27Key OperationsSQ Turn to adjust the squelch.Press to toggle Close Call modes.BCD536HP Press and hold to turn on Close Call Only mode.Press Func then SQ to start Fire Tone-Out.ScrollControlPress to enter Function mode for 3 seconds.Press and hold to lock Function Mode. Press again to unlock.Function Press to select a menu item or save an entry in Menu Mode.BCD536HP Turn to select a menu item in Menu Mode.Turn to select characters with Data Naming.Turn to select Scan/Search direction and to continueScan/Search in Scan/Search Modes.Turn to select Channel or Frequency in Hold Mode.Turn in Channel Hold to scroll Channels/Frequencies.Turn in Department Pause to scroll Departments in Scan Mode.Turn in System Pause to scroll Systems.Turn in Department Pause and select Custom Searches toenable in Search Mode.Turn to select next recording in Replay Mode.Turn to resume Close Call search in Close Call Only Mode.Turn to start a Quick Search in CC Hold Mode.Turn to select next receivable Weather Channel in Weather Scan.Turn to select Tone-outs in Tone-out Standby Mode.Press to return to previous mode.Avoid Press to toggle Channel/Frequency Avoid statusin Receive/Hold Modes.BCD536HPPress to toggle Avoid status in Scan Receive Mode.Press and hold to clear all Channel Avoids in current ConventionalSystem or Site in Scan Hold Mode.Press and hold to clear all Search Avoids in Search Hold Mode.Press Func then Avoid to review all Search Avoidsin Search Modes.ZipBCD536HP Press to enter country-zip/postal code.ServBCD536HP Press to select Service Types.