Hold it and the radio will start with the current frequency to search and storagethe stations automatically.Memorize the strong signal firstly,then the weak signal.Click it again to stop searching.PTY: Press it to choose the station on RDS mode.TA/AF: Press it for TA on, press again for TA off.(Auto scan RDS stations)Hold it for AF on, hold again for AF OFF.(RDS function on)Press< or >can manual up or down searching different stations.Press or can automatic up or down searching different stations.Click to stereo on/off.:Press it for mute.Click it and the to switch between FM1/FM2/FM3.FM interfaceClick on the menu to enter radio mode,as shown7.1 Radio9