Jump to content

Search the Community

Showing results for tags 'detector tech'.

  • 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 Detector Advice & Comparisons
    • Metal Detecting & Prospecting Classifieds
    • Compass, D-Tex, Tesoro, Etc.
    • First Texas - Bounty Hunter, Fisher & Teknetics
    • Garrett Metal Detectors
    • Minelab Metal Detectors
    • Nokta / Makro Metal Detectors
    • Tarsacci Metal Detectors
    • White's Metal Detectors
    • XP Metal Detectors
    • Metal Detecting For Meteorites
    • Gold Panning, Sluicing, Dredging, Drywashing, Etc
    • Rocks, Minerals, Gems & Geology


  • 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:

  1. Hi, I am looking for a way to get a digitised data feed of a metal detector so I can write my own metal detecting system. Any experience with this? A recording of numbers that I can feed in to a programming tool on my laptop is where I would like to be. I assume developers of commercial systems have tools for such. can I buy or make simple powerful diy detector with some coils, amplifiers and a digitiser? There are some diy guides that mention multimeters. Perhaps I could find a usb connected multimeter or a Bluetooth multimeter that connects to a streaming api on the laptop? would these diy multimeters be comparable to commercial systems? Is what makes commercial systems good their special software sauce or are there hardware differences that can’t be acquired by normal people?
  2. Steve's post on the merging of metal detectors and smart phones inspired this extremely witty response.. I can see why someone could easily mistake their smart phone for a control box.. 😁 I guess for people glued to their phones all day, nothing much will change when a 'control box app' on our phones becomes a reality.. Can't say I'm looking forward to that day..
  3. Welcome, I was wondering if anyone if using any form of artificial intelligence in their gold detectors? I'm an artificial intelligence (AI) programmer. Last night I was watching Aduk gold on Netflix and suddenly wondered if anyone was using AI? A quick google didn't return much. I'm not sure how familiar everyone is with AI, but essentially since around 2015 it's blowing away peoples expectations year upon year. Simply put, traditional computer programs require humans to code in rules that then lead to a result. AI does that backward, it takes the results and creates its own rules to get to that. To do this with gold would require the creation of training data to feed into the AI. I don't know anything about gold detecting but I imagine you'd bury some pieces of gold and go over it with the detector, then save the waveforms (or equivalent) onto a computer. These become the gold samples. Then also bury things that most often give the most false positives compared to gold, and save those waveforms. The exciting thing compared to a few years ago is that not a huge amount of training data is needed. It's possible to take huge AIs trained by Google and then teach them the new gold samples far quicker with a lot higher accuracy. The process of training is basically the AI guessing 'gold vs not gold', and over millions of iterations it starts to learn. It then can be saved and used in the field to give a percentage estimation of how likely it thinks something is gold. I don't know anything about gold detecting but this is how I would see it used practically. Am I right in thinking that a fair amount of time is spent digging up false leads? If it's not and most of the time is spent surveying the area then the AI isn't very useful. But if there is a lot of time digging up false leads, then if the AI could save someone digging up 90% of the false leads would this create a lot of value? I'm really interested in any thoughts that any of you have regarding this. Cheers Ben
  4. I can't but help notice how poor quality metal detectors have become, for such expensive electronic devices the quality is frankly pitiful. I like everybody buy a lot of stuff, from TV's to Vehicles and everything in between and the products I have the most trouble with are metal detectors. Most things I buy last fine, I never really cared about warranty and rarely kept receipts until I started detecting, I'd never needed to use it. Almost everything other than detecting gear I've bought in the last 20 years has lasted well beyond it's warranty period trouble free and most things I've bought in that time I've still got now are working fine or I got rid of them while still in a working state because they were simply replaced with newer stuff. I have a LCD TV that's 15 years old and never had a glitch, it's now just used by my daughter as I couldn't bring myself to throw it out, I had a very large rear projection TV from about 10 years before that and it still works fine but I gave it away and the people are still using it, . I have an original Atari game console from 1983 that I had as a kid that still works, and my original Sega Master System from 1986 still works like it was new yet a lot of the detectors I buy screw up in the first year or two and it's not just me, I see it happening to lots of people. I still have my first ever metal detector from when I was about 8 years of age and the thing still works! I've only been detecting a few years so wasn't overly aware of the history of detectors and their failures but looking around seeing people using old whites metal box machines and people still using Gold Bug 2's from the 90's gave me the impression detectors were built to last. I thought the poor reliability was just a Minelab problem with recent machines like the known build quality issues with the Nox and now the GPX 6000 but if I look back the CTX had it's share of issues too and I would guess other models. The GPX 6000 is dismal, worst quality detector I've seen in my time with a crazy failure rate although some are in denial of this until theirs joins the long line of failures at some point. Nokta come out fighting saying their detectors are far superior build quality than the Nox indicating their Legend would be built tough and reliable and it's turned out anything but, with countless people complaining of problems with some examples being the speaker failing which seems to happen all too often, faulty PCB's, updating issues and an abnormal number of faulty coils, to me from what I've seen their failures are just as bad as any Nox ones, if not more so as they've happened so close to the release date and the problems extending into a range of parts on the detector where as the Nox was mostly leaking which may or may not be a valid warranty as who knows if anyone with a leak used it within it's limits. Yes I know the Nox had other issues like wobbly shafts and I'm certainly not saying the Nox was good build quality, neither of the two are. Fisher came out with the Impulse which was a shambles and had endless faults, although at least it was a beta detector, albeit one people paid for the privilege of testing for them. XP have had their share of problems with the Deus 2. It seems no brand is immune to making rubbish, I haven't had any problems with Garrett personally but their Apex certainly had its issues. I have an original early model Gold Bug 2, my antique and it works a treat, solid as a rock! I have an early Aussie Built GPX 4500 and it purrs along like the day it left the factory, in AUSTRALIA. Whatever happened to detecting companies building good quality products, they used to be able to do it.
  5. I had read in Bruce Candy's autobiography that some of the amplifier circuits he developed before coming to Halcro measured interference in the millionths of a part. Does anyone know if these super fast new detectors are approaching that level of efficiency? I'm trying to figure out how they do what they do... ...probably a dumb question...not my first...nor last...😆 cjc
  6. Here is a question for people who have had years of experience with using, selling, or engineering detectors. Has anyone ever heard if strong magnetic fields, say from a rare earth magnet on a pick head, bumping into contact with the control box have any potential for altering a detector’s performance? I didn’t think of this until I was scratching my head trying to figure out why I kept hearing lightning spikes on an otherwise on a crystal clear day. 😅
  7. Yesterday while detecting in mostly dirt, I got at least 5 good repeatable signals and just couldn't find the nuggets. My brother was with me with his GB 2, so I had him go over one of the signals and sure enough it was a small pellet sized nugget. I'm pretty sure now, that I was experiencing the well-known "Halo Effect" and after disturbing the soil, the nugget was just too small for me to pinpoint it. My Garrett Pro-Pointer wouldn't pick it up either. This is good to know and another way to keep getting those nuggets. The 6000 is amazing and despite its "turn on and go" reputation, I'm learning a lot with each outing. Will be interested in seeing any new coils that are coming down the pike.
  8. I think I know the pat answer, but if that's the case I'd like to see it defended.
  9. To be clear here I am talking genuine multifrequency. Not selectable frequency misleadingly labeled as multifrequency, so we are now supposed to say “simultaneous multifrequency” or SMF, to differentiate. Sorry, I’m calling BS on all that. Selectable frequency machines are still running in a single frequency. Just because you can pick the frequency is not new. Been around for decades! When I say multifrequency detector I mean multifrequency detector, a detector comparing two or more frequencies to get a desired result. I don’t need to change my thinking. Marketers need to stop calling selectable frequency machines multifrequency. It’s misleading, I’m not playing along any more, and handing out thumbs down to those that continue to do it. Machines are either single frequency or multifrequency. If you want to your your single frequency detector as being able to select frequencies, fine. But quit calling it multifrequency. Even Minelab never stooped that low, and they had single frequency detectors that allowed you to select frequencies, far before most did. So what was the promise? Or more accurately, the hype, of multifrequency? It has been that multifrequency detects all targets, large or small, high conductor or low, all at the same time. As opposed to single frequency, where each frequency is strong in one way, but weak in another. To this day I see this said in marketing, and I constantly see users repeating it as some kind of fact. More BS. As anyone who follows this should know by now, the underlying frequency mix still rules. Minelab calls it “weightings,” where each mix is weighted higher or lower frequency, depending on the desired end result. So we have high frequency weighting for gold prospectors, and low frequency weighting for saltwater, as the most obvious divide. Multifrequency does have an inherent strength over single frequency. Comparing at least two diverse frequencies gives more ground and target information to the system. This, in particular, generally results in better target id capability. There also is a very real ground handling advantage on mineralized saltwater beaches. But you can’t make multifrequency detector that runs in all frequencies at once, that will do the best on everything everywhere. If so we would not have all these different modes, Park, Field, Beach, and Gold. The end result is not much different than a selectable frequency detector. You have high frequency mixes, or medium, or low. Each serves a purpose. I still have to choose frequency modes, and it hardly matters if I am saying high single frequency for nuggets, or high frequency weighted mix for nuggets. If people were not told different, they would not actually know it is any different, except for the extra target id and ground handling capability. So stop with the “multifrequency finds all targets across the entire range” nonsense. There is no multifrequency detector made that runs in one mode, and hits tiny gold nuggets, while also working perfectly well at the beach. That’s what we are being sold, and it’s simply not true. This is from an old post of mine about Equinox, and it’s what we really have: Hottest (more sensitive to small targets, hot ground/rocks, and saltwater) 1. Gold Mode 2. Park Mode 2 and Field Mode 2 3. Park Mode 1 and Field Mode 1 4. Beach Mode 1 5. Beach Mode 2 Least Hot (less sensitive to small targets, hot ground/rocks, and saltwater) Now seriously, just how different is that from a range of selectable single frequency, high to low? What I’d to see is all this incorporated into a simple variable control. Instead of discrete modes and complicated explanations, give me a single control. Setting higher sets for progressively higher frequency mixes, setting lower goes to lower mixes. You simply set the control as high as your ground allows, which is basically they way we pick between the modes above anyway. Simplistically using my little chart above the control would have 5 - 7 levels. I think attaching names to the modes misleads people anyway. There is no reason not to use Gold Mode to Relic hunt, or Beach Mode to hunt silver coins, but people get locked into thinking those mode names mean way more than they do, and I think some peoples detecting suffers as a result. Get rid of the names, and it frees your mind to a more open approach as to which modes work best under and given circumstance.
  10. https://stoutstandards.wordpress.com/2022/02/26/youall-need-to-get-a-life/#more-47675
  11. Can someone explain how one nail can blind a person from seeing lets say a silver dime in test situation yet I have found coins with nails in the plug or in the hole close to the coin often in the wild. Actually the first silver I ever found with the Equinox was a almost slick SLQ. I got 30-32 signal and there were nails in the plug and hole. The quarter was still in the hole. This was 6"-8" deep. I even found another decent size nail in the hole before I found the quarter. The guy standing over me said it's just a falsing nail when I pulled it out. I said no the numbers were solid quarter, and then sure enough found the quarter. It has messed with my head that I can ever find anything when I see test that apparently blind a detector so easily. That's one reason I don't have much faith in any made up test.
  12. Analog detectors like Tesoro have a great sound. Tesoro being a single tone has a very good nuance to the sounds. Coins have a very smooth sound to them. You hear click and pops going through iron but no falsing. Tesoro and other analog detectors have a different sound on larger iron. You can tell it is iron and decide to dig or not. Personally I would like to see some new analog detectors. There are a some analog detectors available like the Deeptech Vista series. I liked the Vista Gold and Gold Gain. I would like to see Tesoro again!
  13. I’ve been watching and reading about iron bias just trying to figure it out and what benefits it might have and so on. I started playing with it on my equinox. I’ve got quite a bit of time on the equinox and settled on fe3 back shortly after they came out. Recently I thought I’d play around with it some and see what happened. Well, I wasn’t really to impressed with it and have since gone back to what I know. Original fe3 which from what I’ve gathered isn’t much iron bias at all. I don’t dig many bottle caps at all and if I dig big iron it’s because I’m trying to make a bad sound into some thing or hoping there’s a good target mixed in. I’m really not expecting anything good but I dig a lot of holes just to see what the sound was. Now I’ve got the Legend with a preset iron bias. I really didn’t know what to expect but they said “try it out “ so I did. I’m not sure where or how it’s set but I’ll tell you after this mornings hunt I doubt I’ll do the iron bias update. I went to an old farm site this morning that we have hunted a lot. Non ferrous targets are hard to come by and yes there is a lot of iron. I’ve personally hunted it with the deus and equinox and the area I hunted today has been walked over a bunch. I dug ten non ferrous targets and was just over thirty feet from the car. It was like it hadn’t been hunted…almost lol I guess the use it, set it, hunt it and learn what it’s saying has worked for me on the equinox. I don’t change the settings much at all now. I’m thinking the legend might be the same way. I’m no expert but I do find a few things. Love this hobby. Thanks for reading. Good luck and HH!!
  14. I just watched a video made by metal detecting NYC and the other guy that he was detecting with used that break in the threshold as an indicator of a good target. And it turn out to be was deep too. What actually does that break do? What is it blanking out on? Without getting into specific detectors, do any of you use that as part of your analysis of a target. I do know what threshold his but never did much with it as I have very bad hearing and any other sound (or lack there of) makes it even more difficult for me to hear good signals.
  15. A huge ruckus developed recently over the new Nokta Legend, and a debate over the desirability of an iron bias control. One main argument against such a control came up repeatedly. It’s too dangerous to include. The thought is it could be misadjusted by people who don’t know what they are doing, so it’s best left off. Really? The sensitivity/gain, if set incorrectly, can cause lost targets. Disc settings when set wrong, can cost lost targets. Recovery speed, if set wrong, can cost lost targets. Set the volume too loud, you can damage your hearing! I could go on, but I think I’ve made the point. Any control worth having will cause issues if set improperly. So will sweeping too fast or too slow, coil too far off the ground, etc. There is nothing especially different, or “more dangerous,” about the iron bias control, than any other control on the detector. Long story short, I’m not a fan of dumbing stuff down just because some people will not bother how to learn how to do something correctly, and mess with things they know nothing about. We have default settings for people who do not know what a control does, and they should not mess with the default, unless they know why they are doing it. And if they do, and they miss stuff, frankly, that’s on them. Don’t make people who do understand what they are doing pay the price, for those who don’t care to learn. They have plenty of models to choose from, while full featured models are few and far between.
  16. So I’m a at pro user for years picked up a simplex cheap so giving it a try so prob I’m having is it seems no matter how the depth meter shows the targets don’t seem to match for instance 2 arrows on depth indicator and for two different targets both two arrows one was not far from top of plug the other along with a few others as well were well over 4-5 inches so basically I’m wondering how accurate the depth meter is on my at pro it’s very accurate and tells me so I kind of kno how deep to make the plug this one different story maybe one of you guys can chime in with more experience thanks so much
  17. There is a debate on another forum about ground balancing a detector this was stated by another poster A POSITIVE ground balance means that the machines threshold INCREASES in volume as the coil is LOWERED TO THE GROUND. A NEGATIVE ground balance means that the machines threshold DECREASES as the coil is LOWERED TO THE GROUND. To achieve a NEUTRAL ground balance you want the machine to do NEITHER as the coil is LOWERED TO THE GROUND. For best results, especially for beginners who might be reading this…you want the machine to be SLIGHTLY POSITIVE…the machines threshold should INCREASE VERY SLIGHTLY as the coil is LOWERED TO THE GROUND. Again…absolutely no disrespect, but this is how this subject has caused SO much confusion over the years. People who have spent hundreds or thousands of hours running a metal detector STILL don’t know the basics of how they work. And ground balancing is about as basic as there is. I just do NOT understand how this can be. can someone explain to me what the purpose of ground balancing a detector as I know what I have been told but just want to make sure I am understanding it correctly this was stated on another site but to me it does not seem totally correct or is it correct everything I understand about ground balancing it does not have anything to do with the threshold or does it just trying to clear this up in my mind
  18. A question for the pros here. I was watching a treasure hunting show and they were looking for a lost mine using a Whites TM 808 Treasuremaster which they claimed could detect gold or silver deposits down to 20 feet. I will preface this by saying I know about mining with excavators, trommels, & sluices but no nothing about detectors. What I am interested in is something that could detect large, concentrated gold deposits of 50 ounces or more that I think are buried in a rich faultline. The depths could be several feet or much deeper. Some of these deposits I suspect could be in the hundreds of ounces or more. Are there detectors capable of this & if you own one I would be interested in talking with you. Thanks.
  19. Gold targets overlap the ground balance range, and eliminating either salt or any ground, eliminates a certain class of gold target. In PI nugget hunting circles this is known as “the hole”, when nuggets get eliminated by a certain ground balance setting. This happens with low end targets like a small gold nuggets, thin gold chains, single post ear rings, and broken gold rings. The results you get depends on the ground balance or salt elimination settings (when available - many detectors have a salt setting, most do not). You can air test for this by using a single digit target id item, and testing with salt balance on or off. Also test same item, running ground balance to both extremes. Test both settings separately, and in combination. Note that at certain ground balance settings the item may get weaker, or disappear entirely. This does not apply just to small targets, but any target that has a weak signal. Any large item buried deep enough becomes a weak signal, so in theory all targets regardless of size are affected by this, if they are at fringe detection depth. Single frequency detectors without a salt setting can balance to salt, or to ground, but not both at the same time. Whether they can balance to salt depends on how far the range of the ground balance control has been extended. A machine that is ground balanced to eliminate a salt response may get a weaker, or no response, to many single digit id targets. Multi frequency machines can eliminate both salt and ground at the same time, but this can actually work against you, by doubling the chance of some targets being missed, as you now have two “holes” to deal with instead of one. Advanced processing can compensate for this to some degree, however, by comparing results in both channels, and accepting targets that exceed certain parameters, bringing some missed items back into the game. This stuff can get tricky and complex on the processing side, invisible to all but the engineers who designed the circuit. What this means is a person on a low mineral locations will see different results that people in high mineral locations, not just because of the mineralization, but because the more aggressive ground cancellation settings may be affecting the target. Most metal detector testing and reporting is inherently flawed, because people do not report Fe3O4 results, and use ground balance settings as a flawed methodology for determine how bad the ground is. Comparing detector results without knowing the exact ground composition is a crap shoot at best, and often almost a waste of time. A White’s MXT example, many machines similar…. From the manual: The Salt position provides an extended ground balance and tracking range to compensate for conductive salts also called alkali. Ground rejection against salt/alkali slightly overlaps the lower end of the conductive target (metal) range. In other words if you ground balanced against significant salts, some loss of sensitivity to lower conducting metals (metals low on the VDI target scale) can be expected. The advantage and performance improvements of rejecting the salt, however, far outweighs any loss. Because the Salt TRAC setting can track well into the target range it is not recommended for normal conditions, only for areas known to contain salt. Salt water beaches for example or alkali desert regions. The Ground setting will not track into the nonferrous metal region. The Salt setting will. The MXT 300 ground rejection system is capable, in both the Ground and the Salt settings, of considering some iron a ground mineral. (Emphasis added). More on gold and saltwater
  20. Not really, at least not yet, but the look sure is getting similar. https://www.amazon.com/F50-MTK6735-4000mAh-Android-Smartphone/dp/B081DTQHMP
  21. I’d say my predictions for 2021 were pretty spot on, with only XP surprising me with the Deus 2. 2022 looks to be less exciting in a way, as all the excitement just happened. That and White’s left the scene entirely. So we have XP and Nokta/Makro already on the scene with their big 2022 reveals. I guess a PI from NM is next up, but as they have not even got a Legend to market yet, I can’t really imagine a new PI until next year. Minelab bounces back and forth between gold machine and coin machine focus, and with GPX 6000 in the bag, a new coin machine would look to be next, especially with the E-TRAC just being discontinued. But Minelab releases are almost always foreshadowed in Codan corporate reports, and no hints there yet. Watch closely for the next one, to see if there are any reveals. But lacking that I’d say fall at earliest, and possibly slipping into next spring, as these things often do. Again, watch the corporate reports. First Texas? Still just trying to get the beach PI out the door, and went awfully quiet on the gold nugget version. All of which is funny to me, as hardly anyone wants a new PI from FT, but something to compete with the newer multifrequency detectors. Lots of old model VLFs discontinued, I’d have to think replacements are in the works. The question with FT these days is their ability to execute on the top end, and no matter what they do, holding back while bugs get worked out is a good idea. Which leaves Garrett. They bought White’s, and except for continuing with the 24K we have seen little development on that front. No surprise really…. it takes a while to digest a purchase of that size. Personally, I do not expect any other White’s models to be revived. If they were that great White’s would still be here. Apex was a surprise, but as an Ace model it’s not the higher end model people here are looking for. Obviously in the works, but when? Garrett moves slowly, so I’m not holding my breath. I’m cautiously hopeful about the future with Garrett, but it’s very much a wait and see deal with them. So to sum up, not a lot to really hold one’s breath over after the Deus 2 and Legend introductions settle down. I admit my interest in new machines is waning, as we have hit some walls in the technologies, and real advances are going to be very rare at this point. Some hints dropped about bi-polar PI at Fisher, but given they can’t get an old tech PI out the door in short order, waiting around for that seems like a poor bet. In general, all I see coming in the future is better packaging, improvements in ease of use, more power at lower price, etc. But as far as actual power, I’ve already got most of the best of what is available, and I don’t see much in the way of genuine new capability coming my way. That’s fine though. Compared to what I started with 50 years ago we’ve come light years in capability, and I am quite satisfied with what I have now. All I need is to do is find new places to detect, not wait for new detectors. I suggest you do the same.
  22. Hi, in my country it is difficult to get a permit for a metal detector so I was thinking of using a pipe & cables locator to find gold. the problem is I can't buy from Ffisher or Whites or any company that also makes metal detectors as it will be recognized and confiscated by customs. but I can buy detectors meant purely for utility like the Amprobe AT-3500. my question is can I align the transmitter and receiver perpendicular on a bare like the gemini 3 or similar devices? I mean to cancel the interference between the receiver and transmitter?
  23. Hi, I think of buying the Quest Scuba Tector Pro (https://www.amazon.com/Quest-Scuba-Tector-Metal-Detector/dp/B08HQYH81T), it is a Pulse Induction detector, i intend to use it on land so i need more depth hence i want to build a 15 inch coil for it, by measuring the inductance of the stock coil and building a 'similar inductance' big coil, will it work? also, does the pulse power also affects the depth, i guess from the small battery and the advertised 14 hour life that it is using less power per pulse, if power maters then will using a 20% lower resistance for the new large coil (thinner wire) help force a bigger current and consequently more power (assuming it is driven by a voltage generator)? note: I know i can find many similar models with big coils but for some reasons am limited to this particular detector and I want it to find gold jars 3 foots in mineralized ground
  • Create New...