This is a topic relevant to every(?) form of detecting -- ground coverage. I'll list several questions concerns I've had but any replies of course aren't limited to these, nor do they need to address any of them. Just tossing out some ideas to prompt further discussion.
1) What methods and efforts do you apply to ensure full ground coverage in the cases where that is one of your goals?
2) Is your sweep a straight line path or an arc?
3) How long is your sweep?
4) How much do you overlap consecutive sweeps in the direction you walk?
5) How much do you overlap side-to-side swings when following parallel paths (e.g. when walking two side-by-side swaths in the same direction how much does the left end of one path overlap the right end of the next path or vice-versa)?
6) Have you ever measured your coverage? How well do detectors with GPS (e.g. Minelab GPZ-7000 and Minelab CTX-3030) monitor ground coverage to this detail? Have you used other devices to measure ground coverage. E.g. I can imagine a drone with camera could provide useful data. Are there smartphones app that would help quantify coverage?
By Ridge Runner
I like watching the show How It’s Made and when I turned the TV on today it was about making detectors. They were at Garrett factory and started out showing how their coils were made plus how each was tested. Then they went through the whole assembly to complete a working metal detector.
I’ve seen something like this before but I believe it was somewhat different than the previous one.
It was just good to see something American made.
If this question has been addressed elsewhere, I apologize in advance and hope someone can give me a link for it. I have noticed that other companies besides Minelab are coming out with PI detectors for less than $3K. How do these detectors compare to the best Minelab detectors for Gold and also relic hunting?
On the Anfibio Multi (and I think Kruzer & others) there is a definite step in sensitivity between 39&40 Gain and again between 69&70 Gain. Is this a change in the Internal Threshold? In a way this would be the inverse of the way the F75 adjusts sensitivity according to Mike Hillis. Regardless, it is a very good set up in difficult sites. Most NM users know about the difference in response speed between 89 & 90 Gain on 3DI. This is different. I had read about these steps in a forum post that quoted Alper of NM. I can't seem to find that post now that I want to re read it.
I did some quick calculations the other day and to my surprise, realised that I have spent over $15,000 buying your awesome metal detectors. I don’t have a problem with that because I hunt the beach and water during the summer and hit the gold fields during the winter. My issue is with the current line up of gold detectors, specifically the pulse induction units which range in price from about $6000 to $10000 dollars. I know you plough a good deal of money into R&D but I feel a lot of your loyal purchasers are being neglected. I remember the days when the SD2100v1 and SD2200v2 detectors were available at a reasonable price as well as the reintroduction of the GPX4500 ( but I suspect as a reaction to perceived competition). These units were available alongside your official top of the line detectors so that Mr Average could afford a high performance detector. What has happened to your ability to still offer affordable pulse machines and not have to remortgage the family home?
Mr Minelab......or is it Mr Codan.......your business model is sure keeping your stockholders happy but it is a far cry from how things used to be. Current new PI units are out of the reach of many users who have supported your company for over 25 years.
I could go out tomorrow and buy a new GPX6000 but the reason that I won’t is twofold......my old 2100 and 3500 running both small and large monos perform very well for me AND I don’t want to further encourage Minelabs perception that “if we build it (and sell it for a premium price) they will come”.
I fully applaud the GPX6000 platform based upon initial feedback from owners but COME ON..........stop making it an exclusive club !