Garroth

Hi, a friends Audi 03 A4 1.9 TDI has crappy radio reception and it seems to be related to the common fault in the Antenna amplifier circuit board located on the passenger side over the rear windshield where cold weather makes it crack and stop working.

I want to try fitting an aftermarket aerial, just somewhere in behind the dash, but Im unsure what connection I should be looking for or what adapter I need to buy. I dont suppose anyone here knows? Its the Audi Symphony stereo, this one:





I was also wondering if I could just get an unpowered aerial and try it, we do live in a pretty strong reception area, or do I need to supply power to an amplified aerial? What connector/adapter do I need to supply this power?

This is the kind of antenna Im thinking about:


Any help appreciated thanks.