6 Contents
(conventional mode only) ......................................... 114
11 Encryption ...........................................................115
About encryption .......................................................... 116
About the proper key detect feature......................... 116
Encrypting calls ............................................................ 116
Making an encrypted call.............................................. 117
Receiving an encrypted call ......................................... 118
Changing the radio’s encryption key ............................ 118
Changing the transmit encryption key...................... 119
Changing the transmit encryption key back to
the default setting..................................................... 119
Changing the encryption keyset............................... 119
Removing encryption keys from the radio .................... 120
Deleting an encryption key....................................... 120
Deleting all encryption keys ..................................... 120
Updating encryption keys over-the-air.......................... 121
Using an encryption demonstration key ....................... 121
Activating the demo key ........................................... 121
Making an encrypted call using the demo key ......... 122
Receiving an encrypted call using the demo key ..... 122
12 Customizing radio settings ...............................123
Extending battery life on a shift .................................... 124
Turning low power transmit on or off........................ 124
Changing the volume of all audible indicators.............. 125
Changing the volume of keypress tones ...................... 125
Changing to quiet operation ......................................... 126
Changing to silent operation......................................... 126
Turning on backlighting ................................................ 127
Turning backlighting on momentarily ....................... 127
Adjusting the display contrast....................................... 128
13 Charging and caring for batteries .....................129
About the chargers ....................................................... 130
Special conditions when using IS radios ...................... 130
Before using the charger.............................................. 131
Handle the battery safely ......................................... 131
Attaching of labels.................................................... 131
Charging temperatures ............................................ 132
Temperature range .................................................. 132
Temperature indications........................................... 133
Leaving the battery on charge.................................. 133
Receiving calls while charging ................................. 134
Low battery warning ................................................. 134
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