I had a Wilson 1000 magnet mount antenna where the coil inside the antenna went bad. When checked w/ a SWR meter, the meter said everything was fine. Well it wasn't and some things happened to that radio in the past. So please check your coaxial cable and Coil on your antenna every once in a while or it could cost your a lot of dollar$. Also wiping off the surface where you stick your magnet mount helps to keep it dry. Just want to "preserve" everyones equipment.