OK... I have a quick question. I picked up an F2 last night. Maiden hunt on my parents property by the lake went well, didn't find anything interesting, but it was fun to watch the numbers! Brought it home and hooked it up, turned it on (with headphone this time), and the thing went bonkers! Chattery and all over the map. Unplugged the headphones and it didn't really make a difference. Had to turn the sens. down about halfway. Walked around the corner of the house and all was well. I went around the back without incident and up the other side of the house and about halfway up, it went nuts again. I have a Garrett and a White's and have never had an issue with them. All connections were tight on the Fisher. I do recall having an issue using an electric fence a few years back though. There are no overhead lines and all the electric and other lines come in the side yard, not the front. Are some detectors just that much more sensitive? Or is it an issue with the F2's?