ic-756PROIII_manual.pdf

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INSTRUCTION MANUAL
HF/50 MHz
ALL MODE TRANSCEIVER
This device complies with Part 15 of the FCC rules. Operation is sub-
ject to the following two conditions: (1) This device may not cause
harmful interference, and (2) this device must accept any interference
received, including interference that may cause undesired operation.
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IMPORTANT
EXPLICIT DEFINITIONS
READ THIS INSTRUCTION MANUAL
CAREFULLY before attempting to operate the
transceiver.
WORD
DEFINITION
Personal injury, fire hazard or electric
shock may occur.
R WARNING
SAVE THIS INSTRUCTION MANUAL. This
manual contains important safety and operating in-
structions for the IC-756PROIII.
CAUTION
Equipment damage may occur.
If disregarded, inconvenience only. No
risk or personal injury, fire or electric
shock.
NOTE
FOREWORD
SUPPLIED ACCESSORIES
We understand that you have a choice of many differ-
ent radios in the market place. We would like to take a
couple of moments of your time to thank you for mak-
ing your IC-756PROIII your radio of choice, and hope
you agree with Icom’s philosophy of “technology first.”
Many hours of research and development went into
the design of your IC-756PROIII.
The transceiver comes with the following acces-
sories.
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
D FEATURES
❍
+30 dBm class IP3 (at 14 MHz band) and
further improved 3rd order IMD character-
istics
q
w
e
r
❍
Real time spectrum scope with mini-scope
function
❍
Boudot RTTY demodulator and RTTY
transmit message memory
t
❍
Selectable SSB transmission passband
width (Each for Higher and lower pass fre-
quency)
❍
Digital IF filter allows you to select 51 types
of filter shapes while receiving a station
Spurious may be received near the following frequencies.
These are made in the internal circuit and does not indicate a
transceiver malfunction:
6.144 MHz, 8.000 MHz,
12.288 MHz, 12.890 MHz (when spectrum scope is ON),
18.433 MHz, 24.573 MHz, 52 MHz
Icom, Icom Inc. and the are registered trademarks of
Icom Incorporated (Japan) in the United States, the United
Kingdom, Germany, France, Spain, Russia and/or other
countries.
i
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PRECAUTIONS
AVOID using or placing the transceiver in areas with
temperatures below –10°C (+14°F) or above +50°C
(+122°F). Be aware that temperatures on a vehicle’s
dashboard can exceed 80°C (+176°F), resulting in per-
manent damage to the transceiver if left there for ex-
tended periods.
R WARNING RF EXPOSURE! This device
emits Radio Frequency (RF) energy. Extreme caution
should be observed when operating this device. If you
have any questions regarding RF exposure and safety
standards please refer to the Federal Communications
Commission Office of Engineering and Technology’s
report on Evaluating Compliance with FCC Guidelines
for Human Radio Frequency Electromagnetic Fields
(OET Bulletin 65).
AVOID placing the transceiver in excessively dusty en-
vironments or in direct sunlight.
AVOID placing the transceiver against walls or putting
anything on top of the transceiver. This will obstruct
heat dissipation.
R WARNING HIGH VOLTAGE! NEVER at-
tach an antenna or internal antenna connector during
transmission. This may result in an electrical shock or
burn.
Place unit in a secure place to avoid inadvertent use
by children.
R WARNING! NEVER operate the transceiver
with a headset or other audio accessories at high vol-
ume levels. Hearing experts advise against continuous
high volume operation. If you experience a ringing in
your ears, reduce the volume or discontinue use.
During mobile operation, DO NOT operate the trans-
ceiver without running the vehicle’s engine. When
transceiver power is ON and your vehicle’s engine is
OFF, the vehicle’s battery will soon become ex-
hausted.
R CAUTION! NEVER change the internal settings
of the transceiver. This result in reduced transceiver
performance and/or damage to the transceiver.
Make sure the transceiver power is OFF before start-
ing the vehicle. This will avoid possible damage to the
transceiver by ignition voltage spikes.
In particular, incorrect settings for transmitter circuits,
such as output power, idling current, etc., might dam-
age the expensive final devices.
During maritime mobile operation, keep the transceiver
and microphone as far away as possible from the mag-
netic navigation compass to prevent erroneous indica-
tions.
The transceiver warranty does not cover any problems
caused by unauthorized internal adjustment.
BE CAREFUL! The heatsink will become hot when op-
erating the transceiver continuously for long periods.
R NEVER apply AC to the [DC13.8V] jack on the
transceiver rear panel. This could cause a fire or ruin
the transceiver.
BE CAREFUL! If a linear amplifier is connected, set
the transceiver’s RF output power to less than the lin-
ear amplifier’s maximum input level, otherwise, the lin-
ear amplifier will be damaged.
R NEVER apply more than 16 V DC, such as a 24 V
battery, to the [DC13.8V] jack on the transceiver rear
panel. This could cause a fire or ruin the transceiver.
The LCD display may have cosmetic imperfections
that appear as small or dark spots. This is not a mal-
function or defect, but a normal characteristic of LCD
displays.
R NEVER let metal, wire or other objects touch any
internal part or connectors on the rear panel of the
transceiver. This may result in an electric shock.
R NEVER expose the transceiver to rain, snow or
any liquids.
Use Icom microphones only (supplied or optional).
Other manufacturer’s microphones have different pin
assignments, and connection to the IC-756PROIII may
damage the transceiver.
R NEVER installing the transceiver in a place with-
out adequate ventilation. Heat dissipation may be af-
fected, and the transceiver may be damaged.
For U.S.A. only
CAUTION: Changes or modifications to this device,
not expressly approved by Icom Inc., could void your
authority to operate this device under FCC regulations.
R NEVER operate or touch the transceiver with wet
hands. This may result in an electric shock or damage
to the transceiver.
ii
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TABLE OF CONTENTS
IMPORTANT .................................................................. i
FOREWORD ................................................................. i
EXPLICIT DEFINITIONS ............................................... i
SUPPLIED ACCESSORIES .......................................... i
PRECAUTIONS ............................................................ ii
TABLE OF CONTENTS .............................................. iii
4
RECEIVE AND TRANSMIT ............................ 33 – 54
■
Operating SSB ............................................... 33
D Convenient functions for receive ................. 33
D Convenient functions for transmit ................ 34
D About 5 MHz band operation
(USA version only) ....................................... 34
■
Operating CW ................................................ 35
D Convenient functions for receive ................. 35
D Convenient functions for transmit ................ 36
D About CW reverse mode ............................. 36
D CW side tone function ................................. 36
D About CW pitch control ................................ 37
1PANEL DESCRIPTION ..................................... 1 – 12
■
Front panel ....................................................... 1
■
LCD display ..................................................... 9
■
Screen menu arrangement ............................ 10
■
Rear panel ...................................................... 11
■
Electronic CW keyer ...................................... 38
D Memory keyer send screen ......................... 39
D Editing a memory keyer ............................... 40
D Contest number set mode ........................... 41
D Keyer set mode ........................................... 42
■
Microphone (HM-36) ...................................... 12
2
INSTALLATION AND CONNECTIONS .......... 13 – 20
■
Unpacking ...................................................... 13
■
Operating RTTY (FSK) .................................. 44
D Convenient functions for receive ................. 44
D About RTTY reverse mode .......................... 45
D RTTY filter/Twin peak filter........................... 45
D Functions for the RTTY decoder indication . 46
D Setting the decoder threshold level ............. 46
D RTTY memory transmission ........................ 47
D RTTY tuning meter ...................................... 47
D Editing RTTY memory ................................. 48
D RTTY decoder set mode.............................. 49
■
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 .................................................... 18
■
Transverter jack information .......................... 18
■
Operating AM ................................................. 50
D Convenient functions for receive ................. 50
D Convenient functions for transmit ................ 50
■
Microphone connector information ................ 18
■
FSK and AFSK (SSTV)
connections .................................................... 19
■
Operating FM ................................................. 51
D Convenient functions for receive ................. 51
D Convenient functions for transmit ................ 51
■
Accessory connector information ................... 20
■
Repeater operation ........................................ 52
D Setting the repeater tone ............................. 52
3
BASIC OPERATION ....................................... 21 – 32
■
When first applying power
(CPU resetting) .............................................. 21
■
Tone squelch operation .................................. 53
■
Data mode (SSTV/PSK31) operation ............ 54
■
Initial settings ................................................. 21
■
VFO description ............................................. 22
■
Selecting VFO/memory mode ........................ 23
5
FUNCTION FOR RECEIVE ............................ 55 – 65
■
■
Main/Sub band selection ............................... 23
Spectrum scope screen ................................. 55
D Mini scope screen........................................ 55
D Scope set mode........................................... 56
■
Selecting an operating band .......................... 24
D Using the band stacking registers ............... 24
■
Frequency setting .......................................... 25
D Tuning with the tuning dial ........................... 25
D Direct frequency entry with the keypad ....... 25
D Quick tuning step ......................................... 26
D Selecting “kHz” step .................................... 26
D Selecting 1 Hz step...................................... 27
D 1 ⁄ 4 tuning function
(SSB data/CW/RTTY only) .......................... 27
D Auto tuning step function ............................. 28
D Band edge warning beep............................. 28
■
Preamplifier .................................................... 57
■
Attenuator ...................................................... 57
■
RIT function .................................................... 58
■
AGC function .................................................. 59
■
Twin PBT operation ........................................ 60
■
IF filter selection ............................................. 61
■
DSP filter shape .............................................. 62
■
Dualwatch operation ...................................... 63
■
Noise blanker ................................................. 64
■
Notch function ................................................ 64
■
Operating mode selection .............................. 29
■
Noise reduction .............................................. 65
■
Volume setting ............................................... 29
■
Dial lock function ............................................ 65
■
Squelch and receive (RF) sensitivity ............. 30
■
Meter function ................................................ 31
■
SWR reading ................................................. 31
■
Basic transmit operation ................................ 32
D Transmitting ................................................. 32
D Microphone gain adjustment ....................... 32
iii
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TABLE OF CONTENTS
6
FUNCTION FOR TRANSMIT ......................... 66 – 72
■
12 SET MODE ................................................... 94 – 104
■
1
VOX function .................................................. 66
D Using the VOX function ............................... 66
D Adjusting the VOX function.......................... 66
Set mode description ..................................... 94
■
Level set mode .............................................. 95
■
Display set mode ........................................... 97
2
■
Break-in function ............................................ 67
D Semi break-in operation .............................. 67
D Full break-in operation ................................. 67
■
DSP filter set mode ......................................... 99
■
Miscellaneous (others) set mode ................... 99
3
■
Transmit filter width setting (SSB only) .......... 68
13 OPTION INSTALLATION .................................... 105
■
■
Speech compressor ....................................... 68
4
Opening the transceiver’s case ................... 105
■
∂TX function .................................................. 69
■
UT-102 VOICE SYNTHESIZER UNIT .................. 105
■
Monitor function ............................................. 70
5
■
Split frequency operation ............................... 71
■
Quick split function ......................................... 72
14 INTERNAL VIEWS .............................................. 106
6
7
VOICE RECORDER FUNCTIONS ................. 73 – 76
■
15 MAINTENANCE ......................................... 107 – 109
■
Digital voice recorder ..................................... 73
7
Troubleshooting ........................................... 107
■
Fuse replacement ........................................ 108
■
Clock backup battery
replacement ................................................. 108
8
8
MEMORY OPERATION .................................. 77 – 82
■
Memory channels .......................................... 77
■
Tuning dial brake adjustment ....................... 109
■
Memory channel selection ............................. 77
9
■
Frequency calibration
(approximate)................................................ 109
■
Memory channel screen ................................ 78
■
Memory channel programming ...................... 79
■
Frequency transferring ................................... 80
10
■
Memory names .............................................. 81
16 CONTROL COMMAND ............................... 110– 114
■
■
Memory clearing ............................................ 81
Remote jack (CI-V) information .................... 110
11
■
Memo pads .................................................... 82
17 SPECIFICATIONS ............................................... 115
12
9
SCANS ........................................................... 83 – 87
■
Scan types ..................................................... 83
■
Preparation .................................................... 83
13
18 OPTIONS ............................................................. 116
■
Programmed scan operation ......................... 84
■
∂F scan operation ......................................... 84
14
■
Fine programmed scan/
fine ∂F scan ................................................... 85
19 ABOUT CE ........................................................... 117
■
Memory scan operation ................................. 85
15
■
Select memory scan operation ...................... 86
■
Setting select memory channels .................... 86
16
■
Scan set mode ............................................... 87
■
Tone scan ....................................................... 87
17
10 ANTENNA TUNER OPERATION ................... 88 – 90
■
Automatic antenna selection .......................... 88
18
■
Antenna tuner operation ................................ 89
■
Optional external tuner operation .................. 90
19
11 CLOCK AND TIMERS .................................... 91 – 93
■
Time set mode ............................................... 91
D Setting the current time ............................... 92
D Clock2 function activity ................................ 92
D Clock2 offset setting .................................... 92
D Timer function activity .................................. 92
D Setting power-on time.................................. 93
D Setting power-off period............................... 93
D Timer operation............................................ 93
iv
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