ivTABLE OF CONTENTS 12345678910111213141516171819FOREWORD .................................................................................... iIMPORTANT .................................................................................... iEXPLICIT DEFINITIONS .................................................................. iPRECAUTIONS ............................................................................... iiSUPPLIED ACCESSORIES ........................................................... iiiTABLE OF CONTENTS .................................................................. ivQUICK REFERENCE GUIDE .................................................. I–XIV■ Installation ................................................................................ I■ Your first contact ..................................................................... X■ Repeater operation ............................................................... XII■ Programming memory channels........................................... XIII1 PANEL DESCRIPTION ........................................................ 1–14■ Front panel— controller .......................................................... 1■ Function display ...................................................................... 3■ Function guide indications ...................................................... 7■ Main unit ................................................................................. 9■ Microphone (HM-133) ........................................................... 11■ Microphone keypad ............................................................... 12■ Optional microphones (HM-154)............................................ 142 SETTING A FREQUENCY ................................................. 15–19■ Preparation ........................................................................... 15■ Using the tuning dial ............................................................. 17■ Using the [Y]/[Z] keys .......................................................... 17■ Using the keypad .................................................................. 17■ Tuning step selection ............................................................ 18■ Lock functions ....................................................................... 193 BASIC OPERATION .......................................................... 20–28■ Receiving .............................................................................. 20■ Transmitting .......................................................................... 20■ Selecting output power ......................................................... 21■ Operating mode selection ..................................................... 21■ Squelch attenuator ................................................................ 22■ V/V, U/U simultaneous receive (Para-watch) ........................ 23■ Sub-band mute/busy beep .................................................... 24■ Monitor function .................................................................... 24■ Single band operation ........................................................... 25■ One-touch PTT function ........................................................ 26■ Audio mute function .............................................................. 27■ Band scope ........................................................................... 274 REPEATER OPERATION .................................................. 29–34■ General ................................................................................. 29■ Accessing a repeater ............................................................ 30■ Subaudible tones .................................................................. 32■ Offset frequency .................................................................... 345 DV MODE OPERATION (Optional UT-123 is required) ..... 35–59■ Digital mode operation .......................................................... 35■ Call sign programming .......................................................... 35■ Digital voice mode operation ................................................. 38■ DV automatic detect ............................................................. 40■ About D-STAR system .......................................................... 41■ Digital repeater operation ...................................................... 42■ Received call sign ................................................................. 47■ Copying the call sign ............................................................. 49