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MM-014716-001
4
TABLE OF CONTENTS
Page
7.16 CHECKING OR CHANGING THE SELECTED TALK GROUP............................................28
7.17 ADJUSTING DISPLAY AND BUTTON BACKLIGHT BRIGHTNESS.................................28
7.18 STEALTH MODE ......................................................................................................................28
7.18.1 Enabling Stealth Mode ..................................................................................................29
7.18.2 Disabling Stealth Mode .................................................................................................29
7.19 ADJUSTING SIDE TONE AUDIO LEVEL..............................................................................29
7.20 CHANGING OPERATING MODE ...........................................................................................29
7.21 RECEIVING AND TRANSMITTING VOICE CALLS............................................................29
7.21.1 Receiving a Voice Call ..................................................................................................30
7.21.2 Transmitting a Voice Call..............................................................................................30
7.22 ADJUSTING AUDIO TREBLE LEVEL ...................................................................................30
7.23 INTERCOM MODE ...................................................................................................................31
7.24 TALK GROUP LOCK OUT.......................................................................................................31
7.24.1 Lock Out a Talk Group..................................................................................................32
7.24.2 Unlock a Talk Group .....................................................................................................32
7.25 SCANNING ................................................................................................................................32
7.25.1 Checking or Changing Active Scan Mode ....................................................................33
7.25.2 Scanning Priority ...........................................................................................................34
7.26 MAKING SELECTIVE CALLS ................................................................................................34
7.26.1 Manually Dialing a Selective Call (System Model Control Head)................................35
7.26.2 Speed Dialing a Selective Call ......................................................................................35
7.26.3 Receiving a Selective Call.............................................................................................35
7.26.4 Terminating a Selective Call .........................................................................................35
7.27 SELECTIVE ALERT..................................................................................................................36
7.27.1 Sending Selective Alert Messages.................................................................................36
7.27.2 Receiving Messages.......................................................................................................37
7.27.3 Defining Pre-Programmed Messages ............................................................................37
7.28 TELEPHONE INTERCONNECT CALLS (SYSTEM MODEL CONTROL HEAD) ..............37
7.28.1 Placing an Interconnect Call..........................................................................................37
7.28.2 Receiving an Interconnect Call......................................................................................38
7.29 EMERGENCY COMMUNICATIONS......................................................................................38
7.29.1 Declaring an Emergency Call or Alert ..........................................................................38
7.29.2 Silent Emergency...........................................................................................................39
7.29.3 Clearing an Emergency Call or Alert ............................................................................39
7.29.4 Receiving an Emergency Call .......................................................................................40
7.29.5 Dismissing an Emergency Call......................................................................................40
7.30 ENCRYPTION ...........................................................................................................................41
7.30.1 Automatic Encryption....................................................................................................41
7.30.2 Manual Encryption (System Model) .............................................................................41
7.31 PRESET BUTTONS...................................................................................................................42
7.32 DYNAMIC REGROUPING.......................................................................................................42
7.33 GPS COORDINATES ................................................................................................................43
8 P25/EDACS/CONVENTIONAL COMMON OPERATION ...........................................................44
8.1 CH721 FRONT PANEL COMPONENTS .................................................................................44
8.1.1 Primary Functions (Quick Access)................................................................................46
8.2 TURNING THE RADIO ON......................................................................................................46