So driving down the road one day, the reception in my 2006 LR3 just tanked.  One second it was fine, the next it was poor.  Shortly after that, I had the cracked pano roof replaced (pre-existing condition), and they had to take off the antenna to replace the glass, but that didn't seem to change my reception any.   I still get reception, it's just poor.  It cuts in and out constantly even when city driving and easily in reception range.    Any ideas?