UNIDEN Model uh089sx UHF CB RadioContentsIntroductionControls / Connectors ................................................................................. 3Indicators ..................................................................................................... 4Included with Your uh089sx ....................................................................... 5OperationWarranty .......................................................................................................15Features 2Troubleshooting 2..........................................................................................................................................................................................................................................Preventive Maintenance ........................................................................... 2Setting the Squelch .................................................................................. 6Monitor ...................................................................................................... 6Selecting a Channel ................................................................................. 6Transmitting .............................................................................................. 7Call Function ............................................................................................. 7Using Repeater Channels ........................................................................ 7Operating the uh089sx in Duplex Mode ................................................... 8Scanning.................................................................................................... 8Open Scan (OS) Mode ............................................................................. 8Group Scan (GS) Mode............................................................................. 9Programming Scan Channels ................................................................... 9Selecting the Call tone ..............................................................................10Roger Beep ..............................................................................................10Busy Channel Lockout ..............................................................................10VOX Operation (optional VOX headset required) .....................................11Programming the Instant Priority Channel ................................................11Recalling the Instant Channel ...................................................................11CTCSS (Continuous Tone Coded Squelch System) .................................11DCS (Digital Coded Squelch) ....................................................................11UHF CB Channels & Frequencies.............................................................12CTCSS & DCS Code List .........................................................................131