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My detecting mate and I have been working a dry gully for quite a while using our 6000’s with 10x5 Coiltek coils attached. We had been finding a bit of small gold but lately our returns diminished and we had almost decided to move to a new location. In a bid to squeeze out a few more pieces, we decided to detect the ground with our 7000’s and try to uncover a few deeper nuggets. We weren’t expecting much as we had spent a considerable amount of time working this area on the short gully and thought that if we could come home with a piece or two we would have achieved our goal. The Six with the small coil really suited this area as there were many potential gold traps and hiding spots for the tiny pieces that inhabited this location. The Zed’s were fitted with Nuggetfinder 12” Z search coils and after a ground balance and tune were running exceptionally well. The hot rocks and noisy ground that played havoc at times with the 6, were ignored by the 7’s so we knew that we had a bit of potential to find that really subtle signal. We moved slowly and tried to get into difficult areas and hopefully jag something for our effort. After about 20 minutes we added a couple of small pieces to the rattle jar from steep banks on the sides of the gully. It was agreed that the shallow pieces would have been picked up easily with the 6000 but were now happy that we hadn’t been “skunked” for the day. Joe was working a stretch of ground that had produced well for us in the past so I decided to move upstream about 50m to give him some space. I started at a rock bar that had given up some treasure about a month or so ago. We had pulled about 6 very small pieces on and around the outcrop and made a concerted effort to cover all the ground in that area very well. Every subsequent trip resulted in a repeat of that process just in case we missed something. The same region was detected today with the Zed and to my surprise, a very faint signal was heard. It was in an ideal location next to the rock bar on the inside section of a bend. You can see the hole in the photo. We had hoped to find a piece of gold at a depth that the Six couldn’t see and it finally happened. It must have been on edge as the signal was initially very soft and only increased during the dig. What popped out was a pleasant surprise. The 6000 has dominated our detecting for a couple of years now and the Zed barely gets pulled out of the cupboard. It was good to get its coil scraping on the ground again and put through its paces. We had forgotten how quiet it could be when the ground suited. We had also forgotten about digging deep holes until we were quickly reminded of its power. Rusty nails and bits of steel with soft enticing signals generally resulted in ugly growls and swimming pools being dug half way to China. We moved upstream and continued to detect some old ground looking for that deeper target. I was lucky enough to get a really faint signal behind a large rock. After digging a deep hole, a small, shiny nugget surfaced. I could see why the Six would not see a piece of gold at that depth. When the hole was inspected with the coil, another break in the threshold told the story of a surprise awaiting inspection. When a piece of gold ended up in the scoop, I called Joe over and we started moving rocks and detecting a small area thoroughly. A bunch of small pieces resulted. We had a lot of fun working that area together. Joe finally moved 20 metres upstream and found another patch of deep, small pieces of gold. The river worn gold was often visible in the scoop or in the ground like the piece shown in the picture. Joe pulled a couple of pieces on the walk back including one that was in a pool of water. Boots and socks came off and a slow and frustrating recovery followed. It’s great to see a prize for all the effort put in. The final picture shows the result of our day out. Quite a few of the pieces were so small that they wouldn’t move the scales but they all added up. It is pleasing that the Zed can still earn its keep on the tiny gold. Most of the pieces found would still be in the ground if we had used the 6000’s on this trip. Having a combination of machines has proved to be a winner in this area.

I'm surprised nobody has discussed the target ID hack on the Axiom, and if they have and I missed it, congrats for finding it and sorry for claiming fame to having discovering it! Many of you already know iron check grunts at most nuggets the size you really want >5g. I found the former undocumented "feature" because the latter "feature" couldn't be trusted. "Wait, WHAT!?" If you don't know iron check grunts at nuggets, it does. I won't get into it here. But target ID...This could be a common thing with PI detectors. I haven't had my hands on enough to know. But I have watched a lot of videos of people detecting nuggets, and not one have I heard mention this with any machine. I traditionally dug every single target. But as I've been scouting new ranches to guide on, I have had to work fast and use my time wisely. I can't spend months poking around a property to determine if it is viable. Turn on ground tracking, medium or fast mode is fine. I prefer medium to get a better reading of a section of ground under my sweep without taking too much time. I find in most ground in Sierra Nevada's foothills, the Axiom's balance window really likes to settle around 42/20, give or take. And if you place a small piece of gold on the ground, settings appropriate not to overload, and sweep it, you'll see that ground window shift to around 42-44/20-22, if it wasn't already there. Now, toss down a small piece of iron. This is dependent on conditions, but your ground balance window will drop to 20s-low 30s over as little as <10. Usually a strong iron signal is <33/18 before I walk away or dig it anyways. But depending on the ground, the size/decay of iron, the iron window, and depth, the window may also move UP to 50/30, or with small iron targets like rusted out wire, even tighten up at 70/50 (Brass does the same). Natural gold, in my experience with a lot of different pieces, will always pull the balance window as close to 42/22 as the conditions allow. I spent an entire day testing this out in some really tough ground that had everything in it to make your life miserable. I was digging iron wires the size of one of my trimmed beard hairs all day and was testing each new section of ground with one of my vials with a test nugget in it. We ended that day with a bang. A sore back and $1,200 in gold. I have not tested this with the mono coil. Only the DD-FC coils. It's important to note this isn't a hard number, or hard range you're looking for. You need to bring some gold, iron, and brass with you and every so often, if you find yourself working an area that is a bit trashy but you know has gold, use the test targets and find the baseline range for each. Also take mental notes of the range of each target before you dig it, and connect that range with the type of target. Of course, lead also likes that same window as gold. Sorry, keep collecting those bullets.

Nokta Detectors The Legend Software Update - Version 1.15 Updates Made: 1. Deep Target Identification (dt) feature has been added. This feature allows non-ferrous deep targets, which are masked or detected as iron (ferrous), to be detected as non-ferrous. To access this feature, select the Recovery Speed setting and press the pinpoint button. When you navigate with the right and left keys, the letters "dt" will appear on the right side of the screen. You can change the value of the dt setting between 1-6 by using the plus (+) and minus (-) buttons. When it is at 0, this feature is off. When you increase the value, the stability of the device may diminish. This feature can be used in all modes with both multi-frequency and single frequencies. 2. Beast mode has been added. Very deep targets may have values close to the surrounding soil and therefore may not be detected. Beast mode allows you to detect targets at depths that cannot be detected in other modes. This mode resets the ground balanced soil, allowing deep coins and large masses to be detected by the detector. However, in this mode, targets at fringe depths may not give an ID or their ID may be unstable. When switching to Beast mode, All Metal discrimination pattern will be selected automatically. When switching from Beast mode back to Gold Field mode, the last selected discrimination pattern in Gold Field Mode will be restored. To use this feature, simply press the frequency key in Gold Field mode. Beast mode is indicated on the screen by the letters ‘’bE’’ under the multi frequency symbol M. 3. Second ground balance feature added in Beast mode. Due to its configuration, Beast mode may cause the device to give false signals to ground changes and mineralized/hot rocks. This may cause discomfort to the user during detection. Beast mode offers users a 2nd ground balance feature to overcome mineralized/hot rocks, red bricks and other ground changes in the surrounding environment that have different properties than the soil that’s been ground balanced. With the second ground balance, depending on the properties of the hot rock or brick, in some cases, complete silence can be achieved over these falsing targets. In other cases, a broken signal may be heard. Broken sounds indicate that the detected target is a mineralized/hot rock. To use this feature, press the Ground Balance button to access the setting. Then, activate the 2nd ground balance feature by pressing the Frequency button. When the 2nd ground balance is activated, the number "2" appears on the screen above the letters Gb. You can perform the 2nd ground balance by pressing the pinpoint button. When Beast mode is selected, 1st and 2nd ground balancing can only be performed automatically. Manual ground balancing is not possible. You can switch from the 2nd ground balance to the first one by pressing the Frequency button again. 4. Ability to reset the 1st and 2nd ground balance settings in the Beast mode. While Beast mode is selected, the ground balance value is reset by entering the ground balance menu and long pressing the up button. When the button is held down, the animation is shown on the screen. To reset the 2nd ground balance value, first activate the 2nd ground balance. Reset the 2nd ground balance value by pressing the up button again. 5. Updates have been made in the Ground Balance Menu. a. When selecting between FerroCheck (FC) and Mineralization Indicator (GI), the 'FC' or 'GI' indicators displayed on the right side of the screen have been moved to the left. b. The 'FC' or 'GI' indicators which remain on the screen until exiting the menu will be automatically cleared from the screen after 2 seconds. c. When the Tracking feature is activated, the ground balance level flashes on the screen. In Beast mode, when the Ground Balance 2 is activated while the tracking feature is on, the ground balance level will be shown steady to avoid confusion. 6. "Iron Rejection" feature in Beast mode. Beast mode, like the Gold Field mode, produces signals for both non-ferrous and ferrous targets by changing the frequency of the sound according to the strength of the received signal. In order to distinguish ferrous targets, especially those closer to the surface, depending on the signal strength received from the ferrous target, the device emits a lower tone than that of the non-ferrous targets with the frequency varying according to the strength of the signal. To access this feature, select the Recovery Speed setting and press the pinpoint button. The letters "Ir" will appear on the right side of the screen. You can change the value of the ‘’Ir’’ setting between 1-5 by using the plus (+) and minus (-) keys. When it is at 0, this feature is off. When the value is increased, the probability of emitting a ferrous tone for deep non-ferrous targets increases. 7. General improvements have been made. Visit Software Update at noktadetectors.com: https://www.noktadetectors.com/metal-detector/the-legend/

So if you have read other posts of mine, you know I've had problems with some of my detectors. My new to me, but used garret atx (shipped off yesterday for repairs), my new to me, but used fisher goldbug 2 (just got it back from getting repaired yesterday), and now my nokta gold kruzer (bought new a few months ago). Here's the story on the nokta GK. When I first received it, I solely used the small DD coil. I probably had it out in the desert looking for tiny lead a half dozen times. It ran smooth as can be in max sensitivity almost everywhere I went. One day I hit a wash with tons of hot rocks and black sand. The Gk started overloading like crazy. I turned the sensitivity down till it would stop overloading and ran smooth. Ended up at level 60 . (99 is max..70 is default). When I got home, I rinsed off the coil, and turned it back on. It overloaded instantly at the default setting of 70. I'm thinking I must have some black sand in the coil cover. Removed the coil cover and rinsed clean again. Same issue, overloads in mid air at default settings. I put it away, and figured I'd look at it later. Long story short, it improved, but not fully recovered. No matter where I'm at, it overloads as soon as you set the sensitivity to 90 or above. The threshold has never been as smooth as it once was either. I swapped to the larger 10" concentric coil. Works perfect...smooth as can be at max sensitivity. I contacted nokta and explained my issue, filled out the form. Several days later I get an email saying a new coil is on the way. It arrived today. I grabbed the GK, went to pick up my new coil, and stopped in a nice open area to test it out. First I powered it up with the original coil..set sensitivity to 90..it overloads in the air like I expected. Next, I throw the new coil on. Power it up, and it instantly overloads at the default sensitivity level of 70. I turn it down to 69, and it stops. I ground balance it, and swing it over a bit of ground, then touch the coil to the ground, and it overloads. I shut it off In Disappointment and head home. After dinner I remember I need to bring it in for the night. I grab it out of the truck, and power it on, just to see how it acts in my yard. No sound...it's powered on, but no sound at all. I swing it over my truck and not a sound, and no reading on the display at all. It shows its powered up and that's it. I power it off...unplug the coil..plug the coil back in..power it on...still no sound or signal. Now I'm thinking my detector is broke. I put the original coil back on, and it was music to my ears...sound on, and gives signals as it should. I know what you are all thinking, because I'm thinking the same thing! The only common denominator is ME! tell me I'm wrong. I do want to close this off by saying, I love the gold kruzer, and its an amazing machine, and nokta's customer service has been top notch so far. Looks like I need to contact them again. I'd buy the GK again in a heartbeat.

I've owned the Minelab Manticore since release and have owned the M8 coil since last Fall. I'm fairly new to using a metal detector for gold prospecting. But I've done it long enough and used a fair amount of different detectors (both PI and VLF) to recognize when something special comes along. For gold prospecting enthusiasts seeking a powerful tool to uncover gold nuggets, the Minelab Manticore equipped with the M8 coil stands out as a excellent choice. Slightly different from Multi IQ, the Minelab Manticore uses Multi-IQ+ technology. Similar to Multi IQ, Multi IQ+ simultaneously utilizes multiple frequencies, ranging from low to high, this technology is particularly advantageous in gold prospecting, where varying ground conditions and target sizes demand precision and adaptability. I'm not going to pretend I know what the difference is between Multi IQ and Multi IQ+ is, but there's definitely something different going on inside the Manticore vs the Equinox 800/900. I think one obvious advantage of Multi IQ+ is ground handling and the ability to separate targets from ground signal. Equipped with the M8 coil, the Minelab Manticore is finely tuned for gold prospecting in challenging terrains. The compact size of the coil allows for exceptional maneuverability in tight spaces, such as rocky crevices and densely vegetated areas where gold nuggets may hide. At the same time you have fairy good ground coverage with the M8 coil. Also, the M8's sensitivity allows a person to find even the smallest gold nuggets with confidence. One of the greatest challenges in gold prospecting is overcoming the effects of highly mineralized or alkaline soils, which can mask small gold nuggets and produce false signals. The Minelab Manticore offers a range of ground balancing options, including automatic, manual and tracking modes, allowing you to adapt to changing soil conditions and maintain maximum sensitivity to small gold nuggets. I'm not a big fan of tracking ground balance because I've experienced both small and deep targets being tracked out on previous metal detectors. However, with the Manticore I've had little issues with either of the above and use ground tracking with confidence. In the places I hunt, alkaline soil and hot rocks offer unique challenges for VLF metal detectors. Coil knock and constant ground noise are some of the most common. The Manticore is still challenged with coil knock, so coil control is essential when using it in rocky terrain. Ground noise on the other hand, the Manticore seems to handle quite well compared to the Equinox and other SMF detectors I've used in the past. With the Manticore ground noise is more of a background annoyance that's easily decerned from a gold nugget or other small target. Identifying gold targets amidst a sea of hot rocks and other metal objects is essential for successful prospecting. The Manticore offers precise target identification capabilities, thanks to its customizable discrimination settings, expanded target ID range and 2D target trace. By fine-tuning discrimination levels and analyzing both target ID and 2D screen readings, you can easily distinguish between hot rocks, ferrous and non-ferrous targets, prioritizing ferrous signals for efficient recovery. A person wouldn't think the 2D screen would be much use when gold nugget hunting. But on the contrary it's become one of my favorite features of the Manticore. Shallow targets generally trace right on the center line, deeper targets trace just above the lower ferrous limits or just below the upper ferrous limits depending on depth and soil mineralization. The expanded target ID range is another welcome improvement over the Equinox 800. With the 800 most small gold had a target ID of 1 or 2 which also encompassed small foil and other tiny non ferrous targets. The Manticore on the other hand with it's expanded target ID range makes it easier to decern between small gold and other unwanted small items such as foil and small bird shot. That being said I've had nuggets under .20 grams come in anywhere from 1-9 so you still need to be carful. But with an area loaded with an item such as small foil that generally ID's at 1-2, you can cherry pick to some extent and still find small nuggets. I've really enjoyed the Manticore the 100 or so hours I've had it out gold prospecting and feel like it's the perfect companion to your favorite PI. The settings on the Manticore I start out with when I get to a site are: Gold prospecting mode, prospecting theme, sensitivity 19, recovery 6, stock ferrous limits, stock disc pattern (horseshoe off), ground balance tracking. I then make adjustments when necessary which can include raising/lowering sensitivity, raising/lowing recovery, using fixed ground balance, notching out hot rocks or running the horseshoe on. Below are a few videos I've done using the Manticore gold prospecting. Enjoy

It is logical that minelab wants to fill a place in its line of detectors, and put on the market a detector that is somewhere between the X-Terra Pro detector and the Equinox 600/700, 800/900 family of detectors. One thing must be said here... that Minelab did not hurry and wait for what the competition will put on the market in this price segment... So I'm expecting a Vanquish class entry, but I feel that the new multi-frequency detector will already have a ground balance...

Noktas keeping them on their toes. No doubt it will have ground balance and be better than the Vanquish for design too. I love competition. Next will be the lower priced PI to compete with the Algoforce and Nokta PI.

Honestly, I hunt like the video demonstrated for days on end whether it is at a "ghost town" site like the one in the video or even just hunting on some of the park sites in my area. Granted, I did have the recovery speed a little higher at that site than I normally use on less nail polluted sites which does shorten the length of the audio response. So for me, it's not just about the digital versus hybrid versus analog audio. It's more about can these Tesoro like detectors actually hunt some of the sites I go to? At sites like that where there are thousands of nails, unknown hundreds of thousands of hot rocks which VLFs will give a response on and ground mineralization from magnetite that is off the scale, if I choose to use a VLF, it has to have really good simultaneous multi frequency operation in order to have half of chance at determining that there is actually a non ferrous target under the coil, way before any audio response. Otherwise, a single frequency detector no matter how good it is will just call that zinc sitting on or near the surface as mostly or totally an iron target. That was the issue that I had using the Lobo Super Traq and Vaquero at that site along with many other single frequency detectors. The Tesoro's discrimination circuitry simply could not function at that site due to being next to impossible to ground balance on the magnetite mineralization and the amounts of iron trash. Many other single frequency multi tone capable detectors would call coin sized and smaller surface non-ferrous targets iron due to similar poor ground handling or just give an overload response even with their coils lifted off the ground. This is why I would be very interested in an SMF Deep Tech.

I think every major detector has its certain features a person could miss, I do wish the Nox and Manticore series had the display of the V3I, but hey the BFO detectors I built in the late 60s from Transistor Radio parts didn't need no stinking ground balance, you just tuned it constantly as you went, and they pinpointed better than actual pinpointers do today , with a Geiger Counter type tick that increased in speed the closer to a target. Thanks for the memories Steve.

Back in 2014 I got a smoking deal on a like new used White's V3i with over a year of remaining warranty. It was my third after the original Vision and then later a V3i. I quickly found a platinum ring that almost paid for what I had into it, but unfortunately I got busy on other things and when the warranty was about up I sold it. Well, I have regretted it ever since. The V3i is a unique detector that represents the end result of a design philosophy that I do not think we will see exceeded. You have programmable access to nearly every function that exists in a metal detector along with amazing control over the audio and visual interface. The bright, sharp, colorful screen has never been done better on any other model in the ensuing years. Owning the V3i is very much like owning a "design your own detector kit". I am very much not a person to have nostalgic feelings about metal detectors or to ever hang on to any very long. However, the V3i is in a class of its own in many ways and I decided if there was ever a detector I should just buy and keep it is the V3i. That being the case I decided to get a brand new one from the factory. I may very well end up using this detector to shoot a series of instructional videos about general metal detecting theory and technique. The functions and colorful screen can be used to well illustrate almost anything I can think of when it comes to metal detectors and how they work. Don't be holding your breath however - me getting around to doing some things like finishing the ATX Strip and Rebuild can sometimes take years! I finally had reason to drive west to visit family recently, and made a swing by White's a part of that drive. I contacted forum member Tom Boykin (tboykin) who works at White's to set up a good time for a meet and greet. And so it was I found myself heading for Sweet Home, Oregon! Click on photos for larger versions. Aerial view of White's facility.... White's sits across a bridge from the main of Sweet Home right on the banks for the beautiful South Santiam River.... Cross over the bridge and turn left and there is the sign... First thing you see entering the main office building is a little detector showroom... but the main attraction is a large display of old White's detectors and items found with them.... Here is the old BFO Nugget Master with dual meters. Ken White Sr. loved huge boxes, lots of knobs, and big or even multiple meters - I doubt ergonomic was even in his vocabulary! The big boxes were often empty with a little circuit board tucked in a corner. Next to the Nugget Master is an original type blue box Gold Master, part of the old T/R series. These are just collectors items folks so don't be tempted to buy one thinking you are getting a decent nugget detector - only the black box versions can be considered as modern detectors. The old blue box versions don't even ground balance. And a real sweetie, the Treasure Master! Anyway, I was running a tight schedule, arriving at Sweet Home at 11AM and heading on to Reno around 2:30 getting home near midnight. Tom was gracious enough to give me a tour of the facilities where I met faces both new and old, and he bought lunch to top it all off. Then I picked up my brand new V3i (which I really am going to keep) and hit the road for Reno. Tom is an engaging young man with infectious enthusiasm and we are lucky to have him on the forum. He is still relatively new to detecting so go easy on him. The fact is though it will be people like Tom that take metal detecting to the next generation. Thanks for the tour Tom! For those who have not been so lucky check out the White's Electronics Factory Tour Video. And finally, here is my new baby still waiting to make its first find...

I have a bank of bench gravels on my claim that is some distance from water, with precarious tailings piles in between. I'd like to take samples along the length of the bank, but I don't want to haul a bunch of heavy buckets across dangerous tailings piles to the water. Then I got this idea. If you open up the Axiom's ground balance window (press and hold the GB button until you get a double beep) and sweep it across a sample area of the bank (lets say 6' X 6") it should give you an average for the mineralization for that sample area. Then you repeat the process taking sample readings along the length of the bank. The most mineralized areas (hottest) that have the highest GB window numbers, may be most likely to contain more gold. I'd then haul buckets from just the hottest areas, reducing my chances of breaking a leg. 🙂 Does the idea of using the GB window to pick the best samples from the most mineralized ground seem sound?

When you say original Gold Bug do you mean the 1990 analog model or the first digital version? The link to the manual for the original Gold Bug (analog) is in the post above and is where you need to start. The only Fisher video about the model simply showed how to put it together and not worth watching even if you could find it. The machine was one of several featured in an old VHS video Gold Nugget Prospecting : Metal Detecting With The Pros* but never made it to DVD or YouTube as far as I know. You best bet is the book Advanced Nugget Hunting With the Fisher Gold Bug Metal Detector by Pieter Heydelaar & Dave Johnson is an excellent primer on the use of the original Gold Bug model, linked below. There is not much to tune. Put it in Motion Mode. Turn Volume and Sensitivity to max. Set Threshold for a barely audible buzz. Ground balance properly (see manual). *Gold Nugget Prospecting: Metal Detecting with the Pros Authors: Ronald W Driscoll; Kathleen Driscoll; Brent Reason; Graham Alcock; Larry Sallee Publisher: Westwood Production Co. Prescott, AZ © 1994 Summary: You'll learn detector set up, basic research, dealing with hot rocks, types of ground to look for, where to go, coil control, patch gridding, implements needed, and view a small commercial operation using a metal detector. Featuring Larry Sallee, author of the book Zip Zip: Mastering Your Nugget Detector showing how to detect with the White's Goldmaster II, Bob Gutowski a.k.a. Nugget Bob with his Fisher Gold Bug, Floyd Allen a.k.a. Frugal Floyd with his Minelab XT 17000, and Glen Anderson with his Tesoro Lobo. All filmed in the field in Arizona.

https://www.minelab.com/community/treasure-talk/specific-ground-balance-on-the-gpx-detectors I was curious if anyone uses the specific ground balance method with their 5000’s in areas with high iron content and uniform ground conditions that are hard to get a ground balance in Gen. ground balance. Attached is Phil Beck’s from Minelab’s write-up on it.

Below are the results from a couple of days pulling apart mullock piles using the Manticore with the M8 coil . For the likes of Reg etc. I will preface this post by declaring I am in no way a prospector and have detected for gold probably less than 20 times in my life . And yes , my gold is certainly fly poop ! Of course I hope to stumble over a larger piece but meanwhile as a person who detects metals I find it utterly fascinating how small a gold piece the Manticore can find . I am using a version #1 machine that was one of the early machines into Australia . Gold mode , recovery 5 , sens 22-24 . Have experimented with tracking on and off finding that I cannot track out a small bit . Ground balance here is running between 40 to 54 . I am not using all metal mode . Gold is coming in at 6 to 9 in the sizes below . Hot rocks in the 20's and clearly in the non ferrous area on screen . Also 1 and 2 have so far proven to be rubbish . Signals on gold have been very clear and easy to call as gold , except for small lead . The area I am hunting has very high E.M.I. which drives my Nox nuts , but silent running here for the Manticore . The only drawback is coil knock sensitivity so requires good coil management , ditto for the Nox . Two days hunting with the second day being with two mates using their 6000's , they found nothing ! I have to say I have no wish to find gold any smaller unless it's in a pan . The Nox with a 6" coil may be superior on bits below .04 gram but above that I believe the Manticore is well in front . Sorry about the quality of the pics . I have no macro function on my camera and feel rather jealous of some of the pics on the forum .

The question, does it need another update, I think I am still in the yes category. Beaver tails are running from 19 to 28 maybe it's like that for everyone ? If your in an old park passing up beaver tails means loosing any chance of 1 dollar gold and nickels. Its also amazed at the range of memorial copper pennies, mine are running as high as 85-89. I have also found a ground balance issue (while using the M8) that I have not heard discussed, let me know if I missed a thread at some point. Oh and the depth indicator, mine usually shows maxed out on a 6 inch penny or dime ? Four arrows with a 4 or 5 inch coin? My ground balance is often under 10 that is mild right?

I’ve heard in non-variable ground of highly concentrated iron that the GPX-5000 specific ground balance has a slower tracking speed and will help get a better ground balance, but I will have to try this out when I get back to Gold Beach and see if it handles the iron any better especially with a DD coil. Anyone tried using specific in these iron enriched environments with any success on the 5000?

Nice reporting Mitchel, now find a ring! The target id is not ferrous versus non-ferrous. It’s a PI not a VLF. It’s more about small or low conductive targets read low numbers and large items or high conductors read high. Small ferrous reads low and in general the larger it gets the higher the number. So ferrous can occur anywhere on the scale depending on size. A big advance over existing PI options is that a coin will read with a repeat number as will other standard items. But don’t expect VLF rule ferrous vs non-ferrous discrimination. Some DD coils can work / detect items on the AlgoForce although only one half of the coil is active and results with the target id may be out the window compared to the mono coil. It’s tuned for mono coils. But noting what numbers a particular coil produces on standard items will still be helpful. Interesting a DD worked so well for you since only half the coil was working. You might want to confirm that as the info is minimal about DD coil operation on the E1500. As far as depth the E1500 falls above Infinium level performance and slightly below Axiom level performance as I explained previously here. Close to Axiom on small stuff falling farther behind a larger stuff, more in the same ballpark as ATX. It will beat a TDI that has ground balance engaged but if you turn off the ground balance on the TDI it will be another story.

I think you are missing what I am saying when I say Digital I mean these detectors on a stick like the Legend and the Nox series detectors and several others with inaccurate target IDs and things like that, maybe i am stating it incorrect, don't really know All I can tell you is the detectors I am referring to, have no computer screen with confusing settings to set up, you ground balance set your disc to what you want to disc out and start detecting, for me personally they have made detecting fun again and for me personally that is what detecting is supposed to be (FUN), for me personally you should not need a degree in setting up a dang computer (Detector), for the ground you are detecting.

ATX or for the worst of the worst, Infinium. VLF is no good in that stuff. A high power PI will blow back on you. The key is having both ground balance and a pulse delay. The ATX and Infinium both have a pulse delay control although Garrett marks it as a discrimination control. I picked up a used Infinium last year because I can get it to work on almost pure magnetite running a 10x14 mono coil, a feat most other PI detectors like my Axiom fail at. The secret ironically is the Infinium is not overpowered, and simply advancing the pulse delay until it is stable is the main tuning method. A DD may be needed. You will of course not hit small gold items and depth will be somewhat limited, but you will be able to detect. I get ring and coin type targets exceeding 12". If not, then the ground is simply undetectable, and yes, there is such a thing. If magnetite content is high enough it is like trying to detect through an iron plate. Where I’m detecting. This is not black colored sand but magnetite, same stuff you are dealing with. I've seen people confuse black colored material derived from slates, shales, or other dark materials with true magnetic black sands but they are not the same thing. Pure magnetite often has a gun metal blue sort of look to it. The easiest way for the uninitiated to know is simply drop a magnet in the stuff. Non-ground balancing machines like the Sea Hunter or Impulse AQ can also be made to work if you advance the pulse delay far enough. TDI is a good possibility. My Infinium chestmount with 10x14 mono. I really, really like that coil, a real gem. The advanced pulse delay eliminates thin foils. Small surface targets like hair pins read on both edges of the coil, a double blip response, and I generally ignore surface stuff unless larger. Larger targets will read in the center of the coil where small targets only hit on the edges. I mainly look for mellow centered high tones. As a ground balancing PI the Infinium breaks targets into two classes, high tone and low tone. Low tones are generally high conductors like pennies, dimes, quarters. I normally skip those in favor of high tone low conductors - rings and nickels. The tones work to full depth. Long story short with tones and a good coil as close to discriminating PI as you can get.

skywatcher Way back in the 1980s I managed to work a similar patch with a Garrett Deepseekers ADS VLF detector. What I did was used the TR discrimination knob and tuned it to the black sand like normal method by TR knob and not the ground balance knob. This work good but had to dig every signal, and got a large number of Aus. coins from it that other could not work the spot.

If you are talking about a situation where VLF detectors can no longer work reliably on black sand... we are talking about a case where the concentration of magnetite in Black Sand exceeds the value of 30% or more... another thing is that even if some VLF detector is able to work with such a concentration of magnetism/ in the case of a reduction in RX gain, or the use of a coil that is less sensitive to the X signal/ ...according to my experience.. the range of the VLF detector will be severely limited.. If I were you, I would try a PI detector with ground balance, which has a timing setting... for example Garrett ATX, where another plus is its water resistance..., and another advantage is that you can also use coils from the PI Infinium detector/ which are of classic DD construction of various sizes/ and the detector is still waterproof... using the ground balance and timing settings of the PI detector will help you eliminate the signal from magnetite... as well as the salt signal on the beach... while still maintaining a good range and sensitivity to small targets... which is already a problem with VLF detectors in such conditions. ..

I just spotted this on the new Garrett Direct website: The Axiom is updateable via the same process that is used by the Garrett Apex. The current firmware version is displayed for a split second when you first turn on the Axiom. The top ground balance number will show 01 and the bottom one 47. A blank position in the bar across the top in the final .2 part. The graphic below shows what I see when I turn my Axiom on. It is so fast you might have to do it repeatedly to take in all the info. If you so much as blink you will miss it. And just so nobody asks, I'm not involved in or testing any updates so can offer no clues as to what is in the works.

Question for you experts in manual GB on the D2. Let's say your machine picks "80" after doing the GB procedure. Does anyone see an advantage being a couple of points higher or lower in ground balance from what the machine picks? Thanks.

I don't think there is any difference between a VLF & PI detector, but on a VLF, Ground Balance numbers do not indicate the level of mineralization. It indicates the general type & conductivity of the ground. With that said, your idea may be valid, the same as using GB #s to trace Black Sand deposits. But this has more to do with Specific Gravity in an undisturbed setting. Rock piles would be much more random. The older analog VLFs that had an analog meter often had a Calibration point to differentiate between Mineral vs Metallic. This feature was used to sample ore to determine it's potential content. You would think modern digital machine could/would offer this same feature for ore sampling.

I probably won't use the F19 for gold, although upon firing it up and trying it out with the Nel Snake I must say the 19kHz Fishers have always been pretty impressive and it's easy to forget after having the Bugs in the cupboard for a few years, detectors like the GB2 and Equinox 800 will hit smaller gold, but how small is too small? For me I love finding the tiny stuff for the challenge of it all, it virtually has no value so it's not something everyone would waste their time doing, I'm never bothered about that, none of my gold has value as it's never getting sold. They like our milder NZ soil too, and get pretty good depth on nuggets, Justin at the gold shop in Arrowtown talked highly of his time using Gold Bug's right from the first one and the masses of gold he found with them. We have the advantage here of not having to worry about ground balance, the Bug hits the ground running and just works so losing performance due to the ground isn't such an issue. The key to the 19kHz detectors from FT and small gold performance is the threshold, it has a sweet spot, too high and you lose performance, too low and you lose performance, you have to get it just right, you quickly learn with air testing the just right position so it's not a challenge to work it out, but it's a necessity to get it right for best results. Something we will never know is if gold we found with one model detector would have been found with another, I think I'd do alright with the F19 on gold and doubt I'd miss much that I'd find with the Nox or GM1000.