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Found 121 results

  1. 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.
  2. More speculation. http://golddetecting.forumotion.net/t26580-new-gpz7000-aussie-made-coil-rumour
  3. 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
  4. 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?
  5. 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/
  6. 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?
  7. 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
  8. 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
  9. 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.
  10. Another coil question. Given that a mono coils sends a signal that is cone shaped into the ground what would the field of detection be on say a 12 in mono at say 10 inches vs a DD coil that has a blade shaped signal. Say this is in mild ground. Just how much depth is actually lost using a DD coil in the same soil conditions. Would a broader signal at that same 10 inches of depth have an advantage with coverage at that depth?
  11. I have had a Garrett ACE 250 for several years and just bought a very slightly used Garrett AT Pro a week ago. A couple of times I did not get any sound when first turned on but after wiggling the coil cable it started giving tones again. On occasion it has suddenly started chattering with almost no movement and I have done a reset and it corrected the problem. My main issue right now is that if I bump the coil cable close to the connector I get a tone every time. I have removed and re-inserted the connector twice making sure it is fully inserted but still get the tones. I have made sure its not the connector itself. I don't have another coil for the AT Pro to swap out. I texted the previous owner to find out when he purchased it hoping it was less than the 24 month warranty that Garrett has. Wondering how strict Garrett is on fixing issues like this or replacing a coil with a bad cable if I was not the original purchaser. Any suggestions are appreciated.
  12. 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.
  13. 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....
  14. I just got my 6” coil, and a dedicated lower rod is on the way. To make on-site coil changes fast and easy I came up with the following system. Each lower rod and coil have the cord fastened near the bottom with just enough slack to flip the coil flat for my carry bag. Then I made the straps shown with adhesive backed Velcro from the $ store. The soft part goes around the middle rod by it’s adhesive backing. But then it extends 2” and the hard part of the Velcro goes on the sticky side of it so one side is hook Velcro and the other side is loop Velcro and then it is trimmed narrower with scissors. I have one of these on either side of the folding mechanism I installed on my box shaft. What saves time in the field is that these straps stay on during coil change and securely fasten the coil wire. Also, in my case with the folding shaft I used zip ties to make a loop in each coils cord to go where the folding mechanism is where the cord never interferes with the folding or unfolding of the shaft. I will keep the other coil in my detector bag so I can change the coil during a detecting outing it the situation warrants it. No big deal but easy enough that others may consider doing this method of strapping. A
  15. Dilek has mentioned this on some of the forums that a new coil offering for Impact much like what is given on Anfibio package. Looks like the coil is indeed loaded to Nokta’s site now. https://www.noktadetectors.com/accessoire/impact-waterproof-dd-search-coil-28x28-cm-11-im28r/
  16. There are a couple lots on Ebay where the seller includes a Tesoro Widescan (DD) 5 3/4 inch coil with plug modified/replaced to operate on a Fisher Gold Bug (the new generation Gold Bug, not the 1990's versions). I'm wondering if anyone here has heard about the possibility of going the other direction -- putting a Fisher Gold Bug / F19 / Tek G2,G2+, Tek Greek series coil on a Tesoro?
  17. Good morning, just looking for some feedback on the CoilTek 18X12 Goldstalker Mono Elliptical coil. Anyone had any experience with it? If so, what are your opinions on its abilities please. On a different note, how about the Minelab Commander 15X12 semi-ellipitical mono? I realize there are newer, probably much better coils for the GPX, but I'd really like some information on either of these coils by anyone that's used them. Any feedback on either coil is much appreciated, including which one you think might be better than the other . . . (I've never used either one, but have a chance to buy, but can't find any reviews so far except by the manufacturers.) Thanks for your time, and all the best, Lanny
  18. Hi all, I am looking to buy an additional coil for my MK 14kHz to get some extra depth while in the field. I cannot decide between AF35 and KR40. Could you please advise which coil shall I purchase to add some depth for coin, jewellery and relic hunting and why? I would really appreciate your answer! Thank you in advance!
  19. Hi guys I was wondering if anyone out there could tell me what ones best of these two coils I've herd alot of good things about the 12 round nugget finger coil but like the eleptical coils as can get them in places the round won't go and I know the 12x8 is fairly new .but thought I'd ask if anyone has any experiance with it compared to the 12 round ..on depth and sensitivity?
  20. As introduced on the White's pulse induction detectors beginning in 2008. https://patents.google.com/patent/US7994789 Abstract A new dual field search coil for pulse induction metal detectors has multiple coplanar wire coils of different diameters connected in series with the output of a pulse source, overcoming the loss of target size resolution associated with a single coil search loop. Small objects are sensed by an internal small coil and larger objects are sensed by the larger outside coil, and the overall depth of target sensing remains similar to that of a single coil construction. The smaller coil is isolated from the pulse source by the inductance of the larger coil and will ring at a frequency determined by its own parameters. To prevent the smaller coil from ringing, a second damping resistor is connected across the terminals of the smaller coil at the junction of the large and small coils making up the modified search loop. White's Dual Field Search Coil
  21. Has there been any talk of an eight or nine inch coil for the nox in the future?
  22. G'day, I have been a very lucky guy to have been using the new Equinox 15x12" coil . I decided not to tease anyone with threads about it until it was out there and becoming available to the public. As they are starting to trickle through now I will now say what a awesome coil this coil this thing is. Light for size, very sensitive for a big coil, good pinpointing and really great depth ( depth at the beach amazes me and gives me a workout to dig targets ), Its Spring here and I am just getting back into the water with the warmer temperatures so hopefully some gold jewellery will fall in my scoop . Even though Winter at the beach here is a bit slow, I have done some wet sand + some shallow saltwater hunting when some very low tides occurred. This 15" coil is stable (as good as the 11") in the saltwater and IMHO it is not difficult to swing underwater in light - medium wave action. Most of my hunting has been for modern coins in parklands and a few beach hunts. I have found stacks of $1 and $2 coins and almost least one ring every time that I have had it out...most have been silver - one gold ring to date. The 11" coil has not been back on my Eq800 since I have had the 15" , the bigger coverage it provides suits my style of hunting very well. So if you are thinking of a good Christmas present for yourself this is one that I highly recommend and is one that will probably pay for itself in no time. cheers from Downunder and happy hunting 😀
  23. Hello all..... some of you guys have been asking for 9'' and 13'' coils for the Kruzer...it is done.... we have developed these and will start shipping them at the same time with the Anfibio series. Both coils are compatible with the Anfibio and Kruzers. Thank you! Search coils for the Makro Kruzer and Nokta Anfibio metal detectors (excluding Gold Kruzer)
  24. We recieved the 15's from Crawfords in the UK . Who kindly sent mine with Randy's together for Saturday delivery .Thank you the Crawfords crew you made this hunt possible . Kev my son with his sooty and sweep went out with Randy Dee on a permission that has been well detected in the last few years . And producing Roman coins and artifacts . Randy and my self where armed with the new 15 inch coil . I was in field1, AM ,5T,BIAS 4,RECOVERY 2 . I usually set at 20 but due to the nature of the field iron infested . I settled with 17 with the 15 . It worked great . As we progressed I meet up with Randy mid morning (fund out ) Bloody hell the whyly fox had 8 romans .His comment was THIS A CRACKING COIL. Coming from Randy that a great complement as he has 40 ++ years detecting and has had the machines . I had 2 ???? I was detecting back to the car for lunch . BANG 31 hhhuuumm . Dug over the full length of my JR Stainless spade . Tried it still in the hole reading 29/30 .By this time Randy and Kev had appeared . Randy gave it a swing hhhuumm summet there DEEP . So I dug 4/5 inch out with my digging tool place it on the side looked .Could see a silver glinting in the muck . I pick it up gave it to Randy .he said its a bloody Denarius and an early won .'Turned out to be a Vespiasian . 69/79 AD . My first Roman Silver and a cracker . I ended up with 8 roman bronzes and the Denarius . nice roman brooch . Randy really cut it up 22 romans and other bita and pieces .Kev had 8 and a very nice snake item (*brooch) ??? Se if I can put some pics on . Well done Minelab on producing a fantastic coil WHICH will stay on the Noxie .
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