A:Answer Serius says one must mount an external antenna to get a good view of the sky. This involves routing wires. I do NOT do this, I leave it on my dash. You may need to move it around a bit, the signal transmits thru the windshield, but not the metal in the car. I rent cars often, so I move my radio when I do. Keep in mind the cord is long, and it is sensitive to damage, so if you move it frequently it will wear out. (about every couple years in my experience). However, a replacement antenna is not expensive, so it is not a big deal to me.
