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iii
FOREWORD …………………………………………………………… i
EXPLICIT DEFINITIONS ……………………………………………… i
FEATURES ……………………………………………………………… i
IMPORTANT …………………………………………………………… i
PRECAUTIONS ……………………………………………………… ii
TABLE OF CONTENTS ……………………………………………… iii
SUPPLIED ACCESSORIES ………………………………………… v
1
ACCESSORY ATTACHMENT ………………………………… 1
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Antenna ………………………………………………………… 1
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Belt clip ………………………………………………………… 1
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Handstrap ……………………………………………………… 1
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Battery pack …………………………………………………… 1
2
PANEL DESCRIPTION ……………………………………… 2–7
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Front, top and side panels …………………………………… 2
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Function display
……………………………………………… 6
3
BATTERY CHARGING ……………………………………… 8–13
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Caution ………………………………………………………… 8
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Regular charging ……………………………………………… 10
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Rapid charging
……………………………………………… 11
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Optional battery case ………………………………………… 12
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Battery information …………………………………………… 12
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External DC power operation ……………………………… 13
4
FREQUENCY AND CHANNEL SETTING ……………… 14–19
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Main band selection ………………………………………… 14
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Mode selection ……………………………………………… 15
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Operating band selection …………………………………… 16
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Setting a tuning step ………………………………………… 18
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Setting a frequency …………………………………………… 18
5
BASIC OPERATION ……………………………………… 20–28
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Receiving ……………………………………………………… 20
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Setting audio volume ………………………………………… 20
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Setting squelch level ………………………………………… 21
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Operating mode selection …………………………………… 21
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Monitor function ……………………………………………… 22
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Attenuator function …………………………………………… 22
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Band scope …………………………………………………… 23
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Transmitting …………………………………………………… 24
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Transmit power selection …………………………………… 24
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Lock function ………………………………………………… 25
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Dualwatch operation ………………………………………… 25
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TV channel operation ………………………………………… 28
6
REPEATER AND DUPLEX OPERATIONS ……………… 29–33
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Repeater operation …………………………………………… 29
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Duplex operation ……………………………………………… 31
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Auto repeater function ……………………………………… 32
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1750 Hz tone ………………………………………………… 33
7
DV MODE OPERATION
(Optional UT-121 is required for IC-91A)
………………… 34–63
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Digital mode operation ……………………………………… 34
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Call sign programming ……………………………………… 34
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Digital voice mode operation ………………………………… 38
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About D-STAR system ……………………………………… 40
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Digital repeater operation …………………………………… 41
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Received call sign …………………………………………… 46
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Copying the call sign ………………………………………… 48
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Break-in communication …………………………………… 51
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Message operation …………………………………………… 52
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Automatic reply function ……………………………………… 54
TABLE OF CONTENTS