Principles of Operation: Antenna
WARNING: This page is about a different car, the 2014 Lincoln MKX and 2014 Ford Edge. However, it is still accessible from the selected car via links, so may be relevant.
The roof-mounted antenna receives both AM and FM radio waves. The audio signals are then sent to the ACM through the AM/FM antenna cable. An antenna module is integral to the roof-mounted antenna base. The ACM powers the antenna to improve AM/FM reception.
If the vehicle is equipped with satellite radio, a combination AM/FM/satellite antenna is utilized. In addition to the AM/FM reception, satellite audio is transmitted to the ACM through a satellite radio antenna cable.