys, I just got these in, they are a really simple and worthwhile upgrade The “CoilSaver” washers serve to massively reduce coil ear and coil yoke wear by spacing them from each other to prevent them rubbing together (see photos) These also make your coil tighter on the shaft (no floppy coil) and reduce the chance of snapping your coil ears off as the bolt will not need to be overly tensioned. They come in a pack of eight with two thicknesses so you can mix and match them depending on the wear of your equipment. (Four washers requires per shaft making two full sets Red washer x4 (3mm) Black washer x4 (2mm) These are currently available at www.detect-Ed.com and we do ship international very affordable but our US dealers will surely have them soon 👍
  9. I was wondering why I haven't seen this question anywhere. Does a bigger coil use more power?
  10. I was curious if anyone has any knowledge on this.I have a older model spectrum that came with a 9.5" coil and I found a 6" deep scan coil.What is the depth difference between the two under the same conditions.By the way I am mostly a coin shooter.Thanks in advance for any information.
  11. Clearly, with the huge amount of interest that is being shown in the after market coils for 7000, it`s obvious that there is a market out there for coils other than 14'' and 19". I don`t take the 19" out much because I have had very little success with it and with my bad wrists it`s just too damn heavy, but Minelab did tell us in the early days of marketing the 7000 that they would be releasing a 11" coil down the track, and now there is another company that nobody has ever heard of making a huge range of coils that are lighter and have so far been very well received by the public. What`s going on Minelab?
  12. This is a little premature perhaps since we are still waiting to see any accessory coils at all for the Equinox detectors. First up will be the 6" round DD followed by the 12" x 15" DD coil. What next? I think the Equinox has genuine potential as a gold nugget detector, but that the open spoke coil designs slated so far are not optimal for that purpose. Plus, some relic hunters etc. want something narrower than the stock 11" coil but do not want to give up the ground coverage as much as the 6" round coil does. Minelab has a couple molds for elliptical coils. There is the 5" x 10" DD coil for the X-Terra but that coil is not fully waterproof and too buoyant for water use even if it was. The better option in my opinion is the newer 6" x 10" coil made for the Gold Monster. The Minelab Gold Monster uses the exact same lower rod/yoke size as the Equinox, meaning the coil, coil bolt, and even the coil connector are already the proper size to fit perfectly to the Equinox. Here is my Gold Monster 6" x 10" DD coil mounted to my Equinox 800. As I said, a perfect fit. The Equinox version might weigh more due to more windings required for Multi-IQ but the coil as is weighs less than the 11" coil. My Equinox with this coil mounted weighs 2 lbs 13 oz or 2.81 lbs, slightly less than the 2.96 lbs with 11" coil. It does make for a little better balance. For nugget detecting in particular a solid bottom coil helps prevent snagging on rocks and stubble. I imagine the farm field hunters would love the coil for similar reasons. Anyway, I have no hints that this will happen but I am going to be referring to this thread over and over until it does. With a mold in hand half the work is done, and with the extreme popularity of Equinox no good excuse for this not happening. I personally think it is a requirement for Equinox to be all it can be as a prospecting detector and for many other uses also. Nope, not going to turn it on to see what happens!! Anyone who thinks this is a good idea and wants to aid in the lobbying effort has my express permission to use these photos in posts on other forums, etc. The direct link to the first photo is http://www.detectorprospector.com/forum/uploads/monthly_2018_04/minelab-equinox-with-6-x-10-dd-coil.thumb.jpg.07f2d166da68ca4c6e39bf21759c7c4f.jpg Click photos for larger versions....
  13. I came into possession of a Deltech 8x6 SEF Pro coil for a EDS Winner detector. Would this coil work on a MXT Tracker E-Series detector? I believe the frequency for the EDS Winner is somewhere around 28khz. New to the sport so looking to get educated. Thanks.
  14. I was lucky enough to have a guy on here make contact with me offering his Elliptical for sale to me. Right now my money is on the way and by the end of next week it will be in my hands . I’m excited to give it a try on two lots almost down town that has lots of history. I’ll be posting my finds right here.
  15. A Minelab dealer down Geelong way put up the below post about an Aussie company starting to make GPZ coils. Interesting timing, wonder if the Russian guys have forced Minelabs hand to allow a local 3rd party to make coils. Here is the link to the facebook page https://www.facebook.com/luckystrikegold/ Not looking to start a fight here, just sharing info. I don't care what coils everyone wants to run lol Lucky Strike Gold Brand new GPZ coil coming soon! ? There is a rumour in the wind that an Australian company will soon be making GPZ 7000 coils. At present there are only Russian made after market coils being made, so hold off and bag yourself a genuine Aussie made one. They will be cheaper than the Russian coils and, as always, very well made.
  16. https://www.minelab.com/usa/community/treasure-talk/a-crash-course-in-everything-coils While there is nothing revelatory written here, does anyone else find it interesting to see them posting this topic at this time? With all of the recent aftermarket coil discussions filling these forums for both the SDC and GPZ, it makes one wonder if they are just trying to be relevant or have a plan to change things up. It’s speculation. But, the timing is interesting. It must be uncomfortable seeing another company modify your product for a profit. There’s also probably a good reason they haven’t released alternative coil options to date. Hopefully, nothing of lower quality gets released in haste.
  17. A piece of information I value and often can't find (or can find, but sometimes unreliably) are coil weights. I'm attaching a list I've assembled. These weights include the cable and the coil cover (unless noted). The uncertainty of the measurements is estimated at about 2 grams. Coils that are made with the same name and nominal dimensions, but for different detectors, will likely have some difference in weight due to the number of windings and possibly other discrete components (e.g. resistors) inside. But you can still get an idea of a weight if you find a coil you're interested in but it's listed for a different detector. An example here is the Detech Ultimate which came in at 532 g for the Fisher F75 and 549 g (as measured by Phrunt) for the Fisher Gold Bug. A more extreme case here is the "Digger" coil for the X-Terra series at 481 g and the same housing, cable, etc. of a prototype Gold Bug coil weight of 437 g. Coil_weights2.pdf
  18. Rules say post to relevant information/items of interest. Fits the bill with me. I hope I'm not violating any rules by posting this it's not mine nor do I know the seller but I was browsing Metal detectors for sale and I came across this: https://orangecounty.craigslist.org/spo/d/los-alamitos-whites-metal-detector-xlt/6916021862.html I am posting this because included in it is a bigfoot coil and when I used to run a couple of Whites machines I remember folks raving about the Bigfoot coil and for what I understand the coil alone is quite pricey nowadays. Best Skate
  19. More speculation. http://golddetecting.forumotion.net/t26580-new-gpz7000-aussie-made-coil-rumour
  20. Something I've been wanting to do for a while now..I got another x ray generator couple weeks ago and wanted to try it out on my DR System.. Heres most but not all of the coils I have. 1. CTX 6" 2. TDI Pro 12" double mono 3. CTX 17' 4. XP Deus 9" 5. Miner John 8x12" mono 6. x cal 8" 7. Gold Monster 6" 8. Fisher Gold Bug two 6" 9. Nox 6" 10. Nox 11" 11-14 GPZ 7000 stock coil
  21. I have a Vaquero with the stock 8"x9" concentric coil. I'm wondering if I should get a DD. There are quite a few out there, for example the Tesoro 5"x10" (stock on the Lobo SuperTraq) and similar size (open structure, though) by Mars and also Cors/Nel. I'm only interested in coin hunting with this detector. Anyone out there with experience care to comment whether or not I'll see (hear!) much difference if I get one of the DD's?
  22. Nugget Finder is coming out with some new DD coils for 2019 I look forward to hearing about them once released. COMING IN 2019 - DDXSEARCH A new Range of DD Coils for 2019 Sizes will Include 15" Round, 19" Round & 25" Round Features Include -Spiral Winding - Lightweight - Excellent Signal Response -Quiet Operation in Highly Mineralised Ground - Fantastic Ground Coverage at Maximum Depth https://www.nuggetfinder.com.au/
  23. VLF detectors can come with DD or concentric coils. This is similar to but not quite the same thing as DD versus mono on a pulse induction detector. There are three basic coil types in wide use, Concentric, Double D (DD) and Mono. A VLY detector transmits and receives simultaneously and so there must be both a transmit coil and a receive coil. A pulse induction (PI) detector can alternate between transmit and receive and so one coil can be employed as both transmit and receive in an alternating fashion. There is confusion on this but simply put VLF (induction balance or continuous wave) detectors do not employ mono coils. A VLF can only employ the concentric or DD options. A pulse induction coil can work with all three types. Metal detector coil types illustrated - concentric vs DD vs mono VLF detectors are more alike than different these days. One thing that can make a real difference is what coil the detector comes with. Two very similar models will be quite different if one comes with a 12" round concentric, and another an 11" x 7" DD. In this case the very same detector can be turned into two different detectors by changing coils. Here are a couple rarely seen on the F75 - the 10" x 5" DD and 10" elliptical concentric. A big difference between the Teknetics T2 and Fisher F75 was that the F75 came later and the ability to use concentric coils was added. The T2 can only use DD coils. Why DD or concentric? DD coils are all the rage these days. However, concentrics have more consistent detection patterns with less dead spots up close. Every notice how that DD coil goes wacky on shallow targets? And concentric coils are much better at identifying flat ferrous targets like bottle caps. Here it is from the guy that should know best, Dave Johnson, lead designer on the F75. About Search Coils by Dave Johnson Search Coil Field Shape by Dave Johnson Coil Basics by Carl Moreland I like the 10" DD for the solid design, better for working in stubble or other locations where an open coil might hang up. The concentric just for being better behaved. The DD is the better prospecting coil for bad ground. Concentrics do well on milder ground. A note on coils. The blade like knife edged detecting pattern depicted in DD marketing ads is largely myth. Electromagnetic fields radiate and simple coils cannot focus them into beams. A round concentric coil has a search field shaped like a soccer ball cut in half. A similar size DD coil will have a search field more like a football cut in half lengthwise. If you ever doubt this, just fire up your detector with a DD coil, flip it over, and run a coin under the coil noting where the signal fades at different locations under the coil. Finally, depth is more related to coil width than coil length. Think of a 5" x 10" coil as a stretched out 5" coil, not as a skinny 10" coil. That is why when listing elliptical coil sizes you will often see me putting the small number first. Marketers do it the other way around so you tend to think you are getting more than you are. Fisher F75 with 10" Elliptical DD Coil Fisher F75 with 10" Elliptical Concentric Coil
  24. This is not about detector versus detector. It is just a video questioning if small coils are always better in trash, and whether concentrics are always better than DD coils at handling ferrous targets. Too bad about the wind noise. Good stuff though illustrating there are no magic answers. For detailed information see this article VLF Concentric Vs DD Coils
  25. G’day Guys, Can anyone say if this coil is a mono or DD please? It was supplied by the seller with the QED. Thanks. Al.
  • Create New...