Depth Of Find With GMT

[bigtow08]

I am very new, is there any way to tell the approximate depth the item you detected? I have a GMT.

[Steve Herschbach]

A shallow small item can sound a lot like a deep large item. About all you have to go on is how sharp or how broad the target sounds. A small sharp "zip-zip" is a tiny surface target. A duller broader signal is something larger and deeper. But how large and deep is hard to gauge before you dig it. I have started with soft signals at the surface that prove to be a can a foot and a half down.

And welcome to the forum! 

[Steve Herschbach]

I should point out that many detectors have depth meters. They are really just a signal intensity trick. They calibrate the detector to what a coin, usually a dime, will have for signal strength at various depths. Something larger than a dime but deeper will mimic the same signal. However, a good target id detector can help there. If the detector says dime at 3" and you have dug 5", something is amiss.

The depth calibration for something like a dime is also matched to a particular coil size, normally the one that comes with the coil. Changing coil sizes will throw the depth reading off. A few detectors, like the White's V3i allow you to tell the detector what coil is on the machine to compensate. A few newer detectors also have chips in the coil which tell the machine what coil is on it, again to compensate for this difference.

[deutran]

Hi Bigtoe

Another quick way which can help is turn the coil sideways.If its deep you most probably won't hear it anymore.If its shallow it will help you pinpoint as well.

[bigtow08]

Thanks for the info. I need expierence with my metal detector to help with this problem.