Contents 5Making an encrypted call.............................................. 122Receiving an encrypted call.......................................... 122Removing encryption keys from the radio .................... 12311 Customizing radio settings .............................. 124Changing the volume of all audible indicators .............. 125Changing the volume of keypress tones ...................... 125Changing to quiet operation ......................................... 126Changing to silent operation......................................... 126Turning on backlighting ................................................ 127Adjusting the display contrast....................................... 12812 Charging and caring for batteries .................... 129About the chargers ....................................................... 130Special conditions when using IS radios ...................... 131Before using the charger .............................................. 131Charging the battery ..................................................... 135Maintaining battery life and performance ..................... 137Storing batteries ........................................................... 138Disposing of batteries ................................................... 13813 Troubleshooting ................................................ 139About troubleshooting................................................... 140When your radio won’t turn on...................................... 140Identifying the radio’s audible tones ............................. 140Viewing radio information ............................................. 141General care................................................................. 141Directive 1999/5/CE Declaration of Conformity 143Tait Software Licence Agreement..................... 144
