GTI 2500 question... deep targets

[hollowpointred]

ive got a question regarding deep targets (coins) and how the GTI 2500 reads them. i have noticed in bench tests that my 2500 will give a faster blip than normal when it runs across a deep coin in the discrim modes. my question is ...will a deep coin still trigger the belltone? or will it sound off as a quick,mid tone blip? i have had the machine for about 3 months now and i am starting to get into the meat of learning how to use it. i must say however, that i havent found many deep coins with it.i think i must be passing over them thinking they are junk. i am told that the gti is a great deepseeking machine, but only once it has been mastered. im still working on that part! does anyone have any expierience finding the deepies with a gti2500?

[nhggagnon]

Hey Hollow,

I've had a 2500 for a little over 3 years now and have dug coins down to 10"-11" on the 9.5" coil. Granted the ground was wet, and not too many other signals to interfere. Slowing down and overlapping is really the key for going deep with the 2500. Of course that really applies to most detectors.

The belltone should still ring if you get it right in the sweet spot. if you hear a tone that sounds promising, start swinging over the area. try other directions too.

Also, I've got mine set to voice so that she can tell me the number of the item detected. When i get one thats not iron I'll check it a couple times and if its repeatable or close to it (i.e. 6-5-6-6) I'll pinpoint it and check depth and size. If you get a repeatable target coin sized at 10" dig away!

HTH

Gary

[hollowpointred]

whats up gary?! thanks for the reply. so what you are saying is that the 2500 is accurate at deep depths as far as the belltone and size feature?
that is interesting. i always thought that the size feature was kinda sketchy at depths over say.......six inches. i will have to give it another go. thanks for the help.

[nhggagnon]

Now i didnt exactly say that size would be perfect :) It is still fairly accurate, it should come in as an A or B size target. Sometimes a C if there is a lot of mineralization around the item.

Then again im a glutton for punishment and if im getting a repeatable signal above a 3.5 im digging it. Find some pretty interesting stuff that way. Lot of junk too but just think of it as you'll never have to wonder about that signal again LOL

Gary

[paulbrrtt]

hi all i was reading your problem i have a gti1500 and the prob i have is similer what i find is i sometimes go over a target and it rings at say 5 or 6 then when i dig the top layer off the signal goes to a 1 or 2 i dug most of these to see and it was junk but why ring high to begin with tried stamping the floor and diff angles but still get caught out with it the main problem i et however is i used to have a gta500 i think the gti can give you too much infomation like for example i get a good signal but on my image it shows a big object down 10-12 inches and i think tin can or bigger so i dont dig it whereas my gta 500 wouldnt tell me the size i prob would have dug it up also i found a roman brooch with the gta 500 and went over it with the gti 1500 and the signal was just 2.5 so in theory if i had gone over that brooch with the gti not the gta i wouldnt have found it (does that make sense lol) anyway bck to the learning curve lol take care now

[nhggagnon]

Hi Paul,

Yeah I have seen that behaviour on the 2500 too. Best advice I can give is listen for the consistancy of the tones and watch where on the meter its showing up. If you can get a consistant tone from a couple directions and you get no jumping around on the meter. its probably a good target, but mineralization or "halo" will still kill you once in a while, just the nature of the beast.

Happy Hunting

Gary

[redbeardrelics]

Hi guys, this is my first post here. I have had a GTI2500 since last August, and consistently find coins in the 6"-8" range with it with the standard 9.5" imaging coil. These are usually signals that are fairly consistent in tone, metal notch type, and visual size id. I have dug a few slightly deeper coins where the tone is not consistent, meaning it only sounds off every other pass, or only when swinging in one direction, but not from other directions. at these depths the metal type notch can jump around all over the place, and the size will usually not lock in, and shows up as a "cone" or not at all. I have found that if the tone is fairly consistent, and the metal notch falls in the 6-10 range more often than not, it is usually worth digging up to see what it is. It has been pretty dry here on the eastern shore of Maryland where I live since I got this machine, and have noticed that the image size usually only locks in at 6" and less, but will lock in at 8" when the soil is wetter. Of the three types of info this detector gives you in discrimination mode, it seems the tone is most reliable on the deeper items, then the visual metal type notch, and lastly the size imaging. I usually hunt in the coins mode, and on iffy signals I will go over it in pinpoint mode to see how it looks and sounds, and if still not convinced I will switch into all metal mode to hear and see how the target "looks" in that mode. Sometimes the "discrimination coins mode" will say it is a different type metal than the "all metal mode" will indicate. I have dug up a lot of those targets, and sometimes the coins mode was accurate, and other times it was the all metal mode that was correct. It sounds like you guys are getting similar results?

[montyburns]

Your deep belltone signal will be shorter because the coil puts out a cone shaped signal and it spends less time over the target at depth. A coin at depth will still cause a belltone signal but it may just be a fast blip whereas an aluminum can will put out a longer tone due to its size. In order to sort out those deep coin signals you may have slow your swing speed way down and hit it from several directions to isolate and pinpoint it. The deepest coin I ever dug was a penny at just over 9" anyway. It was in a planted club hunt and I had no trouble finding it. Monty

[rip]

Had the 2500 for about 5 years but sold it to pay the rent last year ! But anways i used to find coins in the 8-10 inch range all the time,but found that the belltone could be a little iffy.I was talking to a guy monday that has one and he told me that he found a half dollar at 18 inches.Said it was a jumpy signal then disapeared completly,but he dug down anyways and found the half.