fades

In my new 2015 Genesis Ultimate I have begun to notice my FM radio stations in the Chicagoland area (major FM stations) fade in and out. Anyone having similar problems with radio ? Perhaps I can make this less noticeable by adjusting my settings ? I made sure surround sound is on - so what...

A recently purchased pre owned 2011 4.6 seems to lose XM signal much more frequently than new vehicles I have owned. Is this a radio or antenna problem?