I bought the Phantom back a while and had it on a mag mounton the Durango. It worked OK but not to where I was thrilled to death. On the move it was hard to tell the difference between the RS800 Mhz duck andtenna inside the truck vs. the Phantom. I'm in the Minneapolis metro and of course there are some dead spots so it was really hard to tell.
BIG BUT, two weeks ago, I had the hole drilled by a radio service company (I don't have the tools) and the Phantom is permanent on the roof. BIG difference now. Very good reception and yes, I still hit a few dead spots driving but hands down a great choice in my opinion. Should have mounted it a long tme ago... Good luck.