12 ContentsContentsChecking your recent calls ........................................... 37Checking that the channel is clear (monitor) ................ 38Turning monitor on and off...................................... 38Call alert paging .......................................................... 39Checking whether a radio is available .......................... 404 Listening to channel traffic ....................... 41Selecting a voting or scan group .................................. 42Using your radio in different repeater areas ................. 44Suspending a channel from a voting group .............. 44Scanning a group of channels ...................................... 45Understanding the different types of scanning ......... 45Making a call while scanning.................................... 45Suspending a channel from a scan group ................. 46Editing a background scan group ............................. 47Hearing faint and noisy signals .................................... 49Turning squelch override on and off......................... 495 Sending and receiving messages ............. 50About messages .......................................................... 51Sending a message .................................................. 51Informing other radio users of your status ................... 53Requesting a status update .......................................... 546 Safeguarding you and your radio ............ 55About locking your radio ............................................. 56Locking your radio ................................................... 56Unlocking your radio................................................ 56Making a radio inoperable ........................................... 57Sending a Radio Inhibit request ................................ 57Sending a Radio Uninhibit request............................ 58Radio monitor ............................................................. 59Sending a Radio monitor request ............................. 59About encryption ........................................................ 60Encrypting your calls ................................................ 60Making an encrypted call ......................................... 61Receiving an encrypted call ...................................... 61Changing your radio’s encryption key ...................... 62Removing encryption keys from your radio............... 63About emergency calls ................................................ 65Making a priority call................................................ 65Understanding emergency mode.............................. 66