Recently bought a 2002 147 and the standard radio reception is C**P. I will probably change the standard radio/CD at some point, but have got other issues to sort out first. I've had the unit out to check the aerial connection and all appears well. Is the aerial lead all one piece to the roof aerial or are there any connections along the way that may be loose? Any other advice you guys could give (short of ripping the whole thing out)????