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Detector Prospector Magazine

Detector Database



Everything posted by jasong

  1. Yes, so will your Equinox and GB2. In the place I went, I'd use the EQ800 personally for the VDI capability, but that's just me. My buddy does great with the GB2. Be careful though, some of these places aren't really the types you can just wander around and detect randomly. There is a reason a lot of people don't post to forums about it and keep it secretive. I had to do a ton of research just to find a few stray polygons of land, and I'm not talking about the kind of basic research most do to go out prospecting in NV or AZ. Some don't bother with that, and that's gonna get them shut down eventually IMO. These spots are too small to handle much attention and there is a lot of money and power around some of them who would prefer you not be there. The sheriff will ticket you for parking while poor at one spot if he sees your truck on the side of the road.
  2. Looks familiar! It is tough hunting, I dislocated my shoulder and tore my rotator cuff falling down what looked like a hydraulic cut there on my first day and had to leave. All I ever found were square nails with my 4500, I was digging them out of solid shale down 8 to 12 inches deep, no idea how they got there but decided the 4500 was pointless there. Went back two years later with a Fors Core (no backup), and it quit 2 hours into detecting and had to cancel the trip. Ran into another guy detecting there who I saw off in the distance on a big tailing pile, and which turned out to be my buddy and we had a laugh since it's kinda secretive and we both ended up there, and basically on the same hill and same tailing pile on the same day via two completely different paths of discovery. I'm scared to go back with the GPZ and try again, haven't been back for like 4 years out of sheer superstition.
  3. Might get in touch with me when you get down there. You helped me get started in jade prospecting a few years back when I was trying to learn what to look for by sending me a nice jade sample and that was a big help, I went from guessing to knowing exactly how to test and look for stuff with that sample. This summer the company I optioned my jade prospects to just exercised the option to buy me out, so that was all a success and I'm able to use that money to get back to the field full time prospecting again. I appreciate your help when I was starting out. Now, I have a new gold project in the vicinity of SNV, and another guy associated with the jade stuff might be out on that one too and might be someone to meet if you are still doing jade stuff in China. I'm unsure of what I can and cannot say at this point though due to non-disclosure clauses so I may not be able to take anyone out to the project until it's completed, but who knows, maybe there is a good connection to be made if so. Also, if you happen to be in Wyoming before then for travel or whatever, I can show you what will be one of the two first new commercial jade exploration projects in the lower 48 in probably 4 or 5 decades.
  4. Only 7 antennas? I got you, Minelab, already obsoleted the competition for you. I put antennas on the antenna. Beat that, know it all scientists! Also massive increased sensitivity to diamonds and meatloaf sandwiches by invoking the imagery of a half donkey/half falcon drawing shooting a plasma beam from it's beak. And only I offer the official flag of Burkina Faso on my products. Finally, in a market first, after 17 years of painstaking research I've finally perfected flame imagery on the handle.
  5. For mono vs mono in mild ground, the best scaling/comparison factor I've found is just by comparing total area of a coil. However, with higher degrees of ellipticity it may not scale as well, but every coil I've tested has more or less followed this rule of thumb. A 24x12 has an area of 226 square inches and a 14" round has an area of 154 square inches. So, IMO, the 24x12 will get more raw depth on stuff above ~1 gram or so generally, in mild ground. But with that much ellipticity, that may only hold true towards the center of the coil, I'm not sure since I've never tested one like that. The only place you'd see a 14" DD get more depth on larger stuff is in bad ground where you have dial down your settings to run the 24x12 mono. On a DD, your RX and TX lobes individually are the effective size of the coil, not the total coil size. Unless something has changed with newer DD designs, I haven't been following very closely. You just have to kinda try and see on your particular ground to know which solution is best if your ground is hot - either go with a DD or dial back your mono with Enhance or whatever you prefer.
  6. I haven't tried to balance on the ML one yet, but I will when I get some free time again to get away from town. The fact that the aftermarket ferrite is conductive is the concerning part to me. Because if a person tries to balance it in manual they will be changing both X and G and leaving it set wrong. At least that's the way I understand it. That, and the X itself may be not matching the X in the ML ferrite either.
  7. The Ace250 was the first real detector I bought and it's what really got me into detecting. I had a couple $5 garage sale 1970's machines before that and they were a bit frustrating to learn on and I didn't do much with them. But they got me into reading forums for a few years as a distraction from homework. In 2004, I believe it was the first year the Ace 250 came out, I finally decided to take the plunge and spend what seemed like a bankrupting amount to me at the time - $199. I literally spent months going back and forth on whether I should spend that much or not. I was paying my way through college as a dishwasher and doing lab TA'ing at the time. I bought it with the idea that I'd detect the campus grounds and pay the machine off quickly and have extra money to go to concerts and movies, one in a long line of get rich quick schemes I had at that age. What I didn't know was that the White's factory was literally right across I-5 (an interstate) from me and many times a week there were 2 guys (sometimes 3 or 4) associated with White's, sometimes testing machines, who would grid all the good spots regularly. So I'd try to wake up real early and haul ass through all the fields, detecting a million miles an hour, to try to beat them to it. That machine absolutely rocked for that purpose. It was so fast, easy and intuitive. And that fast technique kinda carried over to prospecting too in a way later on. I still got the 250, I take it out with me looking for old abandoned homesteads and ranches, it's beat to hell from bouncing around in the back of my truck and being abused for 15 years, and still runs great.
  8. I was going to post this in one of the X Coil threads, but it might be of interest to everyone. I bought a replacement ferrite ring since I left my ML ferrite in Arizona. It's one of the Doc's ferrites with the white backside (off Ebay), I did not realize they were not ML ferrites when I bought it. The OEM Minelab ferrites have a black backside. It would not balance on the X Coils at all and actually sounded like a screaming target (I didn't try the Z14) so I reported that to the coil manufacturer. He responded that the white backed aftermarket rings are not the same as the ML rings. So, as I normally do, I checked for myself, bought an authentic ML ring, and he was right. They are the same size, but the Doc's ring is 10 grams heavier (something I noticed immediately but did not have a ML ring to compare to until recently). It is also more magnetic. The Doc's ring is also conductive whereas the ML ring is non-conductive - the Doc's ring was reading about 38 ohms from side to side whereas the ML ring read infinity. And after I sanded the backs to get a fresh surface to check resistances on I noticed the ML ring looks dull and black as a ferrite should, but the Doc's ring looks shiny and metallic, like iron. So, clearly there are differences between the two rings. Thought people might like to know even if you are just using the stock coil, as I'm not sure how this affects the ground balance, but someone could be running suboptimally using this ring.
  9. One more update, after talking to the manufacturer it looks like all coils will now come with these plastic spikes/clamps on the cables.
  10. Not visible in my photo because my coil didn't come with them.
  11. Do you have one of the stock Minelab ferrites Jin? They are a bit black colored on the back. I bought a replacement that wasn't made by Minelab, with a white backing, and the manufacturer said it wouldn't balance on anything but the stock ferrite. Sure enough, it screamed on the white backed ferrite and wouldn't balance it. I haven't tried the Minelab ferrite yet. Andy might be gearing up for some night detecting, dunno. But, here is a picture of my replacement coil/cable inserting into the middle shaft, no problems. Next to it can be seen the old coil cable being re-wrapped onto a 5/16" (~8mm) spindle as the manufacturer suggested I keep the coil and rewrap it rather than send it back. The newer cord is slightly blacker but I'm not sure if that means it's a different material or if it's just because my old cord is discolored from leaving it in the sun to rewrap twice before (this time I used a heat gun). Also, the patch I made in the upper right. Apparantly I still need to wrap it with a lot of layers of tape for strength according to the manufacturer. I think a few layers of adhesive shrink tube should work too though, if that's what Steelphase is doing?
  12. Another odd move. Considering SDC's are $3730 in Australia, that means they are only $2534 USD if we bought from overseas. Not sure why they would raise the price even more here in USD, it should be going the opposite direction with currency exchange rates. Shouldn't it? Not to mention the margin between invoice and MSRP is huge, $50 would seem to make very little difference in that light.
  13. I received my replacement 12" X Coil this morning and I'm happy to report the cable inserts with no problems now, drops right into the shaft with no friction, same as the stock cable does. 👍 From what I understand, all the cables now are being wound into a tighter wrap like this, so that's good as it should eliminate the shaft binding. I have not had a chance to get out and use the coil yet though to see how it does.
  14. In total, the GPZ with the 10" X Coil is about equal to swinging around 2 large Coke's, a medium pizza, a soft shell taco, and a Big Mac which your buddy took a big bite out of when you weren't looking, accounting roughly for packaging weight. Also, roughy equal to a 7lb bag of feathers. The coil diameter is also equal to 30 barleycorns, or approximately 5/36ths of a fathom. And all that still somehow makes more sense to me than the pennyweight does.
  15. Good idea. Do you know how much less the CTX battery weighs than the stock battery?
  16. I don't have a CTX battery, but here were the weights of the coils I got (coils +cables, no shafts). Even though it's only a little over 250 grams lighter, the 10" (with the stock battery) feels like something I can swing without the bungee. The 12" feels like I'd still need a bungee for a full day, but if I forgot the bungee I could make it through a day by taking breaks. I guess I'd have to add the weight of the patch on too. Overall, not quite as much weight savings as I had thought initially, but it's enough to be noticeable. Weight (grams) Z14 Stock Coil 1240 X17 Spiral 1393 X12 Spiral 1133 X10 Bundle 988 250 grams = the approximate weight of a Big Mac, for easy visualization of what's being subtracted from the coil end of the detector.
  17. Might get your wish there Andy, the 17x12's are in testing, not sure if they are for sale or not yet though? We'll have to see how they go. That $3500 AUD repair is crazy... That's like $2500 USD. Some dealers were able to hook their friends up with entire GPZ's for around $4800 USD, I forgot the exact number, which I presume was their invoice cost or close to it. I'd be very surprised if that main board costs more than $200 to make, so they are turning a healthy profit on repairs too I guess.
  18. This would take 100's of people, it ain't happening. This would have 20 posts by now if enough people cared to move forward. It appears that almost the only people willing to do anything are the people who already have patch leads and thus nothing to gain! I have, however, shown rather effectively by accident why Minelab was right to stay out of the coil fray. So, feel free to thank me down at corporate, boys. I thought this was a solution that would help other people, from current customers to ML to dealers to coil manufacturers. I got no horse in that race anymore since I already made a patch lead that lets me run any coil. No use spending time on this if others don't care, moving on to more productive things!
  19. I think Bill left after ML moved their marketing HQ to Chicago. Not positive, but I remember him saying something like that when I was communicating with him too about various subjects. Unfortunately anyone I ever talked to at ML seems to be gone now so not sure who to contact, but I'll find out.
  20. Cool, cool. Stoicism doesn't land a nation on the moon though.
  21. Email would probably be the better option to start, just to be polite. That way they would definitely know what people think and wouldn't feel obligated to respond on the fly or take a thousand calls. First though, I'm just curious if there really are enough people out there to really drive the point home to ML. I have no idea how many GPZ's were sold so I have no reference frame. Also, most people I meet in the field with a GPZ are not on the forum so its hard to communicate with them and I suspect most don't even know there is another coil option out there now either. If it's really only 10 or 15 of the loudest among us, then I guess ML is probably quiet for a reason, because we aren't big enough to matter. But if it's a large percentage of the GPZ owners, they would have to listen. Was just kinda curious, I'm writing to them either way since I don't expect them to act off my forum posts alone. But wanted to see what others thought as I was gathering my thoughts.
  22. There are two patch alternatives that may be worth thinking about. Right now I'm sure Minelab wouldn't consider them, but if enough GPZ owners asked for it, well who knows, since there is obviously a demand for coils and we are paying customers after all... So, I'm just going to throw them out there. If the chip is software authenticated and not hardware authenticated in the control box, then we could ask Minelab to sell us a firmware patch that disables the chip authentication routine. It would be based on our unique GPZ serial # so that it could not be copied and used on any other machine so counterfeiting would not be any more possible than it is already. Further, ML could charge some reasonable fee for this patch, say $200, and that way they would make money off the aftermarket still even if they weren't selling licenses. It solves our need for coils without modifcations/patches, gives 3rd parties the ability to build and sell products we want, and it gives Minelab a new income stream. It seems like a win all around for everyone. Not to mention for dealers who would have a new hot product to sell when GPZ sales are petering off. If that for some reason were not doable then: Minelab sells a set number of ML chipped cables directly to the GPZ owner. Let's say 3 or 5 maximum based on a valid and registered GPZ serial #, and then no more. Again, it's not enough to allow a counterfeit market to thrive. And it solves everyone's problems. $100 a piece and the coil manufacturer could subtract that from the price of a coil since they are not making a cable themselves anymore (you would mail them the ML cable to install onto your new coils), and opening the market up to a lot more sales on top of that. Both could be done with some clause that says "warranty is no longer valid if you do this" if it would make ML feel better about what they think is a coil that doesn't meet their personal (and unstated, unpublished) standards. And that too would go with the unique GPZ serial # for tracking. And it doesn't matter for many people anyways since their warranties are already no longer valid. It'd be like unlocking or jailbreaking your cellphone. It kills me to suggest paying ML even more after we paid this much already for a detector that clearly (to me anyways) only appears to cost around $500 to manufacture. Especially since ML didn't come through on a promise making their own coil selection and I understand that argument completely. But there appears to be an impasse - and impasses require compromise, so if we're willing to give some, maybe Minelab would be willing to give a little too? If they are open to compromise then we can create a solution for everyone. If on the other hand, Minelab makes it clear they won't even accept a compromise...well then. I guess we know where they stand in that case, and where our sympathies should lay when they complain about counterfeiting or anything else we are subsidizing personally with the $10,700 price tag that many of us paid, and even still with the $8,000 MSRP. But it's time we know one way or another IMO. That's where I stand personally. I want to know. Maybe they have a better idea than mine that would work. Or maybe they give a tangible reason for people on the fence to wait for another product. But it's time for some communication. So, if there really are enough people interested in getting aftermarket coils - ones that would not require cutting or anything else, maybe we can give them a chance, bombard them with calls so they have to respond with something, and see what they say. I personally am getting kinda tired of guessing and wondering what ML thinks since they never say anything, I think it's time to poke the giant and make it give us a response one way or another so we can go from there. It's more than clear they aren't going to respond if someone doesn't make them... Companies are accountable to wallets, and people are commonly able to get much more massive, monolithic companies in the US to respond with enough people asking the same question. What do people think about this? Good idea? Bad idea? Don't care enough either way?
  23. Thanks Flak. I just have inordinate amounts of time to sit and think about these things, as all I do is work and prospect. Most others have something keeping them busy like...a real social life. ? I got no kids and my dog thinks I'm a bad conversationalist when the subject veers from treats and walks so I assault forum readers with walls of text hahaha
  24. Andy, hard to say exactly as I'm kinda spitballing here just for illustrative purposes since these things can be hard to explain with words only for me. These graphs arent actual data points, just my very rough approximation of what I generally find when testing the same nuggets on different coils. I cant photoshop on my phone or I'd make another graph, but my recollection was at the 1 grammer around 11 inches, the 17" out performed everything, and it outperformed the Z14 or equaled it more or less with all 5 nuggets I tested. Granted, a very small test of limited scope. My 0.07 gram bit, being spongy, crystalline, and presumably high in silver as it came from a pocket, didnt really hit very hot on any coils including the 10" so it's hard to say on the micro dinks how the 17" did, both it and the Z14 sounded off rubbing the coil, but neither could hit it at 1cm. As you have seen, a flatter, denser nugget of the same weight will scream at 1cm though, so take with a grain if salt. But the performance on a similar composition nugget of 0.18 grams at 4 inches, the 17" started to sound sharper to me and over a bit larger area so it hits stuff small enough that I will still pursue it at least and that's all I needed to know. I'd have to go rewatch my recordings as my memory is fading by now. But on the 5 grammer at 16 inches (also porous, with quartz, semi crystalline) the z14 was almost silent, i could suss out a signal if I knew it was there, while still a really strong target on the 17". I felt as if I could lift the coil 2 to 4 inches above and still get a diggable signal but it was impossible for me to measure exactly. The 17" spiral impressed me a lot with all around sensitivity and a good low end depth punch for 1 gram and bigger, and it was only about 150 grams heavier than the Z14. The 12" spiral impressed me as a slightly hotter, slightly lighter (100 grams, cant remember exactly) slightly smaller Z14 all around replacement coil. Still unsure how it does on salt with the spiral windings, thinking going to some alkali flats around here next weekend and comparing to the Z14. The spiral windings might offset the size decrease when it comes to salt, dunno. If I could only buy one, for general use, so far it would be the 12" spiral. But the 17x12 seems pretty compelling if that one gets offered for sale. For covering old patches (not in salt) or working old flogged goldfields, the 17" strikes me as the best for my particular purposes in those areas. I did a noise test using a sound meter and they were all more or less equal, within 1db, based on 2 minutes of average background noise. Which surprised me. The Z14 was the loudest, but not by much and I think it might have had the unfortunate luck of getting a lightning strike in its test. The 10" seemed to make a difference around power lines, but only if it was parallel to the ground, facing up all coils failed equally. I was surprised that overall the 17" wasnt observably louder than the others though when it comes to background EMI. (Apologies for errors and typing, on my phone at work)
  25. Was there a lot of old timer activity there, hard rock mines, or is this newer discoveries? Some of that gold looks pretty rough and near the source. I have to admit I don't know a lot about Virginia mining, mostly just hear about Dahlonega and maybe up into NC.
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