I'm new to the Garrett family and have only owned one about 2 weeks and iv already found a 1700's georgivs copper coin a 1943S walking liberty half, 1898 barber dime, 1943 1918 1937 merc dime, 1958 Roosevelt dime. I'm doing quite good with the machine so far. I was just wondering if anyone had any tips on what to dig for signals that are one way or on/ off signals i get quite a few where ever i hunt. Also most of the signals are impossible to find when i dig them up. Sensitivity is set at 7 or 8 on coins mode. If any of you have any tips what so ever on coin hunting i would be glad to listen.