Hey Guys,
Yea, same stuff happens to me. It really happens when I forget to turn the manual sensitivity back up when I am probing the hole. For example, I may be detecting at manual SEN = 15, get a coin hit, and then put the X1 into the hole without returning the manual sensitivity to 24. With my X1 probe, 24 seems to be the highest setting I can use with the most tolerable amount of interference. If I go higher, the probe puts out lots of noises. So on the lower sensitivity, you can tell the difference.
Here's two other unexpected things I learned from the X1 probe with respect to false coin signals coming from rusty nails.
1. The difference between a broken up coin hit, and a broken up falsie hit. (Use this to examine fainter iffy signals)
2. The difference between a solid coin hit, and a solid falsie hit. (Use this to examine solid hits)
It showed me the difference between weak, broken signals that are coming from a far away coin, and chopped off, broken, good-sounding signals being produced by a rusty nail. The broken coin tones sound like they are being chased by threshold, and sound like they are poking out of threshold. The broken falsie tones sound like they are poking out of silence, or have little bits of silence in between tone components. You can use this concept while you are using your search coil to check out those "apparant coin hits" that may or may not be false coin signals. The search coil reacts the same as the X1 probe does. The X1 probe also shows that an iron falsie grades into a null. For example, the X1 probe showed me that at a distance, it picks up a beautiful "apparant" coin hit. But then as you move the probe closer to the rusty nail, those good coin tones grade into a null zone with little bits of the original "apparant" coin hit flying out of the null zone. And then at an even closer distance, the X1 produces a pure null zone of silence. After I realized what the X1 probe was doing, I applied those same two concepts with the search coil, and it reduced the number of rusty objects I dig.
Mike