icom ic 718 instruction manual

8/8/2019 Icom IC 718 Instruction Manual

1/62

INSTRUCTION MANUAL

HF ALL BAND TRANSCEIVER

i718

This device complies with Part 15 of the FCC rules. Operation is sub-ject to the following two conditions: (1) This device may not cause

harmful interference, and (2) this device must accept any interference

received, including interference that may cause undesired operation.


2/62

i

IMPORTANT

READ THIS INSTRUCTION MANUAL

CAREFULLYbefore attempting to operate the

transceiver.

SAVE THIS INSTRUCTION MANUAL. Thismanual contains important safety and operating in-

structions for the IC-718.

EXPLICIT DEFINITIONS

PRECAUTIONS

Versions of the IC-718 which display the CE symbol

on the serial number seal comply with the European

harmonised standard ETS300 684 JAN. 1997 (EMCproduct standard for Commercially Available Amateur

Radio Equipment).

WORD

RWARNING

CAUTION

NOTE

DEFINITION

Personal injury, fire hazard or electricshock may occur.

Inconvenience only.No risk of personal injury, fire or

electric shock.

Equipment damage may occur.

RWARNING HIGH VOLTAGE! NEVER attachan antenna or internal antenna connector during trans-

mission. This may result in an electric shock or burn.

RNEVER apply AC to the [DC13.8V] jack on thetransceiver rear panel. This could cause a fire or ruinthe transceiver.

RNEVER apply more than 16 V DC, such as a 24 Vbattery, to the [DC13.8V] jack on the transceiver rear

panel.This could cause a fire or ruin the transceiver.

RNEVER let metal, wire or other objects touch anyinternal part or connectors on the rear panel of the

transceiver.This may result in an electric shock.

NEVER expose the transceiver to rain, snow or anyliquids.

AVOID using or placing the transceiver in areas withtemperatures below10C (+14F) or above +60C

(+140F). Be aware that temperatures on a vehiclesdashboard can exceed 80C (+176F), resulting in per-

manent damage to the transceiver if left there for ex-tended periods.

AVOID placing the transceiver in excessively dusty en-

vironments or in direct sunlight.

AVOID placing the transceiver against walls or putting

anything on top of the transceiver. This will obstructheat dissipation.

During mobile operation, DO NOT operate the trans-ceiver without running the vehicles engine. When

transceiver power is ON and your vehicles engine isOFF, the vehicles battery will soon become exhausted.

Make sure the transceiver power is OFF before start-ing the vehicle. This will avoid possible damage to the

transceiver by ignition voltage spikes.

During maritime mobile operation, keep the transceiverand microphone as far away as possible from the mag-

netic navigation compass to prevent erroneous indica-tions.

BE CAREFUL! The heatsink will become hot when op-

erating the transceiver continuously for long periods.

BE CAREFUL! If a linear amplifier is connected, set

the transceivers RF output power to less than the lin-ear amplifiers maximum input level, otherwise, the lin-ear amplifier will be damaged.

Use Icom microphones only (supplied or optional).

Other manufacturers microphones have different pinassignments, and connection to the IC-718 may dam-

age the transceiver.


3/62

1

1

TABLE OF CONTENTS

The transceiver comes with the following accessories.

Qty.q DC power cable .................................................... 1

w Hand microphone (HM-36) .................................. 1

e Fuse (FGB 20 A; for DC cable) ............................ 1r Fuse (FGB 4 A; internal use) ............................... 1

SUPPLIED ACCESSORIES qw

e r

IMPORTANT .............................................................. iEXPLICIT DEFINITIONS ........................................... i

PRECAUTIONS ......................................................... i

1 TABLE OF CONTENTS ....................................... 1SUPPLIED ACCESSORIES ..................................... 1

2 PANEL DESCRIPTION ................................... 28

sFront panel ........................................................ 2

sFunction display ................................................. 5

sRear panel ......................................................... 6

sMicrophone (HM-36) ......................................... 8

3 INSTALLATION AND CONNECTIONS ......... 914

sUnpacking .......................................................... 9

sSelecting a location ........................................... 9

sGrounding .......................................................... 9

sAntenna connection ........................................... 9

sRequired connections ...................................... 10

sAdvanced connections .................................... 11

sPower supply connections ............................... 12

sLiner amplifier connections .............................. 13

sExternal antenna tuners .................................. 14

4 FREQUENCY SETTING .............................. 1519

sWhen first applying power ............................... 15

s Initial setting .................................................... 15

sVFO description ............................................... 16

sFrequency setting ............................................ 17

sDial lock function ............................................. 19

5 RECEIVE AND TRANSMIT ......................... 2034

sMode selection ................................................ 20

sSquelch and RF gain ....................................... 20

sFunction for receive ......................................... 21

sDSP function (option) ...................................... 23

sFilter selection ................................................. 24

sFilter setting ..................................................... 25

sFunction for transmit ........................................ 26

sSplit frequency operation ................................. 30

sSWR ................................................................ 30

sFunction for CW ............................................... 31

sFunction for RTTY ........................................... 33

6 MEMORY OPERATION ............................... 35 38

sMemory channels ............................................ 35

sMemory channel selection ............................... 35

sMemory channel programming ........................ 36

sFrequency transferring .................................... 37

sMemory clearing .............................................. 38

7 SCANS ........................................................ 3940

sScan types ....................................................... 39

sPreparation ...................................................... 39

sProgrammed scan operation ........................... 40

sMemory scan operation ................................... 40

8 SET MODE .................................................. 41 47

sGeneral ............................................................ 41

sQuick set mode items ................................. 42-43

s Initial set mode items ................................. 44-47

9 INSTALLATION AND CONNECTIONS ....... 4851

sOpening the transceivers case ....................... 48

sOptional bracket and carrying handle............... 48

sCR-338 HIGH STABILITY CRYSTAL UNIT .......... 49

sUT-102 VOICE SYNTHESIZER UNIT .................. 49

sUT-106 DSP RECEIVE UNIT .............................. 50

sOptional IF filters ............................................. 50

sAT-180 internal switch description ................... 51

10 MAINTENANCE ........................................ 5253

sTroubleshooting ............................................... 52

sFuse replacement ............................................ 53

sResetting the CPU ........................................... 53

11 SPECIFICATIONS ........................................... 54

12 OPTIONS .................................................. 5556

13 CONTROL COMMAND ............................ 5758

sRemote jack (CI-V) information ....................... 57

14 INTERNAL VIEWS ........................................... 59

sTop view ........................................................... 59

sBottom view ..................................................... 59


4/62

s Front panel

q POWER SWITCH [PWR]

Push momentarily to turn power ON.Turn the optional DC power supply ON in advance.

Push for 1 sec. to turn power OFF.

While pushing and holding [SET], push [PWR] to

enter the initial set mode. (p. 41)

w MICROPHONE CONNECTOR [MIC]Accepts supplied or optional microphone.See p. 55 for appropriate microphones.

See p. 8 for microphone connector information.

e HEADPHONE JACK [PHONES] (p. 11)

Accepts headphones (8).When headphones are connected, the internal speaker

or connected external speaker does not function.

r AF CONTROL [AF] (inner control)

Varies the audio output level from the speaker.

t RF GAIN/SQUELCH CONTROL [RF/SQL](outer control; pgs. 20, 44)

Adjusts the squelch threshold level.The squelch re-moves noise output from the speaker (closed con-

dition) when no signal is received.The squelch is available for all modes.

The control can be set as the squelch plus RF gain con-

trols or squelch control only (RF gain is fixed at maxi-

mum) in initial set mode.

y RIT CONTROLS [RIT] (Inner control; p. 21)

Shifts the receive frequency without changing thetransmit frequency.

Rotate the control clockwise to incerase the frequency,

or rotate the control counterclockwise to decrease the

frequency. appears on the display.

The shift frequency range is 1.2 kHz.

u IF SHIFT CONTROLS [SHIFT] (Outer control; p.

21)

Shifts the center frequency of the receiverss IFpass-band.Rotate the control colckwise to shift the center frequency

higher, or rotate the control counterclockwise to shift the

center frequency lower.

i LOCK SWITCH [LOCK] (p. 19)Push momentarily to turn the dial lock function ON

and OFF. The dial lock function electronically locks the main dial.

When the optional UT-102 VOICE SYNTHESIZER UNIT is

installed (p. 49), push for 1 sec. to have the frequency,

etc. announced.

UT-102 operation can be adjusted in initial set mode

(p. 46).

o MAIN DIALChanges the displayed frequency, selects quick/ini-

tial set mode items, etc.

!0 PREAMP SWITCH [P.AMP] (p. 21)Push momentarily to turn the preamp ON or OFF.

!1 CH SWITCH [CH] (p. 35)Push momentarily to turn the memory channel se-

lect function ON or OFF. [MEMO] blinks while memory channel select function is

turned on.

2

2

PANEL DESCRIPTION

MIC

IC-718

PHONES

RF/SQLAF SHIFTRIT

LOCK

MODE FIL TS

PWR

TUNER

COMP

P.AMP

UP

NB

ATT

SET

CH DN

ENTF-INP

V/M 1

MW4

A=B2

M-CL 5

SCN8

ANF0NR .

A/B 3

VOX97SPL

M V 6

Speaker Function Display @1 @0 !9 !7

!5

!4

!6

!3

!2

!0

!8

!1oiuytre

w

q


5/62

3

2PANEL DESCRIPTION

Push several times (or push and hold) [ DN]/[UP]

until desired memory channel appears.

After pushing [F-INP/ENT], push desired memory chan-

nel number from the keypad, then push [FINP/ENT]

again to select the memory channel directory.

Push [CH] to exit the memory channel select function.

!2 MEMORY CHANNEL (BAND) UP/DOWNSWITCHES [DN]/[UP] (p. 35)Push one or more times to select the memory

channel, while [MEMO] indicator is blinking.

Push to select a band.

Push to select the quick/initial set mode itemswhile quick/initial set mode is selected.

!3 ATTENUATOR SWITCH [ATT] (p. 22)

Push to toggle the 20 dB attenuator function ON

and OFF.

!4 TUNER SWITCH [TUNER] (pgs. 28, 29)

Push momentarily to toggle the automatic an-

tenna tuner function ON/OFF.An optional antenna tuner must be connected.

Push for 1 sec. to manually tune the tuner.An optional antenna tuner must be connected.

When the tuner cannot tune the antenna, the tuning cir-

cuit is bypassed automatically after 20 sec.

!5 SET SWITCH [SET]

Push for 1 sec. to enter the quick set mode. (p.

41)Pushing and holding [SET], and then push

[POWER] to enter the initial set mode. (p. 41)

Push to toggle the meter function; (p. 26)PO: indicates the relative RF output power.

ALC: Indicates ALC level.

SWR: indicates the SWR over the transmission line.

!6 MIC COMPRESSOR SWITCH [COMP] (p. 27)Toggles the Mic. compressor function ON and OFF.

!7 KEYPAD

The keypad can be used for several functions as

discribed below: [F-INP/ENT], keypad then [F-INP/ENT].

Direct frequency input. (pgs. 4, 7)

[CH], [F-INP/ENT], keypad then [F-INP/ENT] then [V/M]

Memory channel selection.(pgs. 4, 35)

[V/M], [A=B], [A/B], [MW], [M-CL], [MV], [SPL], [SCAN],

[VOX], [NR] (option) and [ANF] (option) switch. (p. 4)

!8 NOISE BLANKER SWITCH [NB] (p. 22)

Toggles the noise blanker ON and OFF. The noise

blanker reduces pulse-type noise such as thatgenerated by automobile ignition systems. This

function is not effective against non pulse-type

noise.

Push [NB] for 1 sec to enter the noise blankerlevel setting condition.

!9 QUICK TUNING STEP SWITCH [TS] (pgs. 18, 19)

Selects a quick tuning step or turns the quick tun-ing step OFF.While the quick tuning indicator (") is displayed, the

frequency can be changed in kHz step.

While the quick tuning step is OFF, it turns the 1Hz step ON and OFF when pushed for 1 sec.1 Hz indication appears and the frequency can be

changed in 1 Hz steps.

While the kHz quick tuning step is selected, it en-ters tuning step set mode when pushed for 1 sec.

@0 FILTER SWITCH [FIL] (p. 24)

Push momentarily to toggle between the pre-pro-

grammed normal, wide and narrow IF filters for

the selected operating mode.

@1 MODE SWITCHES [LSB/USB]/[CW/CW-

R]/[RTTY/RTTY-R]/[AM] (p. 20)Push to toggle an operating mode.Push[MODE] for 1 sec. during SSB mode to toggle be-

tween LSB or USB.

Push [MODE] for 2 sec. during CW or RTTY mode, to

toggle between CW and CW reverse or RTTY and RTTY

reverse. appears on the display.


6/62

4

2 PANEL DESCRIPTION

s Front panel (continued)

@2 VFO/MEMORY SWITCH/1 [V/M1] (pgs. 16, 35)

Toggles the operating mode between VFO modeor memory mode when pushed.

@3 MEMORY WRITE SWITCH/4 [MW4] (p. 36)

Stores the displayed frequency and operatingmode into the selected memory channel when

pushed for 1 sec.

@4 SPLIT SWITCH/7 [SPL7] (p. 30)

Turns the split frequency operation ON or OFFwhen pushed.

@5 NR SWITCH/. [NR . ] (p. 23)

Toggles the optional noise reduction function ONor OFF when pushed. Functions in all modes.An optional UT-106 DSP UNIT is required.

[NR] appears on the display.

Enters noise reduction level set mode whenpushed for 1 sec.

@6 ANF SWITCH/0 [ANF0] (p. 23)Toggles the Automatic Notch Filter function ON orOFF. Functions in SSB and AM modes.

An optional UT-106 DSP UNIT is required.

[ANF] appears on the display.

@7 FRQUENCY INPUT/ENTER SWITCH

[F-INP/ENT]

[F-INP/ENT], then keypad then [F-INP/ENT] Direct frequency input. (p. 17)

[CH] then [F-INP/ENT], then keypad then [F-INP/ENT]. Push [CH].

Direct memory number selection. (p. 35)

@8 SCAN SWITCH/8 [SCAN8] (p. 39)

Push momentarily to start/stop the programmedscan in VFO mode.

Push momentarily to start/stop the memory scanin memory mode.

@9 VOX SWITCH/9 [VOX9] (p. 27)

Turn the VOX function ON or OFF when pushedin SSB modes.

#0 MV SWITCH/6 [MV6] (p. 37)Transfers the memory contents to VFO when

pushed for 1 sec.

#1 MEMORY CLEAR SWITCH/5 [M=CL5] (p. 38)Clears the selected readout memory channel con-tents when pushed for 1 sec. in memory mode. [BLANK] appears above the memory channel number.

#2 VFO SELECT SWITCH/3 [A/B3] (p. 16)

Toggles between VFO A or VFO B in VFO mode.

Toggles between transmission VFO and recep-tion VFO during split operation.

#3 VFO EQUALIZATION SWITCH/2 [A=B2]Equalize the frequency and operating mode of the

two VFOs. The VFO B frequency and operating mode are equal-

ized with the VFO A frequency and operating mode.

ENTF-INP

V/M 1

MW4

A=B2

M=CL5

SCN8

ANF0NR .

A/B 3

VOX97SPL

M V 6#1

#3 #2

#0

@9

@8@7

@6

@3

@4

@5

@2MODE FILTER TS

TUNER

COMP

P.AMP

UP

NB

ATT

SET

CH DN

ENTF-INP

V/M 1

MW4

A=B2

M=CL5

SCN8

ANF0NR .

A/B 3

VOX97SPL

M V 6


7/62

s Function display

q LOCK INDICATOR (p. 19)

Appears when the dial lock function is in use.

w RECEIVE INDICATOR

Appears while receiving a signal or when thesquelch is open.

e TUNE INDICATORAppears while the automatic tuning function is acti-

vated.

r TRANSMIT INDICATOR

Appears while transmitting.

t FUNCTION INDICATORS

P.AMP appears when antenna preamp is in use.

ATT appears when the attenuator function is inuse.

NB appears when the Noise Blanker function isturned ON.

BK appears when the semi break-in function isselected in quick set mode.

F-BK appears when the full break-in function

activates in CW mode. (p. 31)

VOX appears when the VOX function is selected

in quick set mode.

COM appears when the speech compressor ac-

tivates in SSB mode.

SCAN appears when the scan function is acti-vated.Flashes when scan is paused.

y DSP UNIT INDICATOR (p. 49)

Appears when an optional UT-106 DSP UNIT is in-stalled.

u AUTOMATIC NOTCH FILTER INDICATOR (p. 23)Appears when the optional Automatic Notch Filter

function is in use.

i NOISE REDUCTION INDICATOR (p. 23)

Appears when the optional Noise Reduction func-tion is in use.

o SIGNAL/SQL/RF-GAIN METER

Functions as an S-meter while receiving.

Functions as a Power, ALC or SWR meter whiletransmitting. (p. 26)

!0 VFO/MEMORY INDICATOR (p. 16)

VFO A or B appears when VFO mode is se-lected.

MEMO appears when memory mode is selected.

!1 MEMORY CHANNEL NUMBER READOUT (p. 35)Shows the selected memory channel number.

!2 BLANK INDICATOR (p. 38)Shows that the displayed memory channel is not

programmed.This indicator appears both in VFO and memory mode.

!3 SPLIT INDICATORS (p. 30)

Appears when the split frequency operation is inuse.

!4 RIT INDICATOR (p. 21)Appears when the RIT function is in use.

!5 FREQUENCY READOUTShows the operating frequency.

!6REVERSE INDICATOR (p.19)Appears when the CW reverse or RTTY reversemode is selected.

!7 WIDE/NARROW FILTER INDICATORS (pgs. 24, 25)

appears when the wide IF filter is selected.

appears when the narrow IF filter is se-

lected.

!8 PROGRAMMABLE TUNING STEP INDICATORS

Appears when the programmable tuning step is se-lected.

!9 MODE INDICATORS (p. 20)Indicates the selected operating mode.

5

2PANEL DESCRIPTION

!9 !6!7!8

o !1!0

r

e

w

!4

!2

!5

!3t

q

y

u

i


8/62

6

2 PANEL DESCRIPTION

s Rear panel

q ANTENNA TERMINAL [ANT] (p. 10)

Connects a 50 antenna with a PL-259 connectorand a 50 coaxial cable.

w DC POWER SOCKET [DC 13.8V] (p. 12)Accepts 13.8V DC through the supplied DC power

cable.

e TUNER CONTROL SOCKET [TUNER] (p. 14)Accepts the control cable from an optional AH-4 AU-TOMATIC ANTENNA TUNER.

r CI-V REMOTE CONTROL JACK [REMOTE] (p. 57)

Designed for use with a personal computer for re-mote operation of transceiver functions.

t EXTERNAL SPEAKER JACK [EXT SP] (p. 11)Connects an 8 external speaker, if desired.When an external speaker is connected, the internal

speaker does not function.

y ACCESSORY SOCKET [ACC] (p. 7)Enables connection to external equipment such asan optional AT-180 AUTOMATIC ANTENNA TUNER, a

TNC for data communications or a liner amplifier,etc.

u ELECTRONIC KEYER JACK [KEY]

Accepts a paddle to activate the internal electronickeyer.Selection between the internal electronic keyer and

straight key operation can be made in initial set mode.

i ALC INPUT JACK [ALC]Connects to the ALC output jack of a non-Icom lin-

ear amplifier.

o SEND CONTROL JACK [SEND] (p. 14)

Goes to ground while transmitting to control exter-nal equipments such as a liner amplifier. Max. control level: 16 V DC/2 A

!0 GROUND TERMINAL [GND] (p. 9)Connects the terminal to ground.

q w e

rtyuio!0

1 2 3 4

8765

9 10 11 12

13

Rear panel view

When connecting

a straight key

When connecting

a paddle

(dot)

(com)

(dash)

()


9/62

7

2PANEL DESCRIPTION

DACC SOCKET INFORMATION

ACC socket

When connecting the ACC conversion cable (OPC-599)

ACC PIN # NAME DESCRIPTION SPECIFICATIONS COLOR

1 8 V Regulated 8 V output.Output voltage : 8 V 0.3 VOutput current :Less than 10 mA

brown

2 GND Connects to ground. red

3 SEND

Input/output pin.Goes to ground when transmitting.When grounded, transmits.

Ground level :0.5 V to 0.8 VInput current : Less than 20 mA orange

4 BDT Data line for the optional AT-180. yellow

5 BANDBand voltage output.(Varies with amateur band)

Output voltage :0 to 8.0 V green

6 ALC ALC voltage input.Control voltage :4 to 0 VInput impedance :More than 10 k

blue

7 NC purple

8 13.8 V 13.8 V output when power is ON. Output current :Max. 1 A gray

9 TKEY Key line for the AT-180. white

10 FSKK RTTY keying input.

Ground level :0.5 to 0.8 V

Input current :Less than 10 mA black

11 MOD Modulator input.Input impedance :10 kInput level : Approx. 100 mV

rmspink

12 AFAF detector output.Fixed, regardless of [AF] position.

Output impedance :4.7 kOutput level : 100 to 300 mV rms

lightblue

13 SQLSSquelch output.Goes to ground when squelch opens.

SQL open :Less than 0.3 V/5 mASQL closed : More than 6.0 V/100 A

lightgreen

Rear panelview

1 2 3 4

8765

9 10 11 12

13

ACC 1

ACC 2

FSKK AF

GND SQLS

SEND 13.8 V

MOD ALC

8 V ALC

GND NC

SEND 13.8 V

BAND

1

1

2

2

3

3

4

4

8

8

7

7

6

6

5

5

9 10 11 12

13

1

2

3

4

76

5


10/62


11/62

3

9

INSTALLATION AND CONNECTIONS

s Unpacking

After unpacking, immediately report any damage to thedelivering carrier or dealer. Keep the shipping cartons.

For a description and a diagram of accessory equip-

ment included with the IC-718, see Supplied acces-sories on p. 1 of this manual.

s Selecting a location

Select a location for the transceiver that allows ade-quate air circulation, free from extreme heat, cold, or

vibrations, and away from TV sets, TV antenna ele-ments, radios and other electro-magnetic sources.

The base of the transceiver has an adjustable stand fordesktop use. Set the stand to one of two angles de-pending on your operating conditions.

s Grounding

To prevent electrical shock, television interference(TVI), broadcast interference (BCI) and other prob-

lems, ground the transceiver through the GROUNDterminal on the rear panel.

For best results, connect a heavy gauge wire or strapto a long earth-sunk copper rod. Make the distance be-

tween the [GND] terminal and ground as short as pos-

sible.

RWARNING: NEVER connect the [GND]terminal to a gas or electric pipe, since the connec-tion could cause an explosion or electric shock.

s Antenna connection

For radio communications, the antenna is of critical im-portance, along with output power and sensitivity. Se-

lect antenna(s), such as a well-matched 50 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 coaxialcable.

CAUTION: Protect your transceiver from lightningby using a lightning arrestor.

Antenna SWREach antenna is tuned for a specified frequencyrange and SWR may be increased out-of-range.

When the SWR is higher than approx. 2.0:1, thetransceivers power drops to protect the final transis-tor. 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 antennatuner.The IC-718 has an SWR meter to monitor theantenna SWR continuously.

PL-259 CONNECTOR INSTALLATION EXAMPLE

30 mm 98 in 10 mm 38 in 12 mm 116 in

30 mm

10 mm (soft solder)

10 mm

12 mm

solder solder

Softsolder

Coupling ring

Slide the coupling ring

down. Strip the cable

jacket and soft solder.

Slide the connector

body on and solder it.

Screw the coupling

ring onto the

connector body.

Strip the cable as

shown at left. Soft

solder the center con-

ductor.

q

w

e

r


12/62

10

3 INSTALLATION AND CONNECTIONS

s Required connections

MIC

IC-718

PHONES

RF/SQLAF SHIFTRIT

LOCK

MODE FIL TS

PWR

TUNER

COMP

P.AMP

UP

NB

ATT

SET

CH DN

ENTF-INP

V/M1

MW4

A=B2

M-CL 5

SCN8

ANF0NR .

A/B 3

VOX97SPL

M V 6

MICROPHONES (p. 55)

SM-20HM-36

GROUND (p. 9)

Use the heaviest gauge wire

or strap available and make

the connection as short as

possible.

Grounding prevents electrical

shocks, TVI and other

problems.

ANTENNA (p. 56)

[Example]: 1.830 MHz bands

DC POWER SUPPLY

PS-85

CW KEY

A straight key can be used when the

internal electronic keyer is turned

OFF in CW PADDL in initial set

mode. (p. 31)

approx.

24.5m;8

0.3ft

AH-710

Front panel

Rear panel


13/62

11

3INSTALLATION AND CONNECTIONS

s Advanced connections

MIC

IC-718

PHONES

RF/SQLAF SHIFTRIT

LOCK

MODE FIL TS

PWR

TUNER

COMP

P.AMP

UP

NB

ATT

SET

CH DN

ENTF-INP

V/M1

MW4

A=B2

M-CL 5

SCN8

ANF0NR .

A/B 3

VOX97SPL

M V 6

MIC

The AFSK modulation signal can be

input from [MIC]. (p. 33)

HEADPHONES

Front panel

ANTENNA (p. 13)

Connects a liner amprifier, etc.

[REMOTE] (p. 57)

Used for computer control and transceive operation.

[SEND], [ALC]

(p. 14)

Used for connecting a

non-Icom linear ampli-

fier.

EXTERNAL SPEAKER (p. 55)

SP-21, etc

ACC SOCKETS (p. 7)

AH-4 (p. 55)

AH-2b

or long wire

with

Rear panel


14/62

12


s Power supply connections

Use an optional PS-85 DC POWER SUPPLY when oper-ating the IC-718 with AC power. Refer to the diagrams

below.

CAUTION: Before connecting the DC powercable, check the following important items. Makesure:

The [POWER] switch is OFF.

Output voltage of the power source is 1215 Vwhen you use a non-Icom power supply.

DC power cable polarity is correct.Red : positive + terminal

Black : negative_ terminal

CONNECTING A VEHICLE BATTERY

12 V

batterySupplied

DC power cable

+ red_ black Crimp

Solder

Grommet

Fuses

NEVER connect toa 24 V battery.

NOTE: Use terminals forthe cable connections.

CONNECTING NON-ICOM DC POWER SUPPLY

1 2 3 4

8765

9 10 11 12

13

DC power

socket

DC power supply AC outlet

AC cable

20 A fusesSupplied

DC power cable

13.8 V 20 A

_ +

blackred+

_

CONNECTING PS-85 DC POWER SUPPLY

1 2 3 4

8765

9 10 11 12

13

PS-85

Connect to an AC outletusing the supplied AC cable.

DC power cable

DC powersocket

NEVER connect to a battery without supplied DC fuses,otherwise the fire hazard may occur.


15/62

13

3INSTALLATION AND CONNECTIONS

s Linear amplifier connections

CONNECTING THE IC-PW1

1 2 3 4

8765

9 10 11 12

13

ANT

ACC-1

ACC REMOTE

REMOTE

INPUT1

GND

GND

IC-PW1

IC-718GroundAC outlet(Non-European versions : 100120/220240 VEuropean version : 230 V)

Coaxial cable(supplied with the IC-PW1)

ACC cable (supplied with the IC-PW1)

Remote control cable (supplied with the IC-PW1)

To anantenna

EXCITER1 1&2

OPC-599 conversion cable(option)

CONNECTING THE IC-4KL

1 2 3 4

87659 1 0 1 1 1 2

13

IC-718

Ground

IC-4KLRemote

controller

Coaxial cable (supplied with the IC-4KL)

ACC cable (supplied with the IC-4KL)

ACC

IC-4KL

Remote control cable(supplied with the IC-4KL)

AC outlet (220240 V)

To anantenna

ANT

ACC

OPC599 conversion cable(option)


16/62

CONNECTING THE AT-180 (p. 28)

DO NOT! connect AT-180 and AH-4 at the sametime. Both tuners will not function correctly.

Turn the IC-718s power OFF when connecting the

AT-180, otherwise, the CPU may malfunction andthe AT-180 may not function properly.

14


s External antenna tuners

CONNECTING A NON-ICOM LINER AMPLIFIER

RWARNING:Set the transceiver output

power and linear amplifierALC output level referring tothe linear amplifier instructionmanual.

The ALC input level must bein the range 0 V to 4 V, andthe transceiver does not ac-cept positive voltage. Non-matched ALC and RF powersettings could cause a fire orruin the linear amplifier.

1 2 3 4

8765

9 10 11 12

13

RF OUTPUT RF INPUT

ALC

SEND

50 coaxial cable

IC-718ANT

ALCSEND

To anantenna

Non-Icom linear amplifier

The specifications for the SEND relay are 16 V DC2 A. If this level is exceeded, a large external relaymust be used.

CONNECTING THE AH-4 (p. 29)

Coaxial cable (from the AH-4)

Long wire or optional AH-2b

Ground

IC-718 AH-4

Control cable

Ground

1 2 3 4

8765

9 10 11 12

13

Ground

HF

antenna

[ANT] [ACC] [ACC]AT-180

ACC cable supplied with the AT-180Coaxial cable supplied

with the AT-180

IC-718

one of twoconnectors


17/62

4

15

FREQUENCY SETTING

s When first applying power (CPU resetting)

Before first applying power, make sure all connec-tions required for your system are complete by refer-

ring to Chapter 3. Then, reset the transceiver usingthe following procedure.

Resetting CLEARS all programmed contents inmemory channels and returns programmed values

in quick/initial set mode to default values.

q Make sure the transceiver power is OFF.w While pushing and holding [ UP] and [ DN],

push [PWR] for 1 sec. to turn power ON.The internal CPU is reset.

The transceiver displays its initial VFO frequencies

when resetting is complete.

e All quick/initial set mode settings are returned to

default values. (p. 41)

s Initial settings

After resetting the transceiver, set controls andswitches as shown in the figure below.

[PWR]

[] []

[METER]: Po

[LOCK]: OFF

[POWER]: OFF [P.AMP],

[ATT],: OFF

[RIT]: Center[IF SHIFT]: Center

[AF]: Max. CCW

[RF/SQL]: 12 o'clock

[NB], [COMP]:

OFF

Turn power ON, then check the display. If any of the

following indicators appear, turn them OFF as follows:

Quick tuning step indicator w : Push [TS].1 Hz frequency readout : Push [TS] for 1 sec.

(while quick tuning

step is OFF)RIT indicator : Center.

Split indicator : Push [SPL].

RITIT

Under cooler temperatures, the LCD may appeardark and unstable after turning power ON. This is

normal and does not indicate any equipment mal-function.

CCW : counterclockwise


18/62

16

4 FREQUENCY SETTING

s VFO description

VFO is an abbreviation of Variable Frequency Oscilla-tor, and traditionally refers to an oscillator.

The IC-718 VFO can store a frequency and an operat-

ing mode.

You can call up a desired frequency to the VFO with

the keypad or the memory transfer function (see p. 37).You can also change the frequency with the tuning dial

and select the operating mode with the [MODE] switchor call up previously accessed frequency and modes

with the band stacking register (p. 18).

The IC-718 has two VFOs, specially suited for split fre-

quency opration.The VFOs are called VFO A and VFO

B.You can call up the desired VFO.

Differences between VFO mode and memory mode

VFO MODE

Each VFO shows a frequency and operating mode. Ifthe frequency or operating mode is changed, the VFO

automatically memorizes the new frequency or newoperating mode.

When the VFO is selected from another VFO or mem-

ory mode, the last-used frequency and operatingmode for that VFO appears.

[EXAMPLE]

MEMORY MODE (pgs. 35-38)

Each memory channel shows a frequency and oper-ating mode like a VFO. Even if the frequency or mode

is changed, the memory channel does not memorizethe new frequency or operating mode.

When the memory channel is selected from another

memory channel or VFO mode, the memorized fre-quency and operating mode appear.

[EXAMPLE]

VFO is selected.

The frequency

is changed.

Memory mode

is selected.

VFO is selected

again.

Memory channel 1

is selected.

The frequency

is changed.

Another memory

channel is selected.

Memory channel 1

is selected again.

Changed frequency (14.123 MHz) does not appear andmemorized frequency (14.100 MHz) appears instead.

Changed frequency (14.123 MHz) appears.


19/62

DDirect frequency entry with keypadThe transceiver has a keypad for direct frequencyentry as described below.

q Push [F-INP/ENT], then push the numeral keys on

the keypad to enter the MHz digits for the desiredfrequency. If a key is mistakenly pushed, push [SET] (or any key

except keypad) and start again from the beginning.

When entering the same MHz digits as the displayed

frequency, this step can be skipped.

w Push [] on the keypad.

e Push the numeral keys to enter the frequency dig-its below 1 MHz. If a key is mistakenly pushed, push [SET] (or any key

except keypad) and start again from the beginning.

r Push [F-INP/ENT] to set the input frequency.When pushing [F-INP/ENT] after entering the MHz dig-

its, zeros are automatically entered for the kHz digits.

17

4FREQUENCY SETTING

DUsing the tuning dialq Push [UP] or [DN] one or more times to

select the desired ham band.

w Select the desired operating mode with the mode

switch. (p. 20).

e Rotate the tuning dial to set the desired frequency

For general coverage receiver useThe IC-718 has a general coverage receiver band.

qPush [UP] or [DN] one or more times to selectthe general coverage receiver band.

Note: Even if you select the ham band, you can set

the transceiver to the general coverage frequency.When the displayed frequency exits the transmit fre-

quency range (ham band), a band edge beep may beemitted (depends on initial set mode programming).

To set to 21.025 MHz

To set to 706 KHz (0.706 MHz)

To set to 7 MHz

To change 14.195 to 14.850 MHz

Start

ENTF-INP

V/M 1 NR ANF0 A=B2 M=CL5 ENTF-INP

A=B2

NR 7SPL ANF0 M V 6 ENTF-INP

ANF0

ENTF-INP

7SPL

ENTF-INP

SCN8 M=CL5NR

s Frequency setting

[EXAMPLE]


20/62

18

4 FREQUENCY SETTING

DBand selectionAll HF ham bands and a general coverage receiverband are included in the IC-718.

Push [UP]/[DN] to select the desired band.Pushing [ UP]/[ DN] continuously scrolls through the

available bands.

Note: For example, if 6.10000 MHz is resistered asthe General coverage frequency, then the General

coverage band automatically positions itself between3.5 MHz and 7 MHz band.

DProgrammable tuning stepsProgrammable tuning steps are available to suit youroperating requirements.

These tuning steps are:Selectable from 0.1, 1, 5, 9, 10, 100 kHz

q Push [TS], the programmable tuning step indica-tor, ", then appears above the 1 kHz.Rotating the tuning dial changes the frequency accord-

ing to the set tuning step.

w Push [TS] for 2 sec. while the programmable tun-ing step indicator appears to enter the tuning step

set mode.e Rotate the tuning dial to set the desired tuning

step.r Push [TS] to exit the tuning step set mode.

t Rotate the tuning dial to change the frequency ac-cording to the set tuning step.

Programmable tuning

step indicator

10 KHz tuning steps isselected.

DN

UP

General (new)

General (old)

DBand stacking resisterThe band stacking register automatically stores the

last frequency and mode used for each band.This isconvenient for contest operation, etc. The tables

below shows the band stacking register default set-tings for each band.

BAND BAND BAND

1.9 MHz 1.91000 MHz CW

3.5 MHz 3.55000 MHz LSB

7 MHz 7.05000 MHz LSB

10 MHz 10.12000 MHz CW

14 MHz 14.10000 MHz USB

General 15.10000 MHz USB

BAND BAND BAND

18 MHz 18.10000 MHz USB

21 MHz 21.20000 MHz USB

24 MHz 24.95000 MHz USB

28 MHz 28.50000 MHz USB

29 MHz 29.50000 MHz USB


21/62

19

4FREQUENCY SETTING

10 Hz tuning

1 Hz tuning

momentarily

1 sec.1 sec.

1 sec.

Programmable step tuning

(100 Hz100 kHz)

Selectable for each mode.

momentarily

[TS] SWITCH FLOW CHART

s Dial lock function

The dial lock function prevents accidental changescaused by the tuning dial. The lock function electroni-cally locks the dial.

Push [LOCK] momentarily to toggle the lock function

ON and OFF. LOCK appears in the function display while the lock func-

tion is activated.

LOCK appears while the lock

function is activated.

D1 Hz and 10 Hz tuning stepsWhen the programmable tuning step, ", disappear,

rotating the tuning dial changes the frequency in in-crements of 1 or 10 Hz.

q Push [TS] one or more times until the programma-ble tuning step indicator " disappears.

w Push [TS] for 1 sec. to toggle between the 1 and10 Hz step settings.When the 1 Hz step is selected, the 1 Hz digit appears

in the frequency indication; when the 10 Hz step is se-

lected, the 1 Hz digit disappears from the frequency in-

dication.

TS

Rotating the tuning dial

changes the frequency

in 10 Hz steps.

Rotating the tuning dial

changes the frequency

in 1 Hz steps.

Push for 1 sec.


22/62

5

20

s Mode selection

The following modes are available in the IC-718:

SSB (LSB/USB), CW, CW REV (CW reverse), RTTY,

RTTY REV (RTTY reverse)and AM.

Push [MODE] one or more times to select desiredoperation mode.

Push [MODE] for 1 sec. to toggle between USBand LSB. (SSB mode only)

Push [MODE] for 1 sec. to toggle between CW andCW reverse or RTTY and RTTY reverse. (CW andRTTY mode only)

The selected mode is indicated in the function display.

Note: If desired mode cannot be selected, its usemay inhibited by initial set mode. (p. 44)

OPERATING MODE SELECTION

Push

momentarily

Push

for 1 sec.

USB LSB

CW CW

RTTY RTTY

AM

MODE

MODE

The IC-718 uses the same control, [RF/SQL], to ad-just either the RF gain or the squelch. [RF/SQL] ad-

justs either the RF gain or the squelch depending onthe operating mode selected and the condition of the

RF/SQL item in initiaset mode (p. 44).

[RF/SQL] control priority

* The RF gain is set to maximum level when the [RF/SQL]

is set as [SQL] control.

The RF (Radio Frequency) gainis used to adjust thereceiver gain.Shallow rotation moves the S-meter to the right indicating

the signal strength which can be received.

The recommended position for RF gain is the 12

oclock position since this sets RF gain to the max.

The SQUELCH removes noise output from the

speaker (closed condition) when no signal is re-ceived. The squelch is available for the other modes.A segment appears in the S-meter to indicate the S-meter

squelch level.

When set as the [RF/SQL] control

Set mode

setting

USB, LSB,

CW, RTTY

AM

At (AUTO) RF GAIN SQL*

Sq (SQL)

rS (RF/SQL)(default)

SQL*

RF/SQL RF/SQL

SQL*

Minimum RF gain

Adjustable range

RF gain adjustablerange

Maximum RF gain

Maximum RF gain

Squelch is open. S-meter squelch

S-meter squelchthreshold

Shallow Deep

Squelch is open.

S-meter squelch

S-meter squelchthreshold

When set as the [SQL] control

When set as the [RF] control

s RF gain and Squelch

RECEIVE AND TRANSMIT


23/62


24/62

22

5 RECEIVE AND TRANSMIT

Attenuator

The attenuator prevents desired signals from distort-

ing when very strong signals are near the desired fre-

quency or when very strong electric fields, such asfrom broadcasting stations, are near your location.

Push [ATT] to toggle the 20 dB attenuator function

ON and OFF. ATT appears when the attenuator is turned ON.

Appears when the

attenuator ON.

Peak meter hold

The peak meter hold function freezes the highest dis-played bar segment in any meter function for about

0.5 sec. so that you can more easily read the meter.This function can be turned ON and OFF in initial setmode (p. 45).

Initial reception of a signalresults in an S-meter readingof 40 dB.

The highest indicated barremains displayed for 0.5 sec.

even when the signal strengthdecreases.

Noise blanker

The noise blankerreduces pulse-type noise such as

that generated by automobile ignition systems.

q Push the [NB] switch to turn the noise blanker ONor OFF.w Push the [NB] for 1 sec. to enter the noise blanker

level setting condition.e Rotate the tuning dial to adjust the noise blanker

level.

r Push [NB] to exit the setting condition.t Push [NB] again to turn the noise blanker function

OFF. [NB] indicator disappears.

When using the noise blanker, received signalsmay be distorted if they are excessively strong.

The noise blanker function in AM mode can bedeactivated depending on initial set mode setting.

(p. 45)

[NB] switch


25/62

23

5RECEIVE AND TRANSMIT

ANF (Automatic Notch Filter) function

When an optional UT-106 is installed (DSP appears

in the function display), an auto notch function can beused.

The function automatically attenuates more than 3beat tones, tuning signals, etc., even if they are mov-

ing.

The auto notch functions in SSB mode only.

q Select SSB mode.w Push [ANF] to turn the auto notch function ON.

[ANF] indicator appears.

e Push [ANF] again to cancel the function. [ANF] indicator disappears.

Unwanted tonefrequency

Desiredsignal (AF)

Desiredsignal (AF)

Particular frequencyis attenuated

Auto notch OFF Auto notch ON

s DSP function (Requires an optional UT-106 DSP UNIT)

When an optional UT-106 is installed (DSP appears

in the function display), noise reduction function canbe used.

The noise reduction function reduces noise compo-

nents and picks out desired signals which are buriedin noise. The received AF signals are converted to

digital signals and then the desired signals are sepa-rated from the noise.

q Push [NR] to turn the noise reduction ON. [NR] indicator appears.

w Push [NR] for 1 sec. to enter the noise reduction

level setting condition.

e Rotate the tuning dial to adjust the noise reductionlevel.

r Push [NR] to exit the setting condition.

t Push [NR] again to turn the noise reduction OFF. [NR] indicator disappears.

Noise reduction example

Higher setting of the [NR] level results in audio sig-

nal masking or distortion. Set the [NR] level for

maximum clarity. The noise reduction function isavailable in all modes.

Noise reduction OFF Noise reduction activated

Desiredsignal (CW)

Noise components

NR (Noise reduction) function


26/62

24


s Filter selection

The filter selection switches the IF passband width as

shown in the table at right.

The filter selection is automatically memorized in

each mode.

q Select the desired mode with the mode switches.w Push [FIL] one or more times to select the desired

filter combination. or does not appear while in normal IF filter mode.

appears when the wide IF filter is selected.

appears when the narrow IF filter is selected.

When an optional filter is installed, set the optionalfilter in initial set mode. An optional filter is not se-

lected by default.

Optional filter variations

FL-65 (2.4 kHz)*

FL-257 (3.3 kHz)**

FL-96 (2.8 kHz)**

FL-222 (1.8 kHz)**

FL-52A (500 Hz)**

FL-53A (250 Hz)**

2nd IF signal 2nd IF signal/DETCFWS450HT (6 kHz)***

Through

* AM; Narrow,

SSB/CW/RTTY; Normal

*** AM; Normal,

SSB/CW/RTTY; Wide

** OPTION

Name

FL-52A

FL-53A

FL-96

FL-222

FL-257

Band width

500 Hz/-6dB

250 Hz/-6dB

2.8 KHz/-6dB

1.8 KHz/-6dB

3.3 KHz/-6dB

Mode

CW/RTTY-N

CW/RTTY-N

SSB-W

SSB-N

SSB-W

no FL-52A FL-53A FL-96 FL-222 FL-257

SSB

WIDE 6 K* 6 K* 6 K*6 K*

6 K*6 K*

NORMAL 2.4 K 2.4 K 2.4 K 2.4 K 2.4 K 2.4 K

NARROW 500* 250* 1.8 K

CW

WIDE 6 K* 6 K* 6 K*6 K*

6 K*6 K*

NORMAL 2.4 K 2.4 K 2.4 K 2.4 K 2.4 K 2.4 K

NARROW 500 250 1.8 K

RTTY

WIDE 6 K* 6 K* 6 K*6 K*

6 K*6 K*

NORMAL 2.4 K 2.4 K 2.4 K 2.4 K 2.4 K 2.4 K

NARROW 500 250 1.8 K

AM

WIDE

NORMAL 6 K 6 K 6 K 6 K 6 K 6 K

NARROW 2.4 K2.4 K 2.4 K 2.4 K 2.4 K 2.4 K

500* 250* 2.8 K* 1.8 K* 3.3 K*

2.8 K

2.8 K

2.8 K

( Hz )

3.3 K

3.3 K

3.3 K

Note: *This selection can be used when the expanded filterselection function is turned on in the initial set mode. (see right)

Filter construction

Filter selection table


27/62

25


s Filter setting

When an optional filter is installed, set the optional fil-

ters in initial set mode. Optional filters are not selected

by default. (p. 47)

DOptional filter settingq While pushing and holding [SET], push [POWER]

to enter initial set mode.

w Push [UPY] or [ZDN] one or more times untilFIL appears on the display.

e Rotate the tuning dial to select the installed filter. no, 52A, 53A, 96, 222 and 257 indicate no op-

tional filter, FL-52A, FL-53A, FL-96, FL-222 and

FL-257, indicate respectively for 455 kHz IF filter selec-

tion.

r Push [PWR] to exit initial set mode.

DExpanded filter selectionThe selectable filter combinations can be expanded

by setting the expanded filter selection to ON. Thenextra wide or narrow filter can be selected on desired

mode.

q While pushing and holding [SET], push [PWR] toenter initial set mode.

w Push [UPY] or [ZDN] one or more times until

EXP FIL appears.e Rotate the tuning dial to turn the expanded filter

selection on.

If on is selected, the expanded filter selection can beused.

Wide/narrow filter selecting

r Push [UPY] one or more timesuntil WIDE or NAR ap-

pears on the display.t Push [MODE] one or more times

to select the desired mode.

y Rotate the tuning dial to select afilter.

u Repeat steps t and y to select

IF filters for other modes, if de-sired.The filter combinations are stored

depending on operating modes.

i Push [POWER] to exit initial set

mode. no FL-52A FL-53A FL-96 FL-222 FL-257

SSB no no 222 (1.8 K)

52A (500) 53A (250)

CW

52A (500) 53A (250) 222 (1.8 K)

RTTY 52A (500) 53A (250) 222 (1.8 K)

AMNOR (2.4 K)

52A (500) 53A (250) 96 (2.8 K) 222 (1.8 K) 257 (3.3 K)

NOR (2.4 K) NOR (2.4 K) NOR (2.4 K) NOR (2.4 K)NOR (2.4 K)

: default

no FL-52A FL-53A FL-96 FL-222 FL-257

SSBno no no 96 (2.8 K) no 257(3.3 k)

THU (6 K) THU (6 K) THU (6 K) THU (6 K) THU (6 K) THU (6 K)

CWno no no 96 (2.8 K) no 257(3.3 k)


RTTYno no no 96 (2.8 K) no 257(3.3 k)


AM

: default

Narrow filter setting table

Wide filter setting table

Optional filter selection

Expanded filter selection on

Wide filter setting

Narrow filter setting


28/62

26


Meter function

The bar meter in the function display acts as an S-meter (for relative signal strength) during receive and

can be selected for one of three functions duringtransmit.

Push [SET] one or more times to select the PO, ALCand SWR meter mode.

DISPLAYINDICATION

MEASUREMENT

Po Indicates the relative RF output power.

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 microphone gain (seeabove).

SWRIndicates the SWR over the transmis-

sion line.

s Function for transmit

Setting output power

q Push [SET] for 1 sec. to select quick set mode.

w Push [ UP]/[ DN] one or more times to selectRF Power.

e Rotate the main dial to select the desired output.Output power is displayed in 101 steps (L, 199 and H)

but is continuously selectable.

Available powerSSB/CW/RTTY: 2 (or less)100 WAM: 2 (or less)40 W**Carrier power

Setting microphone gain

Microphone gain must be adjusted properly so thatyour signal does not distort when transmitted.q Select SSB or another phone mode.

w Push [SET] for 1 sec. to enter the quick set mode.

e Push [ UP]/[ DN] one or more times to selectMIC GAIN.

r When speaking into the microphone adjust the micgain so that the ALC meter does not peak past the

ALC zone.t Push [SET] to exit quick set mode.

Maximum output

power is selected.

Microphone gain isset to 50.

Output power and microphone gain

ALC zone


29/62

27


IC-718 has a built-in, low distortion Mic compressorcircuit. This circuit increases your average talk power

in SSB mode and is especially useful for DXing whenthe receiving station is having difficulty copying yoursignal.

q Selecting USB or LSB mode.

w Select the mic gain display in quick set mode.Push [SET] for 1 sec. to select quick set mode.

Push [UP]/[DN] one or more times to select MIC

GAIN.

e Adjust the mic gain by rotating the main [DIAL].While transmitting at your normal voice level, the ALC

meter should read at about the middle of the ALC zone.

Be sure the mic gain is in the range of 20 to 50.

r Push [SET] to exit the quick set mode.t Push [COMP], then adjusty Push [SET] one or more times to select the ALC

meter.

u When speaking into the microphone adjust the micgain so that the ALC meter does not peak past the

ALC zone.

Note: When the ALC meter peaks above the ALCzone, your transmited voice may be distorted.

[COMP] switch

Microphone compressor

ALC zone

Adjust [COMP GAIN] so that the

ALC meter reads within the ALC

zone.

The VOX (Voice-operated Transmission) function tog-

gles between transmit and receive with your voice.This function provides an opportunity to input log en-tries into your computer, etc. while operating.

q Push [VOX] to turn the function ON.

w Select VOX Gain in quick set mode.Push [SET] for 1 sec. to select quick set mode.

Push [UP]/[DN] one or more times to select VOXGAIN

e While speaking into the microphone, adjust [VOXGAIN] until the transceiver is transmitting.

r Select VOX Delay in quick set mode.Push [UP]/[DN] one or more times to select VOXDelay

t While speaking into the microphone, adjust [VOXDELAY] as desired.

y Select ANTI-VOX in quick set mode.Push [ UP]/[DN] one or more times to select ANVOX

u If the receive audio from the speaker toggles the

transceiver to transmit during receive, adjust theANTI-VOX to the point where it has no effect.

i Push [SET] to exit the quick set mode.

VOX operation

[VOX] switch


30/62

The AT-180 automatic antenna tuner matches the IC-

718 to the connected antenna automatically. Once the

tuner matches an antenna, the variable capacitor an-gles are memorized as a preset point for each fre-quency range (100 kHz steps). Therefore, when youchange the frequency range, the variable capacitors

are automatically preset to the memorized point.

TUNER OPERATION

Tuner type setting (p.46)q Push [PWR] for 1 sec. to turn power OFF.

w While pushing and holding [SET], push [PWR] to

turn power ON.e Push [UPY] or [ZDN] one or more times to select

[TUNER].r Rotate the main dial to select 18.

AT-180 AUTOMATIC ANTENNA TUNER is selected.

NOTE: NEVER select 4 (AH-4 AUTOMATIC AN-

TENNA TUNER), otherwise the transceiver trans-mits automatically when turning the power ON.Push [TUNER] to cancel unexpected tramsmis-

sion. Then, re-select the tuner type correctly.

y Push [PWR] for 1 sec. to turn power OFF.

u Push [PWR] to turn power ON again.

AUTO TUNE:Push [TUNER] to turn the tuner ON. The antenna is

tuned automatically during transmission when the an-tenna SWR is higher than 1.5:1.

When the tuner is OFF, goes out.

MANUAL TUNING

During SSB operation on HF bands at low voice lev-

els, the AT-180 may not be tuned correctly. In suchcases, manual tuning is helpful.

Push and hold [TUNER] for 1 sec. to start manual tun-

ing.CW mode is selected, a side tone is emitted, and

blinks; then, the previous mode is selected.

If the tuner cannot reduce the SWR to less than 1.5:1

after 20 sec. of tuning, goes out. In this case,check the following:

the antenna connection and feedline

the antenna SWR (p. 26; meter function)

Through inhibitThe AT-180 has a through inhibit condition. When se-

lecting this condition, the tuner can be used at poorSWRs. In this case, automatic tuning in the HF bands

activates only when exceeding SWR 3:1. Therefore,manual tuning is necessary each time you change the

frequency. Although termed through inhibit, the tunerwill be through if the SWR is higher than 3:1 aftertuning.

CONVENIENT Tuner sensitive condition

If you require critical tuning at any time during trans-mission, select the tuner sensitive condition. See p.

51 for selection.

Automatic tuner start

If you want to turn OFF the tuner under conditions ofVSWR 1.5:1 or less, use automatic tuner on and

turn the tuner OFF. See p. 46 for turning the functionON and OFF.

28


CAUTION: NEVER transmit with the tuner ONwhen no antenna is connected. This will be dam-

age both the transceiver and the antenna tuner.

DO NOT! connect the AT-180 and AH-4 at thesame time. Both turners will not be function cor-rectly.

YY

[TUNER]

YY

[TUNER]

Tuning indicator;

Push and hold 1 sec. to start manual

tuning.

Optional AT-180 AUTOMATIC ANTENNA TUNER operation


31/62

29


The AH-4 matches the IC-718 to a long wire antenna

more than 7 m/23 ft long (3.5 MHz and above). See p. 14 for connection. See the AH-4 instruction manual for AH-4 installa-

tion and antenna connection details.

NEVER operate the AH-4 without an antenna wire.The tuner and transceiver will be damaged.

NEVER operate the AH-4 when it is ungrounded.

Transmitting before tuning may damage the trans-ceiver. Note that the AH-4 cannot tune when using a

12 long wire or multiple of the operating frequency.

TUNER OPERATION

Tuner type setting (p.46)q Push [PWR] for 1 sec. to turn power OFF.

w While pushing and holding [SET], push [PWR] toturn power ON.

e Push [UPY] or [ZDN] one or more times to select

[TUNER].r Rotate the main dial to select 4.

AH-4 AUTOMATIC ANTENNA TUNER is selected.

y Push [PWR] for 1 sec. to turn power OFF.

u Push [PWR] to turn power ON again.

MANUAL TUNING

q Set the desired frequency in an HF band. The IC-718 will not transmit outside of the ham bands,

the AH-4 tuner will tune all frequencies 3.5 to 30 MHz.

w Push and hold [TUNER] for 1 sec. blinks and CW appears while tuning.

e lights constantly when tuning is complete.

When the connected wire cannot be tuned, the

goes out, the AH-4 is bypassed and the antenna wire is

connected to the antenna connector on the transceiver

directly.

r To bypass the AH-4 manually, push [TUNER].

CONVENIENT PTT tune functionThe AH-4 is always tuned when the PTT is pushed

after the frequency is changed (more than 1%). Thisfunction removes the push and hold [TUNER] oper-

ation and activates first transmission on the new fre-quency. This function is turned ON in initial set mode(p. 46).

For mobile operation

For outdoor operation

Long wire

Optional AH-2b

antenna element

MIC

IC- 71 8

PHONESSQLAF S H IFTRIT

LOCK

MODEFIL TERT S

PWR

TUN ER

C OMP

P .AM P

UP

NB

ATT

SET

CH DN

ENTF-INP

V/M1

MW4

A=B2

M =CL5

SCN8

ANF0NR.

A/B3

VOX97SPL

MV6AH-4

RWARNING: HIGH VOLTAGE!NEVER touch the antenna element while tuning or

transmitting.

Tuning is required for each frequency. Be sure to

re-tune the antenna before transmitting when youchange the frequencyeven slightly.

YY

[TUNER]

Optional AH-4 AUTOMATIC ANTENNA TUNER operation

Tuning indicator;

Blinks: Tuning now

Appears: Tune is completed

Disappears: Tune is not completed

AH-4 setting example:


32/62

30


s Split frequency operation

Split frequency operation allows you to transmit andreceive on two different frequencies. Split frequency

operation uses two frequencies, one in VFO A andthe other in VFO B.

Following is an example of setting 7.057 MHz, CWmode in VFO A (for receive) and 7.025 MHz, CW

mode in VFO B (for transmit).

q Select VFO B and set the frequency to 7.025 MHz/CW.

w Push [A/B] to select VFO A and set the frequency

to 7.057 MHz/CW.e Push [SPL] to turn the split frequency operation

ON.

Split operation is now set for receive 7.057 MHz/CWand transmit 7.025 MHz/CW.

To change the receive frequency, rotate the main dial,

to change the transmit frequency, rotate the main dial

during transmit mode.

To exchange the transmit and receive frequencies,

push [A/B].

s SWRThe IC-718 has a built-in circuit of measuring antenna

SWRno external equipment or special adjustmentsare necessary.

Measuring SWRq Confirm that the output power is over 30 W.w Push [SET] one or more times to select the SWR

meter.e Push [MODE] one or more times to select CW or

RTTY operation.Key down or push [PTT] to transmit; then read theactual SWR from the meter:

1.5 well matched antenna

1.5 check antenna or cable connection, etc. The best match is in this range.


33/62

31


s Function for CW

Connection for CW

1 2 3 4

8765

9 10 11 12

13

Paddle

[ELEC KEY]

[MICROPHONE]

See p. 32 for connection details:

Paddle operation from front panel

MIC connector.

Straight key

Microphone

Initial set mode setting (p. 45)

4

8

12

[ACC]

1 2 3

765

9 10 11

13

For no break-in operation:

Connect an external switch such as

a foot switch; or use the RTTY

SEND terminal for all bands.

(See p. 33)

: normal

: reverse

: off

: UP/DN key

CW operation

q Connect a paddle or straight key as above.w Select CW (or CW-REV) mode with [MODE].

eSet CW break-in operation as semi break-in, fullbreak-in or OFF. (See p. 42) Push [SET] for 1 sec. to enter quick set mode.

Push [UP]/[DN] one or more times until BKIN ap-

pears, then rotate the main dial to select the desired

condition:

FL: full break-inSE: semi break-in

oF: no break-in

r Set the CW delay time when semi break-in opera-tion is selected. (See p. 43)Push [SET] for 1 sec. to enter quick set mode; push [

UP]/[ DN] one or more times until BKDELAY ap-

pears, then rotate the main dial to set the desired delay

time.

CW mode and semibreak-in operationis selected.

Delay time of 6 dotsis selected in quickset mode for semibreak-in operation.


34/62

32


CW pitch control

The received CW audio pitch and monitored CWaudio pitch can be adjusted to suit your preferences

(300 to 900 Hz) with out changing the operating fre-

quency.

q Push [SET] for 1 sec. to enter quick set mode.w Push [UP]/[DN] one or more times until CW

PITCH appears, then rotate the main dial to setthe desired pitch.

CW reverse mode

The CW-R (CW Reverse) mode receives CW signals

with a reverse side CW carrier point like that of LSBand USB modes. Use this mode when interference

signals are near the desired signal and you want tochange the interference tone.

q Push [MODE] one or more times to select CWmode.

w Push [MODE] for 1 sec. to toggle between CW andCW-R modes.

BFO

1/3 octave

Push for 1 sec.

Desired signal

(600 Hz)

CW mode (USB side)

Interference

(800 Hz)

BFO

1/2 octave

Desired signal

(600 Hz)

CW REV mode (LSB side)

Interference

(400 Hz)

MODE

Electronic CW keyer

The IC-718 has an electronic keyer. Both keyingspeed and weight (the ratio of dot : space : dash) can

be set in quick set mode.

Setting the electronic keyerq Push [MODE] one or more times to select CW

mode.

w While pushing and holding [SET], push [POWER]to enter initial set mode.

e Push [UP]/[DN] one or more times until CWPADDL appears, then rotate the main dial to select

the paddle type. When ud is selected, the up/down switches on the mi-

crophone can be use as a paddle.

When using up/down switches as a paddle, squeeze

keying function is not available.r Push [UP]/[DN] one or more times until KEY

RAT appears, then rotate the main dial to selectthe desired weight. Key weight can be select from 2.8 to 4.5.

t Push [UP]/[DN] one or more times until KEYSPD appears, then rotate the main dial to selectthe desired weight. Key weight can be select from 6 to 60.

Paddle operation from front panel MIC connectorConnect a CW paddle as at right to operate an elec-

tronic keyer from the front panel MIC connector.

This function is available from the front panel mic con-

nector only.

Be sure to select item n,r,or oF in CW PADDL in ini-tial set mode.

Connect straight key to DOT side.

This shows the

default setting forthe CW pitch control(600 Hz).

KEYING WEIGHT EXAMPLE: morse code K

*SPACE and DOT length can be adjusted with KEY SPD

in the quick set mode only.

DASH

Weight setting:

1:1:3 (default)

Weight setting:

Adjusted

DASHDOT

(Fixed*)

Adjustable range SPACE (Fixed*)

front panel

MIC connector

MIC U/DCW

paddle

DOT E

DASH

y3.9 k5%

2.2 k5% e

Paddle operation


35/62

33


s Function for RTTY

Connection for RTTY(FSK)

Rear panelTU or TNC

Personal computer

Rear panel

view

Use either the ACC or one of the two 1/8plugs.

*1Connect SQL line when required.

SQL*1

AF out

SEND

GND

FSKK

GNDAF

2-conductor 1/8plug[ACC]

[EXTS

P]

1 2 3 4

5 6 7 8

9 10 11 12

13

Connection for AFSK

To a TU or TNC

and personal computer.

Use either the ACC or microphone connector.

SQL*1

AF out

AF in

SENDGND

1 2 3 4

5 6 7 8

9 10 11 12

13

Rear panel

view

*1Connect SQL line when required.

q Mic input

[MIC] connector

(Front panel view)

1

2

34

5

6

7

8

i AF output

u Mic GND

y PTT GND

t PTT

r SQL

[ACC] connector


36/62

34


RTTY (FSK) operation

q Connect a terminal unit as at p. 34.

w Select RTTY (or RTTY-R) mode with [MODE].e Select the desired FSK tone and shift frequencies

as below.

r Set the desired frequency with the main dial.t Operate the connected PC or TNC (TU).

PRESETTING FOR RTTY

Tone frequencyq Push [SET] for 1 sec. to enter quick set mode.

w Push [UP]/[DN] one or more times until TON2125 appears, then rotate the main dial to selectthe desired tone frequency.

Sift frequency

q Push [SET] for 1 sec. to enter quick set mode.w Push [UP]/[DN] one or more times until SIFT170 appears, then rotate the main dial to select

the desired tone frequency.

RTTY reverse mode

Received characters are occasionally garbled whenthe 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.Push [MODE] for 1 sec. to select RTTY-R (RTTY re-verse) mode.

RTTY (AFSK) operation

q Connect a terminal unit as p. 33.

w Select SSB (LSB) mode with [MODE].

Generally, LSB is used on the HF bands.e Select the desired FSK tone/shift frequencies and

keying polarity the same way as FSK operation.r Set the desired frequency with the main dial.

t Operate the connected PC or TNC (TU).

RTTY mark frequencyis set to 2125 Hz.2125, 1615 and 1275Hz are available.

RTTY sift frequency isset to 850 Hz.850, 425, 200 and170 Hz are available.

RTTY modeis selected.

ReverseNormal

BFO

170Hz

2125Hz

170Hz

2125Hz

BFO

markspace

displayed freq.displayed freq.

markspace


37/62

6MEMORY OPERATION

35

s Memory channels

The transceiver has 101 memory channels.The mem-ory mode is very useful for quickly changing to often-

used frequencies.

All 101 memory channels are tuneable which meansthe programmed frequency can be tuned temporarily

with the tuning dial, etc. in memory mode.

s Memory channel selection

MEMORYCHANNEL

MEMORYCHANNELNUMBER

CAPABILITYTRANSFER

TO VFO

OVER-

WRITINGCLEAR

Regular memorychannels

199One frequency and one mode ineach memory channel.

Yes Yes Yes

Scan edgememorychannels

P1, P2One frequency and one mode ineach memory channel as scanedges for programmed scan.

Yes Yes No

DUsing the [UPY] or [ZDN] keys

q Push [V/M] to select memory mode. MEMO appears.

w Push [CH] to enter memory CH select mode. MEMO blinks.

e Push [UPY] or [ZDN] several times to select thedesired memory channel.Push and hold [UPY] or [ZDN] for continuous selec-

tion.

r Push [CH] to exit memory CH select mode.

t To return to VFO mode, push [V/M] again.

DUsing the keypad

q Push [V/M] to select memory mode. MEMO appears.

w Push [CH] to enter memory CH select mode. MEMO blinks.

e Push [F-INP/ENT], then push the desired memorychannel number using the keypad.

r Push [F-INP/ENT] to select the desired memorychannel.

t Push [CH] to exit memory CH select mode.

V/M 1

UPDN or

CH

CH

V/M 1

CH

ENTF-INP

V/M 1 A=B2

CH

ENTF-INP


38/62

6 MEMORY OPERATION

36

Memory channel programming can be performed ei-

ther in VFO mode or in memory mode.

s Memory channel programming

DProgramming in memory mode

q Select the desired memory channel with [UPY] or[ZDN] in memory mode. BLANK appears if the selected memory channel is a

blank channel (and does not have contents).

w Set the desired frequency and operating mode inmemory mode.To program a blank channel, use direct frequency entry

with the keypad in advance.

e Push [MW] for 1 sec. to program the displayed fre-quency and operating mode into the memorychannel.Preamp setting, attenuator on/off,and AGC setting can

also be programmed into a memory channel.

[EXAMPLE]: Programming 21.280 MHz/CW intomemory channel 18.

DProgramming in VFO mode

q Set the desired frequency and operating mode in

VFO mode.w Push [CH], then push [UPY] or [ZDN] several

times to select the desired memory channel. MEMO blinks.

BLANK appears if the selected memory channel is a

blank channel.

e Push [MW] for 1 sec. to program the displayed fre-

quency and operating mode into the memorychannel.

r Push [CH] to exit memory channel select mode.

[EXAMPLE]: Programming 7.086 MHz/LSB intomemory channel 10.

CH

or keypad

Push for 1 sec.

Beep

Beep

Beep

MW4

MODE

orDN UP

CH

CH

ENTF-INP

V/M 1

[2], [1], [.], [2], [8]

Push for 1 sec.

Beep

Beep

Beep

MW4

orDN UP

CH then

ENTF-INP


39/62

6MEMORY OPERATION

37

s Frequency transferringThe frequency and operating mode in a memory chan-

nel can be transferred to the VFO.

Frequency transferring can be performed in either VFO

mode or memory mode.

DTransferring in VFO modeThis is useful for transferring programmed contents toVFO.

q Select VFO mode with [V/M].

w Push [CH], then select the memory channel to betransferred with [UPY] or [ZDN]. BLANK appears if the selected memory channel is a

blank channel.

e Push [MV] for 1 sec. to transfer the frequency andoperating mode.Transferred frequency and operating mode appear on

the frequency readout.r Push [CH] to exit memory channel select mode.

TRANSFERRING EXAMPLE IN VFO MODEOperating frequency : 21.320 MHz/USB (VFO)

Contents of M-ch 12 : 14.180 MHz/CW

UPDN or

CH

Push for 1 sec.

Beep

Beep

Beep

MV6

CH


40/62

6 MEMORY OPERATION

38

s Memory clearing

Any unnecessary memory channels can be cleared.The cleared memory channels become blank chan-nels.

q Select memory mode with [V/M].

w Push [CH], then select the memory channel to becleared with [UPY] or [ZDN].

e Push [M-CL] for 1 sec. to clear the contents.The programmed frequency and operating mode dis-

appear.

BLANK appears.r To clear other memory channels, repeat steps w

and e.

Push for 1 sec.

Beep

Beep

Beep

M-CL 5

DTransferring in memory modeThis is useful for transferring frequency and operating

mode while operating in memory mode.

When you have changed the frequency or operat-ing mode in the selected memory channel:Displayed frequency and mode are transferred.

Programmed frequency and mode in the mem-ory channel are not transferred, and they remain

in the memory channel.

q Push [CH], then select the memory channel to betransferred with [UPY] or [ZDN] in memory mode.And, set the frequency or operating mode if required.

w Push [MV] for 1 sec. to transfer the frequency and

operating mode.Displayed frequency and operating mode are trans-

ferred to the VFO.e To return to VFO mode, push [V/M] momentarily.

TRANSFERRING EXAMPLE IN MEMORY MODEOperating frequency : 14.020 MHz/CW (M-ch 16)

Contents of M-ch 16 : 14.018 MHz/CW

Push for 1 sec.

Beep

Beep

Beep

M V 6

V/M 1

V/M 1

Rotate dial.

VFO A is displayed.VFO A is displayed.

M-ch 16 is displayed.


41/62

SCANS 7

39

s Scan types

s PreparationChannelsFor programmed scan/auto memory write scan:Program scan edge frequencies into scan edge mem-ory channels P1 and P2.

For memory scan:

Program 2 or more memory channels except scanedge memory channels.

Scan resume ON/OFFYou can select the scan to resume or cancel when de-

tecting a signal, in set mode. Scan resume ON/OFFmust be set before operating a scan. See p. 45 forON/OFF setting and scan resume condition details.

Scan speedScan speed can be selected from 2 levels, high or low,in Initial set mode. See p. 45 for details.

Squelch condition

PROGRAMMED SCAN

Repeatedly scans between two scan edge frequencies

(scan edge memory channels P1 and P2).

This scan operates in VFO mode.

Scan

Scan edgeP1 or P2

Scan edgeP2 or P1

Jump

This scan operates in memory mode.

MEMORY SCAN

Repeatedly scans all programmed memory channels.

Mch 5

Mch 2 Mch 3 Mch 4

Mch 6Mch 7

BLANK

BLANK

Mch 1

Mch 99

Scanstartwith

Programmed scan Memory scan

Squelchopen

The scan continuesuntil it is stopped man-ually, and does notpause even if it detectssignals.

Scan pauses oneach channel whenthe scan resume isON; not applicablewhen OFF.

Squelchopen

closed

Scan stops when detecting a signal.

If you set scan resume ON in Initial set mode,the scan pauses for 10 sec. when detecting asignal, then resumes. When a signal disap-

pears while scan is paused, scan resumes 2sec. later.


42/62

7 SCANS

40

s Programmed scan operation

q Select VFO mode with [V/M].

w Select the desired operating mode.

The operating mode can also be changed while scan-ning.

e Set [RF/SQL] open or closed.See previous page for scan condition.

If the [RF/SQL] control function is set as RF control, the

squelch always opens. See pgs. 15, 20 for details.

r Push [SCAN] to start the programmed scan. SCAN appears while scanning.

t When the scan detects a signal, the scan stops,

pauses or ignores it depending on the resume set-ting and the squelch condition.

y To cancel the scan, push [SCAN].

If the same frequencies are programmed into the

scan edge memory channel P1 and P2, pro-grammed scan does not start.

s Memory scan operation

q Select memory mode with [V/M].

w Select the desired operating mode.The operating mode can also be changed while scan-

ning.

e Set [RF/SQL] open or closed.See previous page for scan condition. If the [RF/SQL] control function is set as RF control, the

squelch always opens. See pgs. 14, 30 for details.

r Push [SCAN] to start the memory scan. SCAN appears while scanning.

t When the scan detects a signal, the scan stops,

pauses or ignores it depending on the resume set-ting and the squelch condition.

y To cancel the scan, push [SCAN].

2 or more memory channels must be programmed

for memory scan to start.


43/62

8

41

SET MODE

s General

Set mode is used for programming infrequentlychanged values or conditions of functions. The IC-718

has 2 separate set modes: quick set modeand initialset mode.

DQuick set mode operationq While power is ON, push [SET] for 1 sec.

Quick set mode is selected and one of its items appears.

w Push [UPY] or [ZDN] to select the desired item.

e Rotate the main dial to set the values or conditions

for the selected item.r Repeat w and e to set other items.

t To exit quick set mode, push [SET] momentarily.

D Initial set mode operationq Push [POWER] for 1 sec. to turn power OFF.w While pushing and holding [SET], push [POWER] to

turn power ON. Initial set mode is selected and one of its items appears.

e Push [UPY] or [ZDN] to select the desired item.r Rotate the main dial to set the values or conditions

for the selected item.t Repeat e and r to set other items.

y To exit initial set mode, push [PWR] for 1 sec. to turnpower OFF.

u Push [PWR] to turn power ON again. The conditions selection in intial set mode are now ef-

fective.

Item

Value ofCondition

Item

Value ofCondition

[DISPLAY EXAMPLE: INITIAL SET MODE]

[DISPLAY EXAMPLE: QUICK SET MODE]

[DIAL]

[] []

[SET]

[DIAL]

[PWR]

[] []

[SET]


44/62

42

8 SET MODE

RF powerThis item adjusts the RF output power. The RF outputpower can be adjusted from L, 1 to 99 and H for indication,however, it can be adjusted continuously.The default is H (maximum power).

Note that while adjusting the output power, the power meteris displayed automatically.

Mic gainThis item adjusts microphone gain from 0 to 99 and H forindication, however, it can be adjusted continuously.

The default is 50.

VOX gainThis item adjusts the VOX gain for the VOX (voice activatedtransmit) function.

The default is 50.

Anti VOX levelThis item adjusts the ANTI-VOX gain for the VOX (voice ac-

tivated transmit).The default is 50.

CW pitchThis item adjusts CW pitch. CW pitch is adjustable from300 Hz to 900 Hz in 10 Hz steps.The default is 60 (600 Hz).

VOX delay

This item adjusts VOX (voice activated transmit) delay time.The delay time can be adjusted from 0 to 2 sec. in 0.1 sec.

units.The default is 10 (1.0 sec).

s Quick set mode items

BK-INThis item selects break-in type for CW operation.There are

three selectable values:oFF: No break-in operation available (default).

SE : Semi break-in operation available.FL : Full break-in operation available.


45/62

8SET MODE

43

BK-IN delayThis item adjusts break-in delay time for CW semi break-inoperation. The delay time is selectable from 2.0 to 13

(dots).

The default is 7.

Key speedThis item adjusts the CW key speed. The key speed can

be selected from 6 to 60* wpm.The default is 20 wpm.* 40, 44, 47, 50, 52, 54, 56, 57, 59 can not be selected.

Key ratio

This item sets the CW key ratio (or weight). The ratio canbe selected from 2.8 to 4.5.The default is 30 (3.0).

RTTY shiftThis item adjusts RTTY shift.There are 4 selectable values:

170, 200, 425 and 850.The default is 170 Hz.

DimmerThis item selects LCD back light brightness.There are 3 se-

lectable values: Off, Low and High.The default is HI (High).

RTTY mark toneThis item selects RTTY tone.There are 3 selectable values:

1275, 1615 and 2125 Hz.The default is 2125 Hz.


46/62


47/62

8SET MODE

45

Meter peak holdThis item selects meter peak hold function on or off.The default is on.

Scan resumeThis item sets the scan resume function ON or OFF.ON: scan resumes 10 sec. after stopping on a signal (or 2sec. after a signal disappears); OFF: scan soes not resumeafter stopping on a signal. For the priority watch, setting to

OFF pauses the watch until the signal disappears and scanresumes.

The default is on.

AM Noise blankerWhen this item is set to ON, the noise blanker function isavailable on AM mode. This is useful when communicating

in AM mode (the noise blanker function should not be usedwhen listening to regular AM broadcasts as it may degradethe receive audio).

The default is on.

Auto TSThis item sets auto tuning speed. The tuning dial normally

changes the frequency 2.5 KHz/revolution in 10 Hz tuningstep. When auto tuning step is turned on this increases to50 KHz/revolution in 50 Hz tuning step during quick rota-

tion of the dial.

The default is on.

Scan speedThis item sets the rate at which channels or frequencies arescanned during scan operations. High or Low can be se-

lected.The default is HI (High).

Key typeThis item adjusts the CW paddle type. Four selections areavailable.

n : normal (for electronic keyer use) r : reverse (for electronic keyer use)

oF : Turns OFF the electronic keyer (for straight key use)ud : For using the microphones [UP]/[DN] keys insted of

the paddle.The default is n (normal).


48/62

8 SET MODE

46

Tuner typeThis item selects optional antenna tuner type.Three selec-tions are available.

no : No optional tuner connected.

4 :The optional AH-4 antenna tuner is connected.18 :The optional AT-180 antenna tuner is connectedThe default is no.

Auto tuneThe optional AT-180 ANTENNA TUNER has an automatic startcapability which starts tuning if the SWR is higher than

1.53.When off is selected, the tuner remains OFF even whenthe SWR is poor (1.53).When on is selected, automatic

tune starts even when the tuner is turned OFF.

The default is oF (OFF).

PTT tuneWhen an optional AH-4 or AT-180 AUTOMATIC ANTENNATUNER is connected, tuning can be started automatically at

the moment the PTT is pushed.The default is oF (OFF).

Speech languageWhen an optional UT-102 VOICE SYNTHESIZER UNIT is in-

stalled, you can select between English and Japanese asthe language.The default is En (English).

Speech speedWhen an optional UT-102 VOICE SYNTHESIZER UNIT is in-

stalled, you can select faster or slower synthesizer output.The default is HI (High).

Speech S-meter levelWhen an optional UT-102 is installed, the synthesizer canbe set to read the frequency/mode only (OFF), or both thefrequency/mode and S-meter level (ON).The default is on.

CI-V baud rateThis item sets the data transfer rate. When Auto is se-

lected, the baud rate is automatically set according to theconnected controller or remote controller.

The default is At (Auto).


49/62

8SET MODE

47

CI-V addressTo distinguish equipment, each CI-V transceiver has its ownIcom standard address in hexadecimal code.The IC-718s

address is 5E.

When 2 or more IC-718s are connected to an optional CT-17 CI-V LEVEL CONVERTER, rotate the main dial to select adifferent address for each IC-718 in the range 01H to 7FH.

The default is 5E.

CI-V TransceiveTransceive operation is possible with the IC-718 connected

to other Icom HF transceivers or receivers.When onis se-lected, changing the frequency, operating mode, etc. on theIC-718 automatically changes those of connected trans-

ceivers (or receivers) and vice versa.

The default is on.

CI-V 731 modeWhen connecting the IC-718 to the IC-735 for transceive

operation, you must change the operating frequency datato 4 bytes.This item MUST be set to on when operating tr

icom ic 718 instruction manual

Documents