I copied and pasted this for ya from a previous post. Hitting the quick mask button will tell you the story. You ain't gonna decipher a coin by a couple of nails just yet. In multitone co running the machine you can avoid them very very easy. I think you are running in TTF aren't cha?
The nail story..... I had a problem with nails for a while until I learned what to listen and check for. The key is to listen for. On a point of iron or steel for that matter, the Etrac will say dig me most of the time. The key is you will have a little grunt most all the time on the opposite move/swing of the coil one way or the other. To me that is the first telltale sign it's not what my mind initially said it might be from the sound. Always start circling the target, this is key slowly isolating the sound, if it nulls out you have gotten the detection field dead in line with the nail or piece of iron, not just hitting the point. It will null almost every time if it is a nail. Disclaimer on the last thought, if the nail or pointed piece of iron is stuck straight up facing the sky, you will more than likely dig it. Next check is switch over into quickmask all metal. Your true readings of what is in the ground will show themselves. If the FE jumps straight up keep swinging and leave the digger in the holster. When you pinpoint is the next check, if it pinpoints to the side of the visual spot on the ground you are getting the signal, leave the digger in the holster again. It isn't what you think it is. Really all of this is letting the machine do it's work for you instead of you doing it yourself, "digging holes" and the above described steps I go through only take just a few seconds once you trust the machine and let it teach you. Quite often just one of these steps will let you know keep on moving or dig. If it is good and solid all the way around the target sound wise it just might be a good target. What you will find out is the ETrac when it hits a coin it will sound "slightly totally different", for a lack of better words, from all the other other sounds the detector makes. You will find this out once you run one for a while. A discrimination monster is how I like to describe the machine. Key is to let the machine do it's job and learn from it.
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