ICOM orporated 217800 HF/50 MHz All Mode Transceiver User Manual

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Document ID	467148
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Document Description	Users Manual
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Document Type	User Manual
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Date Submitted	2004-09-09 00:00:00
Date Available	2004-09-09 00:00:00
Creation Date	2004-07-23 02:13:07
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Document Lastmod	2004-09-01 16:31:40
Document Title	Users Manual

INSTRUCTION MANUAL
HF/50 MHz
ALL MODE TRANSCEIVER
This device complies with Part 15 of the FCC rules. Operation is subject 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.
IMPORTANT
READ THIS INSTRUCTION MANUAL
CAREFULLY before attempting to operate the
transceiver.
EXPLICIT DEFINITIONS
WORD
DEFINITION
R WARNING
Personal injury, fire hazard or electric
shock may occur.
SAVE THIS INSTRUCTION MANUAL. This
CAUTION
manual contains important safety and operating instructions for the IC-756PROIII.
NOTE
FOREWORD
We understand that you have a choice of many different radios in the market place. We would like to take a
couple of moments of your time to thank you for making 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.
Equipment damage may occur.
If disregarded, inconvenience only. No
risk or personal injury, fire or electric
shock.
D FEATURES
❍ Ultimate receiver performance +30 dBm of
IP3 characteristics (HF bands only)
❍ Built-in Baudot RTTY demodulator
❍ Up-graded real-time spectrum scope, and
mini-scope indications
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
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.
PRECAUTIONS
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).
R WARNING HIGH VOLTAGE! NEVER attach an antenna or internal antenna connector during
transmission. This may result in an electrical shock or
burn.
RWARNING! NEVER operate the transceiver
with a headset or other audio accessories at high volume levels. Hearing experts advise against continuous
high volume operation. If you experience a ringing in
your ears, reduce the volume or discontinue use.
R CAUTION! NEVER change the internal settings
of the transceiver. This result in reduced transceiver
performance and/or damage to the transceiver.
In particular, incorrect settings for transmitter circuits,
such as output power, idling current, etc., might damage the expensive final devices.
The transceiver warranty does not cover any problems
caused by unauthorized internal adjustment.
R NEVER apply AC to the [DC13.8V] jack on the
transceiver rear panel. This could cause a fire or ruin
the transceiver.
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.
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.
R NEVER installing the transceiver in a place without adequate ventilation. Heat dissipation may be affected, and the transceiver may be damaged.
R NEVER operate or touch the transceiver with wet
hands. This may result in an electric shock or damage
the transceiver.
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 permanent damage to the transceiver if left there for extended periods.
AVOID placing the transceiver in excessively dusty environments or in direct sunlight.
AVOID placing the transceiver against walls or putting
anything on top of the transceiver. This will obstruct
heat dissipation.
Place unit in a secure place to avoid inadvertent use
by children.
During mobile operation, DO NOT operate the transceiver 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 exhausted.
Make sure the transceiver power is OFF before starting the vehicle. This will avoid possible damage to the
transceiver by ignition voltage spikes.
During maritime mobile operation, keep the transceiver
and microphone as far away as possible from the magnetic navigation compass to prevent erroneous indications.
BE CAREFUL! The heatsink will become hot when operating the transceiver continuously for long periods.
BE CAREFUL! If a linear amplifier is connected, set
the transceiver’s RF output power to less than the linear amplifier’s maximum input level, otherwise, the linear amplifier will be damaged.
The LCD display may have cosmetic imperfections
that appear as small or dark spots. This is not a malfunction or defect, but a normal characteristic of LCD
displays.
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.
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.
ii
TABLE OF CONTENTS
IMPORTANT .................................................................. i
EXPLICIT DEFINITIONS ............................................... i
FOREWORD ................................................................. i
SUPPLIED ACCESSORIES .......................................... i
PRECAUTIONS ............................................................ ii
TABLE OF CONTENTS .............................................. iii
1 PANEL DESCRIPTION ..................................... 1 – 12
■ Front panel ....................................................... 1
■ LCD display ..................................................... 9
■ Screen menu arrangement ............................ 10
■ Rear panel ...................................................... 11
■ Microphone (HM-36) ...................................... 12
2 INSTALLATION AND CONNECTIONS .......... 13 – 20
■ 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 .................................................... 18
■ Transverter jack information .......................... 18
■ Microphone connector information ................ 18
■ FSK and AFSK (SSTV)
connections .................................................... 19
■ Accessory connector information ................... 20
3 BASIC OPERATION ....................................... 21 – 32
■ When first applying power
(CPU resetting) .............................................. 21
■ Initial settings ................................................. 21
■ VFO description ............................................. 22
■ Selecting VFO/memory mode ........................ 23
■ Main/Sub band selection ............................... 23
■ Selecting an operating band .......................... 24
■ Frequency setting .......................................... 25
■ Operating mode selection .............................. 29
■ Volume setting ............................................... 29
■ Squelch and receive (RF) sensitivity ............. 30
■ Meter function ................................................ 31
■ SWR reading ................................................. 31
■ Basic transmit operation ................................ 32
4 RECEIVE AND TRANSMIT ............................ 33 – 54
■ Operating SSB ............................................... 33
■ Operating CW ................................................ 35
■ Electronic CW keyer ...................................... 38
■ Operating RTTY (FSK) .................................. 44
■ Operating AM ................................................. 50
■ Operating FM ................................................. 51
■ Repeater operation ........................................ 52
■ Tone squelch operation .................................. 53
■ Data mode (SSTV/PSK31) operation ............ 54
iii
5 FUNCTION FOR RECEIVE ............................ 55 – 64
■ Spectrum scope screen ................................. 55
■ Preamp .......................................................... 57
■ Attenuator ...................................................... 57
■ RIT function .................................................... 58
■ AGC function .................................................. 59
■ Twin PBT operation ........................................ 60
■ IF filter selection ............................................. 61
■ DSP filter shape .............................................. 62
■ Noise blanker ................................................. 62
■ Dualwatch operation ...................................... 63
■ Notch function ................................................ 64
■ Noise reduction .............................................. 64
■ Dial lock function ............................................ 64
6 FUNCTION FOR TRANSMIT ......................... 65 – 71
■ VOX function .................................................. 65
■ Break-in function ............................................ 66
■ Transmit filter width setting (SSB only) .......... 67
■ Speech compressor ....................................... 67
■ ∂TX function .................................................. 68
■ Monitor function ............................................. 69
■ Split frequency operation ............................... 70
■ Quick split function ......................................... 71
7 VOICE RECODER FUNCTIONS .................... 72 – 75
■ Digital voice recorder ..................................... 72
8 MEMORY OPERATION .................................. 76 – 75
■ Memory channels .......................................... 76
■ Memory channel selection ............................. 76
■ Memory channel screen ................................ 77
■ Memory channel programming ...................... 78
■ Frequency transferring ................................... 79
■ Memory names .............................................. 80
■ Memory clearing ............................................ 80
■ Memo pads .................................................... 81
9 SCANS ........................................................... 82 – 86
■ Scan types ..................................................... 82
■ Preparation .................................................... 82
■ Programmed scan operation ......................... 83
■ ∂F scan operation ......................................... 83
■ Fine programmed scan/
fine ∂F scan ................................................... 84
■ Memory scan operation ................................. 84
■ Select memory scan operation ...................... 85
■ Setting select memory channels .................... 85
■ Scan set mode ............................................... 86
■ Tone scan ....................................................... 86
10 ANTENNA TUNER FUNCTIONS ................... 87 – 89
■ Automatic antenna selection .......................... 87
■ Antenna tuner operation ................................ 88
■ Optional external tuner operation .................. 89
TABLE OF CONTENTS
11 CLOCK AND TIMERS .................................... 90 – 91
■ Setting the current time .................................. 90
■ Timer function activity ..................................... 90
■ Setting power-on time .................................... 91
■ Setting power-off period ................................. 91
■ Timer operation .............................................. 91
12 SET MODE ................................................... 92 – 103
■ Set mode description ..................................... 92
■ Level set mode .............................................. 93
■ Display set mode ........................................... 95
■ DSP filter set mode ......................................... 96
■ Timer set mode .............................................. 97
■ Miscellaneous (others) set mode ................... 98
13 OPTION INSTALLATION .................................... 104
■ Opening the transceiver’s case ................... 104
■ UT-102 VOICE SYNTHESIZER UNIT .................. 104
14 MAINTENANCE ......................................... 105 – 107
■ Troubleshooting ........................................... 105
■ Fuse replacement ........................................ 106
■ Clock backup battery
replacement ................................................. 106
■ Tuning dial brake adjustment ....................... 107
■ Frequency calibration
(approximate)................................................ 107
15 INTERNAL VIEWS .............................................. 108
16 CONTROL COMMAND ............................... 109– 112
■ Remote jack (CI-V) information ................... 109
17 SPECIFICATIONS ............................................... 113
10
18 OPTIONS ............................................................. 114
11
19 ABOUT CE ........................................................... 115
12
13
14
15
16
17
18
19
iv
1
PANEL DESCRIPTION
■ Front panel
!2
!0
HF/50MHz TRANSCEIVER
TIMER
!1
POWER
TRANSMIT
PHONES
TUNER MONITOR
NB
NR
ELEC-KEY
AF
RF/SQL
BAL
NR
MIC
MIC GAIN RF POWER
F-1
F-2
F-3
F-4
F-5
SSB
CW/RTTY
AM/FM
FILTER
EXIT/SET
COMP BK-IN DELAY KEY SPEED
y u io
q POWER SWITCH [POWER/TIMER]
➥ While transceiver’s power is OFF:
Push to turn power ON.
• Turn the optional DC power supply ON in advance.
• A/D converter calibration of the DSP unit starts and it
takes approx. 10 sec.
➥ While transceiver’s power is ON:
❍ Push momentarily to toggle the timer function
ON and OFF. (p. 91)
•The [TIMER] indicator in this switch lights while the
timer function is ON.
❍ Push for 1 sec. to turn power OFF.
w TRANSMIT SWITCH [TRANSMIT]
Selects transmitting or receiving.
• The [TX] indicator lights red while transmitting and the
[RX] indicator lights green when the squelch is open.
e HEADPHONE JACK [PHONES]
Accepts headphones.
• Output power: 5 mW with an 8 Ω load.
• When headphones are connected, the internal speaker
or connected external speaker does not function.
r ELECTRONIC KEYER JACK [ELEC-KEY]
Accepts a paddle to activate the internal electronic
keyer for CW operation. (p. 38)
• Selection between the internal electronic keyer, bug-key
and straight key operation can be made in keyer set
mode. (p. 43)
• A straight key jack is separately available on the rear
panel. See [KEY] on p. 11.
• Keyer polarity (dot and dash) can be reversed in keyer
set mode. (p. 43)
• 4-channel memory keyer is available for your convenience. (p. 40)
(dot)
(com)
(dash)
t MICROPHONE CONNECTOR [MIC]
Accepts the supplied or optional microphone.
• See p. 114 for appropriate microphones.
• See p. 18 for microphone connector information.
y AF CONTROL [AF] (inner control)
Varies the audio output level from the speaker.
AF
RF/SQL
Decreases
Increases
No audio output
Max. audio output
u MIC GAIN CONTROL [MIC GAIN]
Adjusts microphone input gain.
• The transmit audio tone in SSB mode can be adjusted in
set mode. (p. 93)
✔ How to set the microphone gain.
Set the [MIC] control so that the ALC meter sometimes
swings during normal voice transmission in SSB mode.
Recommended level for
an Icom microphone
Decreases
Increases
MIC GAIN
PANEL DESCRIPTION
i RF GAIN CONTROL/SQUELCH CONTROL
[RF/SQL] (outer control)
Adjusts the RF gain and squelch threshold level.
The squelch removes noise output from the
speaker (closed condition) when no signal is received.
• The squelch is particularly effective for FM. It is also
available for other modes.
• 12 to 1 o’clock position is recommended for any setting
of the [RF/SQL] control.
• The control can be set as ‘Auto’ (RF gain control in SSB,
CW and RTTY; squelch control in AM and FM) or
squelch control (RF gain is fixed at maximum) in set
mode as follows. (p. 98)
SET MODE SETTING
AUTO
SQL
RF GAIN + SQL
MODE
SSB, CW
RTTY
AM, FM
RF GAIN
SQL
RF GAIN + SQL
SQL
SQL
RF GAIN + SQL
• When setting as RF gain/squelch control
Noise squelch (FM mode)
Recommended level
Squelch is
open.
Maximum
RF gain
RF gain
adjustable
range
S-meter
squelch
o RF POWER CONTROL [RF POWER]
Continuously varies the RF output power from minimum (5 W*) to maximum (100 W*).
* AM mode: 5 W to 40 W
Decreases
Increases
RF POWER
!0 S/RF METER (p. 31)
Shows the signal strength while receiving. Shows
the relative output power, SWR, ALC or compression levels while transmitting.
!1 MONITOR SWITCH [MONITOR] (p. 69)
Monitors your transmitted IF signal.
• The CW sidetone functions regardless of the [MONITOR] switch setting in CW mode.
• The [MONITOR] indicator in this switch lights green
when the function is activated.
!2 ANTENNA TUNER SWITCH [TUNER] (p. 88)
➥ Turns the internal antenna tuner ON and OFF
(bypass) when pushed momentarily.
➥ Tunes the antenna manually when pushed for 1
sec.
• The [TUNER] indicator in this switch lights red when
the function is activated or blinks during manual tuning.
• When the tuner cannot tune the antenna, the tuning
circuit is bypassed automatically after 20 sec.
• When functioning as RF gain control
(Squelch is fixed open; SSB, CW, RTTY only)
Maximum
RF gain
Adjustable
range
Minimum RF gain
• When functioning as squelch control
(RF gain is fixed at maximum.)
Noise squelch
threshold
(FM mode)
Noise squelch (FM mode)
Squelch is
open.
Shallow
S-meter squelch
threshold
S-meter
squelch
Deep
While rotating the RF gain control, noise may be
heard. This comes from the DSP unit and does not
indicate an equipment malfunction.
1
PANEL DESCRIPTION
■ Front panel (continued)
@0 !9 !8 !7 !6
HF/50MHz TRANSCEIVER
TIMER
POWER
TRANSMIT
PHONES
ELEC-KEY
TUNER MONITOR
AF
RF/SQL
NB
BAL
NR
NR
MIC
MIC GAIN RF POWER
!4
BK-IN DELAY
F-4
F-5
AM/FM
FILTER
EXIT/SET
ANT
Compression
level increases
!4 SEMI BREAK-IN DELAY CONTROL
[BK-IN DELAY]
Adjusts the transmit-to-receive switching delay time
for CW semi break-in operation.
Short delay for
high speed keying
(2 dot)
F-3
CW/RTTY
!5
!3 COMPRESSION LEVEL CONTROL [COMP]
(p. 67)
Adjusts the speech compression level in SSB.
COMP
F-2
SSB
COMP BK-IN DELAY KEY SPEED
!3
Compression
level decreases
F-1
• When the receive antenna is activated, the
antenna which is connected to the [ANT1] or
[ANT2] is used for transmission only.
When a transverter is in use, this [ANT]
does not function and ‘XVERT’ appears.
METER
Po
Long delay for
slow speed keying
(13 dot)
!5 ELECTRONIC CW KEYER SPEED CONTROL
[KEY SPEED] (p. 35)
Adjusts the internal electronic CW keyer’s speed.
P.AMP
OFF
Fast
KEY SPEED
!6 MULTI-FUNCTION SWITCHES
Push to select the functions indicated in the LCD
display to the right of these switches.
• Functions vary depending on the operating condition.
➥ Selects RF power (Po), SWR, ALC or
COMP metering during transmit. (p. 31)
➥ Switches the multi-function digital meter
ON and OFF when pushed for 1 sec.
➥ Selects one of 2 receive RF preamps or
bypasses them. (p. 57)
• “P. AMP1” activates 10 dB preamp.
• “P. AMP2” activates 16 dB high-gain preamp.
• 6 wpm (min.) to 60 wpm (max.) can be set.
Slow
➥ Selects the antenna connector between
ANT1 and ANT2 when pushed. (p. 87)
➥ Turns the [RX ANT] (receive antenna) ON
and OFF when pushed for 1 sec.
✔ What is the preamp?
The preamp amplifies received signals in the front end circuit to improve the S/N ratio and sensitivity. Select “P. AMP1”
or “P. AMP2” when receiving weak signals.
ATT
OFF
➥ Selects 6 dB, 12 dB or 18 dB attenuator,
or bypasses them.
✔ What is the attenuator?
The attenuator prevents a desired signal from distorting
when very strong signals are near the desired frequency, or
when very strong electric fields, such as from a broadcasting station, are near your location.
PANEL DESCRIPTION
AGC
MID
➥ Activates or selects fast, middle or slow
AGC time constant when pushed. (p. 59)
1/4
OFF
• “FAST” is only available for FM mode.
➥ Turns the 1⁄4 function ON and OFF in
SSB data, CW and RTTY modes. (p. 27)
• 1⁄4 function sets dial rotation to 1⁄4 of normal
for fine tuning.
➥ Enters the AGC set mode when pushed
for 1 sec. (p. 59)
AGC time constant can be set between 0.1 to
8.0 sec. (depends on mode), or turned OFF. While
“OFF” is selected, the S-meter does not function.
TONE
OFF
✔ What is the AGC?
➥ Switches the tone encoder, tone squelch
function and no tone operation when
pushed in FM mode. (pgs. 52, 53
➥ Enters the tone set mode when pushed
for 1 sec. in FM mode. (pgs. 52, 53)
The AGC controls receiver gain to produce a constant audio
output level, even when the received signal strength is varied
by fading, etc. Select “FAST” for tuning and select “MID” or
“SLOW” depending on the receiving condition.
!7 NOISE REDUCTION LEVEL CONTROL [NR]
(outer control; p. 64)
Adjusts the noise reduction level when the noise reduction is in use. Set for maximum readability.
➥ Turns the VOX function ON and OFF
when pushed in a phone mode (SSB, AM
or FM mode). (p. 65)
➥ Enters the VOX set mode when pushed
for 1 sec. in a phone mode. (p. 65)
• To activate this control, turn the noise reduction ON in
advance (!8).
VOX
OFF
BAL
The VOX function (voice operated transmission) starts transmission without pushing the transmit switch or PTT switch
when you speak into the microphone; then, automatically returns to receive when you stop speaking.
BK-IN
OFF
➥ Selects semi break-in, full break-in operation, or turns the break-in operation
OFF when pushed in CW mode. (p. 66)
✔ What is the break-in function?
The break-in function switches transmit and receive with CW
keying. Full break-in (QSK) can monitor the receive signal
during keying.
RTTY
FIL
OFF
➥ Turns the RTTY filter ON and OFF in
RTTY mode. (p. 45)
• When the RTTY filter is turned ON, [TWIN
PBT] functions as the IF shift control.
➥ Enters the RTTY filter set mode when
pushed for 1 sec. in RTTY mode. (p. 45)
✔ What is the IF shift?
The IF shift function electronically changes the center of the
IF (Intermediate Frequency) passband frequency to reject interference. Only the inner control of [TWIN PBT] can be used
for the IF shift control.
COMP
OFF
WIDE
➥ Turns the speech compressor ON and
OFF in SSB mode. (p. 67)
➥ Switches the narrow, middle or wide
transmit filter when pushed for 1 sec.
NR
Decreases
✔ What is the VOX function?
Increases
OFF
!8 NOISE REDUCTION SWITCH [NR] (p. 64)
Push to switch the noise reduction ON and OFF.
• The [NR] indicator in this switch lights green when the
function is activated.
NR
NR
Noise reduction OFF
Noise reduction ON
!9 NOISE BLANKER SWITCH [NB] (p. 62)
➥ Switches the noise blanker ON and OFF when
pushed. The noise blanker reduces pulse-type
noise such as that generated by automobile ignition systems. This function cannot be used for
FM, or non-pulse-type noise.
• The [NB] indicator in this switch lights green when the
function is activated.
NB
NB
Noise blanker OFF
Noise blanker ON
➥ Enters the noise blanker level set mode when
pushed for 1 sec.
@0 BALANCE CONTROL [BAL] (inner control; p. 63)
Adjusts the audio output balance between main and
sub readout frequencies while in dualwatch.
BAL
Increases main
readout gain
NR
Increases sub
readout gain
✔ What is the speech compressor?
The speech compressor compresses the transmitter audio
input to increase the average audio output level. Therefore,
talk power is increased. This function is effective for long distance communication or when propagation conditions are
poor.
1
PANEL DESCRIPTION
■ Front panel (continued)
#6
TWIN PBT
EIVER
SPLIT
1.8
3.5
DUAL
WATCH
10
14
18
21
24
28
MW
50
F-INP
ENT
CHANGE
PBT CLR
VFO/
MEMO
i7500
NB
M.SCOPE
GENE •
MP-W
MP-R
TS
NOTCH
CW PITCH
XFC
TX
NR
LOCK
RIT
TX
RIT/
F-1
F-2
F-3
F-4
F-5
SSB
CW/RTTY
AM/FM
FILTER
EXIT/SET
REC/PLAY
#5
#4
#3
#2
MAIN/
SUB
NR
RX
BAL
NOTCH
M-CL
CLEAR
TX
#1
#0
@9
LOCK/SPEECH
COMP BK-IN DELAY KEY SPEED
@1
@2
@3
@1 LCD FUNCTION SWITCHES [F-1]–[F-5]
Push to select the function indicated in the LCD display above these switches.
• Functions vary depending on the operating condition.
@2 MODE SWITCHES
Selects the desired mode. (p. 29)
• Announces the selected mode when an optional UT-102
is installed. (pgs. 101, 104)
SSB
CW/RTTY
AM/FM
➥ Selects USB and LSB mode alternately.
➥ Selects SSB data mode (USB-D, LSB-D)
when pushed for 1 sec. in SSB mode.
➥ Selects CW and RTTY mode alternately.
➥ Switches CW and CW-R (CW reverse)
mode when pushed for 1 sec. in CW
mode.
➥ Switches RTTY and RTTY-R (RTTY reverse) mode when pushed for 1 sec. in
RTTY mode.
➥ Selects AM and FM mode alternately.
➥ Selects AM/FM data mode (AM-D, FM-D)
when pushed for 1 sec. in AM or FM
mode.
@3 FILTER SWITCH [FILTER] (p. 61)
➥ Push to select one of 3 IF filter settings.
➥ Push for 1 sec. to enter the filter set mode.
@4 EXIT/SET SWITCH [EXIT/SET]
➥ Push to exit from a set mode, etc.
➥ Push for 1 sec. to enter the set mode screen.
(p. 92)
@4
@5
@6
@7
@8
@5 REC/PLAY SWITCH [REC/PLAY] (p. 72)
➥ Push momentarily to playback the recorded contents in the channel R4 of the voice memory.
➥ Push for 1 sec. to record the receiving signal contents into the channel R4 (max. 15 sec.) of the
voice memory.
@6 TUNING DIAL (p. 25)
Changes the displayed frequency, selects set mode
settings, etc.
@7 LOCK/SPEECH SWITCH [LOCK/SPEECH]
➥ Push momentarily to toggle the dial lock function
ON and OFF. (p. 64)
➥ Push for 1 sec. to announce the S-meter indication and the selected readout frequency when an
optional UT-102 is installed. (p. 104)
∂TX CONTROL [RIT/∂
∂TX] (pgs. 58, 68)
@8 RIT/∂
Shifts the receive and/or transmit frequency without
changing the transmit and/or receive frequency
while the RIT and/or ∂TX functions are ON.
• Rotate the control clockwise to increase the frequency,
or rotate the control counterclockwise to decrease the
frequency.
• The shift frequency range is ±9.999 kHz in 1 Hz steps
(or ±9.99 kHz in 10 Hz steps).
RIT/∂TX
Low shift
High shift
1
PANEL DESCRIPTION
@9 RIT SWITCH [RIT] (p. 58)
➥ Turns the RIT function ON and OFF when
pushed.
• Use the [RIT/∂TX] control to vary the RIT frequency.
➥ Adds the RIT shift frequency to the operating frequency when pushed for 1 sec.
✔ What is the RIT function?
#4 NOTCH SWITCH [NOTCH] (p. 64)
➥ Switches the notch function between auto, manual and OFF in SSB and AM modes.
➥ Turns the manual notch function ON and OFF
when pushed in CW mode.
➥ Turns the auto notch function ON and OFF when
pushed in FM mode.
• “AN” appears on the display when auto notch is in
use.
• “MN” appears on the display when manual notch is in
use.
• The [NOTCH] indicator in this switch lights green
when the function is activated.
The RIT (Receiver Incremental Tuning) shifts the receive frequency without shifting the transmit frequency.
This is useful for fine tuning stations calling you on an off-frequency or when you prefer to listen to slightly differentsounding voice characteristics, etc.
∂TX] (p. 68)
#0 ∂TX SWITCH [∂
➥ Turns the ∂TX function ON and OFF when
pushed.
• Use the [RIT/∂TX] control to vary the ∂TX frequency.
➥ Adds the ∂TX shift frequency to the operating
frequency when pushed for 1 sec.
✔ What is the ∂TX function?
The ∂TX shifts the transmit frequency without shifting the receive frequency. This is useful for simple split frequency operation in CW, etc.
#1 CLEAR SWITCH [CLEAR] (pgs. 58, 68)
Clears the RIT/∂TX shift frequency when pushed
for 1 sec. (default).
• The response time (for 1 sec. or momentarily) can be
selected on the quick RIT/∂TX clear setting (p. 102).
#2 MANUAL NOTCH FILTER CONTROL [NOTCH]
(inner control; p. 64)
Varies the peak frequency of the manual notch filter to pick out a receive signal from interference
while the manual notch function is ON.
• Notch filter center frequency:
SSB : 0 Hz to 5100 Hz
CW : CW pitch freq.–900 Hz to CW pitch freq.
+4200 Hz
AM : –5100 Hz to 5100 Hz
NOTCH
CW PITCH
Lower frequency
NOTCH
NOTCH
Notch OFF
Notch ON
✔ What is the notch function?
The notch function eliminates unwanted CW or AM carrier
tones while preserving the desired signal’s audio response.
The filtering frequency is adjusted to effectively eliminate unwanted tones via the DSP circuit.
#5 PBT CLEAR SWITCH [PBT CLR] (p. 60)
Clears the PBT settings when pushed for 1 sec.
• The [PBT CLR] indicator in this switch lights green when
PBT is in use.
#6 PASSBAND TUNING CONTROLS [TWIN PBT]
Adjust the receiver’s “passband width” of the DSP
filter. (p. 60)
• Passband width and shift frequency are displayed in the
LCD.
• Push [PBT CLR] for 1 sec. to clear the settings when not
in use.
• Variable range is set to half of the IF filter passband
width. 25 Hz steps and 50 Hz steps are available.
• These controls function as an IF shift control while in AM
mode and when the RTTY filter is turned ON. Only the
inner control may function in this case.
✔ What is the PBT control?
General PBT function electronically narrows the IF passband
width to reject interference. This transceiver uses the DSP
circuit for the PBT function.
Higher frequency
TWIN PBT
PBT1
PBT2
#3 CW PITCH CONTROL [CW PITCH]
(outer control; p. 36)
Shifts the received CW audio pitch and monitored
CW audio pitch without changing the operating frequency.
NOTCH
Lower frequency
Approx. 300 Hz
TWIN PBT
TWIN PBT
TWIN PBT
–
CW PITCH
Higher frequency
Approx. 900 Hz
Low cut
Center
High cut
1
PANEL DESCRIPTION
■ Front panel (continued)
%3
%2 %1 %0 $9 $8 $7
$5
$6
TWIN PBT
CEIVER
SPLIT
1.8
3.5
DUAL
WATCH
10
14
18
21
24
28
50
F-INP
ENT
CHANGE
$4
MW
PBT CLR
GENE
VFO/
MEMO
M.SCOPE
NB
MP-W
NOTCH
TS
CW PITCH
MAIN/
SUB
NR
RX
BAL
MP-R
NOTCH
M-CL
TX
NR
XFC
LOCK
RIT
TX
RIT/
F-1
F-2
F-3
F-4
F-5
SSB
CW/RTTY
AM/FM
FILTER
EXIT/SET
REC/PLAY
$3
$2
$1
$0
CLEAR
TX
LOCK/SPEECH
COMP BK-IN DELAY KEY SPEED
#7
#8 RECEIVE INDICATOR [RX]
Lights green while receiving a signal and when the
squelch is open.
#9 LOCK INDICATOR [LOCK] (p. 64)
Lights red when the dial lock function is activated.
$0 TRANSMIT FREQUENCY CHECK SWITCH
[XFC]
Monitors the transmit frequency when pushed and
held during the split frequency operation.
• While pushing this switch, the transmit frequency can be
changed with the tuning dial, keypad, memo pad or the
[Y]/[Z] switches.
• When the split lock function is turned ON, pushing [XFC]
cancels the dial lock function. (p. 99)
$1 QUICK TUNING SWITCH [TS] (p. 26)
➥ Turns the quick tuning step ON and OFF.
• While the quick tuning indicator, “Z,” is displayed
above the frequency indication, the frequency can be
changed in programmed kHz steps.
• 0.1, 1, 5, 9, 10, 12.5, 20 and 25 kHz quick tuning
steps are available for each operating mode independently.
Quick tuning indicator
METER
Po
BW 2.4k SFT
TX
VFO
qw:pp
USB
FIL2
qr.qpp.pp
21.076.50
#9
➥ When the quick tuning step is OFF, push for 1
sec. to turn the 1 Hz tuning step ON and OFF.
#7 TRANSMIT INDICATOR [TX]
Lights red while transmitting.
ANT
#8
CW
• 1 Hz indications appear in both readouts and the frequency can be changed in 1 Hz steps.
➥ When the quick tuning step is ON, push for 1 sec.
to enter the quick tuning step set mode.
$2 MEMORY CLEAR SWITCH [M-CL] (p. 80)
Clears the selected readout memory channel contents when pushed for 1 sec. in memory mode.
• The channel becomes a blank channel.
• This switch does not function in VFO mode.
$3 MEMORY WRITE SWITCH [MW] (p. 72)
Stores the selected readout frequency and operating mode into the displayed memory channel when
pushed for 1 sec.
• This function is available both in VFO and memory
modes.
Y]/[Z
Z] (p. 76)
$4 MEMORY UP/DOWN SWITCHES [Y
➥ Push to select the memory channel number for
the selected readout.
• Memory channels can be selected both in VFO and
memory modes.
➥ Select the desired memory channel directly after
pushing [F-INP] and a memory channel number.
$5 MEMO PAD-READ SWITCH [MP-R] (p. 81)
Each pushing calls up a frequency and operating
mode in a memo pad. The 5 (or 10) most recently
programmed frequencies and operating modes can
be recalled, starting from the most recent.
• The memo pad capacity can be expanded from 5 to 10
in set mode for your convenience. (p. 101)
PANEL DESCRIPTION
$6 KEYPAD
➥ Pushing a key selects the operating band.
• [GENE•] selects the general coverage band.
➥ Pushing the same key 2 or 3 times calls up other
stacked frequencies in the band. (p. 24)
• Icom’s triple band stacking register memorizes 3 frequencies in each band.
➥ After pushing [(F-INP)ENT], enters a keyed frequency or memory channel. Pushing [(FINP)ENT] or [Y]/[Z] is necessary at the end.
(pgs. 25, 76)
• e.g. to enter 14.195 MHz, push [(F-INP)ENT] [1] [4]
[•] [1] [9] [5] [(F-INP)ENT].
$7 MEMO PAD-WRITE SWITCH [MP-W] (p. 81)
Programs the selected readout frequency and operating mode into a memo pad.
• The 5 most recent entries remain in memo pads.
• The transmit frequency is programmed when pushed together with [XFC].
• The memo pad capacity can be expanded from 5 to 10
in set mode for your convenience. (p. 101)
$8 SPLIT SWITCH [SPLIT] (p. 70)
➥ Turns the split function ON and OFF when
pushed.
➥ Turns the split function ON, equalizes the sub
readout frequency to the main readout and sets
the sub readout for frequency input when pushed
for 1 sec. in non-FM modes. (Quick split function)
%1 VFO/MEMORY SWITCH [VFO/MEMO]
➥ Switches the selected readout operating mode
between the VFO mode and memory mode when
pushed. (pgs. 23, 76)
➥ Transfers the memory contents to VFO when
pushed for 1 sec. (p. 79)
%2 MAIN/SUB•M.SCOPE SWITCH
[MAIN/SUB•M.SCOPE]
➥ Push momentarilly to select access to the main
or sub readout.
• The sub readout frequency is displayed in outline or
mesh font. The sub readout functions only during split
operation or dualwatch.
➥ Push for 1 sec. to turn the mini spectrum scope
screen indication ON and OFF.
• The mini spectrum scope screen can be indicated
with another screen, such as memory, set mode
screen, simultaneously.
%3 LCD FUNCTION DISPLAY (See p. 9 for details.)
Shows the operating frequency, function switch
menus, spectrum scope screen, memory channel
screen, set mode settings, etc.
• The offset frequency is shifted from the main readout
frequency in FM mode. (pgs. 52, 99)
• The quick split function can be turned OFF using set
mode. (p. 98)
➥ Turns the split function ON and shifts the sub
readout frequency after inputting an offset
(±4 MHz in 1 kHz steps).
$9 DUALWATCH SWITCH [DUALWATCH] (p. 63)
➥ Turns the dualwatch function ON and OFF when
pushed.
➥ Turns the dualwatch function ON and equalizes
the sub readout frequency to the main readout
when pushed for 1 sec. (Quick dualwatch function)
• The quick dualwatch function can be turned OFF
using set mode. (p. 98)
%0 MAIN/SUB CHANGE SWITCH [CHANGE]
➥ Switches the frequency and selected memory
channel between main and sub readouts when
pushed.
• Switches between transmit frequency and receive frequency when the split frequency function is ON.
(p. 70
➥ Equalizes the sub readout frequency to the main
readout frequency when pushed for 1 sec.
1
PANEL DESCRIPTION
■ LCD display
!6
ANT
METER
Po
BW 2.4k SFT
TX VFO
VOX
OFF
COMP
OFF
WIDE
SPAN
qw:pp
USB
1ß
P.AMP
AGC
MID
!0
we:pp
FIL2
qr.qqy.pp
21.085.00
56ß USB
CW
VFO
21.085.00
-12.5k
Grid
10k
10dB
ATT
10dB
FIL2
qr.qpp.pp
ATT
OFF
!5 !4 !3 !2 !1
CW
SPECTRUM
SCOPE
+12.5k
SUB
MARKER
HOLD
ATT
MARKER
HOLD
SET
q TX INDICATOR
Indicates the frequency readout for transmission.
w VFO/MEMORY CHANNEL INDICATOR
(pgs. 23, 76)
Indicates the VFO mode or selected memory channel number.
e SELECT MEMORY CHANNEL INDICATOR (p. 85)
Indicates the displayed memory channel is set as a
select memory channel.
r MULTI-FUNCTION SWITCH GUIDE
Indicates the function of the multi-function switches.
t LCD FUNCTION SWITCH GUIDE
Indicates the function of the LCD function switches
([F-1] – [F-5]).
y MULTI-FUNCTION SCREEN (p. 10)
Shows the screens for the multi-function digital
meter, spectrum scope, voice recorder, memory
channel, scan, memory keyer, RTTY decoder, IF filter selection or set modes, etc.
u MEMORY CHANNEL READOUTS (p. 76)
➥ Show the selected memory channel contents in
VFO mode.
➥ Show the VFO contents in memory mode.
i FREQUENCY READOUTS (p. 25)
Show the operating frequency.
• Outline characters are used for non-accessing readout.
o CLOCK READOUT (p. 90)
Shows the current time.
• Dualtime indication is available.
!0 RTTY TUNING INDICATOR (p. 47)
Shows the tuning level in RTTY mode.
!1 QUICK TUNING INDICATOR (p. 26)
Appears when the quick tuning step function is in
use.
!2 PASSBAND WIDTH INDICATOR (p. 60)
Graphically displays the passband width for twin
PBT operation and center frequency for IF shift operation.
!3 IF FILTER INDICATOR (p. 61)
Shows the selected IF filter number.
!4 SHIFT FREQUENCY INDICATOR (p. 60)
Shows the shift frequency of the IF filter.
!5 MODE INDICATOR (p. 29)
Shows the selected mode.
!6 BAND WIDTH INDICATOR (p. 61)
Shows the passband width of the IF filter.
PANEL DESCRIPTION
■ Screen menu arrangement
The following screens can be selected from the start
up screen. Choose the desired screen using the following chart.
Pushing [EXIT/SET] several times returns to the start
up screen. See p. 92 for set mode arrangement.
• Start up screen
ANT
BW 2.4k SFT
T X VFO
METER
Po
P.AMP
qw:pp
CW
FIL2
qr.qpp.pp
CW
--. ---. --
VFO
USB
FIL2
qr.qpp.pp
ATT
0FF
CW
--. ---. --
• Spectrum scope screen (p. 55)
AGC
MID
AGC
MID
BK-IN
OFF
BK-IN
OFF
1/4
OFF
SCOPE
VOICE
KEYER
MEMORY
SCAN
F-1
F-2
F-3
F-4
F-5
SPECTRUM
-12. 5k
SCOPE
+12. 5k
HOLD
SET
Grid
2.5k
10dB
1/4
OFF
SPAN
ATT
MARKER
F-1
• Voice recorder screen (p. 72)
AGC
MID
BK-IN
OFF
1/4
OFF
• Memory channel screen (p. 77)
VOICE RECORDER
T1
---
T2
---
T3
---
T4
---
AGC
MID
BK-IN
OFF
1/4
OFF
TX M E M O R Y
T1
T2
T4
T3
T/R
BK-IN
OFF
M3
1/4
OFF
M1
M4
BK-IN
OFF
CFM TU
1/4
OFF
QRZ?
M4
M3

MENU1>
HLD/CLR
LD/CLR
TX
X M
MEM
EM
ADJ
NAME
SELECT
WIDE
SCAN
∂F
Span
Programmed
scan edges
∂F
±
P1:
P2:
10kHz
0.500.00MHz
29.999.99MHz
∂ F SPAN
FINE
SET
SCAN
AGC
MID
* * * * RTTY
R T T Y Decode
D e c o d e Monitor
M o n i t o r ****
****
4 5 b p s BAUDOT
BAUDOT
Mark=2125,Shift=170
Mark=2125,Shift=170
U n S h i f t On
O n Space
S p a c e support
s u p p o r t (SET-OTHERS)
(SET-OTHERS)
N e w Line
L i n e Code
C o d e selectable
s e l e c t a b l e (SET-OTHERS)
(SET-OTHERS)
I f RTTY-FIL
R T T Y - F I L is
i s OFF,
O F F , Please
P l e a s e turn
t u r n ON.
ON.
THRESHOLD
SET
F-5
RTTY DECODE
1/4
OFF
---------- - - ---------- - - ---------- - - -
• Memory scan screen (Memory mode: p. 84)
• RTTY decoder screen (RTTY mode: p. 46)
RTTY
FIL
ON
---------- - - -
--.---.---.---.---.---.--
PROG
-1
F-3
AGC
MID
--.---.--
AGC
MID
CQ TEST CQ TEST DE ICOM ICOM
TEST
UR 5NN001 BK
M2
SCAN EDGE
SCAN EDGE
F-4
MEMORY KEYER
M2
---------- - - USB
FL2
USB
FL2
• Programmed scan screen (VFO mode: p. 83)
• Memory keyer screen (CW mode: p. 40)
M1
--.---.-00.500.00
29.999.99
ROLL
F-2
AGC
MID
MEMORY
99
P 1
P 2
BK-IN
OFF
1/4
OFF
MEMO
WIDE
F-3
∂F
Span
Programmed
scan edges
∂F
P1:
P2:
±
10kHz
0.500.00MHz
29.999.99MHz
SELECT
∂ F SPAN
SET
F-5
10
1
PANEL DESCRIPTION
■ Rear panel
!4
!3
!2
qw
!1
q TRANSVERTER JACK [XVERT] (p. 18)
External transverter input/output jack. Activated by
voltage applied to [ACC(2)] pin 6.
w RECEIVE ANTENNA CONNECTOR [RX ANT]
(p. 15)
Connects a 50 Ω general coverage antenna with an
RCA connector.
e TUNER CONTROL SOCKET [TUNER] (p. 15)
Accepts the control cable from an optional AH-4
HF/50 MHz AUTOMATIC ANTENNA TUNER or AH-3 HF
AUTOMATIC ANTENNA TUNER.
r ACCESSORY SOCKET 1 [ACC(1)]
t ACCESSORY SOCKET 2 [ACC(2)]
Enable connection of external equipment such as a
linear amplifier, an automatic antenna selector/
tuner, TNC for data communications, etc.
• See p.20 for socket information.
y STRAIGHT KEY JACK [KEY] (p. 14)
Accepts a straight key or external electronic keyer
with 1⁄4 inch standard plug.
y u i
u CI-V REMOTE CONTROL JACK [REMOTE]
(p. 109)
➥ Connects a PC via the optional CT-17 CI-V LEVEL
CONVERTER for external control of the transceiver
functions.
➥ Used for transceive operation with another Icom
CI-V transceiver or receiver.
i EXTERNAL SPEAKER JACK [EXT SP]
(pgs. 15, 114)
Accepts an 4–8 Ω speaker.
o ALC INPUT JACK [ALC] (p. 17)
Connects to the ALC output jack of a non-Icom linear amplifier.
!0 SEND CONTROL JACK [SEND] (p. 17)
Goes to ground while transmitting to control external equipment such as a linear amplifier.
• Max. control level: 16 V DC/0.5 A
!1 DC POWER SOCKET [DC 13.8V] (p. 16)
Accepts 13.8 V DC through the supplied DC power
cable (OPC-025D).
• [ELEC-KEY] on the front panel can be used for a straight
key or external electronic keyer. Deactivate the internal
electronic keyer in keyer set mode. (p. 43)
(+)
Rear panel view
(_)
If you use an external electronic keyer, make
sure the voltage retained by the keyer is less
than 0.4 V when the key is ON.
11
!0
PANEL DESCRIPTION
!2 ANTENNA CONNECTOR 1 [ANT1]
!3 ANTENNA CONNECTOR 2 [ANT2] (pgs. 13, 14)
Accept a 50 Ω antenna with a PL-259 connector.
!4 GROUND TERMINAL [GND] (pgs. 13, 14)
Connect this terminal to a ground to prevent electrical shocks, TVI, BCI and other problems.
When using an optional AH-4 HF/50 MHz AUTOMATIC ANTENNA TUNER or AH-3 HF AUTOMATIC ANTENNA TUNER, connect it to the [ANT1] connector.
The internal antenna tuner activates for [ANT2] and
deactivates for [ANT1] when connecting the AH-4 or
AH-3.
■ Microphone (HM-36)
q UP/DOWN SWITCHES [UP]/[DN]
Change the selected readout frequency or memory
channel.
w PTT SWITCH
Push and hold to transmit; release to receive.
• Continuous pushing changes the frequency or memory
channel number continuously.
• While pushing [XFC], the transmit readout frequency can
be controlled while in spilt frequency operation.
• The [UP]/[DN] switch can simulate a key paddle. Preset
in the keyer set mode. (p. 43)
• HM-36 SCHEMATIC DIAGRAM
MICROPHONE
10
MICROPHONE CABLE MICROPHONE PLUG
4700p
2k
0.33
4700p
MIC
ELEMENT
DOWN
PTT
RECEIVE
UP
w i y
470
TRANSMIT
12
2
INSTALLATION AND CONNECTIONS
■ Unpacking
■ Antenna connection
After unpacking, immediately report any damage to the
delivering carrier or dealer. Keep the shipping cartons.
For radio communications, the antenna is of critical importance, along with output power and sensitivity. Select antenna(s), such as a well-matched 50 Ω antenna,
and feedline. 1.5:1 or better of Voltage Standing Wave
Ratio (VSWR) is recommended for your desired band.
Of course, the transmission line should be a coaxial
cable.
For a description and a diagram of accessory equipment included with the IC-756PROIII, see ‘Supplied
accessories’ on p. i of this manual.
■ Selecting a location
Select a location for the transceiver that allows adequate air circulation, free from extreme heat, cold, or
vibrations, and away from TV sets, TV antenna elements, radios and other electromagnetic sources.
The base of the transceiver has an adjustable stand
for desktop use. Set the stand to one of two angles depending on your operating conditions.
When using 1 antenna, use the [ANT1] connector.
CAUTION: Protect your transceiver from lightning
by using a lightning arrestor.
PL-259 CONNECTOR INSTALLATION EXAMPLE
30 mm
Coupling ring
10 mm (soft solder)
10 mm
Soft
solder
1–2 mm
Slide the connector
body on and solder it.
Screw the coupling
ring
onto
the
connector body.
■ Grounding
For best results, connect a heavy gauge wire or strap
to a long earth-sunk copper rod. Make the distance between the [GND] terminal and ground as short as possible.
R WARNING: NEVER connect the [GND]
terminal to a gas or electric pipe, since the connection could cause an explosion or electric shock.
13
Strip the cable as
shown at left. Soft solder the center conductor.
solder solder
To prevent electrical shock, television interference
(TVI), broadcast interference (BCI) and other problems, ground the transceiver through the GROUND
terminal on the rear panel.
Slide the coupling ring
down. Strip the cable
jacket and soft solder.
30 mm ≈ 9⁄8 in 10 mm ≈ 3⁄8 in 1–2 mm ≈ 1⁄16 in
Antenna SWR
Each antenna is tuned for a specified frequency
range and SWR may be increased out-of-range.
When the SWR is higher than approx. 2.0:1, the
transceiver’s power drops to protect the final transistor. In this case, an antenna tuner is useful to match
the transceiver and antenna. Low SWR allows full
power for transmitting even when using the antenna
tuner. The IC-756PROIII has an SWR meter to monitor the antenna SWR continuously.
2
INSTALLATION AND CONNECTIONS
■ Required connections
• Front panel
CW KEY
TIMER
TWIN PBT
HF/50MHz TRANSCEIVER
POWER
Po
1 1.5
SWR
COMP
ALC
TRANSMIT
10
+ 20
25 50
+ 40
SPLIT
1.8
3.5
DUAL
WATCH
10
14
18
21
24
28
50
F-INP
+ 60dB
100
2 3
20
10
dB
CHANGE
MW
ENT
M-CL
PBT CLR
VFO/
MEMO
M.SCOPE
PHONES
TUNER MONITOR
NB
GENE
MP-W
MP-R
NR
AF
RF/SQL
BAL
NOTCH
TX
NR
LOCK
RIT
MIC
F-1
F-2
F-3
F-4
F-5
SSB
CW/RTTY
AM/FM
FILTER
EXIT/SET
REC/PLAY
A straight key can be used
when the internal electronic
keyer is turned OFF in keyer
set mode. (p. 43)
TX
RIT/
MIC GAIN RF POWER
COMP BK-IN DELAY KEY SPEED
CLEAR
TX
LOCK/SPEECH
MICROPHONES (p. 114)
HM-36
NOTCH
CW PITCH
XFC
RX
ELEC-KEY
TS
MAIN/
SUB
SM-20
• Rear panel
ANTENNA 1, 2 (p. 13)
[Example]: ANT1 for 1.8–18 MHz bands
ANT2 for 21–50 MHz bands
DC POWER SUPPLY (p.16)
PS-125
GROUND (p. 13)
Use the heaviest gauge wire
or strap available and make
the connection as short as
possible.
Grounding prevents electrical
shocks, TVI and other
problems.
STRAIGHT KEY
14
2
INSTALLATION AND CONNECTIONS
■ Advanced connections
• Front panel
TIMER
HEADPHONES
TWIN PBT
HF/50MHz TRANSCEIVER
POWER
10
25 50
Po
1 1.5
SWR
COMP
ALC
TRANSMIT
10
+ 20
+ 40
SPLIT
1.8
3.5
DUAL
WATCH
10
14
18
21
24
28
50
F-INP
+ 60dB
100
20
dB
CHANGE
MW
ENT
M-CL
PBT CLR
VFO/
MEMO
M.SCOPE
PHONES
TUNER MONITOR
AF
RF/SQL
NB
BAL
MP-W
MP-R
TS
NOTCH
NR
TX
NR
XFC
LOCK
RIT
MIC
TX
RIT/
F-1
F-2
F-3
F-4
F-5
SSB
CW/RTTY
AM/FM
FILTER
EXIT/SET
REC/PLAY
MIC GAIN RF POWER
COMP BK-IN DELAY KEY SPEED
NOTCH
CW PITCH
MAIN/
SUB
RX
ELEC-KEY
GENE
CLEAR
TX
LOCK/SPEECH
MIC
The AFSK modulation signal
can be input from [MIC]. (p. 19)
• Rear panel
ANTENNA 1, 2 (pgs. 17, 18)
Connects a linear amplifier,
antenna selector, etc.
[REMOTE] (p. 109)
Used for computer control and transceive operation.
RX ANTENNA
TRANSVERTER
(p. 18)
Connects a transverter
for V/UHF band use.
ACC SOCKETS (pgs. 19, 20)
AH-4/AH-3
(p. 18)
AH-2b
15
When using the AH-4/AH-3,
it must be connected to the
[ANT1] connector.
EXTERNAL SPEAKER (p. 114)
SP-23
[SEND], [ALC]
(p. 17)
Used for connecting a
non-Icom linear amplifier.
INSTALLATION AND CONNECTIONS
■ Power supply connections
CAUTION: Before connecting the DC power
cable, check the following important items. Make
sure:
• The [POWER] switch is OFF.
• Output voltage of the power source is 12–15 V
when you use a non-Icom power supply.
• DC power cable polarity is correct.
Use the optional PS-125 DC power supply with a 25 A
capacity when operating the transceiver with AC
power. Refer to the diagrams below.
Red
Black
: positive + terminal
: negative _ terminal
CONNECTING PS-125 DC POWER SUPPLY
PS-125
Transceiver
DC power
socket
Connect to an AC outlet
using the supplied AC cable.
DC power cable
CONNECTING A DC POWER SUPPLY
Transceiver
AC outlet
A DC power supply
13.8 V; at least 23 A
Black Red
to DC power
socket
Supplied
DC power cable
AC cable
30 A fuses
CONNECTING A VEHICLE BATTERY
R WARNING NEVER connect to a battery without supplied
NOTE: Use terminals for
the cable connections.
Grommet
_ black
Crimp
Solder
+ red
DC fuses, otherwise a fire hazard
may occur.
NEVER connect the transceiver
directly to a 24 V battery.
IMPORTANT! Detailed installation
notes for Icom mobile transceivers to
be fitted into vehicles are available.
Contact your Icom dealer or distributor.
12 V
battery
Supplied
DC power cable
16
2
INSTALLATION AND CONNECTIONS
■ Linear amplifier connections
Use the [ANT1] connector when connecting a linear
amplifier.
CONNECTING THE IC-PW1
Remote control cable (supplied with the IC-PW1)
To an
antenna ACC-1
ACC cable (supplied with the IC-PW1)
Be sure to connect the cable
to the 7-pin ACC(2) jack.
Coaxial cable
REMOTE
ANT
INPUT1
(supplied with the IC-PW1)
INPUT2
Coaxial cable
(optional)
ANT2
EXCITER
1&2
Connect
[INPUT2]
if necessary
ANT1 ACC(2)
REMOTE
GND
GND
IC-PW1
AC outlet
Transceiver
Ground
(Non-European versions: 100–120/220–240 V
European version
: 230 V)
Turn OFF the transceiver’s antenna tuner while tuning the IC-PW1’s tuner.
CONNECTING A NON-ICOM LINEAR AMPLIFIER
Transceiver
R WARNING:
Set the transceiver output power and linear amplifier
ALC output level referring to the linear amplifier instruction manual.
ANT1
50 ‰ coaxial
cable
To an
antenna
RF OUTPUT
RF INPUT
ALC
SEND
Non-Icom linear amplifier
17
ALC
SEND
The ALC input level must be in the range 0 V to –4 V,
and the transceiver does not accept positive voltage.
Non-matched ALC and RF power settings could cause
a fire or ruin the linear amplifier.
The specifications for the SEND relay are 16 V DC
0.5 A. If this level is exceeded, a large external relay
must be used.
INSTALLATION AND CONNECTIONS
■ External antenna tuner connection
CONNECTING THE AH-4/AH-3
The AH-4 or AH-3 must be connected to [ANT1].
Long wire or optional AH-2b
Coaxial cable (from the AH-4 or AH-3)
ANT1
Control cable
Transceiver
Ground
AH-4 or AH-3
■ Transverter jack information
When 2 to 13.8 V is applied to pin 6 of [ACC(2)], the
[XVERT] jack is activated for transverter operation
and the antenna connectors do not receive or transmit any signals. (p. 20)
While receiving, the [XVERT] jack can be activated as
an input terminal from an external transverter.
While transmitting, the [XVERT] jack outputs signals
of the displayed frequency at –20 dBm (22 mV) as
signals for the external transverter.
Transverter jack
■ Microphone connector information
(Front panel view)
[MIC]
Pin No.
i Main readout AF output
(varies with [AF]/[BAL])
q Microphone input
u GND
(Microphone ground)
w +8 V DC output
y GND (PTT ground)
e Frequency up/down
t PTT
r Main readout squelch switch
FUNCTION
DESCRIPTION
+8 V DC output
Max. 10 mA
Frequency up
Ground
Frequency down
Ground through 470 Ω
Squelch open
“Low” level
Squelch closed
“High” level
CAUTION: DO NOT short pin 2 to ground as this
can damage the internal 8 V regulator.
NOTE: DC voltage is applied to pin 1 for microphone operation. Take care when using a non-Icom
microphone.
18
2
INSTALLATION AND CONNECTIONS
■ FSK and AFSK (SSTV) connections
To connect a terminal unit, TNC or scan converter,
refer to the diagram below.
For RTTY operation:
Narrow filter settings may not pass RTTY signals.
Be sure to select the appropriate IF filter settings
corresponding to the signal width. (p. 61)
FSK (RTTY) connection
Use RTTY mode for
operation
Terminal unit (TU) or
Terminal Node Controller (TNC)
AF input
Ground (GND)
PTT
SQUELCH input*
RTTY keying
[ACC(1)] socket
(Rear panel view)
AFSK and SSTV connections
* Connect the SQUELCH line when required.
Terminal Node Controller (TNC)
or Scan converter
Use SSB or FM mode
for operation
AFSK output
Ground (GND)
AF input
Ground (GND)
PTT
SQUELCH input*
[ACC(1)] socket
(Rear panel view)
* Connect the SQUELCH line when required.
AFSK and SSTV connections via microphone connector
Terminal Node Controller (TNC)
or Scan converter
Use SSB or FM mode
for operation
AFSK output
AF input
[MIC] connector
(Front panel view)
Ground (GND)
PTT
SQUELCH input*
* Connect the SQUELCH line when required.
When connected to the [MIC] connector, [MIC
GAIN] and [AF] control adjustment is required.
19
INSTALLATION AND CONNECTIONS
■ Accessory connector information
ACC (1)
8 3
PIN No. NAME
RTTY Controls RTTY keying
“High” level
“Low” level
Output current
GND Connects to ground.
Connected in parallel with ACC(2) pin 2.
Input/output pin.
SEND Goes to ground when transmitting.
When grounded, transmits.
Ground level
: –0.5 V to 0.8 V
Output current
: Less than 20 mA
Input current (Tx) : Less than 200 mA
Connected in parallel with ACC(2) pin 3.
MOD
AF
SQLS
13.8 V 13.8 V output when power is ON.
SPECIFICATIONS
Rear panel view
ACC (2)
DESCRIPTION
ALC
PIN No. NAME
Modulator input.
Connects to a modulator.
Input impedance
Input level
: 10 kΩ
: Approx. 100 mV rms
AF detector output.
Output impedance : 4.7 kΩ
Fixed, regardless of [AF] position
Output level
: 100–300 mV rms
in default settings. (see notes below)
Squelch output.
Goes to ground when squelch opens.
SQL open
SQL closed
: Less than 0.3 V/5 mA
: More than 6.0 V/100 µA
Output current
: Max. 1 A
Connected in parallel with ACC(2) pin 7.
Control voltage
: –4 V to 0 V
Input impedance
: More than 10 kΩ
Connected in parallel with ACC(2) pin 5.
ALC voltage input.
DESCRIPTION
SPECIFICATIONS
Output voltage
Output current
8V
GND
Same as ACC(1) pin 2.
SEND
Same as ACC(1) pin 3.
BAND
ALC
TRV
13.8 V
Rear panel view
: More than 2.4 V
: Less than 0.6 V
: Less than 2 mA
Regulated 8 V output.
Band voltage output.
(Varies with amateur band)
Output voltage
: 8 V ±0.3 V
: Less than 10 mA
: 0 to 8.0 V
Same as ACC (1) pin 8.
Activates [XVERT] input/output
when “HIGH” voltage is applied.
Input impedance
Input voltage
: More than 10 kΩ
: 2 to 13.8 V
Same as ACC(1) pin 7.
If the CW side tone level limit or beep level limit is in
use, the CW side tone or beep tone decreases from
the fixed level when the [AF] control is rotated above
a specified level, respectively. (p. 94)
20
3
BASIC OPERATIONS
■ When first applying power (CPU resetting)
Before first applying power, make sure all connections
required for your system are complete by referring to
Section 2. Then, reset the transceiver using the following procedure.
[POWER]
[F-INP] [M-CL]
Resetting CLEARS all programmed contents in
memory channels and returns programmed values
in set mode to default values.
q Make sure the transceiver power is OFF.
w While pushing [M-CL] and [F-INP], push [POWER]
to turn power ON.
• The internal CPU is reset.
• A/D convertor calibration of the DSP unit starts and it
takes 10 sec.
• The transceiver displays its initial VFO frequencies when
resetting is complete.
Under cooler temperatures, the LCD may appear
dark and unstable after turning power ON. This is
normal and does not indicate any equipment malfunction.
e Correct the set mode settings after resetting, if desired.
■ Initial settings
After resetting the transceiver, set controls and
switches as shown in the figure below.
[ANT]: 1
CW
CCW
: Max. clockwise
: Max. counterclockwise
[P.AMP]: 1
[ATT]: OFF
[METER]: Po
[PBT CLR]: OFF
[POWER]: OFF
[NOTCH]: OFF
[TUNER], [MONITOR],
[NB], [NR]: OFF
[AF]: Max. CCW
[RF/SQL]: 12 o clock
[MIC GAIN]: 10—12 o clock
[RF POWER]: Max. CW
[BAL]: Center
[COMP]* : OFF WIDE;
[1/4],*2 [TONE]*2: OFF
[AGC]: MID*1
[VOX],*2 [BK-IN],*2
[RTTY FIL]*2: OFF
[LOCK]: OFF
*1 FAST in FM mode.
*2 Appears in some modes.
Turn power ON, then check the display. If any of the
following indicators appear, turn them OFF as follows:
• Quick tuning step indicator “▼” : Push [TS].
• 1 Hz frequency readout
: Push [TS] for 2 sec.
(while quick tuning
step is OFF)
• RIT indicator “ RIT ”
: Push [RIT].
TX ”
• ∂TX indicator “ ∂TX
: Push [∂TX].
• Split indicator “ SPLIT ”
: Push [SPLIT].
21
• Dualwatch indicator “
” : Push
[DUAL WATCH].
• Twin peak filter indicator “ TPF ” : Push [RTTY FIL].
• Auto notch indicator “ A N ”
: Push [NOTCH].
• Manual notch indicator “ M N ” : Push [NOTCH].
DUAL-W
BASIC OPERATION
■ VFO description
VFO is an abbreviation of Variable Frequency Oscillator, and traditionally refers to an oscillator.
The transceiver’s VFO is somewhat different. The VFO
of the IC-756PROIII acts like a computer’s window and
can show one frequency and one operating mode.
You can call up a desired frequency to the VFO with
the keypad, memo pad-read switch (see p. 81) or the
memory transfer function (see p. 79). You can also
change the frequency with the tuning dial and select
the operating mode with the mode switches.
During dualwatch or split frequency operation, the sub
VFO is functional (non-outline, non-spotted, larger frequency characters). While pushing [XFC] during split
frequency operation, you can change the transmit
readout frequency with the keypad, memo pad-read
switch or the memory transfer function.
MODE
SWITCHES
Select
ANT
BW 2.4k SFT
T X VFO
METER
Po
qw:pp
USB
FIL2
qr.qpp.pp
CW
21.076.50
Change
Transfer
Transfer
TUNING DIAL
Transfer
KEYPAD
(BAND KEY)
MEMO PAD
MEMORY
CHANNEL
21.295 MHz
28.025 MHz
7.001 MHz
• Differences between VFO mode and memory mode
VFO MODE
VFO shows a frequency and operating mode. If the
frequency or operating mode is changed, the VFO
automatically memorizes the new frequency or new
operating mode.
MEMORY MODE (pgs. 76–80)
Each memory channel shows a frequency and operating mode like a VFO. Even if the frequency or mode
is changed, the memory channel does not memorize
the new frequency or operating mode.
When a VFO is selected from another band or memory mode, the frequency and operating mode last
used for that VFO appear.
When the memory channel is selected from another
memory channel or VFO mode, the memorized frequency and operating mode appear.
[EXAMPLE]
[EXAMPLE]
VFO is selected.
ANT
Memory channel 1 is selected.
BW 2.4k SFT
T X VFO
TX
qw:pp
USB
qr.qpp.pp
METER
Po
21.076.50
CW
The frequency is changed.
ANT
BW 2.4k SFT
T X VFO
TX
qw:pp
USB
CW
METER
Po
BW
500 SFT
TX
TX
CW
BPF
qw:pp
14.123.00
USB
VFO is selected again.
ANT
METER
Po
METER
Po
ANT
FIL2
wq.puy.tp
VFO
VFO
qw:pp
USB
FIL2
qr.qpp.pp
VFO
VFO
14.100.00
USB
BW 2.4k SFT
TX
TX
qw:pp
USB
FIL2
qr.qwe.pp
VFO
VFO
14.100.00
USB
Another memory channel is selected.
Memory mode is selected.
ANT
ANT
FIL2
21.076.50
METER
Po
BW 2.4k SFT
TX
TX
The frequency is changed.
qr.qwe.pp
METER
Po
ANT
FIL2
METER
Po
BW 2.4k SFT
TX
TX
12
qw:pp
USB
FIL2
wq.wrt.pp
VFO
VFO
14.100.00
USB
Memory channel 1 is selected again.
BW 2.4k SFT
T X VFO
TX
qw:pp
USB
qr.qwe.pp
ANT
FIL2
21.076.50
CW
Changed frequency (14.123 MHz) appears.
METER
Po
BW 2.4k SFT
TX
TX
qw:pp
USB
FIL2
qr.qpp.pp
VFO
VFO
14.100.00
USB
Changed frequency (14.123 MHz) does not appear and
memorized frequency (14.100 MHz) appears instead.
22
3
BASIC OPERATION
■ Selecting VFO/memory mode
[VFO/MEMO]
➥ Push [VFO/MEMO] to switch between VFO and
memory modes.
• “VFO” appears when VFO mode, or the selected memory channel number appears when memory mode is
selected beside the frequency readout.
• Pushing [VFO/MEMO] for 1 sec. transfers the contents
of the selected memory channel to VFO mode. (p. 79)
VFO indicator
ANT
BW 500
TX
TX
METER
Po
SFT
VFO
CW
BPF
qw:pp
FIL2
qr.qot.pp
14.100.00
USB
Memory channel number
ANT
BW 2.4k SFT
TX
TX
METER
Po
qw:pp
USB
FIL2
qr.qpp.pp
VFO
VFO
14.195.00
CW
■ Main/Sub band selection
[MAIN/SUB]
➥ Push [MAIN/SUB] to select access to the main or
sub readout.
• The sub readout frequency is displayed in outline or
mesh font. The sub readout functions only during split
oeration or dualwatch.
23
BASIC OPERATION
■ Selecting an operating band
Band keys
The triple band stacking register provides 3 memories
in one band. 3 sets of a frequency and operating mode
on each band are automatically stored when used.
If a band key is pushed once, the frequency and operating mode last used are called up. When the key is
pushed again, another stored frequency and operating
mode are called up.
This function is convenient when you operate 3 operating modes on one band. For example, one register
is used for a CW frequency, another for an SSB frequency and the other one for an RTTY frequency.
See the table below for a list of the band available and
the default settings for each band.
BAND
REGISTER 1
REGISTER 2
REGISTER 3
1.8 MHz
3.5 MHz
7 MHz
10 MHz
14 MHz
18 MHz
21 MHz
24 MHz
28 MHz
50 MHz
General
1.900000 MHz CW
3.550000 MHz LSB
7.050000 MHz LSB
10.120000 MHz CW
14.100000 MHz USB
18.100000 MHz USB
21.200000 MHz USB
24.950000 MHz USB
28.500000 MHz USB
50.100000 MHz USB
15.000000 MHz USB
1.910000 MHz CW
3.560000 MHz LSB
7.060000 MHz LSB
10.130000 MHz CW
14.200000 MHz USB
18.130000 MHz USB
21.300000 MHz USB
24.980000 MHz USB
29.500000 MHz USB
50.200000 MHz USB
15.100000 MHz USB
1.915000 MHz CW
3.580000 MHz LSB
7.020000 MHz CW
10.140000 MHz CW
14.050000 MHz CW
18.150000 MHz USB
21.050000 MHz CW
24.900000 MHz CW
28.100000 MHz CW
51.000000 MHz FM
15.200000 MHz USB
D Using the band stacking registers
q Push [(14)5], then select a frequency and an operating mode.
[Example]: 14 MHz band
1.8
3.5
• Frequency and operating mode are memorized in the
first band stacking register.
10
14
18
w Push [(14)5] again, then select another frequency
and operating mode.
21
GENE •
24
28
50
F-INP
ENT
• This frequency and operating mode are memorized in
the second band stacking register.
e Push [(14)5] again, then select another frequency
and operating mode.
• This frequency and operating mode are memorized in
the third band stacking register.
• When a fourth frequency and operating mode are selected on a band, the first register set in step q, is over
written.
24
3
BASIC OPERATION
■ Frequency setting
The transceiver has several tuning methods for convenient frequency tuning.
D Tuning with the tuning dial
Band keys
q Push the desired band key on the keypad 1–3
times.
• 3 different frequencies can be selected on each band
with the band key. (See previous page “Using the band
stacking register.”)
ANT
BW 2.4k SFT
T X VFO
qw:pp
USB
FIL2
wq.wpp.pp
METER
Po
21.076.50
CW
Tuning dial
w Rotate the tuning dial to set the desired frequency.
ANT
BW 2.4k SFT
T X VFO
qw:pp
USB
FIL2
wq.wot.pp
METER
Po
21.076.50
CW
If the dial lock function is activated, the lock indicator lights, and the tuning dial does not function. In
this case, push [LOCK/SPEECH] to deactivate the
lock function.
D Direct frequency entry with the keypad
The transceiver has a keypad for direct frequency
entry as described right.
Keypad
q Push [(F-INP)ENT].
•“
” appears.
w Input the desired frequency.
• Push [(GENE)•] to input “ • (decimal point)” between the
MHz units and kHz units.
e Push [(F-INP)ENT] to set the input frequency.
• To cancel the input, push [MAIN/SUB] instead of
[(F-INP)ENT].
[EXAMPLE]
14.025 MHz
F-INP
•
ENT
•
ENT
706 kHz
F-INP
•
ENT
5.100 MHz
F-INP
•
ENT
7.000 MHz
F-INP
ENT
21.280
F-INP
•
18.0725 MHz
F-INP
25
21.245
ENT
BASIC OPERATION
D Quick tuning step
The operating frequency can be changed in kHz
steps (0.1, 1, 5, 9, 10, 12.5, 20 or 25 kHz selectable)
for quick tuning.
q Push [TS] momentarily to turn the quick tuning
function ON.
• “Z” appears when the quick tuning function ON.
Quick tuning indicator
[TS]
BW 2.4k SFT
ANT
TX
METER
Po
VFO
qw:pp
USB
FIL2
qr.qpp.pp
21.076.50
CW
w Rotate the tuning dial to change the frequency in
programmed kHz steps.
e Push [TS] again to turn the quick tuning function
OFF.
Tuning dial
• “Z” disappears.
r Rotate the tuning dial for normal tuning if desired.
D Selecting “kHz” step
[TS]
q Push [TS] momentarily to turn the quick tuning
step ON.
• “Z” appears when the quick tuning function ON.
w Push [TS] for 1 sec. to enter the tuning step setting display.
• Selected tuning steps for all modes appear.
TS
AGC
MID
VOX
OFF
Mode selection
Tuning dial
SSB
CW
RTTY
AM
FM
10
(kHz)
COMP
OFF
WIDE
DEF
e Select the desired operating mode.
r Rotate the tuning dial to select the desired tuning
step from 0.1, 1, 5, 9, 10, 12.5, 20 or 25 kHz.
• Push [(F-3)DEF] to return to the default setting, if desired.
t Repeat steps e and r to select quick tuning
steps for other modes, if desired.
y Push [EXIT/SET] to exit the setting display.
26
3
BASIC OPERATION
D Selecting 1 Hz step
The minimum tuning step of 1 Hz can be used for fine
tuning.
[TS]
q Push [TS] to turn OFF the quick tuning step.
• “▼” does not appear.
w Push [TS] for 1 sec. to turn the 1 Hz tuning step
ON and OFF.
• RIT and/or ∂TX also functions in 1 Hz tuning step when
used.
1 Hz step indicator
ANT
METER
Po
BW 2.4k SFT
T X VFO
TX
FIL2
qr.qot.ppp
14.100.00
P.AMP
Tuning dial
qw:pp
USB
VFO
USB
USB
FIL2
qr.wpt.ppp
ATT
0FF
14.100.00
USB
AGC
MID
VOX
OFF
COMP
OFF
WIDE
SCOPE
VOICE
MEMORY
SCAN
D 1⁄4 tuning function (SSB data/CW/RTTY only)
While operating in SSB data/CW/RTTY, the 1⁄4 tuning
function is available for critical tuning. Dial rotation is
reduced to 1⁄4 of normal when the 1⁄4 function is in
use.
➥ Push [1/4] to toggle the 1⁄4 function ON and OFF.
1⁄4
tuning function OFF
1/4
OFF
[1/4]
27
1⁄4
tuning function ON
1/4
ON
BASIC OPERATION
D Auto tuning step function
When rotating the tuning dial rapidly, the tuning speed
accelerated automatically as selected.
[(F-1)Y]
[EXIT/SET]
[(F-2)Z]
Tuning dial
[(F-5)OTHERS]
q Push [EXIT/SET] several times to close a multifunction screen, if necessary.
w Push [EXIT/SET] for 1 sec. to select the set mode
menu screen.
e Push [(F-5)OTHERS] to enter miscellaneous (others) set mode.
r Push [(F-1)Y] or [(F-2)Z] to select “MAIN DIAL
Auto TS.”
t Rotate tuning dial to select the desired condition
from high, low and OFF.
• High: Approx. 5 times faster
• Low: Approx. twise faster
• OFF: Auto tuning step is turned OFF
y Push [EXIT/SET] to exit the set mode.
OTHERS SET
AGC
MID
Memopad Numbers
MAIN DIAL Auto TS
MIC UP/Down Speed
Quick RIT/ ∂TX Clear
SSB/CW Synchronous Tuning
CW Normal Side
External Keypad
BK-IN
OFF
1/4
OFF
é
è
DEF
OFF
HIGH
HIGH
OFF
OFF
LSB
Auto
WIDE
D Band edge warning beep
When selecting a frequency, that lies outsideof a
band’s specified frequency range, a warning beep
sounds.
This function can be turned OFF in set mode, if desired.
q Push [EXIT/SET] several times to close a multifunction screen, if necessary.
w Push [EXIT/SET] for 1 sec. to select the set mode
menu screen.
e Push [(F-5)OTHERS] to enter miscellaneous (others) set mode.
r Push [(F-1)Y] or [(F-2)Z] to select “Beep (Band
edge).”
t Rotate tuning dial to turn the band edge warning
beep ON and OFF.
y Push [EXIT/SET] to exit the set mode.
AGC
MID
[(F-1)Y]
[EXIT/SET]
[(F-2)Z]
Tuning dial
[(F-5)OTHERS]
BK-IN
OFF
1/4
OFF
é
OTHERS SET
Beep(Confirmation)
Beep(Band Edge)
RF/SQL Control
Quick Dualwatch
Quick SPLIT
FM SPLIT Offset(HF)
FM SPLIT Offset(50M)
è
DEF
ON
ON
RF+SQL
ON
ON
-0.100MHz
-0.100MHz
WIDE
28
3
BASIC OPERATION
■ Operating mode selection
SSB (LSB/USB), CW, CW-R (CW reverse), RTTY,
RTTY-R (RTTY reverse), AM and FM. Data modes of
SSB, AM and FM are also available in the IC756PROIII. Select the desired operation mode as follows.
To select a mode of operation, push the desired mode
switch momentarily. Push the switch again to toggle
between USB and LSB, CW/CW-R and RTTY/RTTYR, AM and FM, if necessary. Push the switch for
1 sec. to toggle between CW and CW-R, RTTY and
RTTY-R, or to select data mode, if necessary.
See the diagram below left for the order of selection.
Microphone signals are muted when data mode is
selected.
SSB
USB-D
USB
LSB
LSB-D
CW/RTTY
CW-R
CW
AM-D
AM
RTTY
RTTY-R
FM
FM-D
AM/FM
Push mode switch
for 1 sec.
Push mode switch
momentarily.
Mode selection
• Selecting SSB mode
➥ Push [SSB] to select USB or LSB.
• USB is selected first when above 10 MHz; or LSB is
selected first when below 10 MHz operation.
(USB is selected when 5 MHz band is selected for the
USA version.)
• After USB or LSB is selected, push [SSB] to toggle between USB and LSB.
• After USB or LSB is selected, push [SSB] for 1 sec. to
select USB-D or LSB-D mode, respectively.
• Selecting CW/RTTY mode
➥ Push [CW/RTTY] to select CW or RTTY.
• After CW or RTTY is selected, push [CW/RTTY] to toggle between CW and RTTY.
• After CW or RTTY is selected, push [CW/RTTY] for
1 sec. to toggle between CW and CW reverse, or,
RTTY and RTTY reverse mode, respectively.
• Selecting AM/FM mode
➥ Push [AM/FM] to select AM or FM.
• After AM or FM is selected, push [AM/FM] to toggle between AM and FM.
• After AM or FM is selected, push [AM/FM] for 1 sec. to
select AM-D or FM-D mode, respectively.
■ Volume setting
➥ Rotate [AF] control clockwise to increase; counterclockwise to decrease the audio output level.
• Set a suitable audio level.
[AF]
Audio output
increases
Audio output
decreases
29
BASIC OPERATION
■ Squelch and receive (RF) sensitivity
Adjusts the RF gain and squelch threshold level. The
squelch removes noise output from the speaker
(closed position) when no signal is received.
• The squelch is particularly effective for FM. It is also available for other modes.
• 12 to 1 o’clock position is recommended for any setting of
the [RF/SQL] control.
• The control can be set as ‘Auto’ (RF gain control in SSB,
CW and RTTY; squelch control in AM and FM) or squelch
control (RF gain is fixed at maximum) in set mode as follows. (p. 98)
[RF/SQL]
• When setting as RF gain/squelch control
Noise squelch (FM mode)
SET MODE
OPERATION
RF+SQL
(default)
Can be used in all modes.
Functions as noise squelch or S-meter
squelch in AM and FM modes; Smeter squelch only in other modes.
SQL
Operates as a squelch control.
• RF gain is fixed at maximum sensitivity.
Operates as an RF gain control in
SSB, CW and RTTY modes.
AUTO
• Squelch is fixed open.
Operates as a squelch control in AM
and FM modes.
Recommended level
Squelch is
open.
Maximum
RF gain
RF gain
adjustable
range
S-meter
squelch
• When functioning as RF gain control
(Squelch is fixed open; SSB, CW, RTTY only)
• RF gain is fixed at maximum sensitivity.
Maximum
RF gain
Adjustable
range
Adjusting RF gain (Receive sensitivity)
Normally, [RF/SQL] is set to the 11 o’clock position.
Rotate [RF/SQL] to the 11 o’clock position for maximum sensitivity.
• Rotating counterclockwise from the maximum position reduces sensitivity.
• The S-meter indicates receive sensitivity.
Adjusting squelch (Removing non-signal noise)
Rotate [RF/SQL] clockwise when receiving no signal,
until the noise just disappears.
• [RX] indicator light goes out.
• Rotating [RF/SQL] past the threshold point invokes the Smeter squelch— this allows you to set a minimum signal
level needed to open the squelch.
Minimum RF gain
• When functioning as squelch control
(RF gain is fixed at maximum.)
Noise squelch
threshold
(FM mode)
Noise squelch (FM mode)
Squelch is
open.
Shallow
S-meter squelch
threshold
S-meter
squelch
Deep
While rotating the RF gain control, noise may be
heard. This comes from the DSP unit and does not
indicate an equipment malfunction.
30
3
BASIC OPERATION
■ Meter function
The transceiver has 4 transmit meter functions for
your convenience. Select the desired meter with the
[METER] switch.
• Analog transmit meter
➥ Push [METER] to select RF power (Po), SWR, ALC
or compression level (COMP).
[METER] switch
In addition, the transceiver can display the multi-function digital meter in the LCD display, which displays
all transmit meters simultaneously.
• Multi-function digital meter
q Push [METER] for 1 sec. to turn the multi-function
digital meter ON.
w Push [(F-1)P-HOLD] to toggle the peak level hold
function ON or OFF.
• “P-HOLD” appears on the window title when the peak
level hold function is turned ON.
ANT
BW 2.4k SFT
VFO
TX
TX
Po
SWR
Indicates the relative RF output power in %.
Indicates the SWR over the transmission
line.
ALC
Indicates the ALC level. When the meter
movement shows the input signal level exceeds the allowable level, the ALC limits
the RF power. In such cases, reduce the
[MIC GAIN] control.
COMP
Indicates the compression level when the
speech compressor is in use.
USB
14.100.00
P.AMP
MEASUREMENT
FIL2
qr.qot.pp
METER
Po
DISPLAY
INDICATION
qw:pp
USB
VFO
USB
FIL2
qr.wpt.pp
ATT
OFF
MULTI-FUNCTION METER
. 1 . . . 3 . . . 5 . . . 7 . . . 9 . ..
..+20
+20...
...+40
+40...
...+
+60dB
Po
VOX
OFF
USB
14.100.00
P-HOLD
AGC
MID
0∑∑∑∑∑∑∑∑∑∑∑
∑∑∑∑∑∑∑∑∑∑∑25
25∑∑∑∑∑∑∑∑∑
∑∑∑∑∑∑∑∑∑∑50 ∑∑∑∑∑∑∑∑∑∑∑∑∑∑∑∑∑∑∑ 100%
ALC
COMP
COMP
OFF
WIDE
10
15
20
dB
SWR
1.5
2.5
P-HOLD
e Push [METER] for 1 sec. or push [EXIT/SET] to
turn the multi-function digital meter OFF.
■ SWR reading
The SWR meter indicates the SWR over the transmission line in all modes.
SWR meter
Less than 1.5:1
q Push [TUNER] to turn the antenna tuner OFF.
w Push [METER] several times to select the Po
meter.
e Push [CW/RTTY] once or twice to select RTTY
mode.
r Push [TRANSMIT].
t Rotate [RF POWER] clockwise past the 12 o’clock
position for more than 30 W output power (30%).
y Push [METER] once to select the SWR meter as
the transmit meter.
u Read the SWR on the SWR meter.
31
Po
10
25 50
1 1.5
SWR
COMP
ALC
+ 20
+ 40
+ 60dB
100
2 3
20
10
dB
The built-in antenna tuner matches the transmitter
to the antenna when the SWR is lower than 3 : 1.
BASIC OPERATION
■ Basic transmit operation
Before transmitting, monitor your selected operating frequency to make sure transmitting won’t
cause interference to other stations on the same
frequency. It’s good Amateur practice to listen
first, and then, even if nothing is heard, ask “is
the frequency in use” once or twice, before you
being operating on that frequency.
D Transmitting
Before transmitting, monitor your selected operating
frequency to make sure transmitting won’t cause interference to other stations on the same frequency.
[TRANSMIT]
q Push [TRANSMIT] or [PTT] (microphone) to transmit.
• The main band’s [TX] indicator lights red.
• When the split operation is activated, the sub band’s
[TX] indicator lights.
w Push [TRANSMIT] again or release [PTT] (microphone) to return to receive.
✔ Adjusting the transmit output power
➥ Rotate [RF PWR].
• Adjustable range: 5 W to 100 W
(AM mode: 5 W to 40 W)
[RF POWER]
Increases
max. 100 W
(40 W for AM)
[TX] indicator
Decreases
min. 5 W
D Microphone gain adjustment
Before transmitting, monitor your selected operating
frequency to make sure transmitting won’t cause interference to other stations on the same frequency.
[METER]
q Push [METER] to select the ALC meter.
w Push [PTT] (microphone) to transmit.
• Talk into the microphone at your normal voice level.
e While talking into the microphone, rotate [MIC
GAIN] so that the ALC meter reading doesn’t go
outside the ALC zone.
ALC zone
Po
10
25 50
1 1.5
SWR
COMP
ALC
[MIC GAIN]
+ 20
+ 40
+ 60dB
100
2 3
20
10
dB
r Release [PTT] (microphone) to return to receive.
In addition, the transceiver can display the multi-function digital meter in the LCD display, which displays
all transmit meters simultaneously.
32
4
RECEIVE AND TRANSMIT
■ Operating SSB
q Push a band key to select the desired band.
w Push [SSB] to select LSB or USB.
[TRANSMIT] [TX] indicator [RX] indicator Band keys
• “LSB” or “USB” appears.
• Below 10 MHz LSB is automatically selected; above
10 MHz USB is automatically selected.
e Rotate the tuning dial to tune a desired signal.
• The S-meter indicates received signal strength when
signal is received.
[AF] [MIC GAIN] [SSB]
Tuning dial
r Rotate [AF] to set audio to a comfortable listening
level.
t Push [TRANSMIT] or [PTT] (microphone) to transmit.
• The TX indicator lights red.
y Speak into the microphone at your normal voice
level.
• Adjust the microphone gain with [MIC] at this step, if
necessary.
u Push [TRANSMIT] or release [PTT] (microphone) to
return to receive.
D Convenient functions for receive
• Preamp (p. 57)
➥ Push [P.AMP] several times to set the preamp
OFF, preamp 1 ON or preamp 2 ON.
• Noise reduction (p. 64)
➥ Push [NR] switch to turn the noise reduction ON
and OFF.
• “P.AMP1” or “P.AMP2” appears when the preamp 1 or
preamp 2 is set to ON, respectively. (depending on operating frequency band)
• Rotate [NR] control to adjust the noise reduction level.
• Noise reduction indicator (in [NR] switch) lights when
the noise reduction is set to ON.
• Attenuator (p. 57)
➥ Push [ATT] several times to set the attenuator in
6 dB steps.
• Notch filter (p. 64)
➥ Push [NOTCH] switch to turn the auto or manual
notch function ON and OFF.
• “ATT” and attenuation level appear when the attenuator is set to ON.
• Rotate [NOTCH] control to set the attenuating frequency for manual notch operation.
• Notch indicator (in [NOTCH] switch) lights when either
the auto or manual notch is set to ON.
• Noise blanker (p. 62)
➥ Push [NB] switch to turn the noise blanker ON
and OFF.
• Noise blanker indicator (in [NB] switch) lights when the
noise blanker is set to ON.
➥ Push [NB] for 1 sec. to enter the noise blanker
level set mode, then rotate tuning dial to adjust
the threshold level.
• Twin PBT (passband tuning) (p. 60)
➥ Rotate [TWIN PBT] controls (inner/outer).
• Push [PBT CLR] to clear the settings.
33
• AGC (auto gain control) (p. 59)
➥ Push [AGC] switch several times to select
AGC FAST, AGC MID or AGC SLOW.
➥ Push [AGC] for 1 sec. to enter the AGC set mode.
• Rotate tuning dial to adjust the time constant.
RECEIVE AND TRANSMIT
D Convenient functions for transmit
• Speech compressor (p. 67)
➥ Push [COMP] to turn the speech compressor ON
and OFF.
• VOX (voice operated transmit) (p. 65)
➥ Push [VOX] to turn the VOX function ON and
OFF.
• Pushing [COMP] for 1 sec. to select the compression
bandwidth from wide, middle and narrow.
• “VOX ON” appears when the VOX function is set to
ON.
• Transmit quality monitor (p. 69)
➥ Push [MONITOR] to turn the monitor function ON
and OFF.
• Audio tone control (p. 93)
➥ Push [EXIT/SET] for 1 sec. then [(F-1)LEVEL] to
enter level set mode. Select an item with [(F1)Y]/[(F-2)Z] then rotate the tuning dial to adjust
the audio tone.
• Monitor indicator (in [MONI] switch) lights when the
monitor function is set to ON.
➥ Push [EXIT/SET] for 1 sec. then [(F-1)LEVEL] to
enter level set mode. Select the monitor level item
with [(F-1)Y]/[(F-2)Z] then rotate the tuning dial
to adjust the monitor gain.
D About 5 MHz band operation (USA version only)
Operation on the 5 MHz band is allowed on 5 discrete
frequencies and must adhere to the following:
• USB mode
• Maximum of 50 watts ERP (Effective Radiated Power)
• 2.8 kHz bandwidth
IC-756PROIII Tuning
Frequency*
FCC Channel
Center Frequency*
5.33050 MHz
5.34650 MHz
5.36650 MHz
5.37150 MHz
5.40350 MHz
5.33200 MHz
5.34800 MHz
5.36800 MHz
5.37300 MHz
5.40500 MHz
To assist you in operating the 5 MHz band correctly
within the rules specified by the FCC, transmission
is impossible on any 5 MHz band frequency other
than the 5 frequencies indicated in the table above.
It is the operator’s responsibility to set all controls so
that the transmission in this band meets the stringent
conditions under which we may use these frequencies.
NOTE: We recommend that you store these frequencies, mode and filter settings into the memory
channel for easy recall.
*The channel center frequencies that are specified
by the FCC, show the center frequency of their
passband. However, the IC-756PROIII displays
carrier point frequency, so set 1.5 kHz below from
FCC channel center frequency.
34
4
RECEIVE AND TRANSMIT
■ Operating CW
q Push a band key to select the desired band.
w Push [CW/RTTY] to select CW.
[TRANSMIT] [TX] indicator [RX] indicator Band keys
• After CW mode is selected, push [CW/RTTY] for 1 sec.
to toggle between CW and CW-R modes.
• “CW” or “CW-R” appears.
e Rotate the tuning dial to simultaneously tune a desired signal and its side tone.
• The S-meter indicates received signal strength when
signal is received.
[AF] [KEY SPEED] [CW/RTTY]
Tuning dial
r Rotate [AF] to set audio to a comfortable listening
level.
t Push [TRANSMIT] to transmit.
• The TX indicator lights red.
y Use the electric keyer or paddle to key your CW signals.
• The power meter indicates transmittted CW output
power.
u Adjust CW speed with [KEY SPEED].
• Adjustable within 6-60 WPM.
i Push [TRANSMIT] to return to receive.
D Convenient functions for receive
• Preamp (p. 57)
➥ Push [P.AMP] several times to set the preamp
OFF, preamp 1 ON or preamp 2 ON.
• Noise reduction (p. 64)
➥ Push [NR] switch to turn the noise reduction ON
and OFF.
• “P.AMP1” or “P.AMP2” appears when the preamp 1 or
preamp 2 is set to ON, respectively. (depending on operating frequency band)
• Rotate [NR] control to adjust the noise reduction level.
• Noise reduction indicator (in [NR] switch) lights when
the noise reduction is set to ON.
• Attenuator (p. 57)
➥ Push [ATT] several times to set the attenuator in
6 dB steps.
• Notch filter (p. 64)
➥ Push [NOTCH] switch to turn the manual notch
function ON and OFF.
• “ATT” and attenuation level appear when the attenuator is set to ON.
• Rotate [NOTCH] control to set the attenuating frequency for manual notch operation.
• Notch indicator (in [NOTCH] switch) lights when the
manual notch is set to ON.
• Noise blanker (p. 62)
➥ Push [NB] switch to turn the noise blanker ON
and OFF.
• Noise blanker indicator (in [NB] switch) lights when the
noise blanker is set to ON.
➥ Push [NB] for 1 sec. to enter the noise blanker
level set mode, then rotate tuning dial to adjust
the threshold level.
• Twin PBT (passband tuning) (p. 60)
➥ Rotate [TWIN PBT] controls (inner/outer).
• Push [PBT CLR] to clear the settings.
35
• AGC (auto gain control) (p. 59)
➥ Push [AGC] switch several times to select
AGC FAST, AGC MID or AGC SLOW.
➥ Push [AGC] for 1 sec. to enter the AGC set mode.
• Rotate tuning dial to adjust the time constant.
• 1⁄4 function (p. 27)
➥ Push [1/4] to turn the 1⁄4 function ON and OFF.
RECEIVE AND TRANSMIT
D Convenient functions for transmit
• Break-in function (p. 66)
➥ Push [BK-IN] several times to select the break-in
OFF, semi break-in and full break-in.
• “BK-IN SEMI” or “BK-IN FULL” appears when the
semi break-in or full break-in function is set to ON, respectively.
D About CW reverse mode
CW-R (CW Reverse) mode receives CW signals with
a reverse side CW carrier point like that of LSB and
USB modes.
Use when interfering signals are near a desired signal
and you want to change the interference tone.
q Push [CW/RTTY] once or twice to select CW
mode.
w Push [CW/RTTY] for 1 sec. to select CW or CW-R
mode.
[CW/RTTY]
• Check the interfering tone.
Push
CW/RTTY
for 1 sec.
BFO
BFO
Interference Desired signal
Interference Desired signal
CW mode (LSB side)
CW-R mode (USB side)
D About CW pitch control
The received CW audio pitch and monitored CW
audio can be adjusted to suit your preference (300 to
900 Hz in 25 Hz steps) without changing the operating frequency.
➥ Rotate [CW PITCH] to suit your preference.
• Adjustable within 300 to 900 Hz in 25 Hz steps.
[CW PITCH]
The filter set mode screen graphically displays the
CW pitch operations. (See at left.)
FILTER
AGC
MID
CW
BK-IN
OFF
1/4
OFF
BW
450
700
950
PBT1
PBT2
FIL 1
FI
1.2k
FIL 2
FI
500
FIL 3
FI
250
DEF
36
4
RECEIVE AND TRANSMIT
D CW side tone function
When the transceiver is in the receive condition (and
the break-in function is OFF— p. 66) you can listen to
the tone of your CW signal without actually transmitting.
Tuning dial
This allows you to match your transmit signal exactly
to another station’s. This also convenient for CW
practice.
➥ Push [EXIT/SET] for 1 sec. then [(F-1)LEVEL] to
enter level set mode. Select an item with [(F1)Y]/[(F-2)Z] then rotate the tuning dial to adjust
the side tone level.
[(F-1)Y] [(F-2)Z] [EXIT/SET]
D About 137 kHz band operation (Europe, UK, Italy, Spain, France versions only)
137 kHz band, within 135.7 kHz to 137.8 kHz range,
operation in CW mode is optionally available with the
IC-756PROIII.
The RF signal from [XVERT] is used for the 137 kHz
band operation, and an external amplifier unit is necessary.
See the connection diagram below for reference.
• Connection diagram for 137 kHz band operation
Power amplifier with T/R switching unit
for 137 kHz
to [XVERT]
PA
BPF
or
LPF
to [SEND] (for transmit/receive control)
to [ACC(2)] pin 6*
*Transverter ON/OFF control signal related to the power amplifier
unit main power, if desired.
• ON: 2–13.8 V DC input (more than 10 kΩ impedance)
• OFF: Less than 2 V DC
37
RECEIVE AND TRANSMIT
■ Electronic CW keyer
The IC-756PROIII has a number of convenient functions for the electronic keyer that can be accessed
from the memory keyer menu.
[(F-1)]–[(F-4)]
q Push [EXIT/SET] several times, if necessary.
w Push [CW/RTTY] to select CW mode.
e Push [(F-3)KEYER] then [EXIT/SET] to select
memory keyer menu screen.
r Push one of the multi-function keys ([F-1] to [F-4]
to select the desired menu. See the diagram
below.
[CW/RTTY] [EXIT/SET]
• Push [EXIT/SET] to return to the previous indication.
ANT
BW 500
METER
Po
BPF
CW
CW
qw:pp
12:00
FIL2
qr.qpp.pp
21. 085. 00
P.AMP
SFT
T X VFO
VFO
USB
CW
FIL2
qr.qpp.pp
ATT
0FF
CW
21. 085. 00
AGC
MID
BK-IN
OFF
¡Memory keyer edit screen
ABC
1/4
OFF
SCOPE
F-1
VOICE
KEYER
F-2
F-3
MEMORY
SCAN
M2
ABC
F-4
¡Memory keyer send screen
M2
M1..M4
¡Contest number set mode
CFM TU
AGC
MID
QRZ?
M4
M4
M3
M2
-1
BK-IN
OFF
F-1
KEYER 001
Number Style
Coun t Up Trigger
Present Number
Normal
M2
001
1/4
OFF
é
¡Memory keyer menu screen
1/4
OFF
SPACE
F-2
EXIT/SET
BK-IN
OFF
DEL
CQ TEST CQ TEST DE ICOM ICOM
TEST
UR 5NN001 BK
M1
M1
AGC
MID
å
MEMORY
E M O R Y KEYER
KEYER
M3
1/4
OFF
QRZ?
M4
ç
BK-IN
OFF
CFM TU
M3
F-5
123
AGC
MID
MEMORY
E M O R Y KEYER
KEYER
CQ TEST CQ TEST DE ICOM ICOM
TEST
UR 5NN001 BK
M1
è
DEF
F-3
MEMORY KEYER
MEMORY
E M O R Y KEYER
K E Y E R MENU
MENU
SEND
SEND
Max.55
M a x . 5 5 Characters
C h a r a c t e r s ◊ 4ch
4ch
EDIT
EDIT
Memory
M e m o r y Editor
Editor
001
001
001
0 0 1 Style
S t y l e Contest
C o n t e s t Number
Number
¡Keyer set mode screen
CW
C W KEY
K E Y Memo-key,Elec-key,CW
M e m o - k e y , E l e c - k e y , C W Wave
W a v e Form
F o r m Set
Set
SEND
EDIT
001
F-1
F-2
F-3
CW KEY
F-4
AGC
MID
BK-IN
OFF
F-5
1/4
OFF
é
KEYER
E Y E R CW-KEY
CW-KEY
K e y e r Repeat
Keyer
R e p e a t Time
Time
Dot/Dash
o t / D a s h Ratio
Ratio
Rise
i s e Time
Time
Paddle
a d d l e Polarity
Polarity
Keyer
e y e r Type
Type
MIC
I C Up/Down
U p / D o w n Keyer
Keyer
è
2s
1:1:3.0
1:1:3.0
4ms
4ms
Normal
Normal
E L E C - K EY
ELEC-KEY
OFF
OFF
DEF
F-4
38
4
RECEIVE AND TRANSMIT
D Memory keyer send screen
Pre-set characters can be sent using the keyer send
menu. Contents of the memory keyer are set using
the edit menu.
[TRANSMIT]
[(F-1)M1]–[(F-4)M4]
[CW/RTTY]
AGC
MID
BK-IN
OFF
MEMORY KEYER
MEMORY
M2
CFM
M3
1/4
OFF
ICOM
ICOM
TU
QRZ?
M4
M1
DE
M2
M3
M4
q Push [EXIT/SET] several times, if necessary.
w Push [CW/RTTY] to select CW mode.
e Push [(F-3)KEYER] to select the memory keyer
screen.
r Push [TRANSMIT] to set the transceiver to transmit, or set the break-in function ON (p.60).
t Push [(F-1)M1] – [(F-4)M4] momentarily to transmit the contents one time; push these keys for 1
sec. to transmit the contents repeatedly.
• “M1”–“M4” are highlighted while transmitting.
• “ ” appears while transmitting repeatedly.
• Set the repeat interval of the memory keyer to 1, 2, 3,
10 or 30 sec. See the previous page for keyer set mode.
• To count down the contact number, push [(F-5)–1].
[EXIT/SET]
CQ TEST CQ TEST
TEST
UR 5NN001 BK
M1
• Transmitting
-1
For your information
When an external keypad is connected to the pin 3
and pin 7 of the [MIC] connecter, the programmed
contents, M1–M4, can be transmitted without opening the memory keyer screen.
See page 103 for details.
y Push [EXIT/SET] twice to exit the memory keyer
screen.
39
RECEIVE AND TRANSMIT
D Editing a memory keyer
The contents of the momory keyer memories can be
set using the memory keyer edit menu. The memory
keyer can memorize and re-transmit 4 CW key codes
for often-used CW sentences, contest number, etc.
Total capacity of the memory keyer is 70 characters
per memory channel.
[123]/[etc] [ABC] [(F-3)DEL] [(F-4)SPACE]
• Programming contents
q Push [EXIT/SET] several times, if necessary.
w Push [CW/RTTY] to select CW mode.
e Push [(F-3)KEYER] then [EXIT/SET] to select
keyer set mode.
r Push [(F-2)EDIT] to enter the keyer edit screen.
t Push [(F-5)M1..M4] several times to select the desired keyer memory channel.
y Select the desired character group by pushing the
character group keys ([ABC], [123] or [etc]) several
times.
• [etc] appears when [123] is pushed when “123” character group is selected.
• Selectabel characters (with the tuning dial);
Key selection
[(F-1)Ω]
[(F-2)≈] [EXIT/SET] [(F-5)M1..M4]
Selected
character
Character
group
keys
ABC
CQ TEST CQ TEST
TEST
UR 5NN001 BK
M2
CFM
M3
123
DE
ICOM
A to Z (capital leters)
123
0 to 9 (numbers)
etc
/ ? ^. ,@✽
ICOM
TU
QRZ?
M4
ç
ABC
KEYER EDIT
KEYER
M1
ABC
Editable characters
DEL
å
SPACE
M1..M4
Memory ch
select
• Pre-programmed contents
CH
Contents
M1
CQ TEST CQ TEST DE ICOM ICOM TEST
M2
UR 5NN✽ BK
M3
CFM TU
M4
QRZ?
NOTE:
“^” is used to transmit a following word with no
space such as AR. Put “^” before a text string
such as ^AR, and the string “ AR ” is sent with no
space.
“✱” is used to insert the CW contest number.
The contest number automatically increments
by 1. This function is only available for one
memory keyer channel at a time. Memory keyer
channel M2 used “✱” by default.
u Select the desired character by rotating the tuning
dial or by pushing the band key for number input.
• Push [(F-1)Ω] or [(F-2)≈] for cursor movement.
• Push [(F-3)DEL] to delete the selected character.
• Push [(F-4)SPACE] to input a space.
• “*” is for contact numbers and can be input for the
count up trigger channel (“ ” appears).
i Repeat step u until the desired contents are input.
o Push [(F-5)M1..M4] to select the next memory
channel and repeat step u for character input, if
desired.
!0 Push [EXIT/SET] twice to exit the keyer set mode.
40
4
RECEIVE AND TRANSMIT
D Contest number set mode
This menu is used to set the contest (serial) number
and count up trigger, etc.
[(F-3)DEL]
[(F-1)∫]
AGC
MID
BK-IN
OFF
[(F-2)√] [EXIT/SET]
KEYER 001
N u m b e r Style
Style
C o u n t UP
U P Trigger
Trigger
P r e s e n t Number
Number
Normal
ormal
M2
001
• Setting the contact (serial) number
Contact number can be automatically transmitted
from one of the memory keyer channels. The Morse
cut numbers can be used as the contact numbers.
The maximum number for contact numbers is 9999.
q Push [EXIT/SET] several times, if necessary.
w Push [CW/RTTY] to select CW mode.
e Push [(F-3)KEYER] then [EXIT/SET] to select
keyer set mode.
r Push [(F-3)001] to select contest number set
mode.
t Push [(F-1)∫] or [(F-2)√] to select the desired set
item.
• Push [(F-3)DEF] for 1 sec. to select the default condition or value.
y Push [EXIT/SET] twice to exit the keyer set mode.
1/4
OFF
é
è
DEF
Number Style (Number style)
This item sets the numbering system used for contest
(serial) numbers— normal or morse cut numbers.
Normal
190➜ANO
190➜ ANT
90➜ NT
90➜ NT
: Does not use morse cut number
(default)
: Sets 1 as A, 9 as N and 0 as O.
: Sets 1 as A, 9 as N and 0 as T.
: Sets 9 as N and 0 as O.
: Sets 9 as N and 0 as T.
Count Up Trigger (Count up trigger)
This selects which of the three memory slots will have
the contest serial number exchange. The count up
trigger allows the serial number automatically incremented after each complete serial number exchange
is sent.
• M1, M2, M3 and M4 can be set. (default: M2)
Present Number (Present number)
This item shows the current number for the count up
trigger channel set above.
41
• Rotate the tuning dial to change the number, or push
[(F-3)001CLR] for 1sec. to reset the current number
to 001.
RECEIVE AND TRANSMIT
D Keyer set mode
This set mode is used to set the CW side tone, memory keyer repeat time, dash weight, paddle specifications, keyer type, etc.
[(F-3)DEL]
• Setting the electronic keyer
q Push [EXIT/SET] several times, if necessary.
w Push [CW/RTTY] to select CW mode.
e Push [(F-3)KEYER] then [EXIT/SET] to select
keyer set mode.
r Push [(F-4)CW KEY] to select memory keyer set
mode.
t Push [(F-1)∫] or [(F-2)√] to select the desired set
item.
y Set the desired condition using the tuning dial.
• Push [(F-3)DEF] for 1 sec. to select a default condition
or value.
[(F-1)∫]
AGC
MID
BK-IN
OFF
1/4
OFF
[(F-2)√] [EXIT/SET]
u Push [EXIT/SET] twice to normal screen.
KEYER CW-KEY
KEYER
K e y e r Repeat
R e p e a t Time
Time
D o t / Dash
D a s h Ratio
Ratio
R i s e Time
Time
P a d d le
l e Polarity
Polarity
K e y e r Type
Type
M I C Up/Down
U p / D o w n Keyer
Keyer
é
è
2s
2s
1:1:3.0
:1:3.0
4ms
4ms
Normal
Normal
ELEC-KEY
ELEC-KEY
OFF
OFF
DEF
Keyer Repeat Time
(Keyer repeat time)
When sending CW using the repeat timer, this item
sets the time between transmission.
• 1 to 60 sec. in 1 sec. steps can be selected.
(default: 2 sec.)
Dot/Dash Ratio (Dot/Dash ratio)
This item sets the dot/dash ratio.
Keying weight example: Morse code “K”
• 1 : 1 : 2.8 to 1 : 1 : 4.5 can be set.
• Check the ratio with side tone in CW mode.
• Push [(F-3)DEF] to select a default ratio of 1 : 1 : 3.0.
DOT (Fixed*)
Weight setting:
1:1:3 (default)
DASH
DASH
Weight setting:
Adjusted
Adjustable range
SPACE (Fixed*)
*SPACE and DOT length can be adjusted with
[KEY SPEED] only.
42
4
RECEIVE AND TRANSMIT
D Keyer set mode (continued)
Rise Time (Rise time)
This item sets the envelop time period which the output power becomes the set transmit power.
• 2, 4, 6, or 8 msec. can be selected. (default: 4 msec.)
• About rise time
Key action
Tx
Rx
Set Tx power level
Tx output power
Rise time
Time
Paddle Polarity (Paddle polarity)
This item sets the paddle polarity.
• Normal and reverse pooarity can be selected.
Keyer Type (Keyer type)
This item selects the keyer type for [.ELEC-KEY] connector on the front panel.
MIC Up/Down Keyer
(Microphone’s [UP]/[DN] switches keyer)
This item allows you to set the microphone [UP]/[DN]
switches to be used as a paddle.
43
• ELEC-KEY, BUG-KEY and Straight key can be selected. (default: ELEC-KEY]
• ON : [UP]/[DN] switches can be used for CW.
• OFF: [UP]/[DN] switches cannot be used for CW.
NOTE: When “ON” is selected, the frequency and
memory channel cnanot be changed using the
[UP]/[DN] switches.
RECEIVE AND TRANSMIT
■ Operating RTTY (FSK)
[TRANSMIT] [TX] indicator [RX] indicator Band keys
When using your RTTY terminal or TNC, consult the
manual that comes with the RTTY terminal or TNC.
q Push a band key to select the desired band.
w Push [CW/RTTY] to select RTTY.
• After RTTY mode is selected, push [CW/RTTY] for 1
sec. to toggle between RTTY and RTTY-R modes.
• “RTTY” or “RTTY-R” appears.
e Push [(F-3)DECODE] to display the decoder
screen.
• The IC-756PROIII has a Baudot decoder.
[AF]
[CW/RTTY]
Tuning dial
r Rotate the tuning dial to simultaneously tune a desired signal.
• The S-meter indicates received signal strength when
signal is received.
t Rotate [AF] to set audio to a comfortable listening
level.
y Push [TRANSMIT] to transmit.
• The TX indicator lights red.
u Type from the connected PC’s keyboard to enter
the contents that you want to transmit.
• The text color will be changed when transmitted.
• Press one of [F-1] to [F-4] to transmit the TX memory
contents.
i Push [TRANSMIT] to return to receive.
D Convenient functions for receive
• Preamp (p. 57)
➥ Push [P.AMP] several times to set the preamp
OFF, preamp 1 ON or preamp 2 ON.
• “P.AMP1” or “P.AMP2” appears when the preamp 1 or
preamp 2 is set to ON, respectively. (depending on operating frequency band)
• Attenuator (p. 57)
➥ Push [ATT] several times to set the attenuator in
6 dB steps.
• “ATT” and attenuation level appear when the attenuator is set to ON.
• Noise blanker (p. 62)
➥ Push [NB] switch to turn the noise blanker ON
and OFF.
• Noise blanker indicator (in [NB] switch) lights when the
noise blanker is set to ON.
➥ Push [NB] for 1 sec. to enter the noise blanker
level set mode, then rotate tuning dial to adjust
the threshold level.
• Twin PBT (passband tuning) (p. 60)
➥ Rotate [TWIN PBT] controls (inner/outer).
• Push [PBT CLR] to clear the settings.
• Noise reduction (p. 64)
➥ Push [NR] switch to turn the noise reduction ON
and OFF.
• Rotate [NR] control to adjust the noise reduction level.
• Noise reduction indicator (in [NR] switch) lights when
the noise reduction is set to ON.
• AGC (auto gain control) (p. 59)
➥ Push [AGC] switch several times to select
AGC FAST, AGC MID or AGC SLOW.
➥ Push [AGC] for 1 sec. to enter the AGC set mode.
• Rotate tuning dial to adjust the time constant.
• 1⁄4 function (p. 27)
➥ Push [1/4] to turn the 1⁄4 function ON and OFF.
44
4
RECEIVE AND TRANSMIT
D About RTTY reverse mode
Received characters are occasionally garbled when
the receive signal is reversed between MARK and
SPACE. This reversal can be caused by incorrect
TNC connections, settings, commands, etc.
To receive a reversed RTTY signal correctly, select
RTTY-R (RTTY Reverse) mode.
Normal
170 Hz
• Check the receive signal.
Reverse
2125 Hz
Space Mark
q Push [CW/RTTY] once or twice to select RTTY
mode.
w Push [CW/RTTY] for 1 sec. to select RTTY or
RTTY-R mode.
BFO
2125 Hz
BFO
170 Hz
Space
Mark
D RTTY filter/Twin peak filter
The transceiver has 5 RTTY filters in addition to normal IF filters. The passband width can be selected
from 1 kHz, 500 Hz, 350 Hz, 300 Hz and 250 Hz.
When the RTTY filter is turned ON, the RTTY tuning
meter can be used. (p. 47)
i Push [EXIT/SET] to exit the RTTY filter set mode.
[RTTY FIL]
Moreover, the twin peak filter changes the receive frequency response by boosting 2 particular frequencies
(2125 and 2295 Hz) for better copying of desired RTTY
signals.
[CW/RTTY]
q Push [CW/RTTY] once or twice to select RTTY
mode.
w Push [RTTY FIL] to turn the RTTY filter ON.
• “TPF” appears when the twin peak filter is turned ON.
• RTTY filter selection
q Push [EXIT/SET] several times to close a multifunction screen, if necessary.
w Select RTTY mode.
e Push [RTTY FIL] for 1 sec. to enter RTTY filter set
mode.
r Push [(F-1)Y] to select band width item.
t Rotate the tuning dial to select the RTTY filter
width from 1 kHz, 500 Hz, 350 Hz, 300 Hz and
250 Hz.
• Push [(F-3)DEF] for 1 sec. to select a default value.
y Push [(F-2)Z] to select twin peak filter item.
• The received audio volume may become greater when
the twin peak filter is turned ON.
u Rotate the tuning dial to turn the twin peak filter
function ON or OFF.
45
TPF indicator
ANT
METER
Po
BW 350
T X VFO
SFT
RTTY
TPF
qw:pp
FIL2
qr.qpp.pp
21.076.50
CW
RECEIVE AND TRANSMIT
D Functions for the RTTY decoder indication
The transceiver has an RTTY decoder for Baudot
(mark freq.: 2125 Hz, shift freq.: 170 Hz, 45 bps).
An external terminal unit (TU) or terminal node controller (TNC) is not necessary for receiving a Baudot
signal.
q Push [EXIT/SET] several times to close a multifunction screen, if necessary.
w Push [CW/RTTY] to select RTTY mode.
e Push [(F-3)DECODE] to turn the RTTY decoder
ON.
r If the RTTY filter is turned OFF, push [RTTY FIL]
to turn the function ON.
• The RTTY decoder does not function when the RTTY
filter is turned OFF.
t Push [(F-2)HOLD/CLR] momentarily to freeze the
current screen.
• “HOLD” appears while the function is in use.
y Push [(F-5)WIDE] to toggle the normal or wide
screen space.
ANT
TX
• RTTY decoder screen appears.
METER
Po
RTTY DECODE
P.AMP
AGC
MID
RTTY
FIL
ON
THRESHOLD

HLD/CLR
TX MEM
SFT
qw:pp
V F O qr≥qot≥pp
VFO
14.100.00
RTTY
FIL2
FIL
RTTY
FIL2
FIL
RTTY DECODE
**** RTTY Decode Monitor ****
45bps BAUDOT
Mark=2125, Shift=170
UnShift On Space support (SET-OTHERS)
New Line Code selectable (SET-OTHERS)
If RTTY-FIL is OFF, Please turn ON.
--------------------------------------------
1/4
OFF
BW 350
ADJ
ATT
OFF
AGC
MID
**** RTTY Decode Monitor ****
45bps BAUDOT
Mark=2125, Shift=170
UnShift On Space support (SET-OTHERS)
New Line Code selectable (SET-OTHERS)
If RTTY-FIL is OFF, Please turn ON.
-------------------------------------------CQ CQ CQ THIS IS JA3YUA JA3YUA OSAKA JAPAN
CQ CQ CQ THIS IS JA3YUA JA3YUA OSAKA JAPAN
CQ CQ CQ THIS IS JA3YUA JA3YUA OSAKA JAPAN
WIDE
RTTY
FIL
ON
1/4
OFF

THRESHOLD
HLD/CLR
TX MEM
ADJ
WIDE
u Push [(F-2)HOLD/CLR] for 1 sec. to clear the displayed characters.
i Push [EXIT/SET] to exit the RTTY decoder screen.
D Setting the decoder threshold level
Adjust the RTTY decoder threshold level if some
characters are displayed when no signal is received.
AGC
MID
RTTY
FIL
ON
1/4
OFF
RTTY DECODE
**** RTTY Decode Monitor ****
45bps BAUDOT
Mark=2125, Shift=170
UnShift On Space support (SET-OTHERS)
New Line Code selectable (SET-OTHERS)
If RTTY-FIL is OFF, Please turn ON.
-------------------------------------------ADJ
DEF
THRESHOLD
ADJ
q Call up the RTTY decoder screen as described at
left.
w Push [(F-4)ADJ] to select the threshold level setting condition.
e Rotate the tuning dial to adjust the RTTY decoder
threshold level.
• Push [(F-3)DEF] to select the default condition.
r Push [EXIT/SET] to exit the RTTY decoder screen.
WIDE
The UnShift On Space (USOS) function and new
line code can be set in the RTTY set mode. (p. 49)
46
4
RECEIVE AND TRANSMIT
D RTTY memory transmission
Pre-set characters can be sent using the RTTY memory. Contents of the memory are set using the edit
menu.
[(F-1)RT1]–[(F-4)RT4]
[(F-1)RT5]–[(F-4)RT8]
ANT
BW 350
RT1
12:00
FIL2
CW
21. 085. 00
VFO
USB
FIL2
qr.qpp.pp
ATT
0FF
1/4
OFF
qw:pp
RTTY
RTTY
P.AMP
RTTY
FIL
ON
• The selected memory contents will be transmitted immediately.
qr.qpp.pp
METER
Po
AGC
MID
SFT
T X VFO
TX
[EXIT/SET] [(F-5)1-4/5-8]
q Push [EXIT/SET] several times to close a multifunction screen, if necessary.
w Push [CW/RTTY] to select RTTY mode.
e Push [(F-3)DECODE] to turn the RTTY decoder
ON.
r Push [(F-3)TX MEM] to select RTTY memory
screen.
t Push [(F-5)1-4/5-8] to select memory bank then
push one of the function keys [(F-1)RT1] to [(F4)RT4] or [(F-1)RT5] to [(F-4)RT8].
RT1
RT2
RT3
RT4
CW
21. 085. 00
DE
RTTY MEMORY
I C O M ICOM
ICOM
ICOM K
DE
ICOM
ICOM
ICOM
ICOM
ICOM K
ICOM
Q SL
SL
UR
UR
599-599
599-599
Q SL
SL
DE
DE
ICOM
ICOM
RT2
RT3
BK
BK
ICOM
ICOM
UR
UR
RT4
599-599
599-599
BK
BK
1-4/5-8
D RTTY tuning meter
The transceiver has an RTTY tuning indicator to be
tuned correctly and easily.
The RTTY tuning meter is automatically displayed
when the RTTY filter is turned ON.
q Push [CW/RTTY] to select RTTY mode.
w Push [RTTY FIL] to activate the RTTY filter and
RTTY tuning meter.
47
RTTY tuning meter
ANT
BW 350
TX
TX
METER
Po
ATT
OFF
RTTY
FIL2
qr.qot.pp
14.100.00
P.AMP
qw:pp
SFT
VFO
VFO
USB
USB
FIL2
qr.wpt.pp
14.100.00
USB
RECEIVE AND TRANSMIT
D Editing RTTY memory
The contents of the RTTY memories can be set using
the memory edit menu. The memory can memorize
and re-transmit 8 RTTY contents for often-used RTTY
sentences. Total capacity of the memory is 70 characters per memory channel.
[(F-3)DEL] [(F-4)SPACE]
[123]/[etc] [ABC]
• Programming contents
q Push [EXIT/SET] several times, if necessary.
w Push [CW/RTTY] to select RTTY mode.
e Push [(F-3)DECODE] then [(F-1)MENU1] to select
the RTTY decode menu 2.
r Push [(F-2)EDIT] to enter the RTTY memory edit
screen.
t Push [(F-5)RT1..8] several times to select the desired memory channel.
y Select the desired character group by pushing the
character group keys ([ABC], [123] or [etc]) several
times.
• [etc] appears when [123] is pushed when “123” character group is selected.
• Selectabel characters (with the tuning dial);
[(F-1)Ω]
[(F-2)≈] [EXIT/SET] [(F-5)RT1..8]
Key selection
ABC
Selected
character
Character
group
keys
ABC
RT1
RT1
RT2
RT2
ABC
RT3
RT3
123
RT4
RT4
ç
DE
DE
R T T Y MEMORY
RTTY
M E M O R Y EDIT
EDIT
ICOM
C O M ICOM
ICOM K
DE
DE
ICOM
ICOM
ICOM
ICOM
UR
UR
599-599
599-599
QSL
QSL
DE
DE
ICOM
ICOM
UR
UR
599-599
599-599
SPACE
BK
BK
etc
/ ? ^. ,@✽
RT1..8
Memory ch
select
• Pre-programmed contents
CH
0 to 9 (numbers)
BK
BK
ICOM
ICOM
DEL
å
A to Z (capital leters)
123
ICOM K
ICOM
QSL
QSL
Editable characters
Contents
RT1 ↵DE ICOM ICOM K↵
RT2 ↵DE ICOM ICOM ICOM K↵
RT3 ↵QSL UR 599–599 BK↵
RT4 ↵QSL DE ICOM ICOM UR 599–599 BK↵
u Select the desired character by rotating the tuning
dial or by pushing the band key for number input.
• Push [(F-1)Ω] or [(F-2)≈] for cursor movement.
• Push [(F-3)DEL] to delete the selected character.
• Push [(F-4)SPACE] to input a space.
i Repeat step u until the desired contents are input.
o Push [(F-5)RT1..8] to select the next memory
channel and repeat step u for character input, if
desired.
!0 Push [EXIT/SET] to set the contents and exit
RTTY memory edit screen.
RT5 ↵73 GL SK↵
RT6 ↵CQ CQ CQ DE ICOM ICOM ICOM K↵
RT7 (blank)
RT8 (blank)
48
4
RECEIVE AND TRANSMIT
D RTTY decoder set mode
This set mode is used to set the decode USOS function, etc.
[(F-3)DEL]
• Setting the contents
q Push [EXIT/SET] several times, if necessary.
w Push [CW/RTTY] to select RTTY mode.
e Push [(F-3)DECODE] then [(F-1)MENU1] to select
RTTY decode menu 2.
r Push [(F-4)SET] to select RTTY decode set mode.
t Push [(F-1)∫] or [(F-2)√] to select the desired set
item.
y Set the desired condition using the tuning dial.
• Push [(F-3)DEF] for 1 sec. to select a default condition
or value.
[(F-1)∫]
AGC
MID
RTTY
FIL
ON
[(F-2)√] [EXIT/SET]
u Push [EXIT/SET] to exit from set mode.
R T T Y D E C O D E SET
RTTY
SET
R T T Y D e c o de
d e USOS
USOS
R T T Y D e c o de
d e New
N e w Line
L i n e Code
Code
R T T Y T X U SOS
SOS
ON
CR,LF,CR+LF
CR,LF,CR+LF
ON
ON
1/4
OFF
é
è
DEF
RTTY Decode USOS
This item selects the USOS (UnShift On Space) function of the internal RTTY decoder.
ON
OFF
Decode as letter code
(default)
Decode as character code
RTTY Decode New Line Code
This item selects the new line code of the internal
RTTY decoder.
CR : Carriage Return
LF : Line Feed
CR,LF,CR+LF
CR+LF
CR, LF and CR+LF
(default)
CR+LF only
ON
OFF
Inserts FIGS
(default)
Not insert FIGS
RTTY TX USOS
This item selects the FIGS insertion even changing
from LTRS to FIGS does not necessary when sending a numeral or symbol character agter a space.
49
RECEIVE AND TRANSMIT
■ Operating AM
q Push a band key to select the desired band.
w Push [AM/FM] to select AM.
[TRANSMIT] [TX] indicator [RX] indicator Band keys
• “AM” indicator appears.
• After AM mode is selected, push [AM/FM] to toggle between AM and FM modes.
e Rotate the tuning dial to tune a desired frequency.
• The S-meter indicates received signal strength when
signal is received.
[AF] [MIC GAIN]
[AM/FM]
Tuning dial
r Rotate [AF] to set audio to a comfortable listening
level.
t Push [TRANSMIT] or [PTT] (microphone) to transmit.
• The TX indicator lights red.
y Speak into the microphone at your normal voice
level.
• Adjust the microphone gain with [MIC] at this step, if
necessary.
u Push [TRANSMIT] or release [PTT] (microphone) to
return to receive.
D Convenient functions for receive
• Preamp (p. 57)
➥ Push [P.AMP] several times to set the preamp
OFF, preamp 1 ON or preamp 2 ON.
• Noise reduction (p. 64)
➥ Push [NR] switch to turn the noise reduction ON
and OFF.
• “P.AMP1” or “P.AMP2” appears when the preamp 1 or
preamp 2 is set to ON, respectively. (depending on operating frequency band)
• Rotate [NR] control to adjust the noise reduction level.
• Noise reduction indicator (in [NR] switch) lights when
the noise reduction is set to ON.
• Attenuator (p. 57)
➥ Push [ATT] several times to set the attenuator in
6 dB steps.
• Notch filter (p. 64)
➥ Push [NOTCH] switch to turn the auto or manual
notch function ON and OFF.
• “ATT” and attenuation level appear when the attenuator is set to ON.
• Rotate [NOTCH] control to set the attenuating frequency for manual notch operation.
• Notch indicator (in [NOTCH] switch) lights when either
the auto or manual notch is set to ON.
• Noise blanker (p. 62)
➥ Push [NB] switch to turn the noise blanker ON
and OFF.
• Noise blanker indicator (in [NB] switch) lights when the
noise blanker is set to ON.
➥ Push [NB] for 1 sec. to enter the noise blanker
level set mode, then rotate tuning dial to adjust
the threshold level.
• AGC (auto gain control) (p. 59)
➥ Push [AGC] switch several times to select
AGC FAST, AGC MID or AGC SLOW.
➥ Push [AGC] for 1 sec. to enter the AGC set mode.
• Rotate tuning dial to adjust the time constant.
• Twin PBT (passband tuning) (p. 62)
➥ Rotate [TWIN PBT] controls (inner/outer).
• Push [PBT CLR] to clear the settings.
D Convenient functions for transmit
• Transmit quality monitor (p. 59)
➥ Push [MONITOR] to turn the monitor function ON
and OFF.
• VOX (voice operated transmit) (p. 65)
➥ Push [VOX] to turn the VOX function ON and
OFF.
• Monitor indicator (in [MONI] switch) lights when the
monitor function is set to ON.
• “VOX ON” appears when the VOX function is set to
ON.
➥ Push [EXIT/SET] for 1 sec. then [(F-1)LEVEL] to
enter level set mode. Select the monitor level item
with [(F-1)Y]/[(F-2)Z] then rotate the tuning dial
to adjust the monitor gain.
• Audio tone control (p. 93)
➥ Push [EXIT/SET] for 1 sec. then [(F-1)LEVEL] to
enter level set mode. Select an item with [(F1)Y]/[(F-2)Z] then rotate the tuning dial to adjust
the audio tone.
50
4
RECEIVE AND TRANSMIT
■ Operating FM
q Push a band key to select the desired band.
w Push [AM/FM] to select FM.
[TRANSMIT] [TX] indicator [RX] indicator Band keys
• “FM” indicator appears.
• After FM mode is selected, push [AM/FM] to toggle between FM and AM modes.
e Rotate the tuning dial to tune a desired frequency.
• The S-meter indicates received signal strength when
signal is received.
• 10 kHz tuning step is preset for FM mode.
[AF] [MIC GAIN]
[AM/FM]
Tuning dial
r Rotate [AF] to set audio to a comfortable listening
level.
t Push [TRANSMIT] or [PTT] (microphone) to transmit.
• The TX indicator lights red.
y Speak into the microphone at your normal voice
level.
• Adjust the microphone gain with [MIC] at this step, if
necessary.
u Push [TRANSMIT] or release [PTT] (microphone) to
return to receive.
D Convenient functions for receive
• Preamp (p. 57)
➥ Push [P.AMP] several times to set the preamp
OFF, preamp 1 ON or preamp 2 ON.
• Notch filter (p. 64)
➥ Push [NOTCH] switch to turn the auto notch function ON and OFF.
• “P.AMP1” or “P.AMP2” appears when the preamp 1 or
preamp 2 is set to ON, respectively. (depending on operating frequency band)
• Rotate [NOTCH] control to set the attenuating frequency for manual notch operation.
• Notch indicator (in [NOTCH] switch) lights when the
auto notch is set to ON.
• Attenuator (p. 57)
➥ Push [ATT] several times to set the attenuator in
6 dB steps.
• “ATT” and attenuation level appear when the attenuator is set to ON.
D Convenient functions for transmit
• Transmit quality monitor (p. 64)
➥ Push [MONITOR] to turn the monitor function ON
and OFF.
• VOX (voice operated transmit) (p. 65)
➥ Push [VOX] to turn the VOX function ON and
OFF.
• Monitor indicator (in [MONI] switch) lights when the
monitor function is set to ON.
• “VOX ON” appears when the VOX function is set to
ON.
➥ Push [EXIT/SET] for 1 sec. then [(F-1)LEVEL] to
enter level set mode. Select the monitor level item
with [(F-1)Y]/[(F-2)Z] then rotate the tuning dial
to adjust the monitor gain.
51
• Audio tone control (p. 93)
➥ Push [EXIT/SET] for 1 sec. then [(F-1)LEVEL] to
enter level set mode. Select an item with [(F1)Y]/[(F-2)Z] then rotate the tuning dial to adjust
the audio tone.
RECEIVE AND TRANSMIT
■ Repeater operation
A repeater amplifies received signals and retransmits
them at a different frequency. When using a repeater,
the transmit frequency is shifted from the receive frequency by an offset frequency. A repeater can be accessed using split frequency operation with the shift
frequency set to the repeater’s offset frequency.
For accessing a repeater which requires a repeater
tone, set the repeater tone frequency in set mode
as described below.
q Set the offset frequencies (HF, 50 MHz) and turn
ON the quick split function in set mode (others) in
advance. (p. 69)
w Push [VFO/MEMO] to select VFO mode.
ANT
BW 2.4k SFT
TX
TX
VFO
VFO
USB
VOX
OFF
REPEATER TONE
88.5Hz
T-SQL TONE
88.5Hz
TONE
OFF
USB
é
FIL2
14.100.00
USB
è
T-SCAN
DEF
t Push [EXIT/SET] to exit tone set mode.
e Push the desired band key.
r Push [AM/FM] several times to select FM mode.
t Set the receive frequency (repeater output frequency).
BW
TX
TX
15k SFT
VFO
qw:pp
FM
FIL2
wo.yip.pp
METER
Po
14.100.00
P.AMP
VFO
USB
USB
(Unit: Hz)
Available repeater tones
67.0
69.3
71.9
74.4
77.0
79.7
82.5
085.4
088.5
091.5
094.8
097.4
100.0
103.5
107.2
110.9
114.8
118.8
123.0
127.3
131.8
136.5
141.3
146.2
151.4
156.7
159.8
162.2
165.5
167.9
171.3
173.8
177.3
179.9
183.5
186.2
189.9
192.8
196.6
199.5
203.5
206.5
210.7 254.1
218.1
225.7
229.1
233.6
241.8
250.3
FIL2
qr.wpt.pp
ATT
OFF
14.100.00
USB
CONVENIENT
y Push [SPLIT] for 1 sec. to start repeater operation.
• Repeater tone is turned ON automatically.
• Shifted transmit frequency and “TX” appear in the sub
readout.
• The transmit frequency can be monitored while pushing
[XFC] or using dualwatch.
BW
15k SFT
VFO
qw:pp
FM
Store repeater tone frequencies and ON/OFF settings
in memory channels for easy recall.
FIL2
TONE
wo.yip.pp
METER
Po
ATT
OFF
TONE FREQUENCY
AGC
FAST
qr.wpt.pp
ATT
OFF
P.AMP
q Select FM mode.
w Push [TONE] for 1 sec. to enter tone set mode.
e Push [(F-1)∫] to select the repeater tone item.
r Rotate the tuning dial to select the desired repeater tone frequency.
FIL2
14.100.00
P.AMP
ANT
Each memory channel can store an independent setting.
wq.wop.pp
METER
Po
ANT
Some repeaters require subaudible tones to be accessed. Subaudible tones are superimposed over
your normal signal and must be set in advance. The
transceiver has 50 tones from 67.0 Hz to 254.1 Hz.
qw:pp
USB
• Setting the repeater tone
14.100.00
USB
SPLIT
SPLIT
TX
TX
VFO
FM
FIL2
TONE
wo.tip.pp
14.100.00
Shifted frequency appears.
USB
Tone encoder is automatically turned ON.
u Push and hold [PTT] to transmit; release [PTT] to
receive.
i To return to simplex, push [SPLIT] momentarily to
clear the sub display.
52
4
RECEIVE AND TRANSMIT
■ Tone squelch operation
The tone squelch opens only when receiving a signal
containing a matching subaudible tone. You can
silently wait for calls from group members using the
same tone.
q Push [VFO/MEMO] to select VFO mode.
ANT
BW 2.4k SFT
TX
TX
VFO
qw:pp
USB
FIL2
wq.wop.pp
METER
Po
14.100.00
P.AMP
VFO
USB
USB
14.100.00
15k SFT
BW
TX
TX
P.AMP
ATT
OFF
VFO
VOX
OFF
USB
qw:pp
FM
FIL2
TSQL
wo.yip.pp
14.100.00
VFO
FM
FIL2
USB
TSQL
wo.tip.pp
14.100.00
TONE FREQUENCY
AGC
FAST
USB
t When the received signal includes a matching
tone, squelch opens and the signal can be heard.
• When the received signal’s tone does not match, tone
squelch does not open, however, the S-indicator shows
signal strength.
• To open the squelch manually, push [XFC].
y Operate the transceiver in the normal way.
u To cancel the tone squelch, push [TONE] to clear
“TSQL.”
53
q Select FM mode.
w Push [TONE] for 1 sec. to enter tone set mode.
e Push [(F-2)√] to select the tone squelch tone item.
r Rotate the tuning dial to select the desired tone
squelch frequency.
FIL2
w Push the desired band key.
e Push [AM/FM] several times to select FM mode.
r Push [TONE] several times until “TSQL” appears
in the function display.
METER
Po
The transceiver has 50 tones from 67.0 Hz to
254.1 Hz.
qr.wpt.pp
ATT
OFF
ANT
• Setting the tone squelch tone
REPEATER TONE
88.5Hz
T-SQL TONE
88.5Hz
TONE
OFF
é
è
T-SCAN
DEF
t Push [EXIT/SET] to exit tone set mode.
(Unit: Hz)
Available tone squelch tones
67.0
69.3
71.9
74.4
77.0
79.7
82.5
085.4
088.5
091.5
094.8
097.4
100.0
103.5
107.2
110.9
114.8
118.8
123.0
127.3
131.8
136.5
141.3
146.2
151.4
156.7
159.8
162.2
165.5
167.9
171.3
173.8
177.3
179.9
183.5
186.2
189.9
192.8
196.6
199.5
203.5
206.5
210.7 254.1
218.1
225.7
229.1
233.6
241.8
250.3
CONVENIENT
Store tone squelch frequencies and ON/OFF settings
in memory channels for easy recall.
RECEIVE AND TRANSMIT
■ Data mode (SSTV/PSK31) operation
[TRANSMIT] [TX] indicator [RX] indicator Band keys
When operating SSTV or PSK31 with your PC software, consult the manual that comes with the software.
q Connect a PC to the transceiver. (p. 19)
w Push a band key to select the desired band.
e Push [SSB] or [AM/FM] to select the desired operating mode.
r Push the same key for 1 sec. to turn data mode ON.
• “-D” indicator additionally appears.
[AF] [MIC GAIN]
[AM/FM]
Tuning dial
t Rotate the main dial to tune into the desired signal
and decoded correctly.
• Also use the tuning indicator of the software.
• During SSB data mode, 1⁄4 tuning function can be used
for critical tuning.
y Operate the PC (software) to transmit.
• When operating in SSB data mode, adjust the AF output
level from PC so that the ALC meter reading doesn’t go
outside the ALC zone.
NOTE: When SSB data mode is selected, the audio
input from the [ACC1] (pin 6) is used for transmission instead of [MIC]’s.
The fixed condition is used for SSB data transmission as follow.
• [COMP]
: OFF
• Tx bandwidth
: MID
• Tx Tone (Bass)
:0
• Tx Tone (Trebles) : 0
2325 Hz
200 Hz
2125 Hz
✔ For your information
Carrier point frequency is displayed when SSB data
mode is selected.
See the diagram left for the tone-pair example.
Carrier point
(displayed frequency)
54
5
FUNCTION FOR RECEIVE
■ Spectrum scope screen
This function allows you to display the relative
strengths of signals around the center frequency. The
span can be set to ±12.5 kHz, ±25 kHz, ±50 kHz and
±100 kHz. Ideal for monitoring band conditions in an
instant.
q Push [EXIT/SET] several times to close a multifunction screen, if necessary.
w Push [(F-1)SCOPE] to select the scope screen.
ANT
BW 2.4k SFT
TX
TX
VFO
qw:pp
USB
FIL2
qr.qot.pp
METER
Po
14.100.00
P.AMP
VFO
USB
USB
FIL2
qr.wpq.pp
ATT
OFF
14.100.00
SPECTRUM
-12.5k
AGC
MID
The spectrum scope shows the transmit signal waveform while transmitting. This can be deactivated if desired.
When “OFF” is selected, the spectrum scope holds
the received waveform while transmitting and does
not show the transmit waveform.
q Call up the scope screen as described at left.
w Push [(F-5)SET] to select the spectrum scope set
mode.
e Push [(F-1)∫] to select the “Scope during Tx” item.
r Rotate the tuning dial to display the spectrum
scope while transmitting or not.
USB
+12.5k
SCOPE
Grid
2.5k
10dB
AGC
MID
VOX
OFF
VOX
OFF
COMP
OFF
WIDE
COMP
OFF
WIDE
SPAN
HOLD
MARKER
ATT
SET
e Push [(F-1)SPAN] several times to select the
scope span.
r Push [(F-2)ATT] several times to activate an attenuator or turn the attenuator OFF.
• 10, 20 and 30 dB attenuators are available.
t Push [(F-3)MARKER] several times to select the
marker (sub readout or transmit frequency) or turn
the marker OFF.
• “TX MARKER” displays the marker at the transmit frequency.
• “SUB MARKER” displays the marker at the sub readout
frequency.
ANT
BW 2.4k SFT
TX
TX
METER
Po
VFO
VOX
OFF
COMP
OFF
WIDE
SPAN
FIL2
14.100.00
VFO
USB
-12.5k
SPECTRUM
è
ON
ON
DEF
t Push [EXIT/SET] to exit spectrum scope set mode.
• Maximum level hold function
The spectrum scope shows the peak level holding
function. Peak levels are displayed in the background
of the current spectrum in a different color until the receive frequency changes. This can be deactivated if
desired.
q Call up the scope screen as described at left.
w Push [(F-5)SET] to select the spectrum scope set
mode.
e Push [(F-2)√] to select the “Max Hold” item.
r Rotate the tuning dial to turn the peak level holding
function ON or OFF.
AGC
MID
FIL2
14.100.00
é
SCOPE SET
Scope during Tx
Max Hold
USB
qr.wpq.pp
ATT
OFF
AGC
MID
qw:pp
USB
qr.qot.pp
P.AMP
SCOPE SET
Scope during Tx
Max Hold
ON
ON
VOX
OFF
USB
SCOPE
+12.5k
Grid
2.5k
10dB
COMP
OFF
WIDE
é
ATT
10dB
SUB
MARKER
è
DEF
t Push [EXIT/SET] to exit spectrum scope set mode.
HOLD
ATT
MARKER
HOLD
Appears when the
Sub readout
marker is out of range. or TX marker
SET
Appears when the
marker is out of range.
y Push [(F-4)HOLD] to freeze the current spectrum
waveform.
• “HOLD” appears while the function is in use.
u Push [EXIT/SET] to exit the scope screen.
55
• Spectrum scope during transmitting
If a strong signal is received, a ghost waveform
may appear. Push [(F-2)ATT] several times to activate the spectrum scope attenuator in this case.
FUNCTION FOR RECEIVE
D Mini scope screen
This mini scope screen can be displayed with another
screen indication, such as set mmode menu, decoder
screen, memory list screen, etc. simultaneously.
[M.SCOPE]
q Push [MAIN/SUB M.SCOPE] for 1 sec. to toggle
the mini scope indication ON and OFF.
ANT
BW 350
TX
METER
Po
P.AMP
SFT
qw:pp
V F O wq≥qpp≥pp
VFO
- 12.5k
R T T Y FIL2
14.100.00
SPECTRUM
SSB
SCOPE
12:00
FIL2
+ 12.5k
Grid
2.5k
10dB
ATT
OFF
AGC
MID
RTTY
FIL
ON
RTTY DECODE
****
* * * * RTTY
R T T Y Encode/Decode
E n c o d e / D e c o d e Monitor
M o n i t o r ****
****
45bps
4 5 b p s BAUDOT
BAUDOT
Mark=2125Hz,
M a r k = 2 1 2 5 H z , Shift=170Hz
Shift=170Hz
Max.62
M a x . 6 2 Charascters
C h a r a s c t e r s x 8ch
8 c h TX
T X Memory
Memory
If
I f RTTY-FIL
R T T Y - F I L is
i s OFF,
O F F , Please
P l e a s e turn
t u r n ON.
ON.
1/4
OFF

HLD/CLR
THRESHOLD
ADJ
WIDE
TX MEM
56
5
FUNCTION FOR RECEIVE
■ Preamp
The preamp amplifies received signals in the front
end circuit to improve the S/N ratio and sensitivity. Set
this to preamp 1 or preamp 2 when receiving weak
signals.
[P.AMP]
➥ Push [P.AMP] several times to set the preamp OFF,
preamp 1 ON or preamp2 ON.
• “P. AMP1” activates 10 dB preamp for HF all bands.
• “P. AMP2” activates 16 dB high-gain preamp for
24 MHz band and above.
Regarding the use of the “P.AMP 2”
(Pre-amplifier 2)
The “P.AMP 2” is a high gain receive amplifier. When
the “P.AMP 2” is used during times of strong electric
fields, distortion sometimes results. In such cases,
use the transceiver with the “P.AMP 1” or “P.AMP
OFF” setting.
The “P.AMP 2” is most effective when:
• Used on bands above 24 MHz and when electric
fields are weak.
• Receive sensitivity is insufficient during low gain, or
while using a narrow band antenna (such as small
loop, a Beverage antenna or a short Yagi antenna,
etc.) is used.
■ Attenuator
The attenuator prevents a desired signal from distortion when very strong signals are near the desired frequency or when very strong electric fields, such as
from broardcasting stations, are near your location.
[ATT]
57
➥ Push [ATT] several times to set the attenuator 6
dB, 12 dB, 18 dB or OFF.
• “ATT 6dB,” “ATT 12dB,” “ATT 18dB” and “ATT OFF”
appears respectively.
FUNCTION FOR RECEIVE
■ RIT function
The RIT (Receive Increment Tuning) function compensates for off-frequencies of the communicating
station.
The function shifts the receive frequency up to ±9.999
kHz in 1 Hz steps (10 Hz steps when cancelling the 1
Hz step readout) without moving the transmit frequency.
• See @9 on p. 5 for function description.
[CLEAR]
q Push [RIT] to turn the RIT function ON and OFF.
• “ RIT ” and the shifting frequency appear when the
function is ON.
ANT
BW 2.4k SFT
T X VFO
TX
qw:pp
USB
FIL2
qr.qot.pp
METER
Po
14.100.00
USB
RIT
P.AMP
q.wt
Appear
w Rotate the [RIT/∂TX] control.
RIT/∂TX
Low shift
High shift
e To reset the RIT frequency, push [CLEAR] for
1 sec.
[RIT]
[RIT/∂TX]
• Push [CLEAR] momentarily to reset the RIT frequency
when the quick RIT/∂TX clear function is ON. (p. 102
ANT
BW 2.4k SFT
T X VFO
TX
qw:pp
USB
qr.qot.pp
METER
Po
14.100.00
USB
RIT
P.AMP
When RIT and ∂TX are ON at the same time, the
[RIT/∂TX] control shifts both the transmit and receive frequencies from the displayed frequency at
the same time.
FIL2
p.pp
Reset to
“0.00”
r To cancel the RIT function, push [RIT] again.
•“
RIT
” disappears.
• Calculate function
• Practical example
The shift frequency of the RIT or ∂TX function can
be added/subtracted to the displayed frequency.
When you find a DX station on 21.025 MHz/CW and
the station is picking up stations transmitting slightly
up from 21.025 MHz.
While displaying the RIT and/or ∂TX shift frequency,
push [RIT] or [∂TX] for 1 sec.
ANT
BW 2.4k SFT
T X VFO
TX
METER
Po
qw:pp
USB
FIL2
qr.qot.pp
14.100.00
USB
RIT
P.AMP
p.wt
• Now you can transmit the DX station’s receive frequency and receive the DX station’s transmit frequency (21.025 MHz).
RIT
Push and hold
ANT
BW 2.4k SFT
T X VFO
TX
METER
Po
r Start transmitting while the station is standing by.
FIL2
qr.qot.wt
P.AMP
qw:pp
USB
q Push [RIT] and [∂TX] to turn both the RIT and
∂TX functions ON.
w Rotate [RIT/∂TX] to find the DX station’s receive
frequency.
e When you find the DX station’s receive frequency,
push [RIT] to turn the RIT function OFF.
14.100.00
USB
RIT
p.pp
58
5
FUNCTION FOR RECEIVE
■ AGC function
The AGC (auto gain control) controls receiver gain to
produce a constant audio output level even when the
received signal strength is varied by fading, etc.
The transceiver has 3 AGC characteristics (time constant; fast, mid, slow) for non-FM mode.
The FM mode AGC time constant is fixed as
‘FAST’ (0.1 sec.) and AGC time constant cannot be
selected.
• Setting the AGC time constant
q Select the desired mode except FM mode.
w Push [AGC] for 1 sec. to enter AGC set mode.
ANT
BW 2.4k SFT
TX
TX
METER
Po
VFO
ATT
OFF
FIL2
qr.qot.pp
VFO
USB
FIL2
qr.wpt.pp
AGC
SSB
q Select non-FM mode.
w Push [AGC] several times to select AGC fast, AGC
medium (MID) or AGC slow.
AGC
MID
Medium AGC time constant
AGC
SLOW
Slow AGC time constant
AGC
FAST
Fast AGC time constant
Default
Selectable AGC time constant
SSB
0.3 (FAST)
OFF, 0.1, 0.2, 0.3, 0.5, 0.8, 1.2,
2.0 (MID)
1.6, 2.0, 2.5, 3.0, 4.0, 5.0, 6.0
6.0 (SLOW)
CW
0.1 (FAST)
OFF, 0.1, 0.2, 0.3, 0.5, 0.8, 1.2,
0.5 (MID)
1.6, 2.0, 2.5, 3.0, 4.0, 5.0, 6.0
1.2 (SLOW)
0.1 (FAST)
OFF, 0.1, 0.2, 0.3, 0.5, 0.8, 1.2,
RTTY 0.5 (MID)
1.6, 2.0, 2.5, 3.0, 4.0, 5.0, 6.0
1.2 (SLOW)
59
FM
CW
RTTY
AM
VOX
OFF
FAST
0.3
0.1
0.1
3.0
0.1
MID
2.0
0.5
0.5
5.0
---
COMP
OFF
WIDE
SLOW
6.0
1.2
1.2
7.0
--(sec)
DEF
e Push [AGC] several times to select FAST time
constant.
r Rotate the tuning dial to set the desired time constant for ‘AGC FAST.’
• AGC time constant can be set between 0.1 to 8.0 sec.
(depends on mode) or turned OFF.
• Push [(F-3)DEF] to select a default value.
t Push [AGC] to select medium time constant.
y Rotate the tuning dial to set the desired time constant for ‘AGC MID.’
• Selectable AGC time constant (unit: sec.)
Mode
USB
14.100.00
AGC
MID
• AGC time constant selection
USB
14.100.00
P.AMP
qw:pp
USB
AM
3.0 (FAST)
OFF, 0.3, 0.5, 0.8, 1.2, 1.6, 2.0,
5.0 (MID)
2.5, 3.0, 4.0, 5.0, 6.0, 7.0, 8.0
7.0 (SLOW)
FM
0.1 (FAST)
Fixed
• AGC time constant can be set between 0.1 to 8.0 sec.
(depends on mode) or turned OFF.
• Push [(F-3)DEF] to select a default value.
u Push [AGC] to select slow time constant.
i Rotate the tuning dial to set the desired time constant for ‘AGC SLOW.’
• AGC time constant can be set between 0.1 to 8.0 sec.
(depends on mode) or turned OFF.
• Push [(F-3)DEF] to select a default value.
o Select another mode except FM. Repeat steps e
to i if desired.
!0 Push [EXIT/SET] to exit the AGC set mode screen.
FUNCTION FOR RECEIVE
■ Twin PBT operation
General PBT (Passband Tuning) function electronically
narrows the IF passband width by shifting the IF frequency to slightly outside of the IF filter passband to
reject interference. This transceiver uses the DSP circuit for the PBT function. Moving both [TWIN PBT]
controls to the same position shifts the IF.
➥ The LCD shows the passband width and shift frequency graphically.
➥ Push [FILTER] for 1 sec. to enter the filter set mode.
Current passband width and shift frequency is displayed in the filter set mode screen.
➥ To set the [TWIN PBT] controls to the center positions, push [PBT CLR] for 1 sec.
The variable range depends on the passband width
and mode. The edge of the variable range is half of the
passband width, and PBT is adjustable in 25 or 50 Hz
steps. These controls function as an IF shift control
while in AM mode and when the RTTY filter is turned
ON. Only the inner control may function in this case.
IF shift is adjustable in 20/40 Hz steps in RTTY (RTTY
filter is turned ON) or 150/300/500 Hz steps in AM.
• [TWIN PBT] should normally be set to the center positions (PBT setting is cleared) when there is no interference.
• When PBT is used, the audio tone may be changed.
• Not available for FM mode.
• While rotating [TWIN PBT], noise may occur. This comes
from the DSP unit and does not indicate an equipment
malfunction.
PBT OPERATION EXAMPLE
Both controls at
center position
Cutting a lower
passband
TWIN PBT
TWIN PBT
Cutting both higher and
lower passbands
TWIN PBT
Passband
IF center frequency
Interference
Desired signal
Passband
Interference
Interference
Desired signal
60
5
FUNCTION FOR RECEIVE
■ IF filter selection
The transceiver has 3 passband width IF filters for
each mode.
For SSB and CW modes, the passband width can be
set within 50 to 3600 Hz in 50 or 100 Hz steps. A total
of 41 passband widths are available.
For RTTY mode, the passband width can be set
within 50 to 2700 Hz in 50 or 100 Hz steps. A total of
32 passband widths are available.
For AM and FM modes, the passband width is fixed
and 3 passband widths are available.
The filter selection is automatically memorized in
each mode.
• Filter passband width setting
(SSB, CW and RTTY mode only)
q Select SSB, CW or RTTY mode.
• Passband widths for AM and FM modes are fixed and
cannot be set.
w For RTTY mode, turn OFF the RTTY filter by pushing [RTTY FIL].
e Push [FILTER] for 1 sec. to enter filter set mode.
Passband
width
ANT
VFO
qw:pp
USB
FIL2
qr.qot.pp
14.100.00
P.AMP
The PBT shift frequencies are automatically memorized in each filter.
BW 2.4k SFT
TX
TX
METER
Po
Selected
IF filter
VFO
USB
USB
FIL2
qr.wpt.pp
ATT
OFF
14.100.00
USB
FILTER
AGC
MID
SSB
• IF filter selection
VOX
OFF
q Select the desired mode.
w For RTTY mode, turn OFF the RTTY filter by pushing [RTTY FIL].
e Push [FILTER] several times to select the IF filter
1, 2 or 3.
• The selected passband width and filter number is displayed in the LCD.
Passband
width
ANT
BW 2.4k SFT
TX
TX
METER
Po
VFO
ATT
OFF
qw:pp
USB
FIL2
qr.qot.pp
14.100.00
P.AMP
Selected
IF filter
VFO
USB
USB
FIL2
qr.wpt.pp
14.100.00
USB
300
1500
2700
PBT1
COMP
OFF
WIDE
BW
PBT2
FIL 1
FI
3.0k
FIL 2
FI
2.4K
FI
FIL 3
1.8K
DEF
r Push [FILTER] several times to select the desired
IF filter.
t While pushing [(F-1)BW], rotate the tuning dial to
set the desired passband width.
• In SSB and CW modes, the passband width can be set
within the following range.
50 to 500 Hz
50 Hz steps
600 to 3600 Hz
100 Hz steps
• In RTTY mode, the passband width can be set within
the following range.
50 to 500 Hz
50 Hz steps
600 to 2700 Hz
100 Hz steps
• Push [(F-3)DEF] to select the default value.
y Repeat steps r to t if desired.
u Push [EXIT/SET] to exit the filter set mode screen.
The PBT shift frequencies are cleared when the
passband width is changed.
This filter set mode screen graphically displays the
PBT shift frequencies and CW pitch operations.
61
FUNCTION FOR RECEIVE
■ DSP filter shape
The type of DSP filter shape for each SSB and CW
can be selected independently from soft and sharp.
q Push the [EXIT/SET] several times to close a
multi-function screen, if necessary.
w Push the [EXIT/SET] switch for 1 sec. to enter set
mode.
e Push the [(F-3)DSP] switch to enter the DSP filter
set mode.
r Push one of [(F2)SSB-FIL] or [(F4)CW-FIL] to select the desired DSP filter shape from sharp and
soft for each SSB or CW mode, respectively.
t Push the [ENTER/SET] twice to exit the set mode.
[EXIT/SET] switch
[(F-3)DSP] switch
DSP FILTER SET
AGC
MID
SSB
SHARP
CW
SHARP
BK-IN
OFF
1/4
OFF
SSB-FIL
Push
SSB
F-2
CW-FIL
Push
SOFT
CW
F-4
SOFT
■ Noise blanker
The noise blanker eliminates pulse-type noise such
as from car ignitions. The noise blanker is not available for FM mode.
[NB] switch
Tuning dial
q Push the [NB] switch to turn the noise blanker ON.
• [NB] indicator lights.
w Push the [NB] switch for 1 sec. to enter the noise
blanker level set mode.
e Rotate the tuning dial to adjust the noise blanker
level.
• Push [(F-3)DEF] for 1 sec. to return to default value.
r Push the [NB] switch to turn the noise blanker
OFF.
• [NB] indicator goes off.
AGC
MID
NB
N B Level
NB
Level
50%
50%
VOX
ON
COMP
OFF
WIDE
DEF
When using the noise blanker, received signals
may be distorted if they are excessively strong.
62
5
FUNCTION FOR RECEIVE
■ Dualwatch operation
Dualwatch monitors 2 frequencies with the same
mode simultaneously.
During dualwatch, both frequencies should be on the
same band, because the bandpass filter in the RF circuit is selected for the main readout frequency.
• Equalized receive frequency and “ DUAL-W ” appear in
the LCD. This quick dualwatch function can be turned
OFF in set mode. (p. 98)
• Pushing [DUALWATCH] momentarily activates the dualwatch with the previously operated frequency.
BW 2.4k SFT
VFO
TX
TX
METER
Po
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ATT
OFF
56
USB
USB
DUAL-W
UAL-W
FIL2
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t Push [DUALWATCH] for 1 sec.
• Scanning during dualwatch
Scanning operates only for the main readout. To operate the scan during dualwatch, scan on the main
readout and use the sub readout for your QSO using
both dualwatch and split frequency operation.
q Program the desired programmed scan edges in
the same amateur band. See p. 78 for programming.
• If you plan to operate a ∂F scan, programming the
scan edges may not be necessary.
w Push [SPLIT] to turn the split frequency function
ON.
•“
SPLIT
ANT
” appears.
BW 2.4k SFT
VFO
FIL2
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OFF
qw:pp
USB
wq.wop.pp
METER
Po
P.AMP
RIT function can be used for the main readout only.
∂TX function can be used for the transmit readout
(main readout when the split function is OFF; sub
readout when the split function is ON).
qw:pp
USB
• S-meter shows the combined signal strength.
t To transmit on the sub readout frequency, push
[CHANGE] or [SPLIT].
q Set a desired frequency.
w Push [DUALWATCH] for 1 sec.
ANT
e Set another desired frequency using the tuning
dial.
r Adjust [BAL] to set a suitable signal strength balance between the main and sub readout frequencies.
USB
SPLIT
SPLIT
TX
TX
VFO
USB
FIL2
• The main and sub readout frequencies are equalized
and the dualwatch function is turned ON.
ANT
BW 2.4k SFT
VFO
FIL2
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METER
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USB
SPLIT
SPLIT
TX
TX
VFO
USB
USB
DUAL-W
UAL-W
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y Push [(F-4)SCAN] to select the scan screen.
• Push [EXIT/SET] several times to close a multi-function screen, if necessary.
u Push [(F-1)PROG] or [(F-2)∂F] to start the programmed scan or ∂F scan, respectively.
• Scan activates on the main readout between the programmed scan edges or within the ∂F span.
• Transmitting on the sub readout stops the scan.
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ANT
BW 2.4k SFT
VFO
e Select VFO mode for the main readout.
r Set the desired operating frequency for the main
readout.
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OFF
FIL2
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METER
Po
P.AMP
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USB
SPLIT
SPLIT
TX
TX
VFO
USB
USB
DUAL-W
UAL-W
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SCAN
AGC
MID
PROGRAM SCAN
VOX
OFF
COMP
OFF
WIDE
PROG
∂F
Span
Programmed
scan edges
∂F
P1:
P2:
±
10kHz
21.000.00MHz
21.450.00MHz
FINE
∂ F SPAN
i To cancel the scan, push [EXIT/SET].
63
SET
FUNCTION FOR RECEIVE
■ Notch function
This transceiver has auto and manual notch functions. The auto notch function automatically attenuates more than 3 beat tones, tuning signals, etc.,
even if they are moving. The manual notch can be set
to attenuate a frequency via the [NOTCH] control.
While operating the manual notch, noise may be
heard. This comes from the DSP unit and does not
indicate an equipment malfunction.
➥ Push [NOTCH] to toggle the notch function between auto, manual and OFF in SSB and AM
modes.
➥ Push [NOTCH] to turn the manual notch function
ON and OFF in CW mode.
➥ Push [NOTCH] to turn the auto notch function ON
and OFF in FM mode.
Auto notch OFF
• Set to attenuate a frequency for manual notch via the
[NOTCH] control.
• “AN” appears when auto notch is in use.
• “MN” appears when manual notch is in use.
Auto notch ON
Desired
signal (AF)
Unwanted tone
frequency
Desired
signal (AF)
Particular frequency
is attenuated
■ Noise reduction
The noise reduction function reduces noise components and picks out desired signals which are buried
in noise. The received signals are converted to digital
signals and then the desired signals are separated
from the noise.
Noise reduction OFF
BAL
NR
Noise reduction activated
BAL
NR
q Push the [NR] switch to turn the noise reduction
ON.
• [NR] indicator lights.
w Rotate the [NR] control to adjust the noise reduction level.
e Push the [NR] switch to turn the noise reduction
OFF.
Noise components
Desired
signal (CW)
• [NR] indicator lights off.
Deep rotation of the [NR] control results in audio
signal masking or distortion. Set the [NR] control
for maximum readability.
■ Dial lock function
The dial lock function prevents changes by accidental
movement of the tuning dial. The lock function electronically locks the dial.
[LOCK] indicator
➥ Push [LOCK/SPEECH] to toggle the dial lock function ON and OFF.
• The [LOCK] indicator lights when the dial lock function
is in use.
[LOCK/SPEECH] switch
64
6
FUNCTION FOR TRANSMIT
■ VOX function
The VOX (Voice-Operated Transmission) function
switches between transmit and receive with your voice.
This function provides an opportunity to input log entries into your computer, etc., while operating.
D Using the VOX function
q Select a phone mode (SSB, AM, FM).
w Push [VOX] to turn the VOX function ON or OFF.
[VOX]
• “VOX ON” appears while the VOX is in use.
D Adjusting the VOX function
q Select a phone mode (SSB, AM, FM).
w Push [VOX] to turn VOX function ON.
e Push [VOX] for 1 sec. to enter VOX set mode.
r Select the VOX gain item using [(F-1)Y] or [(F2)Z].
t While speaking into the microphone, rotate the
tuning dial to the point where the transceiver is
continuously transmitting.
y Adjust the VOX delay for a convenient interval before returning to receive.
[VOX]
ANT
BW 2.4k SFT
TX
TX
METER
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VOX
AGC
MID
VOX Gai n
Anti-VOX
VOX Del a y
VOX
OFF
50%
50%
0.2s
COMP
OFF
WIDE
é
65
USB
FIL2
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ATT
OFF
è
DEF
- Select the VOX delay item using [(F-1)Y] or [(F-2)Z].
- Rotate the tuning dial.
u If the receive audio from the speaker switches to
transmit, adjust the anti VOX to the point where it
has no effect.
FIL2
qr.qot.pp
P.AMP
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FUNCTION FOR TRANSMIT
■ Break-in function
The break-in function is used in CW mode to automatically toggle the transceiver between transmit and receive when keying. The IC-756PROIII is capable for
full break-in or semi break-in.
D Semi break-in operation
During semi break-in operation, the transceiver selects transmit when keying, then automatically returns
to receive after a pre-set time from when you stop
keying.
[BK-IN]
q Push [CW] to select CW or CW-R mode.
w Push [BK-IN] several times to turn the semi breakin function ON.
• “BK-IN SEMI” appears.
e Rotate [BK-IN DELAY] to set the break-in delay
time (the delay from transmit to receive).
When using a paddle, rotate [KEY SPEED] to adjust the keying speed.
[BK-IN DELAY] [KEY SPEED]
D Full break-in operation
During full break-in operation, the transceiver automatically selects transmit while keying and returns to
receive immediately after keying is finished.
q Push [CW] to select CW or CW-R mode.
w Push [BK-IN] several times to turn the full break-in
function ON.
• “BK-IN FULL” appears.
[BK-IN]
When using a paddle, rotate [KEY SPEED] to adjust the keying speed.
[BK-IN DELAY] [KEY SPEED]
66
6
FUNCTION FOR TRANSMIT
■ Transmit filter width setting (SSB only)
The transmit filter width for SSB mode can be selected from wide, middle and narrow.
➥ During USB or LSB mode selection, push [COMP]
for 1 sec. several times to select the desired transmit filter width from wide, middle and narrow.
• The filter functions regardless of the speech compressor use.
• The following filters are specified as the default. Each
of the filter width can be re-set in level set mode.
(pgs. 93, 94)
WIDE : 100 Hz to 2.9 kHz
MID : 300 Hz to 2.7 kHz
NAR : 500 Hz to 2.5 kHz
[COMP]
■ Speech compressor
The RF speech compressor increases average RF
output power, improving signal strength and readability in SSB.
y Push [METER] once to select the COMP meter.
u Adjust the [COMP] control so that the COMP
meter reads within 10 dB and 20 dB.
COMP meter
• Speech compressor
q Select USB or LSB mode.
w Push [COMP] momentarily to turn the speech
compressor ON and OFF.
e Push [COMP] for 1 sec. to toggle between narrow,
middle or wide transmit filter.
• Transmit filter width:
NAR
2.0 kHz
MID
2.6 kHz
WIDE 2.9 kHz
Po
10
25 50
1 1.5
SWR
COMP
ALC
+ 20
+ 40
+ 60dB
100
2 3
20
10
dB
When the ALC meter peaks above the ALC zone,
your transmitted voice may be distorted.
• Compression level setting
q Select USB or LSB mode.
w Preset the transceiver as follows:
[COMP] function
: OFF
[METER] function
: ALC
[MIC GAIN] control
: Center position
[COMP] control
: Center position
[RF POWER] control : Max. counterclockwise
e Transmit at your normal voice level.
r Adjust the [MIC GAIN] control so that the ALC
meter reads within the ALC zone, whether or not
you speak softly or loudly.
t Push [COMP] momentarily to turn the speech
compressor ON.
67
[METER] switch
[MIC GAIN] control
[RF POWER] control
[COMP] switch
[COMP] control
FUNCTION FOR TRANSMIT
■ ∂TX function
The ∂TX function shifts the transmit frequency up to
±9.999 kHz in 1 Hz steps (10 Hz steps when cancelling the 1 Hz step readout) without moving the receive frequency.
• See #0 on p. 5 for function description.
q Push [∂TX] switch.
• “ ∂TX
TX ” and the shifting frequency appear when the
function is ON.
ANT
BW 2.4k SFT
T X VFO
TX
FIL2
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METER
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[CLEAR]
qw:pp
USB
P.AMP
USB
: TX
q.wt
Appear
w Rotate the [RIT/∂TX] control.
RIT/∂TX
Low shift
[∂TX]
[RIT/∂TX]
High shift
e To reset the ∂TX frequency, push [CLEAR] for
1 sec.
• Push [CLEAR] momentarily to reset the RIT frequency
when the quick RIT/∂TX clear function is ON. (p. 102)
ANT
BW 2.4k SFT
T X VFO
TX
qw:pp
USB
FIL2
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METER
Po
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When RIT and ∂TX are ON at the same time, the
[RIT/∂TX] control shifts both the transmit and receive frequencies from the displayed frequency at
the same time.
USB
: TX
p.pp
Reset to
“0.00”
r To cancel the ∂TX function, push [∂TX] again.
•“
∂TX
TX
” and the shifting frequency disappears.
• Calculate function
• Practical example
The shift frequency of the RIT or ∂TX function can
be added/subtracted to the displayed frequency.
When you find a DX station on 21.025 MHz/CW and
the station is picking up stations transmitting slightly
up from 21.025 MHz.
While displaying the RIT and/or ∂TX shift frequency,
push [RIT] or [∂TX] for 1 sec.
ANT
BW 2.4k SFT
T X VFO
TX
METER
Po
qw:pp
USB
FIL2
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USB
: TX
p.wt
BW 2.4k SFT
T X VFO
TX
METER
Po
FIL2
r Start transmitting while the station is standing by.
qr.qot.wt
P.AMP
qw:pp
USB
q Push [RIT] and [∂TX] to turn both the RIT and
∂TX functions ON.
w Rotate [RIT/∂TX] to find the DX station’s receive
frequency.
e When you find the DX station’s receive frequency,
push [RIT] to turn the RIT function OFF.
• Now you can transmit the DX station’s receive frequency and receive the DX station’s transmit frequency (21.025 MHz).
∂TX
Push and hold
ANT
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68
6
FUNCTION FOR TRANSMIT
■ Monitor function
The monitor function allows you to monitor your transmit IF signals in any mode through the speaker. Use
this to check voice characteristics while adjusting
SSB transmit tones. (p. 93) The CW sidetone functions regardless of the [MONITOR] switch setting.
[MONITOR] switch
[PHONES]
jack
q Push [MONITOR].
• The indicator lights when the monitor function is ON.
w Push [EXIT/SET] several times to close a multifunction screen, if necessary.
e Push [EXIT/SET] for 1 sec. then [(F-1)LEVEL] to
enter level set mode.
r Push [(F-1)Y] or [(F-2)Z] to select the monitor
level item.
t Adjust monitor gain using the tuning dial.
• Pushing [(F-3)DEF] sets the selected item to the default
value of the item.
y Push [EXIT/SET] twice to exit level set mode.
• Use headphones to prevent feedback.
• Set the transmit tone settings to the 0 dB positions
to check the unaltered characteristics of transmitter or microphone.
69
ANT
BW 2.4k SFT
TX
TX
METER
Po
VFO
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VFO
USB
USB
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LEVEL SET
AGC
MID
VOX
OFF
COMP
OFF
WIDE
é
SSB TBW (NAR)
SSB TBW (NAR)
Monitor Level
Side Tone Level
Side Tone Level Limit
Beep Level
Beep Level Limit
è
DEF
500
2500
50%
50%
ON
50%
ON
FUNCTION FOR TRANSMIT
■ Split frequency operation
Split frequency operation allows you to transmit and
receive in the same mode on two different frequencies. The split frequency operation is basically performed using 2 frequencies on the main and sub
readouts.
The following is an example of setting 21.290 MHz for
receiving and 21.310 MHz for transmitting.
q Set 21.290 MHz (USB) in VFO mode.
ANT
BW 2.4k SFT
TX
TX
VFO
qw:pp
USB
FIL2
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METER
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VFO
USB
USB
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w Push [SPLIT] momentarily, then push [CHANGE]
for 1 sec.
• The quick split function is much more convenient for
selecting the transmit frequency. See the next section
for details.
• The equalized transmit frequency and “ SPLIT ” appear
on the LCD.
• “TX” appears to show the transmit frequency’s readout.
ANT
BW 2.4k SFT
VFO
FIL2
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METER
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USB
USB
VFO
USB
FIL2
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e Rotate the tuning dial while pushing [XFC] to set
the transmit frequency to 21.310 MHz.
• The transmit frequency can be monitored while pushing
[XFC] or using dualwatch.
ANT
BW 2.4k SFT
VFO
FIL2
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METER
Po
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qw:pp
USB
USB
SPLIT
SPLIT
TX
TX
ATT
OFF
VFO
USB
q Push [F-INP].
w Enter the desired shift frequency with the digit
keys.
• 1 kHz to 1 MHz can be set.
• When you require a minus shift direction, push [ • ] in
advance.
e Push [SPLIT].
• The shift frequency is input in the sub readout and the
split function is turned ON.
To operate on 1 kHz
higher frequency:
F-INP
SPLIT
To operate on 3 kHz
lower frequency:
F-INP
•
SPLIT
CONVENIENT
DUALWATCH FUNCTION
The dualwatch function is convenient for tuning the
transmit frequency while monitoring both frequencies
used for transmitting and receiving.
CONVENIENT
SPLIT
SPLIT
TX
TX
DIRECT SHIFT FREQUENCY INPUT
The shift frequency can be entered directly.
[EXAMPLE]
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FIL2
SPLIT LOCK FUNCTION
Accidentally releasing the [XFC] switch while rotating
the tuning dial changes the receive frequency. To prevent this, use both the split lock and dial lock functions to change the transmit frequency only. The split
lock function cancels the dial lock function while pushing [XFC] during split frequency operation.
The dial lock’s effectiveness during split frequency operation can be selected in the set mode for both receive and transmit frequencies; or only the receive
frequency. (p. 99)
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r Now you can receive on 21.290 MHz and transmit on
21.310 MHz.
To change the transmit and receive frequencies, push
[CHANGE] to exchange the main and sub readouts.
70
6
FUNCTION FOR TRANSMIT
■ Quick split function
When you find a DX station, an important consideration is how to set the split frequency.
When you push the [SPLIT] switch for 1 sec., split frequency operation is turned ON, the sub readout is
equalized to the main readout frequency and enters
standby for transmit frequency input.
This shortens the time needed to start split frequency
operation.
w Push [SPLIT] for 1 sec.
• Split frequency operation is turned ON.
• The sub readout is equalized to the main readout frequency.
• The sub readout enters standby for transmit frequency
input.
ANT
VFO
q Suppose you are operating at 21.290 MHz (USB)
in VFO mode.
ANT
BW 2.4k SFT
TX
TX
METER
Po
VFO
ATT
OFF
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USB
USB
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TX
TX
VFO
USB
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e Rotate the tuning dial to set the transmit frequency; or, input the transmit frequency using the
keypad and [ENT]; or, input a shift frequency using
the keypad and [SPLIT].
• The transmit frequency can be monitored while pushing
[XFC] or using dualwatch.
ANT
BW 2.4k SFT
FIL2
wq.wop.pp
METER
Po
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USB
USB
SPLIT
SPLIT
TX
TX
VFO
USB
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PRACTICAL EXAMPLE
When you are searching for DX stations and you
suspect that a DX station may say “up ‘X’ kHz” for
their receive frequency:
When you receive a pile-up and you want to start
split frequency operation to simplify picking out stations:
OPERATION 1
q Push [SPLIT] for 1 sec. to standby for split operation.
w If the DX station’s operator says “up 10 kHz”:
q Push [SPLIT] momentarily and push [CHANGE]
for 1 sec.
• Push [1], [0] then [SPLIT].
• Or, rotate the tuning dial.
OPERATION 2
If the DX station’s operator says “down 5 kHz” before you enter standby for split operation:
➥ Push [F-INP], [ • ], [5] then [SPLIT].
• The split function is turned ON and “5 kHz down” frequency is entered in the sub readout.
71
USB
SPLIT
SPLIT
ATT
OFF
ATT
OFF
PRACTICAL EXAMPLE
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VFO
USB
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METER
Po
P.AMP
The quick split function is ON by default. For your
convenience, it can be turned OFF in set mode.
(p. 98) In this case, the [SPLIT] switch does not
equalize the main and sub readout frequencies.
BW 2.4k SFT
• The sub readout frequency is equalized to the main
readout frequency and “ SPLIT ” appears.
w Rotate the tuning dial to set your receive frequency in the main readout.
e Announce your receive frequency.
r After you catch one of the calling stations’ call
signs, push and hold the PTT switch to respond.
• While pushing [XFC], you can monitor your transmit
frequency.
7
VOICE RECORDER FUNCTIONS
■ Digital voice recorder
The transceiver has a total of 8 memory channels, 4
each for transmit and receive, of digital voice memories. A maximum message length of 15 sec. can be
recorded in each receive channel, and a total message
length of 90 sec. can be recorded in transmit channels.
Providing a transmission memory is very convenient
for repeated CQ and number transmissions at contest
times, as well as when making consecutive calls in
DX’pedition.
• Recording a received audio
• Playing the recorded audio
q Push [EXIT/SET] several times to close a multifunction screen, if necessary.
w Select the desired mode by pushing [SSB],
[CW/RTTY] or [AM/FM].
e Push [(F-2)VOICE] to call up the voice recorder
screen.
q Push [EXIT/SET] several times to close a multifunction screen, if necessary.
w Push [(F-2)VOICE] to call up the voice recorder
screen.
• If the transmit voice memory channel (T1–T4) appears,
push [(F-5)T/R] to select receive voice memory channel.
R1
R1
VOX
OFF
COMP
OFF
WIDE
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USB
15:30
15:30
8s
R2
R2
-----
R3
R3
-----
R4
R4
-----
R2
R3
R4
T/R
r Push the desired memory channel switch,
[(F-1)R1] – [(F-4)R4], for 1 sec. to start recording.
• “REC” flashes and the recording timer counts up.
• The operating frequency, mode and current time are
programmed as the memory names automatically.
• Previously recorded contents are cleared.
COMP
OFF
WIDE
COMP
OFF
WIDE
R1
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USB
15:30
15:30
8s
8s
R2
R2
-----
R3
R3
-----
R4
R4
-----
RX M E M O R Y
R1
R2
R3
R4
T/R
e Push the desired memory channel switch,
[(F-1)R1] – [(F-4)R4], momentarily to playback.
• “PLAY” appears.
AGC
MID
VOX
OFF
COMP
OFF
WIDE
R1
VOX
OFF
R1
R1
RX M E M O R Y
RX
R1
AGC
MID
VOICE RECORDER
AGC
MID
VOX
OFF
VOICE RECORDER
AGC
MID
• If the transmit voice memory channel (T1–T4) appears,
push [(F-5)T/R] to select receive voice memory channel.
VOICE RECORDER
PLAY
R1
R1
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USB
10:10
10:10
5s
5s
R2
R2
-----
R3
R3
-----
R4
R4
-----
RX M E M O R Y
R2
R3
R4
T/R
VOICE RECORDER
REC
R1
R1
14.195.00
14.195.00
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USB
10:10
10:10
10s
10s
R2
R2
-----
R3
R3
-----
R4
R4
-----
RX M E M O R Y
RX
R2
R3
R4
T/R
t Push the selected memory channel switch,
[(F-1)R1] – [(F-4)R4], again to stop recording.
• Recording is automatically terminated after 30 min.
r Push the selected memory channel switch,
[(F-1)R1] – [(F-4)R4], again to stop playback if desired.
• Playback is terminated automatically when all of the
recorded contents in the channel are played, or after
15 sec.
t Push [EXIT/SET] twice to exit the voice memory
screen.
IMPORTANT!
Push one of [(F-1)R1]–[(F-4)R4] to stop recording before, or when 15 sec. has passed from the
start of recording.
The voice recorder memory records the 15 sec.
(max.) of audio before one of [(F-1)R1]–[(F4)R4] is pushed.
For example, when recording 20 sec. of audio,
the first 5 sec. audio will be over-recorded with
the last 5 sec., so that the total of audio
recorded is 15 sec. only.
y Push [EXIT/SET] twice to exit the voice memory
screen.
72
7
VOICE RECORDER FUNCTIONS
■ Digital voice recorder (continued)
• One-touch voice recording
[REC/PLAY] switch
To record the receiving signal contents immediately,
one-touch voice recording is available.
q Push [REC/PLAY] for 1 sec. while receiving a signal to start recording.
• “REC” flashes.
• Records audio into the channel R4.
w Push [REC/PLAY] momentarily to stop recording.
• Recording is automatically terminated after 30 min.
IMPORTANT!
Push [REC/PLAY] to stop recording before, or
when 15 sec. has passed from the start of
recording.
ANT
METER
Po
The recorded audio in the channel R4 can be playback without selecting the voice memory screen.
q Push [REC/PLAY] to playback.
• “PLAY” appears.
• Playback the recorded audio in the channel R4.
w Push [REC/PLAY] again to stop playback if desired.
• Playback is terminated automatically when all of the
recorded contents in the channel R4 are played, or
after 15 sec.
73
VFO
qw:pp
USB
FIL2
qr.qot.pp
14.100.00
P.AMP
ATT
OFF
• One-touch playback
BW 2.4k SFT
TX
TX
VFO
USB
USB
FIL2
qr.wpt.pp
14.100.00
USB
REC
AGC
MID
VOX
OFF
COMP
OFF
WIDE
SCOPE
VOICE
MEMORY
SCAN
VOICE RECORDER FUNCTIONS
■ Digital voice recorder (continued)
• Recording a message for transmit
To transmit a message using a voice recorder, record
the desired message in advance as described below.
q Push [EXIT/SET] several times to close a multifunction screen, if necessary.
w Push [(F-2)VOICE] to call up the voice recorder
screen.
r Push the desired memory channel switch,
[(F-1)T1] – [(F-4)T4], momentarily to start playback
and confirmation.
AGC
MID
VOICE MIC-RECORD
PLAY
VOX
OFF
TX Variable ◊ 4ch (Total 90s)
RX 15s Endless ◊ 4ch (TOT 30m)
MIC
M I C REC
Mic Record/Record check
TX
T X LEV.
Recorder Output Adjust
SET
SET
Auto Monitor SET
TX LEV.
MIC REC
SET
e Push [(F-2)MIC REC] to select the voice memory
recording screen.
VOICE MIC-RECORD
AGC
MID
VOX
OFF
COMP
OFF
WIDE
T1
T1
-----
T2
T2
-----
T3
T3
-----
T4
T4
----0
50
100
REC LEVEL
T1
T3
T2
T4
NAME
• Speak into the microphone without pushing the [PTT]
switch.
• Previously recorded contents are cleared.
VOX
OFF
COMP
OFF
WIDE
T1
----0
50
100
REC LEVEL
T3
T2
T4
Remain
80s
NAME
VOICE MIC-RECORD
REC
T1
T1
10s
10s
T2
T2
-----
T3
T3
-----
T4
T4
----0
50
100
REC LEVEL
T2
T3
T4
t Push the selected memory channel switch,
[(F-1)T1] – [(F-4)T4], again to stop playback if desired.
y Push [EXIT/SET] twice to exit the voice memory
screen.
• Programming a memory name for
transmit
Memory channels can be tagged with alphanumeric
names of up to 20 characters each.
Remain
90s
r Push the desired memory channel switch,
[(F-1)T1] – [(F-4)T4], for 1 sec. to start recording.
AGC
MID
-----
T4
T4
COMP
OFF
WIDE
VOICE RECORDER
PLAY
P L AY
PLAY
-----
VOICE
O I C E RECORDER MENU
VOX
OFF
COMP
OFF
WIDE
10s
10s
T2
T2
T3
T3
T1
AGC
MID
T1
T1
Remain
80s
NAME
t Adjust the [MIC GAIN] control so that the [REC
LEVEL] indicator reads within 100%.
y Push the selected memory channel switch,
[(F-1)T1] – [(F-4)T4], again to stop recording.
• Recording is automatically terminated when the total
time of recorded messages, T1–T4, becomes 90 sec.
u Push [EXIT/SET] twice to exit the voice memory
screen.
• Confirming a message for transmit
q Push [EXIT/SET] several times to close a multifunction screen, if necessary.
w Push [(F-2)VOICE] to call up the voice recorder
screen.
e Push [(F-2)MIC REC] to select the voice memory
recording screen.
Capital letters, small letters, numerals, some symbols
(! # $ % & ¥ ? " ' ` ^ + – ✱ / . , : ; = < > ( ) [ ] { } | _ )
and spaces can be used. (See step t below.)
q Record a message as described at left.
w Call up the voice memory recording screen as described in steps q to e at left.
e Push [(F-5)NAME] to enter memory name edit
condition.
• A cursor appears and blinks.
r Push [(F-5)T1..T4] several times to select the desired voice memory.
Selected
character
Character
group
keys
VOICE MIC-RECORD
ABC
ABC
T1
10s
10s
T2
---
T3
---
T4
---
123
ç
å
DEL
SPACE
T1..T4
t Input the desired character by rotating the tuning
dial or by pushing the band key for number input.
• Push [ABC] or [abc] to toggle capital and small letters.
• Push [123] or [etc] to toggle numerals and symbols.
• Push [(F-1)Ω] or [(F-2)≈] for cursor movement.
• Push [(F-3)DEL] to delete the selected character.
• Push [(F-4)SPACE] to input a space.
• Pushing the transceiver’s keypad, [0]–[9], can also
enter numerals.
y Push [EXIT/SET] to input and set the name.
• The cursor disappears.
u Repeat steps r to y to program another voice
memory’s name, if desired.
i Push [EXIT/SET] twice to exit the voice memory
screen.
74
7
VOICE RECORDER FUNCTIONS
■ Digital voice recorder (continued)
• Sending a message for transmit
• Transmit monitor function
q Push [EXIT/SET] several times to close a multifunction screen, if necessary.
w Select a phone mode by pushing [SSB] or
[AM/FM].
e Push [(F-2)VOICE] to call up the voice recorder
screen.
The monitor function can be automatically turned ON
while transmitting a voice memory message.
• If the receive voice memory channel (R1–R4) appears,
push [(F-5)T/R] to select transmit voice memory channel.
VOICE RECORDER
AGC
MID
T1
T1
VOX
OFF
COMP
OFF
WIDE
C Q JA3YUA
CQ
JA3YUA
10s
10s
T2
T2
-----
T3
T3
-----
T4
T4
-----
TX M E M O R Y
TX
T1
T2
VOX
OFF
T3
T4
T/R
COMP
OFF
WIDE
T1
VOICE RECORDER
SEND
T1
T1
C Q JA3YUA
CQ
JA3YUA
AGC
MID
VOICE SET
Auto Monitor
ON
-----
T3
T3
-----
T4
T4
-----
TX M E M O R Y
TX
T3
COMP
OFF
WIDE
DEF
r Push [EXIT/SET] to return to the voice recorder
screen.
10s
10s
T2
T2
T2
• Push [(F-3)DEF] for 1 sec. to select the default condition.
VOX
OFF
r Push the desired memory channel switch,
[(F-1)T1] – [(F-4)T4], momentarily to transmit the
contents.
AGC
MID
q Call up the voice recorder screen as described at
left.
w Push [EXIT/SET] then [(F-5)SET] to select the
voice recorder set screen.
e Rotate the tuning dial to turn the monitor function
ON and OFF.
T4
T/R
t Push the selected memory channel switch,
[(F-1)T1] – [(F-4)T4], again to stop, if desired.
y Push [EXIT/SET] twice to exit the voice memory
screen.
• Transmit level setting
q Call up the voice recorder screen as described at
left.
w Push [(F-3)TX LEV.] to select the voice memory
transmit level set mode screen.
VOICE RECORDER
AGC
MID
T1
T1
VOX
OFF
C Q JA3YUA
CQ
JA3YUA
-----
T3
T3
---------
T4
T4
COMP
OFF
WIDE
For your information
When an external keypad is connected to the pin 3
and pin 7 of the [MIC] connecter, the recorded
message, T1–T4, can be transmitted without opening the voice recorder set screen.
See page 73 for details.
10s
10s
T2
T2
TX LEVEL
T1
T2
T3
T4
50%
DEF
e Push the desired memory channel switch,
[(F-1)T1] – [(F-4)T4], momentarily to transmit the
contents.
r Rotate the tuning dial to adjust the transmit voice
level.
• Push [(F-5)DEF] to select the default condition.
AGC
MID
VOX
OFF
VOICE RECORDER
SEND
T1
T1
C Q JA3YUA
CQ
JA3YUA
10s
10s
T2
T2
-----
T3
T3
---------
T4
T4
COMP
OFF
WIDE
T1
TX_LEVEL
TX
LEVEL
T2
T3
T4
50%
DEF
t Push [EXIT/SET] to return to the voice recorder
screen.
75
8
MEMORY OPERATION
■ Memory channels
The transceiver has 101 memory channels. The memory mode is very useful for quickly changing to oftenused frequencies.
All 101 memory channels are tuneable which means
the programmed frequency can be tuned temporarily
with the tuning dial, etc. in memory mode.
MEMORY
CHANNEL
MEMORY
CHANNEL
NUMBER
CAPABILITY
TRANSFER
TO VFO
OVERWRITING
CLEAR
Regular memory
channels
1–99
One frequency and one mode
in each memory channel.
Yes
Yes
Yes
Scan edge
memory
channels
P1, P2
One frequency and one mode in
each memory channel as scan
edges for programmed scan.
Yes
Yes
No
■ Memory channel selection
Y] or [Z
Z] keys
• Using the [Y
• Using the keypad
q Push [VFO/MEMO] to select memory mode.
w Push [Y]/[Z] several times to select the desired
memory channel.
q Push [VFO/MEMO] to select memory mode.
w Push [F-INP].
e Push the desired memory channel number using
the keypad.
• Push and hold [Y]/[Z] for continuous selection.
• [UP] and [DN] on the microphone can also be used.
e To return to VFO mode, push [VFO/MEMO] again.
• Enter 100 or 101 to select scan edge channel P1 or P2,
respectively.
r Push [Y] or [Z] to select the desired memory
channel.
ANT
BW 500
TX
TX
METER
Po
SFT
VFO
CW
BPF
qw:pp
14.100.00
USB
METER
Po
METER
Po
qw:pp
USB
qr.qpp.pp
14.195.00
VFO
VFO
ANT
CW
ENT
BW 2.4k SFT
TX
TX
METER
Po
12
CW
USB
FIL2
.qpp.qw
METER
Po
14.195.00
VFO
VFO
CW
or
qw:pp
USB
ANT
14.195.00
CW
BW 2.4k SFT
TX
TX
FIL2
wr.oyp.pp
VFO
VFO
then
or
ANT
FIL2
14.195.00
BW 2.4k SFT
TX
TX
FIL2
qr.qpp.pp
F-INP
BW 2.4k SFT
TX
TX
qw:pp
USB
VFO
VFO
VFO/
MEMO
ANT
BW 2.4k SFT
TX
TX
FIL2
qr.qot.pp
ANT
METER
Po
12
qw:pp
USB
FIL2
wr.oyp.pp
VFO
VFO
14.195.00
CW
76
8
MEMORY OPERATION
■ Memory channel screen
The memory channel screen simultaneously shows 7
memory channels and their programmed contents. 13
memory channels can be displayed in the wide memory channel screen.
You can select a desired memory channel from the
memory channel screen.
• Selecting a memory channel using the
memory channel screen
q Push [EXIT/SET] several times to close a multifunction screen, if necessary.
w Push [(F-4)MEMORY] to select the memory channel screen.
• [(F-5)WIDE] switches the standard and wide screens.
ANT
BW 2.4k SFT
TX
TX
METER
Po
VFO
14.100.00
VFO
COMP
OFF
WIDE
USB
14.100.00
P.AMP
USB
--.---.-0.500.00
29.999.99
14.100.00
--.---.---.---.---.---.--
SET
-----LSB
USB
USB
----------------
SELECT
--FL2
FL2
FL2
-------
SCAN EDGE
SCAN EDGE
VOX
OFF
NAME
WIDE
r Push [EXIT/SET] to exit the memory channel
screen.
• Confirming programmed memory
channels
q Select the memory channel screen as described
above.
w Rotate the tuning dial while pushing [(F-1)ROLL]
to scroll the screen.
e Push [(F-2)SET] to select the highlighted memory
channel, if desired.
ROLL
MEMORY
99
P1
P2
1ß
--.---.-0.500.00
29.999.99
14.100.00
--.---.---.---.---.---.--
SET
-----LSB
USB
USB
----------------
SELECT
--FL2
FL2
FL2
-------
SCAN EDGE
SCAN EDGE
NAME
WIDE
“ ” appears when the memory
channel is selected.
r Push [EXIT/SET] to exit the memory channel
screen.
77
BW 2.4k SFT
VFO
COMP
OFF
WIDE
ROLL
qw:pp
USB
FIL2
qr.qot.pp
1ß
14.100.00
VFO
USB
USB
FIL2
qr.wpt.pp
ATT
OFF
AGC
MID
• [Y] and [Z] can also be used.
COMP
OFF
WIDE
ANT
METER
Po
FIL2
e Rotate the tuning dial while pushing [(F-2)SET] to
select the desired memory channel.
VOX
OFF
• [Y] and [Z] can also be used.
e Push [(F-3)SELECT] to set the memory channel
as a select memory or not.
MEMORY
99
P1
P2
ROLL
AGC
MID
q Select the memory channel screen as described at
left.
w Rotate the tuning dial while pushing [(F-1)ROLL]
or [(F-2)SET] to select the desired memory channel.
TX
TX
qr.wpt.pp
ATT
OFF
VOX
OFF
USB
Select memory channels are used for select memory
scan. Select memory scan repeatedly scans the select memory channels only. This is useful to speed up
the memory scan interval. Of course, select memory
channels are also scanned during normal memory
scan.
FIL2
qr.qot.pp
P.AMP
AGC
MID
qw:pp
USB
• Setting a memory channel as a select
memory
1ß
14.100.00
USB
MEMORY
99
P1
P2
1ß
--.---.-0.500.00
29.999.99
14.100.00
--.---.---.---.---.---.--
SET
-----LSB
USB
USB
----------------
SELECT
--FL2
FL2
FL2
-------
NAME
SCAN EDGE
SCAN EDGE
WIDE
“ß” appears for select memory channel.
r Repeat steps w to e to program another memory
channel as a select memory channel, if desired.
t Push [EXIT/SET] to exit the memory channel
screen.
Setting select memory channels is also possible in
the scan screen.
MEMORY OPERATION
■ Memory channel programming
Memory channel programming can be preformed either in VFO mode or in memory mode.
• Programming in VFO mode
q Set the desired frequency and operating mode in
VFO mode.
w Push [Y]/[Z] several times to select the desired
memory channel.
• Memory channel screen is convenient for selecting the
desired channel.
• Memory channel contents appear in the memory channel readout (below the frequency readout).
• “--.---.--” appears if the selected memory channel is a
blank channel (and does not have contents).
[EXAMPLE]: Programming 7.088 MHz/LSB into
memory channel 12.
ANT
BW 2.4k SFT
VFO
TX
TX
METER
Po
FIL2
qr.qpp.pp
SSB
BW 2.4k SFT
TX
TX
USB
14.195.00
ANT
qw:pp
USB
VFO
qw:pp
LSB
FIL2
u.pii.pp
METER
Po
USB
14.195.00
e Push [MW] for 1 sec. to program the displayed frequency and operating mode into the memory
channel.
or
ANT
BW 2.4k SFT
TX
TX
VFO
FIL2
u.pii.pp
METER
Po
--.---.--
12
12
Beep
Beep
Beep
MW
ANT
qw:pp
LSB
BW 2.4k SFT
TX
TX
VFO
Push for 1 sec.
qw:pp
LSB
FIL2
u.pii.pp
METER
Po
LSB
7.088.00
12
12
• Programming in memory mode
q Select the desired memory channel with [Y]/[Z] in
memory mode.
• Memory channel contents appear in the memory channel readout (below the frequency readout).
• “--.---.--” appears if the selected memory channel is a
blank channel (and does not have contents).
w Set the desired frequency and operating mode in
memory mode.
• To program a blank channel, use direct frequency entry
with the keypad or memo pads, etc.
[EXAMPLE]: Programming 21.280 MHz/USB into
memory channel 18.
ANT
BW 2.4k SFT
12
TX
TX
qw:pp
LSB
FIL2
u.pii.pp
METER
Po
USB
14.195.00
VFO
VFO
or
ANT
500 SFT
BW
18
TX
TX
21
SSB
BW 2.4k SFT
18
TX
TX
METER
Po
FIL2
14.195.00
Beep
Beep
Beep
MW
BW 2.4k SFT
TX
TX
METER
Po
qw:pp
USB
wq.wip.pp
VFO
VFO
ANT
qw:pp
USB
14.195.00
VFO
VFO
ANT
BPF
FIL2
e.tpw.pp
METER
Po
e Push [MW] for 1 sec. to program the displayed frequency and operating mode into the memory
channel.
CW
18
USB
Push for 1 sec.
qw:pp
USB
FIL2
wq.wip.pp
14.195.00
USB
78
8
MEMORY OPERATION
■ Frequency transferring
The frequency and operating mode in a memory channel can be transferred to the VFO.
• Transferring in VFO mode
This is useful for transferring programmed contents to
VFO.
q Select VFO mode with [VFO/MEMO].
w Select the memory channel to be transferred with
[Y]/[Z].
• Memory channel screen is convenient for selecting the
desired channel.
• Memory channel contents appear in the memory channel readout (below the frequency readout).
• “--.---.--” appears if the selected memory channel is a
blank channel. In this case transferring is impossible.
e Push [VFO/MEMO] for 1 sec. to transfer the frequency and operating mode.
Frequency transferring can be performed in either VFO
mode or memory mode.
TRANSFERRING EXAMPLE IN VFO MODE
Operating frequency
: 21.320 MHz/USB (VFO)
Contents of M-ch 16
: 14.018 MHz/CW
ANT
BW 2.4k SFT
TX
TX
VFO
14.950.00
ANT
BW 2.4k SFT
TX
TX
VFO
16
16
VFO
e To return to VFO mode, push [VFO/MEMO] momentarily.
CW
CW
Push for 1 sec.
BPF
qw:pp
FIL2
qr.pqi.pp
14.018.00
CW
TRANSFERRING EXAMPLE IN MEMORY MODE
Operating frequency
: 14.020 MHz/CW (M-ch 16)
Contents of M-ch 16
: 14.018 MHz/CW
ANT
500 SFT
BW
16
TX
TX
METER
Po
CW
21.320.00
VFO
VFO
Beep
Beep
Beep
VFO/
MEMO
ANT
500 SFT
BW
16
TX
TX
METER
Po
BPF
qw:pp
FIL2
qr.pwp.pp
CW
USB
Push for 1 sec.
BPF
qw:pp
FIL2
qr.pwp.pp
VFO
VFO
w Push [VFO/MEMO] for 1 sec. to transfer the frequency and operating mode.
• Displayed frequency and operating mode are transferred to the VFO.
Beep
Beep
Beep
500 SFT
BW
16
16
• And, set the frequency or operating mode if required.
FIL2
14.018.00
VFO/
MEMO
METER
Po
q Select the memory channel to be transferred with
[Y]/[Z] in memory mode.
qw:pp
USB
wq.ewp.pp
METER
Po
TX
TX
When you have changed the frequency or operating mode in the selected memory channel:
• Displayed frequency and mode are transferred.
• Programmed frequency and mode in the memory channel are not transferred, and they remain
in the memory channel.
USB
or
ANT
This is useful for transferring frequency and operating mode while operating in memory mode.
FIL2
wq.ewp.pp
METER
Po
• Transferred frequency and operating mode appear on
the frequency readout.
• Transferring in memory mode
qw:pp
USB
14.020.00
CW
VFO/
MEMO
ANT
BW
TX
TX
METER
Po
500 SFT
VFO
CW
BPF
qw:pp
FIL2
qr.pwp.pp
16
16
14.018.00
CW
Programmed contents appear.
79
MEMORY OPERATION
■ Memory names
All memory channels (including scan edges) can be
tagged with alphanumeric names of up to 10 characters each.
r Push [(F-4)NAME] to edit memory channel name.
• A cursor appears and blinks.
• Memory channel names of blank channels cannot be
edited.
Capital letters, small letters, numerals, some symbols
(! # $ % & ¥ ? " ’ ` ^ + – ✱ / . , : ; = < > ( ) [ ] { } | _ )
and spaces can be used.
BW 2.4k SFT
TX
TX
VFO
• Editing (programming) memory names
ANT
BW 2.4k SFT
TX
TX
METER
Po
VFO
14.100.00
VFO
ROLL
Selected
character
FIL2
Character
group
keys
14.100.00
ABC
99
P1
P2
ABC
123
ç
USB
USB
USB
MEMORY
--.---.-0.500.00
29.999.99
14.100.00
--.---.---.---.---.---.--
-----LSB
USB
USB
----------------
SCAN EDGE
SCAN EDGE
SPACE
DEL
å
--FL2
FL2
FL2
-------
WIDE
t Input the desired character by rotating the tuning
dial or by pushing the band key for number input.
FIL2
qr.wpt.pp
ATT
OFF
COMP
OFF
WIDE
USB
qr.wpt.pp
FIL2
14.100.00
VOX
OFF
VFO
USB
qr.qot.pp
P.AMP
AGC
MID
qw:pp
USB
FIL2
qr.qot.pp
q Push [EXIT/SET] several times to close a multifunction screen, if necessary.
w Push [(F-4)MEMORY] to select the memory channel screen.
qw:pp
USB
USB
14.100.00
MEMORY
99
P1
P2
--.---.-0.500.00
29.999.99
14.100.00
--.---.---.---.---.---.--
SET
-----LSB
USB
USB
----------------
--FL2
FL2
FL2
-------
SELECT
SCAN EDGE
SCAN EDGE
NAME
WIDE
e Select the desired memory channel.
• Push [ABC] or [abc] to toggle capital and small letters.
• Push [123] or [etc] to toggle numerals and symbols.
• Push [(F-1)Ω] or [(F-2)≈] for cursor movement.
• Push [(F-3)DEL] to delete the selected character.
• Push [(F-4)SPACE] to input a space.
• Pushing the transceiver’s keypad, [0]–[9], can also
enter numerals.
y Push [EXIT/SET] to input and set the name.
• The cursor disappears.
u Repeat steps e to y to program another memory
channel’s name, if desired.
i Push [EXIT/SET] to exit the memory channel
screen.
■ Memory clearing
Any unnecessary memory channels can be cleared.
The cleared memory channels become blank channels.
q Select memory mode with [VFO/MEMO].
w Select the desired memory channel with [Y]/[Z].
e Push [M-CL] for 1 sec. to clear the contents.
• The programmed frequency and operating mode disappear.
r To clear other memory channels, repeat steps w
and e.
ANT
BW 2.4k SFT
TX
TX
METER
Po
12
FIL2
wr.oyp.pp
14.195.00
VFO
VFO
Beep
Beep
Beep
M-CL
ANT
qw:pp
USB
BW 2.4k SFT
TX
TX
CW
Push for 1 sec.
qw:pp
12
≥qot≥pp
METER
Po
VFO
VFO
14.195.00
CW
80
8
MEMORY OPERATION
■ Memo pads
The transceiver has a memo pad function to store frequency and operating mode for easy write and recall.
The memo pads are separate from memory channels.
The default number of memo pads is 5, however, this
can be increased to 10 in set mode if desired. (p. 101)
Memo pads are convenient when you want to memorize a frequency and operating mode temporarily, such
as when you find a DX station in a pile-up, or when a
desired station is busy for a long time and you want to
temporarily search for other stations.
Use the transceiver’s memo pads instead of relying on
hastily scribbled notes that are easily misplaced.
• Writing frequencies and operating
modes into memo pads
You can simply write the accessed readout frequency
and operating mode by pushing [MP-W].
Displayed frequency and mode
Push
USB
When you write a 6th frequency and operating mode,
the oldest written frequency and operating mode are
automatically erased to make room for the new settings.
Each memo pad must have its own unique combination of frequency and operating mode; memo
pads having identical settings cannot be written.
MP-W
wq.wii.ww
USB
qr.qot.pp
Newest
USB
qr.qiw.rp
MEMO
PADS
USB
wq.pqi.py
USB
wq.pwr.tw
USB
wq.wuy.pp
Oldest
The oldest written frequency
and mode are erased.
• Calling up a frequency from a memo pad
You can simply call up the desired frequency and operating mode of a memo pad by pushing [MP-R] several times.
MEMO PADS
• Both VFO and memory modes can be used.
• The frequency and operating mode are called up, starting
from the most recently written.
When you call up a frequency and an operating mode
from memo pads with [MP-R], the previously displayed frequency and operating mode are automatically stored in a temporary pad. The frequency and
operating mode in the temporary pad can be recalled
by pushing [MP-R] several times.
• You may think there are 6 memo pads because 6 different
frequencies (5 are in memo pads and 1 is in the temporary pad) are called up by [MP-R].
If you change the frequency or operating mode
called up from a memo pad with the tuning dial,
etc., the frequency and operating mode in the temporary pad are erased.
81
USB
Push
MP-R
qr.qot.pp
USB
qr.qiw.rp
VFO or MEMORY
mode display
USB
wq.pqi.py
USB
USB
qr.qot.pp
Pushing [MP-R] calls up the
frequency and operating
mode in a memo pad and
the temporary pad sequentially.
wq.pwr.tw
USB
wq.wuy.pp
TEMPORARY PAD
USB
wq.rit.pp
Frequency and mode before
pushing [MP-R].
9
SCANS
■ Scan types
• The scan function can be used on the main readout only.
• You can operate a scan while operating on a frequency using
the dualwatch or split functions. See p. 57 for details.
PROGRAMMED SCAN
∂F SCAN
Repeatedly scans between two scan edge frequencies
(scan edge memory channels P1 and P2).
Repeatedly scans within ∂F span area.
Scan edge
P1 or P2
Scan edge
P2 or P1
Start frequency
–∂F frequency
+∂F frequency
Scan
Scan
Scan
Jump
Jump
This scan operates in VFO mode.
This scan operates in both VFO and memory modes.
MEMORY SCAN
SELECT MEMORY SCAN
Repeatedly scans all programmed memory channels.
Repeatedly scans all select memory channels.
ß (select)
Blank channel
Mch 3
Mch 4
Mch 2
Mch 1
ß (select)
ß (select)
Mch 99
Mch 7
ß (select)
ß (select)
Mch 2
Mch 5
Mch 1
Blank channel
Mch 3
Mch 4
ß (select)
ß (select)
Mch 6
This scan operates in memory mode.
ß (select)
Mch 99
Mch 7
ß (select)
ß (select)
Mch 5
Mch 6
This scan operates in memory mode.
■ Preparation
• Channels
• Scan speed
For programmed scan:
Program scan edge frequencies into scan edge memory channels P1 and P2.
Scan speed can be selected from 2 levels, high or low,
in set mode. See p. 86 for details.
For ∂F scan:
Set the ∂F span (∂F scan range) in the scan screen.
For memory scan:
Program 2 or more memory channels except scan
edge memory channels.
For select memory scan:
Designate 2 or more memory channels as select memory channels. To designate the channel as a select
memory channel, choose a memory channel, then
push [(F-3)SELECT] in the scan screen (memory
mode) or in the memory channel screen.
• Scan resume ON/OFF
• Squelch condition
SCAN
STARTS
WITH
PROGRAMMED
SCAN
The scan continues
until it is stopped
SQUELCH manually, and does
OPEN
not pause even if it
detects signals.
MEMORY SCAN
Scan pauses on
each channel when
the scan resume is
ON; not applicable
when OFF.
Scan stops when detecting a signal.
If you set scan resume ON in set mode, the
SQUELCH scan pauses for 10 sec. when detecting a
CLOSED signal, then resumes. When a signal disappears while scan is paused, scan resumes
2 sec. later.
You can select the scan to resume or cancel when detecting a signal, in set mode. Scan resume ON/OFF
must be set before operating a scan. See p. 86 for
ON/OFF setting and scan resume condition details.
82
9
SCANS
■ Programmed scan operation
q Push [EXIT/SET] several times to close a multifunction screen, if necessary.
w Select VFO mode.
e Select the desired operating mode.
• The operating mode can also be changed while scanning.
r Push [(F-5)SCAN] to select the scan screen.
VOX
OFF
COMP
OFF
WIDE
• Decimal points blink while scanning.
ANT
BW 2.4k SFT
TX
TX
METER
Po
VFO
qw:pp
USB
FIL2
qr.qot.pp
14.100.00
P.AMP
VFO
USB
14.100.00
Span
Programmed
scan edges
∂F
PROG
P1:
P2:
±
PROGRAM SCAN
10kHz
VOX
OFF
0.500.00MHz
29.999.99MHz
∂ F SPAN
FINE
USB
SCAN
AGC
MID
∂F
USB
FIL2
qr.wpt.pp
ATT
OFF
SCAN
AGC
MID
y Push [(F-1)PROG] to start the programmed scan.
SET
COMP
OFF
WIDE
∂F
Span
Programmed
scan edges
P1:
P2:
∂F
PROG
±
10kHz
0.500.00MHz
29.999.99MHz
FINE
∂ F SPAN
SET
t Set [RF/SQL] open or closed.
• See previous page for scan condition.
• If the [RF/SQL] control function is set as “AUTO,” the
squelch is always open in SSB, CW and RTTY modes.
See pgs. 2, 30, 98 for details.
u When the scan detects a signal, the scan stops,
pauses or ignores it depending on the resume setting and the squelch condition.
i To cancel the scan, push [(F-1)PROG].
If the same frequencies are programmed into the
scan edge memory channel P1 and P2, programmed scan does not start.
■ ∂F scan operation
q Push [EXIT/SET] several times to close a multifunction screen, if necessary.
w Select VFO mode or a memory channel.
e Select the desired operating mode.
• The operating mode can also be changed while scanning.
r Push [(F-5)SCAN] to select the scan screen.
VOX
OFF
COMP
OFF
WIDE
PROG
• Decimal points blink while scanning.
ANT
BW 2.4k SFT
TX
TX
METER
Po
VFO
FIL2
14.100.00
P.AMP
qw:pp
USB
qr.qot.pp
VFO
USB
FIL2
14.100.00
Span
Programmed
scan edges
∂F
P1:
P2:
±
10kHz
VOX
OFF
0.500.00MHz
29.999.99MHz
FINE
∂ F SPAN
SET
COMP
OFF
WIDE
PROG
USB
SCAN
AGC
MID
∂F
USB
qr.wpt.pp
ATT
OFF
SCAN
AGC
MID
i Push [(F-2)∂F] to start the ∂F scan.
∂F
SCAN
∂F
∂F
Center
Span
Programmed
scan edges
∂F
14.195.00MHz
±
10kHz
P1:
P2:
0.500.00MHz
29.999.99MHz
FINE
∂ F SPAN
SET
t Set [RF/SQL] open or closed.
• See previous page for scan condition.
• If the [RF/SQL] control function is set as “AUTO,” the
squelch is always open in SSB, CW and RTTY modes.
See pgs. 3, 69 for details.
y Set the ∂F span by pushing [(F-4)∂F SPAN].
• ±5 kHz, ±10 kHz, ±20 kHz, ±50 kHz, ±100 kHz,
±500 kHz and ±1000 kHz are selectable.
u Set center frequency of the ∂F span.
83
o When the scan detects a signal, the scan stops,
pauses or ignores it depending on the resume setting and the squelch condition.
!0 To cancel the scan, push [(F-2)∂F].
SCANS
■ Fine programmed scan/fine ∂F scan
Fine scan functions as programmed or ∂F scan, but
scan speed decreases when the squelch opens but
does not stop. The scanning tuning step shifts from
50 Hz to 10 Hz while the squelch opens.
q Push [EXIT/SET] several times to close a multifunction screen, if necessary.
w Push [(F-5)SCAN] to select the scan screen.
e Set for programmed scan or ∂F scan as described
on previous page.
r Push [(F-1)PROG] or [(F-2)∂F] to start a scan.
• Decimal points blink while scanning.
ANT
BW 2.4k SFT
TX
TX
METER
Po
VFO
USB
FIL2
14.100.00
P.AMP
VFO
USB
USB
14.100.00
SCAN
PROGRAM SCAN
VOX
OFF
COMP
OFF
WIDE
∂F
Span
Programmed
scan edges
P1:
P2:
∂F
PROG
±
METER
Po
VFO
qw:pp
USB
FIL2
qr.qot.pp
14.100.00
P.AMP
VFO
USB
USB
FIL2
qr.wpt.pp
ATT
OFF
14.100.00
USB
SCAN
AGC
MID
FINE PROGRAM SCAN
COMP
OFF
WIDE
∂F
Span
Programmed
scan edges
P1:
P2:
∂F
±
10kHz
0.500.00MHz
29.999.99MHz
∂ F SPAN
FINE
SET
y When the scan detects a signal, the scan speed
decreases but does not stop.
u Push [(F-1)PROG] or [(F-2)∂F] to stop the scan;
push [(F-3)FINE] to cancel the fine scan.
FIL2
AGC
MID
BW 2.4k SFT
TX
TX
USB
qr.wpt.pp
ATT
OFF
ANT
PROG
qr.qot.pp
• “FINE PROGRAM SCAN” or “FINE ∂F SCAN” appears.
VOX
OFF
qw:pp
t Push [(F-3)FINE] to start a fine scan.
10kHz
0.500.00MHz
29.999.99MHz
∂ F SPAN
FINE
SET
■ Memory scan operation
q Push [EXIT/SET] several times to close a multifunction screen, if necessary.
w Select memory mode.
e Push [(F-5)SCAN] to select the scan screen.
ANT
BW 2.4k SFT
12
TX
TX
METER
Po
USB
FIL2
14.100.00
VFO
USB
FIL2
VOX
OFF
MEMO
METER
Po
Span
∂F
P1:
P2:
±
qw:pp
USB
FIL2
qr.qot.pp
14.100.00
VFO
USB
USB
FIL2
qr.wpt.pp
14.100.00
USB
SCAN
MEMORY SCAN
COMP
OFF
WIDE
Programmed
scan edges
12
VFO
VFO
VOX
OFF
SCAN
∂F
BW 2.4k SFT
TX
TX
AGC
MID
USB
14.100.00
AGC
MID
ANT
ATT
OFF
qr.wpt.pp
ATT
OFF
COMP
OFF
WIDE
USB
• Decimal points blink while scanning.
P.AMP
qr.qot.pp
VFO
VFO
P.AMP
qw:pp
t Push [(F-1)MEMO] to start the memory scan.
10kHz
MEMO
∂F
Span
Programmed
scan edges
∂F
P1:
P2:
±
10kHz
0.500.00MHz
29.999.99MHz
SELECT
∂ F SPAN
SET
0.500.00MHz
29.999.99MHz
SELECT
∂ F SPAN
SET
r Set [RF/SQL] open or closed.
• See p. 82 for scan condition.
• If the [RF/SQL] control function is set as “AUTO,” the
squelch is always open in SSB, CW and RTTY modes.
See pgs. 2, 30, 98 for details.
y When the scan detects a signal, the scan stops,
pauses or ignores it depending on the resume setting and the squelch condition.
u To cancel the scan, push [(F-1)MEMO].
2 or more memory channels must be programmed
for memory scan to start.
84
9
SCANS
■ Select memory scan operation
q Push [EXIT/SET] several times to close a multifunction screen, if necessary.
w Select memory mode.
e Push [(F-5)SCAN] to select the scan screen.
ANT
BW 2.4k SFT
12
TX
TX
METER
Po
P.AMP
USB
USB
VOX
OFF
COMP
OFF
WIDE
Span
Programmed
scan edges
∂F
MEMO
P1:
P2:
±
COMP
OFF
WIDE
10kHz
0.500.00MHz
29.999.99MHz
qr.wpt.pp
14.100.00
USB
SCAN
∂F
Span
Programmed
scan edges
∂F
MEMO
∂ F SPAN
SELECT
USB
FIL2
SELECT MEMORY SCAN
VOX
OFF
∂F
USB
AGC
MID
USB
SCAN
AGC
MID
FIL2
14.100.00
VFO
ATT
OFF
FIL2
qw:pp
USB
qr.qot.pp
P.AMP
USB
14.100.00
12ß
12
VFO
VFO
qr.wpt.pp
BW 2.4k SFT
TX
TX
METER
Po
FIL2
14.100.00
VFO
ATT
OFF
ANT
qw:pp
qr.qot.pp
VFO
VFO
y Push [(F-3)SELECT] to start select memory scan;
push [(F-3)SELECT] again to return to memory
scan, if desired.
P1:
P2:
±
10kHz
0.500.00MHz
29.999.99MHz
∂ F SPAN
SELECT
SET
SET
r Set [RF/SQL] open or closed.
• See p. 82 for scan condition.
• If the [RF/SQL] control function is set as “AUTO,” the
squelch is always open in SSB, CW and RTTY modes.
See pgs. 2, 30, 98 for details.
t Push [(F-1)MEMO] to start the memory scan.
• Decimal points blink while scanning.
u When the scan detects a signal, the scan stops,
pauses or ignores it depending on the resume setting and the squelch condition.
i To cancel the scan, push [(F-1)MEMO].
2 or more memory channels must be designated
as select memory channels for select memory
scan to start.
■ Setting select memory channels
q Push [EXIT/SET] several times to close a multifunction screen, if necessary.
w Select memory mode.
e Push [(F-5)SCAN] to select the scan screen.
ANT
BW 2.4k SFT
12
TX
TX
METER
Po
FIL2
14.100.00
VFO
USB
14.100.00
VOX
OFF
COMP
OFF
WIDE
MEMO
P.AMP
Span
Programmed
scan edges
∂F
P1:
P2:
±
USB
qw:pp
USB
FIL2
qr.qot.pp
14.100.00
VFO
USB
VOX
OFF
10kHz
∂ F SPAN
COMP
OFF
WIDE
SET
r Select the desired memory channel to set as a select memory channel.
MEMO
USB
FIL2
qr.wpt.pp
14.100.00
USB
SCAN
AGC
MID
0.500.00MHz
29.999.99MHz
SELECT
12ß
12
ATT
OFF
SCAN
∂F
BW 2.4k SFT
VFO
FO
FIL2
AGC
MID
ANT
METER
Po
USB
qr.wpt.pp
ATT
OFF
“ß” appears for select memory channels.
TX
TX
qr.qot.pp
VFO
VFO
P.AMP
qw:pp
USB
t Push [(F-3)SELECT] to set the memory channel
as a select memory or not.
∂F
Span
Programmed
scan edges
∂F
P1:
P2:
±
10kHz
0.500.00MHz
29.999.99MHz
SELECT
∂ F SPAN
SET
y Repeat steps r to t to program another memory
channel as a select memory channel, if desired.
u Push [EXIT/SET] to exit the scan screen.
Select memory channels can also be set in the
memory channel screen. (p. 77)
85
SCANS
■ Scan set mode
Scan set mode is used for programming scanning
speed and scan resume condition.
• Scan speed
The transceiver has 2 speeds for scanning, high and
low.
q Push [EXIT/SET] several times to close a multifunction screen, if necessary.
w Push [(F-5)SCAN] to select the scan screen.
SCAN
AGC
MID
VOX
OFF
∂F
COMP
OFF
WIDE
PROG
Span
Programmed
scan edges
±
P1:
P2:
∂F
10kHz
0.500.00MHz
29.999.99MHz
FINE
∂ F SPAN
• Scan resume condition
This item sets the scan resume function ON or OFF.
ON: scan resumes 10 sec. after stopping on a signal
(or 1 sec. after a signal disappears); OFF: scan does
not resume after stopping on a signal.
q Push [EXIT/SET] several times to close a multifunction screen, if necessary.
w Push [(F-5)SCAN] to select the scan screen.
e Push [(F-5)SET] to select the scan set mode
screen.
r Push [(F-2)Z] to select the scan resume condition
item.
SCAN SET
AGC
MID
SCAN Speed
SCAN Resume
SET
HIGH
ON
VOX
OFF
e Push [(F-5)SET] to select the scan set mode
screen.
r Push [(F-1)Y] to select the scan speed item.
S C A N Speed
Speed
S C A N Resume
Resume
é
è
DEF
t Rotate the tuning dial to turn the scan resume
function ON or OFF.
SCAN SET
AGC
MID
COMP
OFF
WIDE
HIGH
IGH
ON
ON
• Push [(F-3)DEF] to select the default condition.
VOX
OFF
y Push [EXIT/SET] to exit the scan set mode.
COMP
OFF
WIDE
é
è
DEF
t Rotate the tuning dial to select the scan speed.
• Push [(F-3)DEF] to select the default condition.
y Push [EXIT/SET] to exit the scan set mode.
■ Tone scan
The transceiver can detect the subaudible tone frequency in a received signal. By monitoring a signal
that is being transmitted on a repeater input frequency, you can determine the tone frequency required to access the repeater.
q Set the desired frequency or memory channel to
be checked for a tone frequency.
w Push [AM/FM] several times to select FM mode.
e Push [TONE] for 1 sec. to enter the tone frequency
screen.
VOX
OFF
REPEATER TONE
88.5Hz
T-SQL TONE
88.5Hz
TONE
OFF
é
è
DEF
• “SCAN” flashes while scanning.
AGC
FAST
VOX
OFF
TONE FREQUENCY
REPEATER TONE
188.8Hz
T-SQL TONE
88.5Hz
SCAN
TONE
T-SCAN
y When the tone frequency is detected, the tone
scan pauses.
• The tone frequency is set temporarily on a memory
channel. Program into the memory channel to store the
tone frequency permanently.
• The decoded tone frequency is used for the repeater
tone frequency or tone squelch frequency.
TONE FREQUENCY
AGC
FAST
t Push [(F-5)T-SCAN] to start the tone scan.
T-SCAN
r Push [(F-1)Y] or [(F-2)Z] to check the repeater
tone frequency or tone squelch frequency, respectively. (pgs. 52, 53)
u To stop the scan, push [(F-5)T-SCAN].
i Push [EXIT/SET] to exit the tone frequency
screen.
86
10
ANTENNA TUNER OPERATION
■ Automatic antenna selection
The transceiver covers 0.1–60 MHz over 10 bands.
Each band key has a band memory which can memorize a selected antenna (ANT1, ANT2, ANT1/RX antenna and ANT2/RX antenna). When you change the
operating frequency beyond a band, the previously
used antenna is automatically selected for the new
band. This function is convenient when you use 2 or 3
antennas.
To use the band memory, enter set mode and confirm
that “Auto” is selected as the [ANT] switch item.
(p. 100)
AGC
MID
VOX
OFF
COMP
OFF
WIDE
é
O T H E R S SET
OTHERS
SET
F M S P L IT
I T Offset(HF)
Offset(HF)
F M S P L IT
I T Offset(50M)
Offset(50M)
S P L I T LOCK
LOCK
T u n e r (Auto
( A u t o Start)
Start)
T u n e r (PTT
( P T T Start)
Start)
[ A N T ] Switch
Switch
R T T Y M ark
a r k Frequency
Frequency
è
DEF
-0.100MHz
0.100MHz
-0.500MHz
-0.500MHz
OFF
OFF
OFF
OFF
OFF
OFF
Auto
Auto
2125
2125
WIDE
• When OFF is selected, the [ANT] switch does not function
and [ANT1] is always selected.
• When “Manual” is selected, the [ANT] switch functions,
however, band memory does not function. In this case,
you must select an antenna manually.
• When “Auto” is selected (default setting), the antenna
tuner ON/OFF condition is also memorized in the band
memory.
• When “Auto” or “Manual” is selected, the antenna tuner
ON/OFF condition is consistent with the [ANT] switch.
87
• Antenna switch selection example
Under the following condition, “Auto” should be selected as the [ANT] switch set mode item.
- When you use 2 antennas.
Under the following conditions, “Manual” should be
selected as the [ANT] switch set mode item.
- When using 1 antenna.
- When using an external antenna selector for more
than 3 antennas (except for receive antenna).
- When using an external antenna tuner.
ANTENNA TUNER OPERATION
10
■ Antenna tuner operation
The internal automatic antenna tuner matches the
transceiver to the connected antenna automatically.
Once the tuner matches an antenna, the variable capacitor angles are memorized as a preset point for
each frequency range (100 kHz steps). Therefore,
when you change the frequency range, the variable
capacitors are automatically preset to the memorized
point.
TUNER OPERATION
➥ Push the [TUNER] switch to turn the internal antenna tuner ON. The antenna is tuned automatically when the antenna SWR is higher than 1.5:1.
CAUTION: NEVER transmit with the tuner ON
when no antenna is connected. This will damage
the transceiver. Be careful of the antenna selection.
[TUNER] switch
• When the tuner is ON, the [TUNER] switch lights.
MANUAL TUNING
During SSB operation at low voice levels, the internal
tuner may not be tuned correctly. In such cases, manual tuning is helpful.
Push [TUNER] for 1 sec.
➥ Push [TUNER] for 1 sec., to start manual tuning.
• A side tone is emitted and [TUNER] blinks while tuning.
• If the tuner cannot reduce the SWR to less than 1.5:1
after 20 sec. of tuning, the [TUNER] switch indicator
goes out.
AUTOMATIC TUNER START (HF bands only)
If you want to deactivate the tuner under conditions
of VSWR 1.5:1 or less, use the auto tuner start function and turn the tuner OFF. This function activates
the tuner automatically when the SWR exceeds 1.5:1.
This function is turned ON in set mode. (p. 99).
PTT TUNER START
The tuner is always tuned when the PTT is pushed
after the frequency is changed (more than 1% from
last-tuned frequency). This function removes the
“push and hold [TUNER]” operation and activates for
the first transmission on a new frequency.
10
This function is turned ON in set mode. (p. 99).
NOTES:
• If the tuner cannot tune the antenna
Check the following and try again:
• the [ANT] connector selection.
• the antenna connection and feedline.
• the unaltered antenna SWR. (Less than 3:1 for HF bands;
Less than 2.5:1 for 50 MHz band)
• the transmit power. (8 W for HF bands; 15 W for 50 MHz
band)
• the power source voltage/capacity.
If the tuner cannot reduce the SWR to less than 1.5:1
after checking the above, perform the following:
• repeat manual tuning several times.
• tune with a 50 Ω dummy load and re-tune the antenna.
• turn power OFF and ON.
• adjust the antenna cable length.
(This is effective for higher frequencies in some cases.)
• Tuning a narrow bandwidth antenna
Some antennas, especially for low bands, have a narrow bandwidth. These antennas may not be tuned at
the edge of their bandwidth, therefore, tune such an
antenna as follows:
Suppose you have an antenna which has an SWR of
1.5:1 at 3.55 MHz and an SWR of 3:1 at 3.8 MHz.
q Push [TUNER] to turn the antenna tuner ON.
w Select CW mode.
e Turn OFF the break-in function. (pgs. 4, 66)
r Push [TRANSMIT] to set to the transmit condition.
t Set 3.55 MHz and key down.
y Set 3.80 MHz and key down.
u Push [TRANSMIT] to return to the receive condition.
88
10
ANTENNA TUNER OPERATION
■ Optional external tuner operation
• AH-4/AH-3 HF AUTOMATIC ANTENNA
TUNER
The AH-4 matches the IC-756PROIII to a long wire
antenna more than 7 m/23 ft long (3.5 MHz and above).
The AH-3 matches the IC-756PROIII to a long wire
antenna more than 3 m/10 ft long (3.5 MHz and above)
or more than 12 m/40 ft long (1.8 MHz and above).
• When connecting the AH-4/AH-3, the antenna
connector assignments are [ANT2] for the internal
tuner and [ANT1] for the AH-4/AH-3. The antenna
indicator in the LCD displays “ANT1(EXT)” when
the AH-4/AH-3 is connected and selected.
• See p. 19 for the transceiver and AH-4/AH-3 connection.
• See the AH-4/AH-3 instruction manual for AH-4/AH-3 installation and antenna connection details.
• The AH-3 can be used for HF bands only. It cannot be used for the 50 MHz band.
AH-4/AH-3 setting example:
• AH-4/AH-3 operation
For mobile operation
Optional AH-2b
antenna element
Tuning is required for each frequency. Be sure to
re-tune the antenna before transmitting when you
change the frequency—even slightly.
q Set the desired frequency in an HF or 50 MHz
band for use with the AH-4. Set the desired frequency in an HF band for use with the AH-3.
For outdoor operation
• The AH-4/AH-3 will not operate on frequencies outside
of ham bands.
Long wire
w Push [TUNER] for 1 sec.
• The [TUNER] light blinks while tuning.
[TUNER] switch
R WARNING: HIGH VOLTAGE!
NEVER touch the antenna element while tuning
or transmitting.
NEVER operate the AH-4/AH-3 without an antenna
wire. The tuner and transceiver will be damaged.
NEVER operate the AH-4/AH-3 when it is not
grounded.
Transmitting before tuning may damage the transceiver. Note that the AH-4/AH-3 cannot tune when
using a 1⁄2 λ long wire or multiple of the operating frequency.
e The [TUNER] light lights constantly when tuning is
complete.
• When the connected wire cannot be tuned, the
[TUNER] light goes out and the AH-4/AH-3 is bypassed. At that point the antenna wire connection rout
is to the transceiver directly, and not via the AH-4/AH-3
antenna tuner.
r To bypass the AH-4/AH-3 manually, push [TUNER].
• ANTENNA TUNER OF THE IC-PW1
When using an external antenna tuner such as the
IC-PW1’s tuner, tune with the external antenna tuner,
while the internal tuner is turned OFF. After tuning is
completed, turn the internal tuner ON. Otherwise,
both tuners tune simultaneously and correct tuning
may not be obtained.
89
See the instruction manual included with each antenna tuner for their respective operations.
CLOCK AND TIMERS
11
■ Setting the current time
The transceiver has a built-in 24-hour clock with
power-off and power-on timer functions. This is useful
when logging QSO’s and so on. The clock indication
is always displayed except after pushing [F-INP].
q Push [EXIT/SET] several times to close a multifunction screen, if necessary.
w Push [EXIT/SET] for 1 sec. then [(F-4)TIME] to
enter timer set mode.
e Push [(F-1)Y] to select the Time (Now) item.
r Set the current time using the tuning dial.
• “TIME–set Push [SET]” blinks.
TIME SET
AGC
MID
VOX
OFF
COMP
OFF
WIDE
Time (Now)
CLOCK2 Function
CLOCK2 Offset
Timer Function
Power-ON Timer Set
Power-OFF Period
TIME-set
15:24
ON
0:00
ON
0:00
60min
Push [SET]
è
é
SET
t Push [(F-4)SET] to enter the set time.
• Push [EXIT/SET] to cancel the setting.
ANT
BW 2.4k SFT
TX
TX
METER
Po
VFO
USB
qw:pp
FIL2
Set time appears.
qr.qot.pp
14.100.00
P.AMP
qw:pp
VFO
USB
USB
ANT
FIL2
qr.wpt.pp
ATT
OFF
14.100.00
BW 2.4k SFT
TX
TX
METER
Po
USB
VFO
qt:wr
USB
qt:wr
FIL2
qr.qot.pp
14.100.00
USB
TIME SET
AGC
MID
VOX
OFF
COMP
OFF
WIDE
é
T i m e (Now)
(Now)
C L O C K2
K 2 Function
Function
C L O C K2
K 2 Offset
Offset
T i m e r Function
Function
P o w e r-ON
r - O N Timer
T i m e r Set
Set
P o w e r-OFF
r - O F F Period
Period
12:00
2:00
ON
ON
0:00
0:00
ON
ON
0:00
0:00
60min
60min
y Push [EXIT/SET] twice to exit timer set mode.
è
■ Timer function activity
The timer functions can be switched ON and OFF
q Push [EXIT/SET] several times to close a multifunction screen, if necessary.
w Push [EXIT/SET] for 1 sec. then [(F-4)TIME] to
enter timer set mode.
e Push [(F-1)Y] or [(F-2)Z] to select the Timer Function item.
VOX
OFF
COMP
OFF
WIDE
é
T i m e (Now)
(Now)
C L O CK2
C K 2 Function
Function
C L O CK2
C K 2 Offset
Offset
T i m er
e r Function
Function
P o w er-ON
e r - O N Timer
T i m e r Set
Set
P o w er-OFF
e r - O F F Period
Period
è
ON
: Activates the timer functions when [POWER]
is pushed momentarily. (default)
: Deactivates the timer functions even when
[POWER] is pushed momentarily.
OFF
TIME SET
AGC
MID
VOX
OFF
TIME SET
AGC
MID
r Select the timer function activity using the tuning
dial.
15:24
5:24
ON
ON
0:00
0:00
ON
ON
0:00
0:00
60min
60min
COMP
OFF
WIDE
é
Time (Now)
CLOCK2 Function
CLOCK2 Offset
Timer Function
Power-ON Timer Set
Power-OFF Period
è
15:24
ON
0:00
OFF
19:30
60min
10
11
SET
t Push [EXIT/SET] twice to exit timer set mode.
90
11
CLOCK AND TIMERS
■ Setting power-on time
The transceiver can be set to turn ON automatically at
a specified time.
q Push [EXIT/SET] several times to close a multifunction screen, if necessary.
w Push [EXIT/SET] for 1 sec. then [(F-4)TIME] to
enter timer set mode.
e Push [(F-1)Y] or [(F-2)Z] to select the Power-ON
Timer Set item.
r Set the desired power-on time using the tuning
dial.
• “TIMER–set Push [SET]” blinks.
TIME SET
AGC
MID
VOX
OFF
COMP
OFF
WIDE
Time (Now)
15:24
CLOCK2 Function
ON
CLOCK2 Offset
0:00
Timer Function
ON
Power-ON Timer Set
19:30
Power-OFF Period
60min
TIMER-set Push [SET]
è
é
SET
TIME SET
AGC
MID
VOX
OFF
COMP
OFF
WIDE
T i m e ( Now)
Now)
C L O C K 2 Function
Function
C L O C K 2 Offset
Offset
T i m e r Function
Function
P o w e r - ON
O N Timer
T i m e r Set
Set
P o w e r - OFF
O F F Period
Period
15:24
5:24
ON
ON
0:00
0:00
ON
ON
0:00
0:00
60min
60min
t Push [(F-4)SET] to enter the set time.
• Push [EXIT/SET] to cancel the setting.
y Push [EXIT/SET] twice to exit timer set mode.
è
é
■ Setting power-off period
The transceiver can be set to turn OFF automatically
after being activated via the power-on timer. The
power-off period can be set to 5–120 min. in 5 min.
steps.
r Set the desired power-off time using the tuning
dial.
• “TIMER – set
TIME SET
AGC
MID
q Push [EXIT/SET] several times to close a multifunction screen, if necessary.
w Push [EXIT/SET] for 1 sec. then [(F-4)TIME] to
enter timer set mode.
e Push [(F-2)Z] to select the Power-OFF Period
item.
VOX
OFF
COMP
OFF
WIDE
T i m e ( Now)
Now)
C L O C K 2 Function
Function
C L O C K 2 Offset
Offset
T i m e r Function
Function
P o w e r - ON
O N Timer
T i m e r Set
Set
P o w e r - OFF
O F F Period
Period
é
VOX
OFF
COMP
OFF
WIDE
é
Time (Now)
15:24
CLOCK2 Function
ON
CLOCK2 Offset
0:00
Timer Function
ON
Power-ON Timer Set
19:30
Power-OFF Period
45min
TIMER-set Push [SET]
è
SET
t Push [(F-4)SET] to enter the set time.
• Push [EXIT/SET] to cancel the setting.
TIME SET
AGC
MID
Push [SET]” blinks.
15:24
5:24
ON
ON
0:00
0:00
ON
ON
19:30
19:30
60min
60min
y Push [EXIT/SET] twice to exit timer set mode.
è
■ Timer operation
q Preset the power-on time and power-off period as
described previously.
w Push [POWER] momentarily to turn the timer function ON.
• The [POWER] light lights when the timer function is
ON.
[POWER]
e Push [POWER] for 1 sec. to turn the power OFF.
• The [POWER] light lights continuously.
r When the set time arrives, the power is automatically turned ON.
t The transceiver emits 10 beeps and turns OFF
after the power-off period elapses.
• The [POWER] light blinks while beeping.
• Push [POWER] momentarily to cancel the power-off
timer, if desired.
The timer function in timer set mode must be
turned ON to enable the timer operation. See page
97 for details.
91
12
SET MODE
■ Set mode description
t Push [(F-1)Y] or [(F-2)Z] to select the desired item.
y Set the desired condition using the tuning dial.
Set mode is used for programming infrequently
changed values or conditions of functions. This transceiver has a level set mode, display set mode, timer
set mode and miscellaneous (others) set mode.
• Push [(F-3)DEF] for 1 sec. to select a default condition
or value.
u For timer set mode, push [(F-4)SET] to enter the set
time.
i Push [EXIT/SET] twice to exit the set mode.
• Set mode operation
q Push [EXIT/SET] several times to close a multifunction screen, if necessary.
w Push [EXIT/SET] for 1 sec. to select the set mode
menu screen.
e Push [(F-1)LEVEL], [(F-2)DISP], [(F-3)DSP], [(F4)TIME] or [(F-5)OTHERS] to enter the desired set
mode.
r For display or miscellaneous (others) set mode,
push [(F-5)WIDE] to toggle wide and normal
screen.
• Start up screen
ANT
METER
Po
BW 2.4k SFT
VFO
TX
TX
• Display set mode (p. 95)
qw:pp
qw:pp
CW
FIL2
qr.qot.pp
P.AMP
VFO
USB
AGC
MID
USB
14.100.00
F-2
FIL2
qr.wpt.pp
ATT
0FF
1/4
OFF
USB
14.100.00
BK-IN
OFF
DISPLAY SET
Contrast (LCD)
Bright
(LCD)
Horizon
Backlight(Switches)
Display Type
Display Font
Memory Name
é
AGC
MID
è
60%
50%
Basic1
ON
WIDE
DEF
BK-IN
OFF
1/4
OFF
SCOPE
VOICE
MEMORY
KEYER
SCAN
• DSP set mode (p. 96)
Push
AGC
MID
EXIT/SET
for 1 sec.
F-3
• Set mode menu screen
ANT
METER
Po
BW 2.4k SFT
VFO
TX
TX
VFO
CW-FIL
SSB-FIL
qw:pp
USB
USB
FIL2
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ATT
0FF
1/4
OFF
SHARP
1/4
OFF
FIL2
14.100.00
BK-IN
OFF
CW
qr.qot.pp
P.AMP
AGC
MID
SHARP
BK-IN
OFF
qw:pp
CW
DSP FILTER SET
SSB
14.100.00
• Timer set mode (pgs. 91, 97)
USB
SET MODE
AGC
MID
S E T MODE
SET
M O D E MENU
MENU
LEVEL
LEVEL
T X Tone,Monitor,Side
TX
T o n e , M o n i t o r , S i d e Tone
T o n e etc
etc
DISP
DISP
Bright,Contrast,Style,Font
B r i g h t , C o n t r a s t , S t y l e , F o n t etc
etc
DSP
DSP
D S P Filter
DSP
F i l t e r Type
Type
TIME
TIME
Clock/Timer
Clock/Timer
OTHERS
OTHERS
O t h e r Set
Other
S e t Mode
Mode
LEVEL
DISP
DSP
F-4
BK-IN
OFF
1/4
OFF
TIME
é
OTHERS
TIME SET
Time (Now)
CLOCK2 Function
CLOCK2 Offset
Timer Function
Power-ON Timer Set
Power-OFF Period
12:00
ON
0:00
ON
0:00
60min
è
F-1
• Miscellaneous (others) set mode (p. 98)
• Level set mode (p. 93)
AGC
MID
BK-IN
OFF
1/4
OFF
é
L E V E L SET
LEVEL
SSB
SB
SSB
SSB
SSB
SSB
SSB
SSB
SSB
SSB
SSB
SSB
SSB
SSB
Tx
T x Tone
T o n e (Bass)
(Bass)
Tx
T x Tone
T o n e (Treble)
(Treble)
TBW
T B W (WIDE)
(WIDE) L
TBW
T B W (WIDE)
(WIDE) H
TBW
T B W (MID)
(MID)
TBW
T B W (MID)
(MID)
TBW
T B W (NAR)
(NAR)
è
DEF
AGC
MID
100
00
2900
2900
300
300
2700
2700
500
500
F5
BK-IN
OFF
1/4
OFF
é
OTHERS SET
Calibration Marker
Beep(Confirmation)
Beep(Band Edge)
RF/SQL Control
Quick Dualwatch
Quick SPRIT
FM SPLIT Offset(HF)
è
DEF
OFF
ON
ON
RF+SQL
ON
ON
-0.100MHz
WIDE
92
12
SET MODE
■ Level set mode
SSB Tx Tone (Bass)
This item adjusts the bass level of the transmit audio
tone in SSB mode from –5 dB to +5 dB in 1 dB steps.
0dB
0 dB (default)
SSB Tx Tone (Treble)
This item adjusts the treble level of the transmit audio
tone in SSB mode from –5 dB to +5 dB in 1 dB steps.
0dB
0 dB (default)
SSB TBW (WIDE) L
These items set the transmission passband width for
wide setting by selecting the lower and higher frequencies.
Lower freq. : 100 (default), 300 and 500 Hz
100
100 Hz (default)
SSB TBW (WIDE) H
These items set the transmission passband width for
wide setting by selecting the lower and higher frequencies.
Higher freq.: 2500, 2700 and 2900 Hz (default)
2900
2900 Hz (default)
SSB TBW (MID) L
These items set the transmission passband width for
middle setting by selecting the lower and higher frequencies.
Lower freq. : 100, 300 (default) and 500 Hz
300
300 Hz (default)
SSB TBW (MID) H
These items set the transmission passband width for
middle setting by selecting the lower and higher frequencies.
Higher freq.: 2500, 2700 (default) and 2900 Hz
2700
2700 Hz (default)
SSB TBW (NAR) L
These items set the transmission passband width for
narrow setting by selecting the lower and higher frequencies.
Lower freq. : 100, 300 and 500 Hz (default)
93
500
500 Hz (default)
SET MODE
12
■ Level set mode (continued)
SSB TBW (NAR) H
2500
These items set the transmission passband width for
narrow setting by selecting the lower and higher frequencies.
Lower freq. : 2500 (default), 2700 and 2900 Hz
2500 Hz (default)
Monitor Level
This item adjusts the transmit IF signal monitor level
from 0% to 100% in 1% steps.
50%
50% (default)
See p. 69 for details.
Side Tone Level
This item adjusts the CW side tone level from 0% to
100% in 1% steps.
50%
50% (default)
See p. 69 for details.
Side Tone Level Limit
This item allows you to set a maximum volume level
for CW side tones. CW side tones are linked to the
[AF] control until a specified volume level is reached
— further rotation of the [AF] control will not increase
the volume of the CW side tones.
ON
OFF
CW side tone level is limited CW side tone level is linked
with [AF] (default)
to [AF]
Beep Level
This item adjusts the volume level for confirmation
beep tones from 0% to 100% in 1% steps. When
beep tones are turned OFF, this setting has no effect.
50%
50% (default)
Beep Level Limit
This item allows you to set a maximum volume level
for confirmation beep tones. Confirmation beep tones
are linked to the [AF] control until a specified volume
level is reached — further rotation of the [AF] control
will not increase the volume of the beep tones.
ON
OFF
Beep level is limited with Beep level is linked to [AF]
[AF] (default)
94
12
SET MODE
■ Display set mode
To adjust the LCD contrast or backlight, wait until
the LCD becomes stable (10 min. or more after turning power ON). This is an inherent characteristic of
LCDs and LCD backlights and does not indicate a
transceiver malfunction.
Contrast (LCD)
60%
This item adjusts the contrast of the LCD from 0% to
100% in 1% steps.
60% (default)
Backlight (LCD)
50%
This item adjusts the brightness of the LCD from 0%
to 100% in 1% steps.
50% (default)
Horizon
This item adjusts the horizontal position of the LCD
from 1 to 8.
Horizontal position is 4. (default)
Backlight(Switches)
This item adjusts the brightness of the switches from
1 to 8.
Backlight level is 8. (Maximum; default)
Display Type
This item sets the LCD screen type. There are 8 selectable types: A, B, C, D, E, F, G and H.
A-type LCD screen (default)
Display Font
Italic2
This item sets the font of the frequency readouts.
There are 7 selectable fonts: Basic1, Basic2, Pop,
7seg (7 segment numeral), Italic 1, Italic 2 and Classic.
Italic 2 font (default)
Memory Name
This item sets the memory name indication ON and
OFF.
See p. 80 for details.
95
ON
OFF
Memory name is displayed. Memory name is not dis(default)
played.
SEST MODE
12
■ Display set mode (continued)
My Call
Your call sign, etc. can be displayed in the opening
screen when turning power ON. Up to 10 characters
can be programmed.
Capital letters, numerals, some symbols (– / . ) and
spaces can be used.
q Push [EXIT/SET] several times to close a multifunction screen, if necessary.
w Push [EXIT/SET] for 1 sec. then [(F-2)DISP] momentarily to select the display set mode screen.
e Push [(F-2)Z] several times to select the ‘My Call’
item.
t Input the desired character by rotating the tuning
dial or by pushing the band key for number input.
• Push [ABC] to select capital letters.
• Push [123] or [etc] to toggle numerals and symbols.
• Push [(F-1)Ω] or [(F-2)≈] for cursor movement.
• Push [(F-3)DEL] to delete the selected character.
• Push [(F-4)SPACE] to input a space.
y Push [EXIT/SET] to input the set name.
• The cursor disappears.
u Push [EXIT/SET] to exit the set mode screen.
• Opening screen example
DISPLAY SET
AGC
MID
VOX
OFF
COMP
OFF
WIDE
Brigh t
(LCD)
Horiz o n
Backl i g h t ( S w i t c h e s )
Displ a y T y p e
Displ a y F o n t
Memor y N a m e
My Cal l
é
50%
Basic1
ON
JA3YUA
è
NOW CALIBRATING
DIGITAL SIGNAL PROCESSOR
WIDE
EDIT
r Push [(F-4)EDIT] to edit.
PLEASE WAIT FOR 10sec.
ja3yua
• A cursor appears and blinks.
Selected
character
Character
group
keys
ABC
ABC
123
ç
DISPLAY SET
Bright
(LCD)
Horizon
Backlight(Switches)
Display Type
Display Font
Memory Name
My Call
å
DEL
50%
Basic1
ON
_A3YUA
SPACE
WIDE
■ DSP filter set mode
To suit your operating style, the type of DSP filter
shape for SSB and CW can be selected.
q Push the [EXIT/SET] several times to close a
multi-function screen, if necessary.
w Push the [EXIT/SET] switch for 1 sec. to enter set
mode.
e Push the [(F-3)DSP] switch to enter the DSP filter
set mode.
r Push one of [(F2)SSB-FIL] or [(F4)CW-FIL] to select the desired DSP filter shape from sharp and
soft for SSB or CW mode, respectively.
t Push [ENTER/SET] twice to exit the DSP filter set
mode.
AGC
MID
DSP FILTER SET
SSB
SHARP
CW
SHARP
BK-IN
OFF
1/4
OFF
SSB-FIL
Push
SSB
F-2
SOFT
CW-FIL
Push
CW
F-4
SOFT
96
12
SET MODE
■ Timer set mode
Time (Now)
15:00
This item sets the current time for the built-in 24-hour
clock.
Push [(F-4)SET] to enter the time.
See p. 90 for details.
CLOCK2 Function
This item turns the clock 2 indication ON and OFF.
The clock 2 is convenient to indicate the UTC or other
country’s local time, etc.
• ON : The clock 2 is displayed below the local time
indication.
• OFF : The clock 2 does not display.
ON
OFF
The clock 2 is displayed The clock 2 does not disbelow the local tiem.
play.
(default)
CLOCK2 Offset
+ 9:00
This item sets the desired off-set time period for the
clock 2 indication within –24:00 to +24:00 in 5 min.
steps.
Rotate tuning dial to set the time.
• Pushing [(F-3)DEF] for 1 sec. to select the default value.
Timer Function
This item sets the timer functions ON and OFF.
When the power-ON timer or the power-OFF timer is
used, “ON” must be selected in this item.
ON
OFF
The timer functions can be The timer functions cannot
operated. (default)
be operated.
See p. 90 for details.
Power-ON Timer set
This item sets the power-on time.
See p. 90 for details.
15:00
Push [(F-4)SET] to enter the time.
Power-OFF period
This item sets the power-off period for automatic shutdown after the power-on timer has turned power ON.
See p. 90 for details.
97
60min
Push [(F-4)SET] to enter the time.
SET MODE
12
■ Miscellaneous (others) set mode
Calibration Marker
This item is used for a simple frequency check of the
transceiver.
ON
OFF
Calibration marker ON
Calibration marker OFF
(default)
ON
OFF
Confirmation beep ON
(default)
Confirmation beep OFF
ON
OFF
Band edge beep ON
(default)
Band edge beep OFF
See p. 107 for calibration procedure.
Turn the calibration marker OFF after checking the
frequency of the transceiver.
Beep(Confirmation)
A beep sounds each time a switch is pushed to confirm it. This function can be turned OFF for silent operation.
The volume level can be set in level set mode. (p. 94)
Beep(Band Edge)
A beep sounds when an operating frequency enters
or exits an amateur band. This functions independent
of the confirmation beep setting (above).
The volume level can be set in level set mode. (p. 94)
RF/SQL Control
The [RF/SQL] control can be set as the RF/squelch
control (default), the squelch control only (RF gain is
fixed at maximum) or ‘Auto’ (RF gain control in SSB,
CW and RTTY; squelch control in AM and FM).
RF+SQL
[RF/SQL] control as RF/squelch control
(default)
SQL
[RF/SQL] control as squelch control
AUTO
[RF/SQL] control as RF gain control in SSB,
CW and RTTY; squelch control in AM and
FM
See pgs. 2, 30 for details.
Quick Dualwatch
When this item is set to ON, pushing [DUALWATCH]
for 1 sec. sets the sub readout frequency to the main
readout frequency and activates dualwatch operation.
ON
OFF
Quick dualwatch ON
(default)
Quick dualwatch OFF
ON
OFF
Quick split ON
(default)
Quick split OFF
See p. 63 for details.
Quick SPLIT
When this item is set to ON, pushing [SPLIT] for 1
sec. sets the sub readout frequency to the main readout frequency and activates split operation.
See p. 71 for details.
98
12
SET MMODE
■ Miscellaneous (others) set mode (continued)
FM SPLIT Offset(HF)
This item sets the offset (difference between transmit
and receive frequencies) for the quick split function.
However, this setting is used for HF bands in FM
mode only and is used to input the repeater offset for
an HF band.
-0.100MHz
-4.000MHz
Minus 0.1 MHz offset
(default)
Minus 4.0 MHz offset
The offset frequency can be set from –4 MHz to
+4 MHz in 1 kHz steps.
FM SPLIT Offset(50M)
This item sets the offset (difference between transmit
and receive frequencies) for the quick split function.
However, this setting is used for 50 MHz band FM
mode only, and is used to input the repeater offset for
the 50 MHz band.
-0.500MHz
+4.000MHz
Minus 0.5 MHz offset
(default)
Plus 4.0 MHz offset
The offset frequency can be set from –4 MHz to
+4 MHz in 1 kHz steps.
SPLIT LOCK
When this item is ON, the tuning dial can be used to
adjust the transmit frequency while pushing [XFC]
even while the lock function is activated.
ON
OFF
Split lock function ON
Split lock function OFF
(default)
ON
OFF
Automatic tuner start
ON
Automatic tuner start
OFF (default)
ON
OFF
Automatic PTT start
ON
Automatic PTT start
OFF (default)
See p. 70 for split frequency operation details.
Tuner (Auto Start)
The internal antenna tuner has an automatic start capability which starts tuning if the SWR is higher than
1.5–3:1.
When “OFF” is selected, the tuner remains OFF even
when the SWR is poor (1.5–3:1). When “ON” is selected, automatic tune starts even when the tuner is
turned OFF.
Tuner (PTT Start)
Tuning of the internal antenna tuner can be started
automatically at the moment the PTT is pushed after
the operating frequency is changed (more than 1%
from last-tuned frequency).
99
SET MODE
12
■ Miscellaneous (others) set mode (continued)
[ANT] Switch
You can set the antenna connector selection to automatic, manual or non-selection (when using 1 antenna only).
Auto
Antenna switch is activated and the
selection is automatically memorized.
(default)
When “Auto” is selected, the antenna switch is activated and the band memory memorizes the selected
antenna. See p. 87 for details.
Manual
Antenna switch is activated.
OFF
Antenna switch is deactivated and
[ANT1] is always selected.
When “Manual” is selected, the antenna switch is activated and selects an antenna manually.
When “OFF” is selected, the antenna switch is not activated and does not function. The [ANT1] connector
is always selected in this case.
RTTY Mark Frequency
This item selects the RTTY mark frequency. RTTY
mark frequency is switched between 1275, 1615 and
2125 Hz.
2125
1275
2125 Hz RTTY mark
frequency (default)
1275 Hz RTTY mark
frequency
170
425
170 Hz RTTY shift
frequency (default)
425 Hz RTTY shift
frequency
RTTY Shift Width
This item adjusts the RTTY shift width. There are 3
selectable values: 170, 200 and 425 Hz.
RTTY Keying Polarity
This item selects the RTTY keying polarity. Normal or
reverse keying polarity can be selected.
Normal
Reverse
Normal polarity (default)
Reverse polarity
When reverse polarity is selected, Mark and Space
are reversed.
- Normal : Key open/close = Mark/Space
- Reverse : Key open/close = Space/Mark
100
12
SET MODE
■ Miscellaneous (others) set mode (continued)
SPEECH Language
When the optional UT-102 VOICE SYNTHESIZER UNIT is
installed, you can select between English and Japanese as the language.
English
Japanese
English announcement
(default)
Japanese announcement
HIGH
LOW
Faster announcement
(default)
Slower announcement
ON
OFF
Signal level announcement
(default)
No signal level
announcement
See p. 104 for unit installation.
SPEECH Speed
When the optional UT-102 VOICE SYNTHESIZER UNIT is
installed, you can select between faster or slower
synthesizer output.
See p. 104 for unit installation.
SPEECH S-Level
When the optional UT-102 VOICE SYNTHESIZER UNIT is
installed, you can have frequency, mode and signal
level announcement. Signal level announcement can
be deactivated if desired.
When “OFF” is selected, the signal level is not announced.
See p. 104 for unit installation.
Memopad Numbers
This item sets the number of memo pad channels
available. 5 or 10 memo pads can be set.
101
10
5 memo pads
(default)
10 memo pads
SET MODE
12
■ Miscellaneous (others) set mode (continued)
MAIN DIAL Auto TS
This item sets the auto tuning step function. When rotating the tuning dial rapidly, the tuning step automatically changes several times as selected.
There are 2 type of auto tuning steps: HIGH (Fastest)
and LOW (Faster).
HIGH
Auto tuning step is turned ON.
Fastest tuning step during rapid rotation
(default)
LOW
Auto tuning step is turned ON.
Faster tuning step during rapid rotation
OFF
Auto tuning step is turned OFF.
MIC Up/Down Speed
This item sets the rate at which frequencies are
scanned when the microphone [UP]/[DN] switches
are pushed and held. High or low can be selected.
HIGH
LOW
High speed (default,
50 tuning steps/sec.)
Low speed
(25 tuning steps/sec.)
ON
OFF
Quick RIT/∂TX Clear
This item selects the RIT/∂TX frequency clearing instruction with the [CLEAR] switch.
Clears the RIT/∂TX fre- Clears the RIT/∂TX frequency when [CLEAR] is quency when [CLEAR] is
pushed momentarily.
pushed for 1 sec.
(default)
SSB/CW Synchronous Tuning
This item selects the displayed frequency shift function from ON and OFF.
When this function is activated, the receiving signal
can be kept to receive even when the operating mode
is changed between SSB and CW.
ON
OFF
The displayed frequency The displayed frequency
shifts when the operating does not shift.
mode is changed between (default)
SSB and CW.
The frequency shifting value may differ according
to the CW pitch setting.
CW Normal Side
Selects the carrier point of CW mode from LSB and
USB.
LSB
USB
The carrier point is set to The carrier point is set to
LSB side.
USB side.
(default)
102
12
SSET MODE
■ Miscellaneous (others) set mode (continued)
External Keypad
This item sets the external keypad capability and
function.
For your information
The following diagram shows the equivalent circuit of
an external keypad and connects to the pin 3 and
pin 7of the [MIC] connector (p. 18).
4.7kΩ
±5%
S4
(T4/M4)
2.2kΩ
±5%
S3
(T3/M3)
1.5kΩ
±5%
1.5kΩ
±5%
S2
(T2/M2)
S1
(T1/M1)
Auto
Pushing one of external keypad
switches, transmits the desired voice
memory during a phone mode (SSB,
AM or FM), or memory keyer contents
during CW mode operation.
VOICE PLAY(TX)
Pushing one of external keypad
switches, transmits the desired voice
memory contents during a phone
mode operation.
To [MIC] connector pin e
KEYER SEND
Pushing one of external keypad
switches, transmits the desired keyer
memory contents during CW mode
operation.
OFF
External keypad does not function.
(default)
To [MIC] connector pin u
USER EXTERNAL KEYPAD
CI-V Baud Rate
This item sets the data transfer rate. 300, 1200, 4800,
9600, 19200 bps and “Auto” are available.
When “Auto” is selected, the baud rate is automatically set according to the connected controller or remote controller.
Auto
19200
Auto baud rate
(default)
19200 bps
CI-V Address
To distinguish equipment, each CI-V transceiver has
its own Icom standard address in hexadecimal code.
The IC-756PROIII’s address is 6Eh.
6Eh
7Fh
Address of 6Eh
(default)
Address of 7Fh
ON
OFF
Transceive ON
(default)
Transceive OFF
ON
OFF
4 bytes of frequency data
5 bytes of frequency data
(default)
When 2 or more IC-756PROIII’s are connected to an
optional CT-17 CI-V LEVEL CONVERTER, rotate the tuning dial to select a different address for each IC756PROIII in the range 01h to 7Fh.
CI-V Transceive
Transceive operation is possible with the IC-756PROIII
connected to other Icom HF transceivers or receivers.
When “ON” is selected, changing the frequency, operating mode, etc. on the IC-756PROIII automatically
changes those of connected transceivers (or receivers) and vice versa.
CI-V with IC-731
When connecting the IC-756PROIII to the IC-735 for
transceive operation, you must change the operating
frequency data length to 4 bytes.
• This item must be set to “ON” only when operating the
transceiver with the IC-735.
103
OPTION INSTALLATION
13
■ Opening the transceiver’s case
Follow the case and cover opening procedures shown
here when you want to install an optional unit or adjust
the internal units, etc.
CAUTION: DISCONNECT the DC power cable
from the transceiver before performing any work on
the transceiver. Otherwise, there is danger of electric shock and/or equipment damage.
q Remove 2 screws from the left side of the transceiver to remove the carrying handle as shown
below.
w Remove 7 screws from the top of the transceiver
and 4 screws from the sides, then lift up the top
cover.
e Turn the transceiver upside down.
r Remove 6 screws from the bottom of the transceiver, then lift up the bottom cover.
■ UT-102 VOICE SYNTHESIZER UNIT
q Remove the top and bottom covers as shown
above.
w Remove the protective paper attached to the bottom of the UT-102 to expose the adhesive strip.
e Plug UT-102 into J3502 on the MAIN unit as
shown in the diagram at right.
r Adjust the trimmer SPCH to set the speech level if
desired. Refer to inside views on p. 108.
t Return the top and bottom covers to their original
positions.
MAIN unit
-10
UT
The UT-102 announces the accessed readout’s frequency, mode, etc. (S-meter level can also be announced—p. 101) in a clear, electronically-generated
voice, in English (or Japanese).
➥ Push [LOCK/SPEECH] for 1 sec. to announce the
frequency, etc.
UT-102
J3502
104
14
MAINTENANCE
■ Troubleshooting
The following chart is designed to help you correct
problems which are not equipment malfunctions.
POWER
PROBLEM
If you are unable to locate the cause of a problem or
solve it through the use of this chart, contact your nearest Icom Dealer or Service Center.
POSSIBLE CAUSE
RECEIVE
REF.
Power does not come on • Power cable is improperly connected.
when the [POWER] switch • Fuse is blown.
is pushed.
• Re-connect the DC power cable correctly.
p. 16
• Check for the cause, then replace the fuse with p. 106
the spare one.
(Fuses are installed in the DC power cable and
the internal PA unit.)
No sounds come out from • Volume level is too low.
the speaker.
• The squelch is closed.
• Rotate [AF] clockwise to obtain a suitable lis- p. 1
tening level.
• Turn [RF/SQL] to 10 o’clock position to open the p. 2
squelch.
• Push [TRANSMIT] to receive or check the p. 1
SEND line of an external unit, if desired.
• The transceiver is in transmitting condition.
Sensitivity is too low, and • The antenna is not connected properly.
only strong signals are au- • The antenna for another band is selected.
dible.
• The antenna is not properly tuned.
• The attenuator is activated.
• Re-connect to the antenna connector.
—
• Select an antenna suitable for the operating fre- pgs. 3,
quency.
87
• Push [TUNER] for 1 sec. to manually tune the p. 88
antenna.
• Push [ATT] several times to select “ATT OFF.” p. 3
Received audio is unclear • Wrong operating mode is selected.
• Select a suitable operating mode.
or distorted.
• PBT function is activated.
• Push [PBT CLR] for 1 sec. to reset the function.
• Noise blanker is turned ON when receiving a • Push [NB] to turn the noise blanker OFF.
strong signal.
• Preamp is activated.
• Push [P.AMP] once or twice to turn the function
OFF.
• The noise reduction is activated and the [NR] • Set the [NR] control for maximum readability.
control is too far clockwise.
The [ANT] switch does not • The antenna switch has not been activated.
function
TRANSMIT
SOLUTION
p. 29
p. 60
p. 62
p. 3
p. 64
• Set the antenna switch in set mode to “Auto” or p. 87
“Manual.”
Transmitting is impossible. • The operating frequency is not set to a ham • Set the frequency to a ham band.
band.
p. 25
Output power is too low.
p. 2
p. 1
p. 3
• [RF POWER] is set too far counterclockwise
• [MIC GAIN] is set too far counterclockwise
• The antenna for another band is selected.
• The antenna is not properly tuned.
• Rotate [RF POWER] clockwise.
• Set [MIC GAIN] to a suitable position.
• Select an antenna suitable for the operating frequency.
• Push [TUNER] for 1 sec. to manually tune the
antenna.
p. 88
No contact possible with • RIT or ∂TX function is activated.
• Push [RIT] or [∂TX] to turn the function OFF.
p. 6
another station.
• Split frequency function and/or dualwatch are • Push [SPLIT] and/or [DUALWATCH] to turn the pgs. 8,
activated.
function OFF.
63, 70
Transmit signal is unclear • [MIC GAIN] is set too far clockwise
or distorted.
• Set [MIC GAIN] to a suitable position.
Repeater cannot be ac- • Split frequency function is not activated.
• Push [SPLIT] to to turn the function ON
cessed.
• Programmed subaudible tone frequency is • Reset the frequency using set mode.
wrong.
p. 1
p. 8
p. 52
SCAN
Programmed scan does • Squelch is open.
• Set [RF/SQL] to the threshold point.
p. 2
not stop.
• [RF/SQL] is assigned to RF gain control and • Reset [RF/SQL] control assignment and set it to pgs. 2,
squelch is open.
the threshold point.
30, 98
Programmed scan does • The same frequencies have been programmed • Program different frequencies in scan edge p. 78
not start.
in scan edge memory channels P1 and P2.
memory channel P1 and P2.
Memory scan does not • 2 or more memory channels have not been • Program more than 2 memory channels.
start
programmed.
p. 78
Select memory scan does • 2 or more memory channels have not been • Designate more than 2 memory channels as se- pgs. 77,
not start
designated as select channels.
lect channels for the scan.
85
105
MAINTENANCE
DISPLAY
PROBLEM
POSSIBLE CAUSE
SOLUTION
The displayed frequency • The dial lock function is activated.
does not change properly. • A set mode screen is selected.
REF.
• Push [LOCK/SPEECH] to turn the function OFF. p. 64
• Push [EXIT/SET] several times to exit the set pgs. 10,
mode screen.
92
• Reset the CPU.
p. 21
• The internal CPU has malfunctioned.
■ Fuse replacement
14
DC POWER CABLE FUSE REPLACEMENT
If a fuse blows or the transceiver stops functioning, try
to find the source of the problem, and replace the damaged fuse with a new, rated fuse.
30 A
fuse
CAUTION: DISCONNECT the DC power cable
from the transceiver when changing a fuse.
The IC-756PROIII has 2 types of fuses installed for
transceiver protection.
• DC power cable fuses ................................ FGB 30 A
• Circuitry fuse ................................................ FGB 5 A
CIRCUITRY FUSE REPLACEMENT
The 13.8 V DC from the DC power cable is applied to
all units in the IC-756PROIII, except for the power
amplifier, through the circuitry fuse. This fuse is installed in the PA unit.
e Replace the circuitry fuse as shown in the diagram
below.
r Replace the PA shielding plate and top cover.
Circuitry fuse (FGB 5 A)
q Remove the top cover as shown on p. 104.
w Remove 11 screws from the PA shielding plate,
then remove the plate.
■ Clock backup battery replacement
The transceiver has a lithium backup battery
(CR2032) inside for clock and timer functions. The
usual life of the backup battery is approximately 2
years.
CR2032
When the backup battery is exhausted, the transceiver transmits and receives normally but cannot retain the current time.
See p. 108 for battery location.
106
14
MAINTENANCE
■ Tuning dial brake adjustment
The tension of the tuning dial may be adjusted to suit
your preference.
The brake adjustment screw is located on the right
side of the tuning dial. See the figure at right.
Turn the brake adjustment screw clockwise or counterclockwise to obtain a comfortable tension level
while turning the dial continuously and evenly in one
direction.
Light
Heavy
■ Frequency calibration (approximate)
A very accurate frequency counter is required to calibrate the frequency of the transceiver. However, a
rough check may be performed by receiving radio
station WWV, or other standard frequency signals.
CAUTION: Your transceiver has been thoroughly adjusted and checked at the factory before
being shipped. You should not calibrate frequencies, except for special reasons.
q Push [SSB] to select USB mode.
w Push [PBT CLR] for 1 sec. to clear the PBT settings and make sure that the RIT/∂TX function is
not activated.
e Set the frequency to the standard frequency station minus 1 kHz.
• When receiving WWV (10.000.00 MHz) as a standard
frequency, set the operating frequency for
9.999.00 MHz.
• Other standard frequencies can also be used.
ANT
BW 2.4k SFT
TX
TX
VFO
AGC
MID
BK-IN
OFF
1/4
OFF
é
OTHERS SET
Calibration Marker
Beep(Confirmation)
Beep(Band Edge)
RF/SQL Control
Quick Dualwatch
Quick SPRIT
FM SPLIT Offset(HF)
è
DEF
ON
ON
ON
RF+SQL
ON
ON
-0.100MHz
WIDE
o Adjust the calibration pot on the right side panel of
the transceiver for a zero beat with the received
standard signal as shown below.
• Zero beat means that two signals are exactly the same
frequency, resulting in a single tone being emitted.
FIL2
o.ooo.pp
METER
Po
14.100.00
USB
r Push [EXIT/SET] several times to close a multifunction screen, if necessary.
t Push [EXIT/SET] for 1 sec. to select the set mode
screen.
y Push [(F-5)OTHERS] to enter miscellaneous (others) set mode.
107
• Side tone may be heard.
qw:pp
USB
u Push [(F-1)Y] several times to select the “Calibration marker” item.
i Rotate the tuning dial clockwise to turn the calibration marker ON.
!0 Rotate the tuning dial counterclockwise to turn the
calibration marker OFF.
!1 Push [EXIT/SET] twice to exit set mode.
INTERNAL VIEWS
15
• Top view
PA unit
PA fuse (FGB 5 A)
Internal antenna
tuner
FILTER unit
• Bottom view
RF unit
BPF unit
Clock backup battery
PRE AMP unit
PLL unit
SPCH
Optional voice
synthesizer level adj.
Space for optional
voice synthesizer
(UT-102)
DSP unit
MAIN unit
108
16
CONTROL COMMAND
■ Remote jack (CI-V) information
• CI-V connection example
The transceiver can be connected through an optional
CT-17 CI-V LEVEL CONVERTER to a personal computer
equipped with an RS-232C port. The Icom Communications Interface-V (CI-V) controls the following functions of the transceiver.
IC-756PROIII
9–15 V
DC
Up to 4 Icom CI-V transceivers or transceivers can be
connected to a personal computer equipped with an
RS-232C port. See p. 103 for setting the CI-V condition using set mode.
personal
computer
ct- 17
• Data format
mini-plug cable
The CI-V system can be operated using the following
data formats. Data formats differ according to command numbers. A data area or sub command is added
for some commands.
Controller to IC-756PROIII
OK message to controller
6E
E0
6E
Cn
Sc
Data area
FD
FE FE
E0
6E
(see the command table)
FE FE
FB
FA
FD
End of message
code (fixed)
E0
(fixed)
FE FE
(fixed)
FD
NG code OK code
Data area
Transceiver’s
default address
Sc
Controller’s
default address
Cn
Preamble
code (fixed)
E0
End of message
code (fixed)
6E
BCD code data for
frequency or memory
number entry
FE FE
Sub command number
(see command table)
Command number
Controller’s
default address
Transceiver’s
default address
Preamble
code (fixed)
FD
IC-756PROIII to controller
NG message to controller
• Command table
Command
00
01
Same as
command 06
02
—
Command
07
Send mode data
Read band edge frequencies
03
—
Read operating frequency
04
—
Read operating mode
05
—
Set frequency data
06
00
01
02
03
04
05
07
08
Select LSB
Select USB
Select AM
Select CW
Select RTTY
Select FM
Select CW-R
Select RTTY-R
—
B0
B1
C0
Select VFO mode
Exchange main and sub readouts
Equalize main and sub readouts
Turn the dualwatch OFF
07
109
Sub command
Description
—
Send frequency data
08
Sub command
Description
C1
Turn the dualwatch ON
D0
Select main readout
D1
Select sub readout
—
0001–0101*
09
—
Select memory mode
Select memory channel
*1P1=0100, P2=0101
Memory write
0A
—
Memory to VFO
0B
—
Memory clear
0E
00
01
02
03
12
13
22
23
Scan stop
Programmed/memory scan start
Programmed scan start
∂F scan start
Fine programmed scan start
Fine ∂F scan start
Memory scan start
Select memory scan start
CONTROL COMMAND
16
• Command table (continued)
Command
0E
Sub command
Description
A1–A7
Set ∂F scan span (A1=±5 kHz,
A2=±10 kHz, A3=±20 kHz,
A4=±50 kHz, A5=±100 kHz,
A6=±500 kHz, A7=±1 MHz)
B0
Set as non-select channel
B1
Set as select channel
D0
Set scan resume OFF
D3
Set scan resume ON
0F
00
01
Turn the split function OFF
Turn the split function ON
10
00
01
02
03
04
05
06
07
08
Select 10 Hz (1 Hz) tuning step
Select 100 Hz tuning step
Select 1 kHz tuning step
Select 5 kHz tuning step
Select 9 kHz tuning step
Select 10 kHz tuning step
Select 12.5 kHz tuning step
Select 20 kHz tuning step
Select 25 kHz tuning step
11
00
06
12
18
Attenuator OFF
Attenuator ON (6 dB)
Attenuator ON (12 dB)
Attenuator ON (18 dB)
12
00
01
Select/read antenna selection
(00=ANT1, 01=ANT2 : Add 0 or 1
to turn [RX ANT] OFF or ON, respectively.)
13
00
01
02
Announce with voice synthesizer
(00=all data; 01=frequency and
S-meter level; 02=receive mode)
14
01 + Level data [AF] level setting (0=max. CCW to
255=max. CW)
02 + Level data [RF] level setting (0=max. CCW to
255=11 o’clock)
03 + Level data [SQL] level setting (0=11 o’clock to
255=max. CW)
06 + Level data [NR] level setting (0=min. to
255=max.)
07 + Level data Inside [TWIN PBT] setting or IF
shift setting (0=max. CCW,
128=center, 255=max. CW)
08 + Level data Outside [TWIN PBT] setting
(0=max. CCW, 128=center,
255=max. CW)
09 + Level data [CW PITCH] setting (0=low pitch to
255=high pitch)
0A + Level data [RF POWER] setting (0=mini. to
255=max.)
0B + Level data [MIC GAIN] setting (0=mini. to
255=max.)
0C + Level data [KEY SPEED] setting (0=slow to
255=fast)
0D + Level data [NOTCH] setting (0=low freq. to
255=high freq.)
0E + Level data [COMP] setting (0=mini. to
255=max.)
0F + Level data [BK-IN DELAY] setting (0=short
delay to 255=long delay)
10 + Level data [BAL] level setting (0=max. CCW,
128=center, 255=max. CW)
12 + Level data [NB] level setting (0=mini. to
255=max.)
15 + Level data Monitor gain setting (0=0% to
255=100%)
Command
14
Sub command
Description
16 + Level data VOX gain setting (0=0%
255=100%)
17 + Level data Anti-VOX gain setting (0=0%
255=100%)
18 + Level data LCD contrast setting (0=0%
255=100%)
19 + Level data LCD bright setting (0=0%
255=100%)
to
to
to
to
15
01
02
11
12
13
14
Read squelch condition
Read S-meter level
Read Po meter level
Read SWR meter level
Read ALC meter level
Read COMP meter level
16
02
Preamp (0=OFF; 1=preamp 1;
2=preamp 2)
AGC selection (1=Fast; 2=Mid;
3=Slow)
Noise blanker (0=OFF; 1=ON)
Noise reduction (0=OFF; 1=ON)
Auto notch (0=OFF; 1=ON)
Repeater tone (0=OFF; 1=ON)
Tone squelch (0=OFF; 1=ON)
Speech compressor (0=OFF; 1=ON)
Monitor (0=OFF; 1=ON)
VOX function (0=OFF; 1=ON)
Break-in (0=OFF; 1=semi breakin; 2=full break-in)
Manual notch (0=OFF; 1=ON)
RTTY filter (0=OFF; 1=ON)
Twin peak filter (0=OFF; 1=ON)
Dial lock (0=OFF; 1=ON)
12
22
40
41
42
43
44
45
46
47
48
49
4F
50
19
00
Read the transceiver ID
1A
00
Send/read memory contents (see
p. 112 for details)
Send/read band stacking register
contents (see p. 112 for details)
Send/read memory keyer contents (see p. 112 for details)
Send/read the selected filter width
(0=50 Hz to 40/31=3600/2700 Hz)
Send/read the selected AGC time
constant (0=OFF, 1=0.1/0.3 sec. to
13=6.0/8.0 sec.)
Send/read SSB TX Tone (Bass)
level (0 =min. to 10=max.)
Send/read SSB TX Tone (Treble)
level (0=min. to 10=max.)
Send/read MONITOR gain (0=min.
to 255=max.)
Send/read CW side tone gain
(0=min. to 255=max.)
Send/read CW side tone gain limit
(0=OFF, 1=ON)
Send/read beep gain (0=min. to
255=max.)
Send/read beep gain limit (0=OFF,
1=ON)
Send/read LCD contrast (0=0% to
255=100%)
Send/read LCD backlight (0=0% to
255=100%)
01
02
03
04
0501
0502
0503
0504
0505
0506
0507
0508
0509
110
16
CONTROL COMMAND
• Command table (continued)
Command
1A
Sub command
Description
0510
Send/read LCD horizontal position
(0=1 to 7=8)
0511
Send/read switch backlight (0=1 to
7=8)
0512
Send/read display type (0=A, 1=B,
2=C, 3=D, 4=E, 5=F, 6=G, 7=H)
0513
Send/read display font (0=Basic1,
1=Basic2, 2=Pop, 3=7seg,
4=Italic1, 5=italic2, 6=Classic)
0514
Send/read memory name (0=OFF,
1=ON)
0515
Send/read my call setting (10-character: see p. 112)
0516
Send/read current time (0000 to
2359)
0517
Send/read power-ON timer set
(0000 to 2359)
0518
0519
0520
0521
0522
0523
0524
0525
0526
0527
0528
0529
0530
0531
0532
0533
0534
0535
0536
0537
0538
111
Send/read power-OFF period
(5=5 min. to 120=120 min. in
5 min. step)
Send/read calibration marker
(0=OFF, 1=ON)
Send/read confirmation beep
(0=OFF, 1=ON)
Send/read band edge beep
(0=OFF, 1=ON)
Send/read RF/SQL control set
(0=Auto, 1=SQL, 2=RF+SQL)
Send/read quick dualwatch set
(0=OFF, 1=ON)
Send/read quick split set (0=OFF,
1=ON)
Send/read FM split offset (HF)
–4.000 to +4.000 MHz
(see p. 112 for details)
Send/read FM split offset (50 MHz)
–4.000 to +4.000 MHz
(see p. 112 for details)
Send/read split lock set (0=OFF,
1=ON)
Send/read tuner auto start set
(0=OFF, 1=ON)
Send/read PTT tune set (0=OFF,
1=ON)
Send/read antenna selection
(0=OFF, 1=Manual, 2=Auto)
Send/read RTTY mark frequency
(0=1275 Hz, 1=1615 Hz,
2=2125 Hz)
Send/read RTTY shift width
(0=170 Hz, 1=200 Hz, 2=425 Hz)
Send/read RTTY keying polarity
(0=Normal, 1=Reverse)
Send/read RTTY decode USOS
(0=OFF, 1=ON)
Send/read RTTY decode new line
code (0=CR,LF,CR+LF,
1=CR+LF)
Send/read speech language
(0=English, 1=Japanese)
Send/read speech speed (0=slow,
1=fast)
Send/read S-level speech (0=OFF,
1=ON)
Command
1A
Sub command
Description
0539
Send/read memo pad numbers
(0=5 ch, 1=10 ch)
0540
Send/read main dial auto TS
(0=OFF, 1=Low, 2=High)
0541
Send/read mic. up/down speed
(0=Low, 1=High)
0542
Send/read CI-V transceive set
(0=OFF, 1=ON)
0543
Send/read CI-V 731 mode set
(0=OFF, 1=ON)
0544
Send/read TX spectrum scope set
(0=OFF, 1=ON)
0545
Send/read spectrum scope max.
hold set (0=OFF, 1=ON)
0546
Send/read voice auto monitor set
(0=OFF, 1=ON)
0547
0548
0549
0550
0551
0552
0553
0554
0555
0556
0557
0558
0559
0560
0561
0562
0563
0564
0565
0566
0567
Send/read cut number style
(0=Normal, 1=190→ANO,
2=190→ANT, 3=90→NO,
4=90→NT)
Send/read count up trigger channel (1=M1, 2=M2, 3=M3, 4=M4)
Send/read present number
(1–9999)
Send/read CW keyer repeat time
(1=1 sec. to 60=60 sec.)
Send/read CW keyer dot/dash
ratio (28=1:1:2.8 to 45=1:1:4.5)
Send/read rise time (0=2 msec.,
1=4 msec., 2=6 msec., 3=8 msec.)
Send/read paddle polarity
(0=Normal, 1=Reverse)
Send/read keyer type (0=Straight,
1=Bug-key, 2=ELEC-Key)
Send/read mic. up/down keyer set
(0=OFF, 1=ON)
Send/read scan speed (0=low,
1=high)
Send/read scan resume (0=OFF,
1=ON)
Send/read VOX gain (0=0% to
255=100%)
Send/read anti VOX gain (0=0% to
255=100%)
Send/read VOX delay (0=0.0 sec.
to 20=2.0 sec.)
Send/read RTTY filter bandwidth
(0=250 Hz, 1=300 Hz, 2=350 Hz,
3=500 Hz, 4=1 kHz)
Send/read twin peak filter (0=OFF,
1=ON)
Send/read timer functions (0=OFF,
1=ON)
Send/read DSP filter type
(0=SSB: sharp; CW: sharp,
1=SSB: sharp; CW: soft,
2=SSB: soft CW: sharp,
3=SSB: soft CW: soft)
Send/read quick RIT/∂TX clear
function (0=OFF, 1=ON)
Send/read SSB/CW synchronous
tuning function (0=OFF, 1=ON)
Send/read CW normal side set
(0=LSB, 1=USB)
CONTROL COMMAND
00
Set the transceiver to receive or
transmit condition (0=Rx; 1=Tx)
Send/read tuner function (0=OFF,
1=ON, 2=Manual tune)
01
• To send/read memory contents
When sending or reading memory contents, additional code
as follows must be added to appoint the memory channel.
➥ Additional code: 0000–0101 (0100=P1, 0101=P2)
• Band stacking register
To send or read the desired band stacking register’s contents, combined code of the frequency band and register
codes as follows are used.
For example, when sending/reading the oldest contents in
the 21 MHz band, the code “0703” is used.
• Frequency band code
Code
01
02
03
04
05
06
07
08
09
10
11
Frequency band Frequency range (unit: MHz)
1.8
1.800000– 1.999999
3.5
3.400000– 4.099999
6.900000– 7.499999
10
9.900000–10.499999
14
13.900000–14.499999
18
17.900000–18.499999
21
20.900000–21.499999
24
24.400000–25.099999
28
28.000000–29.999999
50
50.000000–54.000000
GENE
Other than above
Channel number
M1
M2
M3
M4
• Character’s code
Character ASCII code
0–9
30–39
A–Z
41–5A
a–z
61–7A
space
20
2F
3F
2C
2E
5E
✱
2A
Description
Numerals
Alphabetical characters
Alphabetical characters
Word space
Symbol
Symbol
Symbol
Symbol
e.g., to send BT, enter ^4254
Inserts contact number (can be
used for 1 channel only)
• Character’s code for my call
Character ASCII code
0–9
30–39
A–Z
41–5A
a–z
61–7A
space
20
–
2D
2E
2F
Description
Numerals
Alphabetical characters
Alphabetical characters
Word space
Symbol
Symbol
Symbol
• FM split frequency (HF/50 MHz) setting
The following data sequence is used when sending/reading
the FM split frequency setting.
XX
Direction:
00=+ direction
01=– direction
1C
• Channel code
Code
01
02
03
04
1 MHz digit: 0–4
Set repeater tone frequency
Set tone squelch tone frequency
To send or read the desired memory keyer contents, the
channel and character codes as follows are used.
10 MHz digit: 0 (fixed)
00
01
• Channel code for memory keyer
10 kHz digit: 0–9
1B
Registered number
1 (latest)
3 (oldest)
100 kHz digit: 0–9
Sub command
Description
0568
Send/read external keypad type
(0=OFF, 1=Keyer send, 2=Voice
play (Tx), 3=Auto)
0569
Send/read NB level (0=0% to
255=100%)
0570
Send/read SSB transmit bandwidth-WIDE (Low: 100 Hz, High:
2900 Hz)
0571
Send/read SSB transmit bandwidth-MID (Low: 300 Hz, High:
2700 Hz)
0572
Send/read SSB transmit bandwidth-NAR (Low: 500 Hz, High:
2500 Hz)
0573
Send/read clock2 function
(0=OFF, 1=ON)
0574
Send/read offset time for clock2
(240001=–24:00, 240000=+24:00)
0575
Send/read screen saver setting
(0=OFF, 1=15 min, 2=30 min,
3=60 min)
0576
Send/read RTTY TX USOS
(0=OFF, 1=ON)
06
Send/read DATA mode (0=OFF,
1=ON)
07
Send/read SSB transmit bandwidth (0=Wide, 1=Middle, 2=Narrow)
• Register code
Code
01
02
03
100 Hz digit: 0 (fixed)
Command
(continued)
1 kHz digit: 0–9
• Command table
16
112
17
SPECIFICATIONS
• General
• Frequency coverage
Rx
Tx
• Receiver
• Receive system
0.030–60.000 MHz*1*2
1.800– 1.999 MHz*2
3.500– 3.999 MHz*2
7.000– 7.300 MHz*2
10.100–10.150 MHz*2
14.000–14.350 MHz*2
18.068–18.168 MHz*2
21.000–21.450 MHz*2
24.890–24.990 MHz*2
28.000–29.700 MHz*2
50.000–54.000 MHz*2
*1Some frequency bands are not guaranteed.
*2Depending on version.
• Mode
: USB, LSB, CW, RTTY, AM, FM
• No. of memory channels : 101 (99 regular, 2 scan edges)
• Antenna connector
: SO-239 × 2 and phono
(RCA; 50 Ω)
• Temperature range
• Frequency stability
: –10˚C to +50˚C
; +14˚F to +122˚F
: Less than ±0.5 ppm 1 min. after
power ON. (–10 to +50˚C; +14 to
: Triple conversion
superheterodyne system
• Intermediate frequencies :
1st
64.455 MHz
2nd
455 kHz
3rd
36 kHz
• Sensitivity (typical)
SSB, CW, RTTY
0.16 µV (1.80–29.99 MHz)*1
(10 dB S/N)
0.13 µV (50.0–54.0 MHz)*2
AM (10 dB S/N)
13 µV (0.5–1.799 MHz)
2 µV (1.80–29.99 MHz)*1
1 µV (50.0–54.0 MHz)
FM (12 dB SINAD)
0.5 µV (28.0–29.99 MHz)*1
0.32 µV (50.0–54.0 MHz)*2
*1Pre-amp 1 is ON, *2Pre-amp 2 is ON
• Squelch sensitivity (Pre-amp: OFF):
SSB, CW, RTTY
FM
• Selectivity
SSB, RTTY
(BW: 2.4 kHz)
CW (BW: 500 Hz)
+122˚F)
• Frequency resolution
• Power supply
: 1 Hz
: 13.8 V DC ±15%
AM (BW: 6 kHz)
(negative ground)
FM (BW: 15 kHz)
• Power consumption
Transmit
Max. power
Receive
Standby
Max. audio
• Dimensions
(projections not included)
• Weight (approx.)
• ACC 1 connector
• ACC 2 connector
• CI-V connector
• Display
23 A
3.0 A (typ.)
3.5 A (typ.)
340(W) × 111(H) × 285(D) mm
133⁄8(W) × 43⁄8(H) × 117⁄32(D) in
9.6 kg; 21 lb 3 oz
8-pin DIN connector
7-pin DIN connector
2-conductor 3.5 (d) mm (1⁄8″)
5-inch (diagonal) TFT color LCD
• Spurious and image
rejection ratio
• AF output power
(at 13.8 V DC)
• RIT variable range
• PHONES connector
• External SP connector
Less than 5.6 µV
Less than 1 µV
More than 2.4 kHz/–6 dB
Less than 3.6 kHz/–60 dB
More than 500 Hz/–6 dB
Less than 700 Hz/–60 dB
More than 6.0 kHz/–6 dB
Less than 15.0 kHz/–60 dB
More than 12.0 kHz/–6 dB
Less than 20.0 kHz/–60 dB
: More than 70 dB
(except IF through on 50 MHz band)
: More than 2.0 W at 10%
distortion with an 8 Ω load
: ±9.999 kHz
: 3-conductor 6.35 (d) mm (1⁄4″)
: 2-conductor 3.5 (d) mm
(1⁄8″)/8 Ω
• Antenna tuner
• Matching impedance range:
HF bands
16.7 to 150 Ω unbalanced
• Transmitter
• Output power (continuously adjustable):
SSB/CW/RTTY/FM
Less than 5 to 100 W
AM
Less than 5 to 40 W
• Modulation system
SSB
PSN modulation
AM
Low power modulation
FM
Phase modulation
• Spurious emission
: 50 dB (HF bands)
60 dB (50 MHz band)
• Carrier suppression
: 40 dB
• Unwanted sideband
: 55 dB
suppression
• ∂TX variable range
: ±9.999 kHz
• Microphone connector : 8-pin connector (600 Ω)
• ELEC-KEY connector
: 3-conductor 6.35(d) mm (1⁄4″)
• KEY connector
: 3-conductor 6.35(d) mm (1⁄4″)
• SEND connector
: Phono (RCA)
• ALC connector
: Phono (RCA)
(Less than VSWR 3:1)
50 MHz band
20 to 125 Ω unbalanced
(Less than VSWR 2.5:1)
• Minimum operating input : 8 W
power
• Tuning accuracy
: VSWR 1.5:1 or less
• Insertion loss (after tuning) : Less than 1.0 dB
All stated specifications are typical and subject to change without notice or obligation.
113
OPTIONS
18
IC-PW1 HF/50 MHz ALL BAND 1 kW LINEAR AMPLIFIER
PS-125 DC POWER SUPPLY
Full-duty 1 kW linear amplifier including an automatic antenna tuner. Has
automatic tuning and band selection capability. Full break-in (QSK) operation is possible. The amplifier/power supply unit and the remote control
unit are separated.
Light weight switching regulator
system power supply.
AH-4 HF/50 MHz AUTOMATIC
ANTENNA TUNER
SM-20 DESKTOP MICROPHONE
AH-2b ANTENNA ELEMENT
• Output voltage: 13.8 V DC
• Max. current drain: 25 A
A 2.5 m long antenna element for
mobile operation
with the AH-4.
• Frequency
coverage:
7–54 MHz bands
with the AH-4
Specially designed to tune a long
wire antenna for portable or mobile
HF operation. The PTT tuner start
function provides simple operation.
• Input power rating: 120 W
SP-23 EXTERNAL SPEAKER
CT-17 CI-V LEVEL CONVERTER
Unidirectional, electret microphone
for base station operation. Includes
[UP]/[DOWN] switches and a low
cut function.
HM-36 HAND MICROPHONE
Hand microphone equipped
[UP]/[DOWN] switches.
with
UT-102 VOICE SYNTHESIZER UNIT
Announces the receive frequency, mode
and S-meter level in a clear, electronically-generated voice, in English (or
Japanese).
4 audio filters; headphone jack; can
connect to 2 transceivers.
• Input impedance: 8 Ω
• Max. input power: 5 W
For remote transceiver control
using a personal computer. You
can change frequencies, operating
mode, memory channels, etc.
•About DC power supply
The use of IC-756PROIII (#33, #34, #35, #38, #40) in combination with the DC power supply complies with European
Harmonised Standard regulations under the conditions
listed below.
•About IC-PW1 LINEAR AMPLIFIER
The IC-PW1 LINEAR AMPLIFIER does not comply with European Harmonised Standard regulations. Please do not use
this equipment within European countries.
Conditions
•In combination with PS-125
114
IC-756PROIII
#40 (Spain)
A-6378H-1EX
Printed in Japan
© 2004 Icom Inc.
1-1-32 Kamiminami, Hirano-ku, Osaka 547-0003 Japan

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