Operating instructions

DMH Series VHF Radio Table of Contents
BK RADIO Page iii
3.11 SCAN OPERATION.................................................................................................................... 3-12
3.11.1 RECEIVE.............................................................................................................................. 3-12
3.11.1.1 BASIC SCAN ....................................................................................................... 3-13
3.11.2 SCAN CHANNEL GUARD CHANNELS .............................................................................. 3-13
3.11.3 NUISANCE CHANNEL DELETE ......................................................................................... 3-13
3.11.4 TRANSMIT WITH SCAN ON............................................................................................... 3-13
3.11.5 TALKBACK SCAN................................................................................................................ 3-13
3.11.6 CHANGE THE SCAN LIST.................................................................................................. 3-14
3.11.7 GROUP SCAN ..................................................................................................................... 3-14
3.12 PRIORITY SCAN........................................................................................................................ 3-14
3.12.1 DUAL PRIORITY SCAN....................................................................................................... 3-15
3.12.2 OLD-STYLE BK PRIORITY SCAN ...................................................................................... 3-15
3.12.3 PRIORITY MODE A WITH SCAN........................................................................................ 3-15
3.12.4 PRIORITY MODE B ............................................................................................................. 3-16
3.12.4.1 PRIORITY MODE B WITH SCAN ....................................................................... 3-16
3.12.5 PRIORITY MODE C............................................................................................................. 3-16
3.12.5.1 PRIORITY MODE C WITH SCAN ....................................................................... 3-16
3.12.6 CHANGE THE PRIORITY 1 CHANNEL .............................................................................. 3-16
3.13 UNIT-TO-UNIT CALL ................................................................................................................. 3-17
3.13.1 UNIT-TO-UNIT MODE......................................................................................................... 3-17
3.13.2 INITIATING A UNIT-TO-UNIT CALL.................................................................................... 3-18
3.13.3 RECEIVING A UNIT-TO-UNIT CALL................................................................................... 3-18
3.13.4 UNIT-TO-UNIT CALLBACK................................................................................................. 3-18
3.13.5 PROGRAMMING UNIT-TO-UNIT CALL LIST ..................................................................... 3-18
3.13.6 PROGRAMMING A LABEL.................................................................................................. 3-19
3.13.7 PROGRAMMING A NUMERIC ID ....................................................................................... 3-19
3.14 EMERGENCY CALL................................................................................................................... 3-19
3.15 USER SELECTED CHANNEL GUARD...................................................................................... 3-20
3.16 OTHER OPERATIONAL FEATURES ........................................................................................ 3-21
3.16.1 SCAN DELAY....................................................................................................................... 3-21
3.16.2 HI/LO POWER ..................................................................................................................... 3-21
3.16.3 DTMF ENCODING (Analog Mode Only).............................................................................. 3-21
3.16.4 ANI ENCODING (Analog Mode Only).................................................................................. 3-21
3.16.5 TIME-OUT TIMER................................................................................................................ 3-21
3.16.6 BUSY CHANNEL ................................................................................................................. 3-22
3.16.6.1 BUSY CHANNEL INDICATION ........................................................................... 3-22
3.16.6.2 BUSY CHANNEL LOCKOUT............................................................................... 3-22
3.16.6.3 BUSY CHANNEL LOCKOUT OVERRIDE........................................................... 3-22
3.17 ALPHANUMERIC DISPLAY FEATURES................................................................................... 3-23
3.17.1 CHANNEL LABELS.............................................................................................................. 3-23
3.17.2 GROUP LABELS.................................................................................................................. 3-24
3.18 DEFINITIONS AND ACRONYMS............................................................................................... 3-24
SECTION IV
THEORY OF OPERATION
4.1 INTRODUCTION .......................................................................................................................... 4-1
4.2 EQUIPMENT DESCRIPTION.......................................................................................................4-1
4.2.1 SYSTEM BOARD................................................................................................................... 4-1
4.2.2 RX BOARD ............................................................................................................................ 4-1
4.2.3 HIGH LEVEL POWER AMPLIFIER BOARD ......................................................................... 4-1
4.2.4 OPTIONS BOARD ................................................................................................................. 4-1
4.2.5 CONTROL BOARD................................................................................................................ 4-1
4.2.6 VCO BOARD.......................................................................................................................... 4-1