System functions: Tuner

CHAMP has a double tuner for AM/FM. While tuner 1 is receiving the desired radio station, tuner 2 works in the background. Tuner 2 scans the station landscape for additional signals. If a radio station on another frequency is transmitting a stronger signal, there is an automatic switch to this alternative frequency. Both tuners pick up information from the radio data system (RDS), transmitted with the signal of the FM station. When an AM station is set, RDS can received traffic reports from an FM station. When a traffic report is picked up, the AM station is faded out and the report is issued across the loudspeakers.