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So, I have an area in the Colorado Rockies that I am trying to successfully detect with the GMT 24K. The main issue here is tons of magnetite and I mean tons. Imagine a regular sized plastic sandwich bag with a 2" thick sandwich sized amount of dirt inside it instead of a sandwich. I brought a couple of bags full of dirt like this home from an area that appears to be a drainage ditch that was at the end of a sluice run in a hydraulicked area. I got almost 1 cup full of varying from speck to marble sized magnetite by panning out that bag of dirt, so about 1/3 of the dirt was magnetite. So far, I have detected this long trench with a GMT 24k and an XP ORX with 9"HF coil. The 24K shows 8 segments of mineralization and a phase reading of 85 in Ground Scan mode. The ORX ground balances at 88 with the mineralization bar full. The GMT 24k overloads at sensitivity 4, VSAT maximum in VCO audio and no iron cancel. The ORX does not overload but I have to constantly ground balance, with sensitivy on 70, reactivity on 2.5 and Disc IAR 2, frequency 50. Getting any kind of zip zip signal in this sea of double beep boings is proving difficult. As I said, I brought some dirt home to test. I figured with all of the advanced settings on the GMT 24K I should be able to find something that works. I took one of the bags outside and laid it flat on a plastic 24"x12" Igloo cooler. With the 24K, 6.5" concentric or 10X5" DD coils in VCO Zip audio mode, sensitivity 3, VSAT maximum, threshold 2, XGB auto, I got various amounts of ground noise and plenty of medium to loud double beep boings while bobbing the coil or swinging over the bag. Just what I expected. If I ground balanced and locked XGB when pumping the coil it almost silenced the magnetite and I could swing over the bag with much quieter, little responses but still clearly magnetite boings. If I then pressed the Iron Cancel button (iron cancel discrimination was set on the numeral 2 not 2 bars so no bars were showing) the magnetite was virtually silent. I switched to beep audio and still virtually silent with just a faint threshold response, meaning that instead of a high tone or low tone there was a faint, medium tone, 2 way threshold target tone apart from the reference threshold, I guess. I took a .2 gram flat nugget and placed it under the corner of the bag of dirt and reset the settings to what I started with, VCO zip tone, XGB auto, no Iron Cancel and carefully ground scanned over the area of the bag that the nugget was not under to let the XGB system reset. Sweeping the nugget a few times I got mostly boing magnetite signals with a very faint hard to distinguish zip sound. I pressed Iron Cancel (still set on number 2, also tried 1 with the same result, no disc bars showing) and got virtually nothing, with no zip zip responses of any kind. I locked the quietest XGB setting, with the lock button, no Iron Cancel and VCO audio. I got a nice zip zip with a little magnetite boing. I pressed Iron Cancel and literally got no signal of any kind, complete silence during sweeps. I thought WTH, and pressed the beep mode button for high and low tone pitch audio. I did not get a high tone or a low tone but I did get a very clear 2 way medium tone threshold response with a very quiet background except for the actual threshold tone.............? I removed the nugget and swept over the bag again with the same settings and got only a very faint medium pitched threshold?? tone occasional response. So, hunting this area in VCO audio, XGB locked, Iron Cancel off, sens. on 3, VSAT maxed, might work but I would be digging a lot of magnetite. Hunting in Beep mode with Iron Cancel On and listening for that medium whatever it is tone might work too.......? There is no mention of this medium toned, what I am calling threshold tone response in the manual anywhere. I used to hear something like this on my MX5 using multi tone modes with the threshold set on low when I encountered a target that was just past the range of normal detection audio or numerical target ID detection. The MX5 let me know something was there. I am not sure what this tone is called or if it is the same thing that is happening on the 24K. Personally I like it if I can depend on it........... Any comments would be greatly appreciated. By the way, I ran the ORX and Equinox over the same target scenario. The ORX in Gold 1 with a little tweaking could hit the nugget but only with sensitivity turned way down (60 -70) in order to quiet the magnetite responses down enough to hear the target. Frequency 50 kHz, GB 88, Sensitivity 60 to 70, Reactivity 2.5 Disc IAR 1 or 2, Iron Volume off, Threshold 4, tons of ground balancing required just to hear a clear zip, zip. The Equinox 800, 6" coil Gold 1 multi, -9 rejected, GB 1, sensitivity 15, threshold 10, recovery speed 4 to 6, FE 0, had no problem giving a beautiful zip, zip on the .2 gram nugget with minimal ground noise............Hum! Jeff

I noticed today emi was not affecting the GMX w/ 6" concentric coil at all. The Gold Kruzer and XP Orx were going crazy. I had to turn the sensitivity way down on the Gold Kruzer. Different frequency helped the Orx. The GMX sensitivity was max at 10 with no noise. Wish it weighed 2 lbs but it is the way it is. Becoming my favorite water hunter. Taking it in the water tomorrow. 6x10 coil is on the way.

How well does the 6x10 coil float in the water? Like a cork? I'm using the GMX lake hunting and want the 6x10 coil for coverage but if it floats to much I won't get it.

Greetings to All. I know the GMX is waterproof, but I am trying to tell if the GM24k and GMX Sport are otherwise the same machines. I'm not very tech savvy (but working on it), so if anyone can enlighten this poor soul, I would be very grateful.

I got the Advance Nugget Shooting with the Goldmaster 24k book by Jim McCulloch. He shipped it really quickly. I had already read the manual, but Jim has a very easy to understand way of writing from years of experience. He did a great job of weaving the features of the GM24K and the new GMX into his previous books about Advanced Nugget Shooting. Some of my questions have already been answered with just a quick skimming of the book. I look forward to thoroughly reading it soon. It is well worth the already discounted price. Thanks Jim..... Jeff

I like the GMX/24k. I got the White's GMX which is a waterproof 24k for lake hunting for jewelry. I've only tested it outside so far using the 6" concentric coil which is 6.5". This detector is completely silent even with sensitivity max. No chatter at all. The iron disc is completely adjustable 1 point at time. At 19 it disc's out a nail one way and gets a hit the other way. I wanted the disc set as low as I could. The vco mode is the deepest and most sensitive mode. Even with disc at 19 I can get a hit on the white gold earring laying on the ground. It does have to be close, approx. 1/4" or less to the coil, but it hits it both ways. I buried a 0.89 gram 10k gold ring at 9" and it got a nice hit all around. Also hits my 10" test dime. I sold the 4x6 coil. The 6.5 concentric was all I wanted. Might get the 6x10 sometime. It is in the XP Sport housing. Even though it weights 4 lbs it feels ok with the small coil. I wish White's had spent some time designing it light weight but it is still comfortable enough to use. I like the display. I like the balance of GMX better than the Gold Kruzer. I hip mount the Gold Kruzer in the water because the balance of it hurts my forearm in a short time. Could probably get used to it though. I like the display on the GMX. At the top there is a bar that shows where the target is from iron thru silver range which is convenient. It is going to be a great lake hunter. Now it's making me think about getting another MX Sport. White's has nice products.

Hey Team, First post, long time lurker. I am right on the brink of buying my next detector. I previously had a GMT w/nugget coil shooter 4x6", which I had dialed in very well, and it detected small good very well. Where I am from everyone uses a GB2, and has good success - they are however hard to find in Canada, and I am leaning towards the 24K/GMX. I like the fact the GMX is waterproof, and I can use it for underwater sniping, as well as never worry about weather and or moisture. It comes with the 6.5" concentric coil, which I have never used, but in my understanding would make it even MORE sensitive then the 4x6" DD coil solution (at the cost of mobility). Do you guys think the new 24K/GMX w/ 6.5" concentric would be a better overall unit for small placer gold then the tried and true Gold Bug 2 w/6.5" coil? I don't want to do this twice is possible. The ground I am in is in the East Kootenays of BC, and is not too hot, but does contain some "spicy" rocks and very jagged bedrock as a platform. Most of the gold I need to detect will need "depth" as utmost importance. It has been picked over very well in the past, and I really need something that will shoot a little better then a hot GB2. The GMX platform comes currently w/ the 6.5" concentric, and the 4x6 new DD coil for $1140 CAD all in. Would the Gold Kruzer perform equally to the GMX/24K platform? It is about $300.00 cheaper for the entire 2 coil waterproof package. Anyways please try to confirm my belief beyond Steve's signature which says he kept the 24K and got rid of the other VLF's lol. Also Aureus's review of his 24K had me sold when he said he was turning old ground into "new" ground. Cheers! 🙂

White’s new 8″ x 14″ DD Coil for the Goldmaster 24K and GMX Sport is now showing up at some dealers for $249.95 (internet price $229.95), part number 624-0614. Scuff cover /skip plate sold separately, part 501-4101, $9.95. Great for ground coverage, but for those with a GMX Sport do note this coil will float like a cork. 8" x 14" DD search coil for White's Goldmaster 24K and Sport GMX The Goldmaster 24K and GMX Sport now have a decent coil selection going. In addition to the coil above, we have: 6" x 10" DD coil (stock on 24k) 6" round concentric (stock on GMX) 4" x 6" DD coil Here is my Goldmaster 24K with a prototype (no label) 8" x 14" coil.... White's Goldmaster 24K with 8" x 14" DD coil

So Jim is the coil out for sale now to the public ?????? Mike C...

We now have four coils for the White's Goldmaster 24K and GMX Sport. The two models have coils with different labels, but they are all compatible between the two models. White's GMT and MX Sport coils ARE NOT compatible with the GMT 24K or GMX Sport. There are: 8" x 14" DD 6" x 10" DD 6" (actually closer to 6.5") round concentric 4" x 6" DD This is not perfect but it gives you a pretty good look at the relative size of these coils. Click for larger version. Search coils for White's Goldmaster 24K and GMX Sport metal detectors

I recently purchased the Goldmaster 24k. In preparation for my first outing I made a test bed of different materials in my back yard. I also printed of the Conductive Order of Metals which was set up based on the Whites Spectrum XLT. So my test bed consisted of a nail, pulltab, penny, nickle, dime, quarter, gold ring. After setting up my detector based on Whites quick start guide I did my testing. Here are the visual target id results. I wanted to compare them to the Conductive Order of Metals GMT 24k reading. nail 39 pulltab 91 penny 95 nickle 89 dime 97. quarter 98 gold wedding ring 94 Conductive Order of Metals nail 0 pulltab 35 penny 56 nickle 28 dime 70 quarter 82 gold wedding ring 40 As you can not even close. So am I wrong in thinking the GMT 24k should follow the Conductive Order of Metals listing? Is there some other listing I should be looking at or is there no corelation at all? Thanks for any help.

Images in thread sourced from FFC public reports at https://fccid.io/KHS800-0353

The owner's guide for the new Goldmaster GMX Sport is available for download here. White's Goldmaster GMX Sport waterproof metal detector White's Goldmaster GMX Sport Specifications

If you want to see "sneak previews" of White's new waterproof high-frequency VLF gold detector, the GMX, as well as the long-awaited (but worth it) 4x6 coil for the Goldmaster 24K (and GMX), AND some paltry CA AU, check out Rob Johnson's YouTube channel "Spud Diggers" for the just-released video entitled "We found some gold in California! Also, a sneak peak at the new White's GMX Gold metal detector." HH Jim White's GMX Sport Data & Specifications

Click for larger versions.... White's Goldmaster GMX Sport metal detector Introducing GOLDMASTER GMX SPORT Waterproof to 10 feet Finds sub-grain nuggets XGB ground balance Frequency Shift VCO & tone ID audio Multiple coil options 40 hour battery life (8 AA) Large, backlit LCD Iron discrimination Pinpoint mode Made in USA Introductory Offer FREE 4" x 6" DD Shooter Coil - offer ends May 31, 2020 White's GMX Sport Data & Specifications

The new White's Electronics GMX Sport is now available for pre-order. It is the extremely popular Goldmaster 24k fitted into the waterproof MX Sport housing. Introductory offer for the GMX Sport includes TWO searchcoils, the round 6.5" concentric, and the 4 x 6 Double D oval, plus Whites waterproof headphones, plus adapter for standard headphones. MSRP is $899.95. I am already accepting pre-orders NOW, and will have them at the upcoming GPAA Gold Shows. Check out the YouTube video "GMX Sport intro”.....

Hi everyone, I'm new to metal detecting and I just ordered a Whites 24k. My question is does the IP54 rating mean I can detect in the rain without worry? I've seen the technical definition but wanted to know what that means in practice using the detector in the field? Thanks for this forum, I have learned a heck of a lot. I found a little gold in an old hydraulic pit with hand tools and I'm hoping the 24k will help me cherry pick and save my back!

Jim, I'm curious how they know it is 54% more power to the coils of the 24K. It almost seems like 54% would just as easily be 55% or 50%, but for some reason it is stated and known at 54%? If the new 24K is getting 54% more power to the coil, what would you say the average depth increase would be on typical rice size gold in average North Nevada soil. I realize there is no exact answer as there are many variables, but boy they sure were exact letting us know it has "54%". Reason I am not asking for bigger Au nuggets, as I know the majority of gold found is smaller. Lunk and I have been doing very well with our 24K's, now we'll have to upgrade to the new 100% waterproof version to add another tool (detector) to the arsenal. Photos are some of my 24K finds. For those who don't know, this type of crystalline gold is easier to recover with a VLF detector vs a more expensive PI unit.

Spud Diggers Jan 1st - "It's always a good day when everyone finds gold! We had a lot of fun metal detecting for gold in California. We found some nice relics and gold. We were using the White's GMT, 24k and the New GMX."

Still no word nor listing on the whites website for the new 24K mini DD coil.... anyone heard anything????

Entitled "Gold N Ghosts". His first video shows him recovering Aussie gold with his Goldmaster 24k at a "worked out" site. Worth watching! HH Jim

Victoria Australia nuggetshooter "Aureous" has launched a YouTube gold prospecting channel called "Gold N Ghosts". His first video shows some of his successes with his Goldmaster 24K at "worked out" Australian sites. Worth watching! HH Jim

White's 24K is one of my favorite dedicated VLF gold detectors for finding gold. It is even better when you use it to find gold nuggets. It is unstoppable when used to find and return a 14K gold ring with natural Alaskan gold nuggets in it, weighing 1 ounce. The owner was broken hearted and thought it was gone forever. Now he is all smiles and very appreciative. His exact comments are posted in the Finding Rings Forum of DP, but I wanted to give a little love to White's for making such a fine 24K detector.