if you get one of those billet antennas, it'll screw it up, but if you buy a Scosche rubber antenna, with an actual antenna wire in it, thats not quite so bad. Or if you make your own shorty antenna. If you're in a decent sized area, you shouldnt have any problems, its when you start getting out into the boonies (like me) that you lose reception. If I'm ever on a roadtrip, and I really want radio, then I put my stock antenna back on, lol.