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SUPPLIED ACCESSORIES
The transceiver comes with the following accessories.
Qty.
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DC power cable (OPC-025D) ............................ 1
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Hand microphone (HM-36) ................................ 1
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Spare fuses (FGB 30 A) .................................... 2
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Spare fuse (FGB 5 A) ........................................ 1
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CW keyer plug (AP-330) .................................... 1
TABLE OF CONTENTS
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FOREWORD ........................................ i
IMPORTANT ........................................ i
EXPLICIT DEFINITIONS ..................... i
PRECAUTIONS ................................... i
TABLE OF CONTENTS ...................... ii
QUICK REFERENCE GUIDE ........ I – X
■
Installation ....................................... I
■
Operation ....................................... III
■
Your first contact ........................... IV
■
Ready to call CQ? ......................... IX
1 PANEL DESCRIPTION ........... 1 – 12
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Front panel ..................................... 1
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Rear panel ...................................... 7
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LCD display .................................... 9
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Multi function switches .................. 11
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Microphone (HM-36) .................... 12
2 INSTALLATION AND
CONNECTIONS ................... 13 – 17
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Unpacking .................................... 13
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Selecting a location ...................... 13
■
Grounding ..................................... 13
■
Antenna connection ...................... 13
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Required connections ................... 14
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Advanced connections ................. 15
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Power supply connections ............ 16
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Linear amplifier connections ......... 17
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External antenna tuner
connections .................................. 17
3 BASIC OPERATION ............. 18 – 25
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When first applying power
(CPU resetting) ............................. 18
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Initial settings ................................ 18
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Selecting an operating band ........ 19
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Selecting VFO/memory mode ...... 20
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VFO operation .............................. 20
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Frequency setting ......................... 21
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Operating mode selection ............ 23
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Volume setting .............................. 23
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Squelch and receive (RF)
sensitivity ...................................... 24
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Basic transmit operation ............... 25
4 RECEIVE AND TRANSMIT .. 26 – 46
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Operating SSB ............................. 26
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Operating CW ............................... 27
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Electronic keyer functions ............ 29
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Operating RTTY (FSK) ................. 35
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RTTY functions ............................. 36
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Operating AM ............................... 40
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Operating FM ............................... 41
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Repeater operation ....................... 44
5 FUNCTIONS FOR RECEIVE
........................................... 47 – 54
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Simple band scope ....................... 47
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Preamp/Attenuator ....................... 48
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RIT function .................................. 48
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AGC function ................................ 49
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IF filter selection ........................... 50
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IF (DSP) filter shape ..................... 51
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Noise blanker ............................... 51
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Meter peak hold function .............. 51
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Twin PBT operation ...................... 52
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Noise reduction ............................ 53
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Notch function .............................. 53
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Dial lock function .......................... 53
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Voice squelch control function ...... 54
6 FUNCTIONS FOR TRANSMIT
........................................... 55 – 61
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VOX function ................................ 55
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Break-in function .......................... 56
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∂
TX function ................................ 57
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Monitor function ............................ 57
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Speech compressor ..................... 58
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Transmit filter width selection ....... 58
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Split frequency operation .............. 59
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Quick split function ....................... 60
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Measuring SWR ........................... 61
7 MEMORY OPERATION ........ 62 – 68
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Memory channels ......................... 62
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Memory channel selection ............ 62
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Programming a memory ............... 63
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Memory clearing ........................... 63
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Selecting the call channel ............. 64
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Programming the call channel ...... 64
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Frequency transferring ................. 65
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Programming scan edges ............ 66
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Assigning memory names ............ 67
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Memo pads ................................... 68
8 SCANS ................................. 69 – 74
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Scan types .................................... 69
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Preparation ................................... 69
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Voice squelch control function ...... 70
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Scan set mode ............................. 70
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Programmed scan/Fine programmed
scan .............................................. 71
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Memory scan operation ................ 72
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Select memory scan ..................... 72
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∂
F scan operation and Fine
∂
F scan
...................................................... 73
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Tone scan/DTCS code scan
operation ...................................... 74
9 ANTENNA TUNER OPERATION
............................................ 75–77
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Antenna connection and selection 75
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Antenna tuner operation ............... 76
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Optional external tuner operation . 77
10 DATA COMMUNICATION ..... 78 – 80
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Connections ................................. 78
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Packet (AFSK) operation .............. 79
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Adjusting the TNC output level ..... 80
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Data transmission speed .............. 80
11 SET MODE ............................ 81–89
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General set mode ......................... 81
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Tone control set mode .................. 89
12 OPTION INSTALLATION ..... 90 – 91
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Opening the transceiver’s case .... 90
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UT-102
VOICE SYNTHESIZER UNIT
... 90
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CR-338
HIGH STABILITY CRYSTAL UNIT
..................................................... 91
13 MAINTENANCE .................... 92–94
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Trouble shooting ........................... 92
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Fuse replacement ......................... 93
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Tuning dial brake adjustment ....... 93
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Resetting the CPU ........................ 94
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Frequency calibration (approximate)
..................................................... 94
14 CONTROL COMMAND ......... 95–99
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Remote jack (CI-V) information .... 95
15 SPECIFICATIONS ...................... 100
16 OPTIONS.................................... 101
Icom, Icom Inc. and the
logo are registered trademarks of Icom Incorporated (Japan) in the United States, the United King-
dom, Germany, France, Spain, Russia and/or other countries.
2001 NEW
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Summary of Contents for i746PRO
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