Depth testing with the 10" stock coil in this nasty anoka sand , that is full of magnetic black sand , I found that i lost clarity of signals when the sensitivity was to high for me the best setting was between the C in cancel and 12:00 oclock now no other detector i have owned could hit a dime at even 6" in this dirt and for the GT to get a diggable signal at 8" is really good I was operating in Disq Iron mask on http://www.youtube.com/watch?v=ZyM2YAVotdc
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Sovereign depth test In ground 6,7,8,9" dimes
- Thread starter GunnarMN
- Start date
Critterhunter
New member
Very cool. In my soil about 7 to 7.5" was the max depth any machine (including Explorers) would get on a silver dime. The GT has been the first machine to break the 8" barrier and regularly get coins 8 to 9.5" deep. So far I've dug my two deepest coins using the stock 10" coil...a V nickle at about 11" and an indian also about that deep. Both gave perfect IDs. Based on my results thus far I think the 12x10 is deeper but I have yet to dig any coins that deep with it. Now, I'm talking on land here. In the sand the GT seems to just about double it's depth.
Great testing and hope to see more from you.
Great testing and hope to see more from you.
Critterhunter
New member
By the way...I've often found that setting sensitvity at the "C" in noice cancel ends up being the best setting for best ID/audio at depth at many of my sites too, even though say 11PM or so was still stable. This was more true with the 15x12 and the stock 10" coil, but I'm finding the 12x10 to want to run at max stable sensitivity more often...yet there are still sites where it wants it much lower like the other coils. Only way to calibrate at a new site is to plant a dime at fringe depth, or find a deep target and play with sensitivity until the ID is the most stabile. Then dig it up and if the target should have read like it did (like say a pull tab or a wheat) then you know you've got it set right. If the ID never gets stable then chances are the item is oddly shaped and you should use something else to set it on.
One thing for sure...the higher you ride sensitivity the slower the coil should be worked...and I mean SLOW when riding the edge of stability. Stuff will start to null or blank out if you move too fast. But with a lower than max stable sensitivity setting I find the machine wants a somewhat faster sweep speed for best response at depth. I play with that speed on a buried dime or on a found target until I see what is what for that site. Also, the fast "wiggle" over a deep target for best response sometimes becomes a slow short back and fourth sweep. I test that too as it varies from site to site. That's important to master to draw the best ID out of a target at depth. A coin might only sound like trash until you do the wiggle/fast or slow/sweep over it constantly.
One thing for sure...the higher you ride sensitivity the slower the coil should be worked...and I mean SLOW when riding the edge of stability. Stuff will start to null or blank out if you move too fast. But with a lower than max stable sensitivity setting I find the machine wants a somewhat faster sweep speed for best response at depth. I play with that speed on a buried dime or on a found target until I see what is what for that site. Also, the fast "wiggle" over a deep target for best response sometimes becomes a slow short back and fourth sweep. I test that too as it varies from site to site. That's important to master to draw the best ID out of a target at depth. A coin might only sound like trash until you do the wiggle/fast or slow/sweep over it constantly.
Critter you really have badd ground if 7.5" was as deep as you could get , man and yew it seems you have to swing slower with more sensitivity, God willing my nest test will be in all metal this soveriegn kicks in all metal let me tel you 9" dime in bad ground no problemo and its smoooooooth, again the reason i use a dime is if you can hit a dime at 8" you will hit other coins deeper so its kinda standard best finds to you , Gunnar
Gunnar,your sweep speed is too fast.The Sovereign gets a lot of extra depth from the wiggle to lock on targets.The wiggle is easier to learn with a meter.Later Ron
bootyhoundpa
Well-known member
very informative video..... you just showed what ive been trying to put into words..... too much sensetivity is counter productive....if you can leave those coins burried there i beleive you will find your test results will change from time to time depending on moisture content in the ground....its a great way to tuneup prior to hunting.... also what critter said was shown in your video.... when the sensetivity got turned up it took a slower swing to get the best signal....when in the feild you will want to try the wiggle method--- when you get a signal shorten up your swing length as much as possible .... this will reduce the chance of interference or a null from trash or iron in the immediate target area......nice vid...
Good ilustrative video to demonstrate your point although i'm sure the sov would have picked them all up with much shorter swings directly over the target once you know something is there, a short wiggle directly over the target the sov homes in but once you come off the target it will lose it and have to start its homing in once again. Many times i've had that initial null and been able to work it up to a good signal if the target doesn't get outside of the coil radius, once you come off it completely the next pass is the null again and the process starts over.
It also demonstrated the deep good target that is at extreme range for the settings and gives a null for all its not iron. hence the reason i always work a null a couple of times just to make sure it is iron as the short pass will also work up to full null, although you may get a squeak comming off the target though that should disapear if you change direction if its deep large iron.
It also demonstrated the deep good target that is at extreme range for the settings and gives a null for all its not iron. hence the reason i always work a null a couple of times just to make sure it is iron as the short pass will also work up to full null, although you may get a squeak comming off the target though that should disapear if you change direction if its deep large iron.
I am new to the GT, thanks for the tips all of you i will try them all out , and i hope to make another vidio and will try the auto sens, i also lerned that i may be able to get that 9" dime by turning the threshold higher and slowing down the sweep but i will try that with the shorter sweep
I find that if the threshold is set too high or not high enough I will lose depth, I run it with a slight threshold so I have just enough to hear it changing. For depth the coil has to be swung very slow and when you hear something you want to check out you swing only over that small are where the target is and by doing this just right back and fourth over only that small area which will be a bit faster the tone will increase to a correct one or one that sure is trying to get right, those are the ones I like as some dimes and pennies have been 12 and more inches deep, but to make my self clear these are only on actual buried target, not those in test gardens or reburied coins.
From experience in the field you will see this more and more.
From experience in the field you will see this more and more.