phrunt

yep, the 4 minute 40 second mark you have a screamer that just disappears with a small amount of soil movement. Once you're aware of it and just know to flatten out any soil it isn't an issue, but it sure goes from hero to zero with the smallest amount of dirt. You're training the little tacker well; he'll be going at it himself in no time and be hooked! He certainly has a keen eye for it, finds it in the scoop easily by eye.

I like reading the patents, although they go way over my head some of it can be translated to English. The hardest part for them seems to be proving their "invention" isn't a prior art and justifying the fact is in indeed new, they cover themselves often too for future detectors by saying things like although this method is used in PI detectors, it is possible we could adapt it in the future for VLF detectors or something along those lines, so if someone in the future adapts it for another purpose, they can fall back on their patent to prevent it being done. They've even got their patent for the GPX fine gold technique patented to cover things like walk through and detectors for kitchens to recover tableware dumped into the bin by mentioning they could adapt it for that in the patent application. They probably have no intetions of ever doing so, but don't want anyone else to be able to either. It's probably someone's job just to word these documents to give them the best protection of their patent possible to prevent future products by other manufacturers.

Still on the site, just not listed in the store. AT Gold Detector | Underwater Gold Metal Detector (garrett.com) I should dust off my AT Gold, haven't used it in ages.

I wonder if they gave up on development, but wanted return on what they'd already invested so are just producing it as it were, then they need not spend any further money on it.

When you dive deeper into the patents for the various detectors many are shared between models. The above are the 6000 patents, mostly all older patents except the top one on the list which was a 2019 submission, it relates to shielding in a coil and electronics related to that. The second one down is shared with the SDC 2300. The 3rd one is also shared with the SDC 2300. The 4th one is shared with the GPX 4500/5000 The 5th and last one hidden away at the bottom of the list, also dated quite old first submitted in 2016 is likely the secret sauce to the GPX 6000 over the SDC, a new signal processing technique. It's not shared with any other detector. US10969511B2 - Signal processing technique for a metal detector - Google Patents So, while it does appear the GPX 6000 is just a pumped up SDC with nothing overly new it does have some new technology in it that was good enough to patent, although Minelab would patent their lunch ladies home-made tomato sauce for their canteen pies. The new shielding technique I think is evident too, how good is the 6000 near power lines compared to the prior GPX series. So while Geosense seems nothing more than Auto sensitivity combined with Auto Ground tracking, the secret to the 6000 is not so much Geosense, but the new signal processing technique from the 2016 patent. It goes to show how long they work on detectors though, a 2016 patent being the secret sauce, and they likely worked on it for years before it was a final product for patenting becomes a detector released in 2021. It does make some of the smaller mistakes they make like twisting shafts seem rather crazy when years go into developing the electronics and a couple of days slapping together a shaft that should do the trick. While it shares a lot of DNA with the SDC, more so than the earlier GPX, it's not just an SDC upgrade using all existing technology.

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You lost me at new technology from Fisher. 😉

Detech Australia has it listed as a standard mono coil, they say the size is 11x6", standard mono coil so weird the original Detech get it all wrong. I'd trust the Aussies over the original Detech site that's got quite a few mistakes on it, plus Detech Australia would never get away with wrong advertising, illegal there for a start.Detech Elliptical Searchcoils | Detech Australia | Australia (detech-metaldetectorsaustralia.com.au) The only spirals are the Ultra sensing mono's and Ultimate DD's. I had the 15x8" of the standard mono coils and didn't like it at all, in fact I gave it away, rare for me to even get rid of metal detecting stuff at all, so to give away a coil..... You may have dodged a bullet, the Spirals are good though. The smaller mono might be better than my 15x8" was though.

Yep, the only recent patent on it was under his name. US11454736B2 - Metal detector - Google Patents But even the earlier patents used for the 6000 from 2013 were also under his name. This 2012 fast time constraint target detection patent was for the SDC, but it's also used on the GPX 6000 and was under Bruce Candy also. We can go right back to 2006 patents like this one used on the GPX 6000 also by Bruce. This 2016 patent used on the 6000 is also under Bruce. Basically, every single patent for technology in the 6000 is under the name Bruce Candy so I would say he had a lot to do with it, all older patents used also on other detectors except the first one which was is the only one not used in other detectors, so far, it's exclusive to the 6000.

This place repairs Whites still. Centreville Electronics.

Yes, it can't be too far off, you can tell its a big event for them, it even has its own website.

Probably a good move, it will be just as sensitive if not more so to smaller targets.

Yep, doesn't reach expected full charge, Common problem, nothing to worry about and it can be a miniscule difference between full and not full and even full isn't really full, happens all the time with all sorts of stuff. Sometimes if you unplug it, plug it in and let it charge a bit more, it might make it, or do that a few times, either way, doesn't make a difference other than its better for your battery to not be full so just unplug it and use it. I think the people that make some products resolve this problem in firmware, some even make firmware updates to "fix" this problem, when really, they're not fixing it, they're just hiding that it happens. I've got new headphones from another detector manufacturer that have never once finished charging since new, they flash forever yet they still work the expected amount of time. If they see enough complaints about it, they may do a firmware update to hide it happens. If it should be charged, just start using it, don't try to unplug and plug it in and force that extra bit into it, it may satisfy you but it's not great for your battery. An annoyance but unless you notice a run down in time it operates from what is expected, I wouldn't worry. Some interesting reading. Even when your battery is at 100 percent, there’s still room for some more charge True There is more juice in your smartphone battery than the percentage displayed suggests, but if you used that juice you’d end up dramatically reducing the overall lifespan of the battery. At the crux of this problem is a delicate trade-off played by manufacturers. Increasing the available charge within a battery reduces the number of times that battery can be charged and discharged without being damaged internally. To make batteries last for hundreds or thousands of charge cycles, manufacturers place limits on the amount of juice that batteries can discharge. To understand why, you need to know a little about how batteries work. The guts of most lithium-ion batteries, like the ones in smartphones, laptops, and electric cars, are made of two layers: one made of lithium cobalt oxide and the other of graphite. Energy is released when lithium ions move from the graphite layer to the lithium cobalt oxide layer. When you charge up a battery, you’re simply shifting those lithium ions back the other way—out of the lithium cobalt oxide layer and back to the graphite. This is where we get to the problem with battery life and charge cycles. Shift too many of those lithium ions out of the lithium cobalt oxide layer, and the whole structure of the layer messes up. “The atomic structure of the material actually falls apart if you remove all that lithium,” says Kent Griffith, an assistant professor specializing in energy storage at the UC San Diego. So while it is possible to charge a battery beyond 100 per cent, the only way to do that is to pull out more of those crucial lithium ions. “It’d be like pulling all of the supports out of the floor of a building,” Griffith says. You could get the lithium ions out, but good luck putting them back once you’ve messed up that internal structure. That’s why manufacturers set limits on the amount of charge in their batteries. Most of the time, they’re set so only around half of the lithium in the lithium cobalt oxide layer is removed during one full charge. “Your battery could give you more charge if you went beyond removing half of the lithium, but you wouldn’t be able to do that very many times.”

yes, they locked down their Bluetooth LE to only work with their headphones. 😞 Bluetooth transmitters are the way to go anyway, so in a way the Algoforce is good, why pay the big bucks for a transmitter incorporated into a detector when it rapidly becomes outdated in the fast evolving area of Bluetooth and Wireless technology, stick a cheap transmitter on with the latest technology and use whatever new headphones product you want. Sometimes less is more, with the Algo I can have the latest and greatest wireless audio without having to pay big money for it on the original purchase, and can upgrade it whenever a new better version comes out. So many people are already doing this with their Manticore to use headphones they want to use.

I believe a buzzword for auto sensitivity combined with auto ground tracking, so nothing really, Gold Monster DNA, we saw it there first 🙂, well... the CTX has it too, but first in a gold machine. Not the only feature I think likely borrowed from the CTX.

The only new patent, well newish was a 2019 patent for the GPX 6000, the others are resubmitted older patents, their original dates listed above in the field. This is the newish 2019 patent used for the 6000. Although it's for a coils screening from what I can see with my limited understanding so the 6000 isn't using anything new that required a patent for the actual detector from what I can see. There are 5 individual original patents, many from very early years and resubmitted/amended so it's showing as 8. Interestingly Geosense never made it onto their "key technologies" when even their Pro-Find pin pointers anti interference technology did..... and surely, they're embarrassed by that pinpointer.

It weighs next to nothing on the GPZ, I can't remember the weight, something like 800 grams, it's on their website, but I'm probably not the best person to ask as my soils are mild, but for me the 8" is as good if not better than the 6000. I did some air test videos showing its differences to the GPX 6000 on Youtube, and in those it's performance was very clear but I can run the GPZ in normal. We have hot rocks here but no doubt they're different to yours, I find the 6000 worse for them than the GPZ with the 8". In saying all of that, do you need one? with a 6000 and 10x5" probably not. The ideal candidate for a smaller GPZ coil like the 8" or 10" is someone that doesn't want to have to buy a 6000 to get the small gold performance of a 6000, significantly cheaper to buy a coil and get an adapter made than buy a 6000. I just wish Minelab would give in, disable the chip and let the aftermarket coil manufacturers go for gold on the 7000. If you wanted more depth, with near GPX 6000 sensitivity/depth to very small gold the 15" Concentric coil is probably a better choice, it gives near 6000 performance on small gold with superior GPZ style depth on bigger stuff. I don't like recommending coils for people though, as my soil conditions being mild maybe very different to someone elses, I just know what works best for me, best thing to do is ask around, far more 15" CC users than 8" users though, most don't care enough about finding the tiny bits to justify an 8" when the 15" is close but deeper on all else.

Thanks, I'd never seen that before, and it talks about the Fine Gold/Enhanced timing being used on the SDC, a bit of a giveaway why it's not been overly good in milder soils. By the sound of it, the SDC could have quite easily been combined with a GPX 5000 to become another model detector......

Yea, they came up with a new method of detecting fast time constraint targets, which they mean small or specimen type gold, so it must do it very different to the GPX 6000. I would assume the method the GPX 6000 is using is all patented up so they had to come up with something different.

They're certainly not going to be one hit wonders, they entered the market with the Algoforce, I really can't wait to see what's next but they're already getting into gear and thinking about the next model. Until they catch up with demand, I can't imagine they'll get much done with a new model though, and I expect it will be a year or two away yet at least.

It does look a whole lot of fun. It's the claims side of it that make it such a pain, our public areas only allow sluicing and you need a claim to get a dredge into the water. I'd love to take it up. That Facebook group is fairly active with lots of good posts for someone interested in Dredging.

yep, same copy and paste mistake they did on this 11" coil. I can assure you that spiral windings won't fit in that coil size.

Looks like it would fit an Ace bolt and washer set. A couple of examples. These can be picked up real cheap.

Dredging is still quite popular in NZ with those lucky enough to have claims, they do very well too, far better than us swinging beeping sticks do. A small community of a couple of hundred of them are on a Facebook private group, and share and discuss their dredging and equipment. This is one being used in my neck of the woods. I wouldn't mind taking it up one day, it suits me as I hate heat, so being in water cooling off sounds ideal and they find plenty of gold.

Sorry, 100% sure it is not spiral wound.