Well yesterday I hunt on military ground for the first time with the Etrac. I started in auto +3 and the machine was driving me nuts. Almost sounded like EMI. I tried the noise cancel thing and that didn't work. :bangahead01: So I started lowering my sens. I finally had to go to manual 27 before it even came close to settling down. This was a new area and maybe there was something there the Etrac just didn't like...........AT ALL!! We went to a new location and I was able to put it back to where I had it originally. I know there is a ton of old brass casings laying around, but this was just over the top. Any suggestions?