Garret GTI 2500 Gremlin

[CaptainJack]

All right, I have been metal detecting now for twenty years; usually with simple dial machines, which worked fairly well. However, about a year ago I decided to upgrade to a Garret GTI 2500 to help me save time from digging up junk. Ever since I bought the (new) machine, though I have been disappointed by regular wolf tones and phantom beeps. For example, I will be out in the field and get a good beep which the machine says is a dime or something but when I pass the coil over the location a second time the signal disappears only to come back on the ninth sweep. I have successfully bench tested the machine before I go into the field and have even sent it back to garret to but still find the same problem.

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[BaronH]

My Garrett 250 does the same thing. My experience is its usually attributed to a small rusted target standing on end, like a tiny nail or staple.

[norbyx]

My detectors do the same, I think that most of them do. I think that the discrimination might be fooled on some passes and as soon as you try to find the target the discrimination does make it dissapear. I say this because I hunt in a mode called Stereo mixed mode, so that means that in my left year I have a all metal sound and on my right I have the discrimination sound. So once I have a good beep on my right ear and than dissapears, I can still hear the signal on my left ear, so it is there, there is metal under the dirt, but most likely junk.

[PikesPeakCharlie]

This might help a little bit ?? lately I've been running my GTI in all metal,then will switch to jewelry or relics mode for the ID ,seems to have been helping me . Good luck