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Jin

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Jin last won the day on August 30 2018

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About Jin

  • Rank
    Silver Contributor

Profile Information

  • Gender
    Male
  • Location:
    Gippsland, Australia
  • Interests:
    Prospecting, Fishing, 4x4
  • Gear Used:
    Gpz 7000,
    Equinox 800

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  1. These ones are half the price and go just as deep
  2. Here are the next few lines from the above sentence. "Quote: The feedback resisters set the gain of the input stage and while lowering the value of these parts does make for a quieter detector, which in some cases can be an advantage in very hot ground, there is an amplification loss of available signal in quieter ground"
  3. Yes, that would be a good next step having someone else manufacture the QED. Would allow much more of his time to go towards R&D.
  4. Think he would have to get past doing everything himself first. Might not be able to keep up with demand
  5. If i were buying another 4500 it would be the older version not the re release. I cant guarantee the following information is correct but its information i read in an Australian gold gem and treasure magazine a couple of years back "Quote: "After some time removing the white paint, that the feedback resisters located on the dual AD797 input opamps (voltage amplifying devices) were a lower value than on the original GPX 4500 models". (the board inside the GPX's are painted white - to cover up what components are used - presumably) His feeling was that the lower capacity resisters (also on the 5000) made for a quieter detector but resulted in loss of depth on some targets. Testing showed that the newer 4500 lost about 15% depth on big, deep target responses compared to the original 4500 He then replaced the resisters on the new release 4500 with the same ones used in the original 4500. The result being that the new 4500 now detected targets at depth the same as 2 other older 4500"s he had. Maybe thats why some people say the old 4500's punched deeper than the newer ones or the 5000's Source: Australian Gold Gem & Treasure - August 2017
  6. 1) What detectors you have purchased in the past couple of years? gpx 4500 Whites Goldmaster V-Sat gpz 7000 Equinox 800 2) Where you happy with your purchase(s)? The Minelabs - yes. The Whites - No (couldn't get my head around how to use it properly in mineralised ground) 3) Have you had to do a warranty claim on it, how'd that go? Yes, broken handle on 4500. Replaced in store (the store then sent the broken one back to Minelab) Also fried the amp in the gpx battery. My fault (I told them exactly what i did) and yet Minelab fixed it and didn't charge me. Hows that for service? 10/10 4) If you had your time again would you still buy those detectors or do you regret it? Would buy all Minelabs again. Glad I started with the 4500 even though my wife told me to buy the best detector at the time (gpz 7000) Wasn't sure if id like detecting so bought the 4500 when it was re released because it was cheaper. The Whites I bought because i wanted to know what it was like detecting back in the olden days. Soon realised i needed a detector fool proof so sold it later on without really understanding how the thing worked. (But i made a profit on that one so cant complain) 5) Do you still use any of your other detectors, if so why? The 7000 is my main go to detector. The 4500 has been sold. I sometimes use the Equinox but only when we go caravaning near the beach. I should drive 5 minutes down the road and detect an old cob and co stop over place, who knows there might even be a few gold sovereigns laying in the ground. Would like to try it in a few creeks that the 4500 couldn't handle with a waterproof coil because particular rocks kept giving of signals. Have tried it on similar rocks and the 800 handles them well 6) Your favourite detector of all time Without a doubt the 4500. Knew how to use it well, and got good results. Paid for itself many times over. Where as ive barely covered the cost of the covers on my 7000, lol.
  7. Not sure if im doing things right but im just using auto ground balance now instead of semi auto with the x-coils. Couldn't achieve a proper ferrite balance and was finding i was getting too many phantom targets. After running auto for a day things seemed to be much better. I was detecting very small targets quite deep with the 10" so i presume auto ground balance works ok. My only concern with ferrite balancing with the Gpz14 and then switching back to the x-coil was that after half an hour or so when the 7000"s electronics get to operating temperature (if the weather is coldish) the ferrite balance is going to be out again.
  8. Just a thought on the fried motherboard topic. Has anyone had a look to see if they can be repaired?? A few guys out there do mods on detectors, possibly they could repair the blown components.
  9. Managed to christen the 10" coil with a few nice bits. Was detecting for almost 4 days and found nothing until one hour before having to leave to go home👎 I went to an area my mate found 4 bits a few years ago with his zed. Id been back with my 4500 and the zed but never found anymore. This time i had the 10" x-coil on and was running very conservative settings (sensitivity 3) and easily picked up a murmur in the threshold. At around 3 inches i got a 0.10 gram bit. The past few days id been testing how deep i could get a 0.06 gram piece of gold with the 10" and found some settings that were still usable in the surrounding ground but punched deeper than factory settings or those that id been using. So after finding the first bit i went over the same ground again using these more aggressive settings and soon heard a nice clear signal that was repeatable. Digging quite deep out popped a nice 1.53 gram piece of gold. The first two days i had been using semi auto and trying to balance the ferrite the best i could but got many signals that ended up as nothing. Im presuming these were x signals due to the fact the coil wasnt balancing out the ferrite properly. Anyway the rest of the time i decided to ditch the semi auto ground balance and went with auto. I felt things were better in auto and spent less time investigating phantom targets and more time digging those pain in the rear shotgun pellets. My overall impression is im happy with the 10" and found it awesome at getting into areas the 14" just dosnt fit. I weaved it in and around thick clumps of grass/weeds. I can see this coil as being my everyday go to coil due to the lightness and ease of use around thick bush. I did spend a lot of time with the 20" coil and haven't come to a proper conclusion whether i like it all that much yet. I need to do some more testing to come to a correct conclusion on that one. I did find that i had to lower the threshold a fair bit to make it manageable. But the ground was wet from showers every night which might of upset the larger coil. It picked up plenty of small deep targets so i know it works well but id like to see how it compares to the gpz19 (my mate has one). The coil didnt feel too heavy and i swung it over hills that i could barely walk on due to steepness and walked for around 10 km - 12 km that day looking for a patch. Like i said not really enough time on the zed and the 20" to form a correct opinion, more about what i found from a few days of using both coils. so far thumbs up for the little 10".
  10. Well back from a few days away detecting and thankfully the rain stayed away as well except for a few moments of drizzle.
  11. Looking at my x-coil cables it seems the cable is different than the original Minelab cable. The Minelab one is much more flexible. The x-coil is more rigid. I think because of this it would be a lot harder to make the curls smaller and closer together. The other thing i noticed was ripples on the inside of the cable curls which the Minelab cable doesn't have. Maybe the manufacturer put something over the cable (like heat shrink wrap) for some reason and this is the reason the cable is more rigid.
  12. The x-coils aren't water proof? Is that right? Was heading away for 4 days of nugget hunting in the caravan this week but it looks like it's going to rain??️ Any thoughts on whether the rain may cause any problems to these coils? I know i used to detect in the poring rain with the coiltek elites and the 11" and 18" were fine but my 14" used to false when pressed against the ground. This only ever happened when it rained and i think moisture was getting in where the cable entered the coil.. I was thinking maybe taping some plastic over where the cable inters the coil on the x-coils just to be safe. Any other time id just cancel and go the following week but this is the last opportunity according to my wife to go for sometime. (new puppy that will need toilet training etc) Im keen to try out the new x-coils and hit a spot that may soon be exempt from prospecting in a few months time.
  13. Thanks Northeast, Ill test this out on Monday and see if I notice any difference. Thanks everyone else for your comments/suggestions, there all very welcome and helpful.
  14. I often see others using a high sensitivity setting of 16 - 20 on the 7000. Is there really much of an advantage doing this? I used to think maxing out my 4500 gave me some kind of advantage over the poor suckers who ran factory presets or slightly higher, now im not so convinced. Today i tested out my new 10" and 20" X-coils and tried many different combinations of settings to see what would suite me best. I did most of my testing with the 20" coil on a 2 gram bit of gold. I dug a skinny trench 200mm (nearly 8 inches) in some reasonably hot ground and placed my 2 gram bit in the bottom. High yield/Difficult were the better settings. (Ferrite and ground balanced, Semi auto ground balance, Ground/audio smoothing off, volume 8 (using a booster), threshold 27, threshold pitch 63, volume limit 7) First i tried a high sensitivity and the target signal popped out nice and loud. Then I started detecting the surrounding area and felt there was so much other ground noises going on that the quieter signals may be masked. Eventually I found my sweet spot where the detector was quiet as a mouse and i had no problems hearing a slight change in the threshold no matter how small it was. This was at a sensitivity of only 3. I then went back over the 2 gram bit and it still gave a great response using sensitivity of 3 (although slightly less than when the sensitivity was a lot higher). When i started detecting and raising the sensitivity up around 6 -8 a lot more ground noise came in. Now im used to ground noise as i used to use my gpx in Normal timings most of the time. But after reading how the zed is a different beast and not to drive it to hard i decided to try less aggressive settings to see if less is infact more. Obviously im new to the zed and have much to learn so will continue trying different things until i get my head around things.
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