Hey!

The rubber on my original roof antenna is damaged and the antenna with base needs to be replaced.I've got the diversity system which I guess makes things a little bit more complicated. I got one thin coax cable from the roof antenna which connects to the diversity box. I guess that antenna cable is powered with 12v. Can I just cut and use the original coax cable with one of these antennas? :

http://www.ebay.com/itm/VW-Auto-Sport-AM-FM-Haifisch-Shark-Fin-Radio-Dach-Antenne-Haiantenne-Dachantenne-/140975786739?pt=Accessoires_Weitere_Kleidung&var=&hash=item20d2cfcaf3
http://www.ebay.com/itm/Shark-Antenne-Audi-A3-A4-A6-80-90-100-TT-HaiFlosse-Haiantenne-Fin-Dachantenne-/250915926058?pt=DE_Autoteile&hash=item3a6bc1302a
In that case, which one should I choose? Is it better to chose the amplified one and just connect it to a 12v ignition, or will it be damaged because of the already 12v's running in the coax cable to it?

Thanks!