ii
SUPPLIED ACCESSORIES
The transceiver comes with the following accessories.
Qty.
q
DC power cable (OPC-025D) ............................ 1
w
Hand microphone (HM-36) ................................ 1
e
Spare fuses (FGB 30 A) .................................... 2
r
Spare fuse (FGB 5 A) ........................................ 1
t
CW keyer plug (AP-330) .................................... 1
TABLE OF CONTENTS
q
w
e
r
t
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
■
Front panel ..................................... 1
■
Rear panel ...................................... 7
■
LCD display .................................... 9
■
Multi function switches .................. 11
■
Microphone (HM-36) .................... 12
2 INSTALLATION AND
CONNECTIONS ................... 13 – 17
■
Unpacking .................................... 13
■
Selecting a location ...................... 13
■
Grounding ..................................... 13
■
Antenna connection ...................... 13
■
Required connections ................... 14
■
Advanced connections ................. 15
■
Power supply connections ............ 16
■
Linear amplifier connections ......... 17
■
External antenna tuner
connections .................................. 17
3 BASIC OPERATION ............. 18 – 25
■
When first applying power
(CPU resetting) ............................. 18
■
Initial settings ................................ 18
■
Selecting an operating band ........ 19
■
Selecting VFO/memory mode ...... 20
■
VFO operation .............................. 20
■
Frequency setting ......................... 21
■
Operating mode selection ............ 23
■
Volume setting .............................. 23
■
Squelch and receive (RF)
sensitivity ...................................... 24
■
Basic transmit operation ............... 25
4 RECEIVE AND TRANSMIT .. 26 – 46
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Operating SSB ............................. 26
■
Operating CW ............................... 27
■
Electronic keyer functions ............ 29
■
Operating RTTY (FSK) ................. 35
■
RTTY functions ............................. 36
■
Operating AM ............................... 40
■
Operating FM ............................... 41
■
Repeater operation ....................... 44
5 FUNCTIONS FOR RECEIVE
........................................... 47 – 54
■
Simple band scope ....................... 47
■
Preamp/Attenuator ....................... 48
■
RIT function .................................. 48
■
AGC function ................................ 49
■
IF filter selection ........................... 50
■
IF (DSP) filter shape ..................... 51
■
Noise blanker ............................... 51
■
Meter peak hold function .............. 51
■
Twin PBT operation ...................... 52
■
Noise reduction ............................ 53
■
Notch function .............................. 53
■
Dial lock function .......................... 53
■
Voice squelch control function ...... 54
6 FUNCTIONS FOR TRANSMIT
........................................... 55 – 61
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VOX function ................................ 55
■
Break-in function .......................... 56
■
∂
TX function ................................ 57
■
Monitor function ............................ 57
■
Speech compressor ..................... 58
■
Transmit filter width selection ....... 58
■
Split frequency operation .............. 59
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Quick split function ....................... 60
■
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
■
Assigning memory names ............ 67
■
Memo pads ................................... 68
8 SCANS ................................. 69 – 74
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Scan types .................................... 69
■
Preparation ................................... 69
■
Voice squelch control function ...... 70
■
Scan set mode ............................. 70
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Programmed scan/Fine programmed
scan .............................................. 71
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Memory scan operation ................ 72
■
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
■
Antenna tuner operation ............... 76
■
Optional external tuner operation . 77
10 DATA COMMUNICATION ..... 78 – 80
■
Connections ................................. 78
■
Packet (AFSK) operation .............. 79
■
Adjusting the TNC output level ..... 80
■
Data transmission speed .............. 80
11 SET MODE ............................ 81–89
■
General set mode ......................... 81
■
Tone control set mode .................. 89
12 OPTION INSTALLATION ..... 90 – 91
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Opening the transceiver’s case .... 90
■
UT-102
VOICE SYNTHESIZER UNIT
... 90
■
CR-338
HIGH STABILITY CRYSTAL UNIT
..................................................... 91
13 MAINTENANCE .................... 92–94
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Trouble shooting ........................... 92
■
Fuse replacement ......................... 93
■
Tuning dial brake adjustment ....... 93
■
Resetting the CPU ........................ 94
■
Frequency calibration (approximate)
..................................................... 94
14 CONTROL COMMAND ......... 95–99
■
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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