The unit provides basic functions of RDS, including PI (ProgramIdentification), station name , RT (Radio Text), CT (Clock Time),AF (Alternative Frequency), TA (Traffic Announcement) and PTY (ProgramType) Selection.Alternative Frequencies Lists are used for the same program serviceand used in conjunction with the PI code (Program Identification code)to assist automatic tuning.Using this information, a radio can automatically search out anotherstation that is playing the same material. This is useful when the stationyou are listening to is fading out.To activate AF function, touch the [AF] button on the user interface.To cancel this function, do the operation above again.Note:During auto switching radio frequency, some interference could beheard. Turning off AF function can settle this problem.The TA (Traffic Announcement flag) function t receive trafficannouncements automatically no matter what media source is playingback. The TA function can be activated a TP (Traffic Program)station broadcasting traffic information.When TA is activated and a traffic announcement is received, the currentplaying source will be overridden by the traffic announcement if thecurrent radio band is FM and the 'TA' indicator lights up, indicating thatthe unit is waiting for traffic announcements.The unit returns to the original source after the traffic announcement hasbeen received.To activate TA function, touch the [TA] button on the user interface.To cancel this function, do the operation above again.radioAF functionTA functionlets he unitbyRDS operations10