iiiIntroductionTable of ContentsWelcome ... ............................................................. iHistory of Revisions................................................ iOrdering Information ............................................. iIntroduction..................................... iContacting the Factory ......................................... iiProduct Registration and Support ........................ iiGetting Started ..................................................... 1Display ................................................................ 1Annunciators ....................................................... 2Controls .............................................................. 2Power/Volume/Squelch.................................. 2Large and Small Knobs .................................. 2Buttons................................................................ 2Flip/Flop (Arrows) ........................................ 2EC (Emergency Channel) .............................. 3MON (Monitor) ............................................ 3RCL (Recall) .................................................. 3MEM (Memory) ............................................ 3Detailed Operation ................................................ 4Power On/Off ................................................ 4Volume .......................................................... 4Squelch ......................................................... 4Selecting Frequencies .......................................... 4Frequency Monitoring ......................................... 5Recalling a Frequency.......................................... 5Remote (REM) ..................................................... 5Auto Stack List (LST) .......................................... 6User Stored Frequencies (MEM) .......................... 6Weather (WTH) .................................................. 6Aborting a Frequency Recall ................................ 6Removing a Frequency from User Memory.......... 7Replacing a Frequency from User Memory .......... 7Assigning an ID to a User Frequency ................... 7Intercom Function .............................................. 8Stuck Mic ............................................................ 8System Functions................................................... 9Software Version .................................................. 9RF Level ............................................................ 10Noise Level........................................................ 11Headphone Level .............................................. 11Mic Squelch 1 and 2.......................................... 11Transmit Mic ..................................................... 11Intercom Level .................................................. 12Sidetone Level ................................................... 12Display Brightness ............................................. 12SL40 Specifications.............................................. 13Features............................................................. 13Accessories and Packing List ............................... 14Performance ...................................................... 14Physical ............................................................. 14Table of Contents