Ic 718

Manual-Icom-IC-718 Manual-Icom-IC-718

ICOM--IC-718-user-manual ICOM--IC-718-user-manual

User Manual: ic-718

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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.

IMPORTANT

READ THIS INSTRUCTION MANUAL

CAREFULLY before attempting to operate the

transceiver.

SAVE THIS INSTRUCTION MANUAL. This

manual 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 (EMC

product standard for Commercially Available Amateur

Radio Equipment).

WORD

WARNING

CAUTION

NOTE

DEFINITION

Personal injury, fire hazard or electric

shock may occur.

Inconvenience only.

No risk of personal injury, fire or

electric shock.

Equipment damage may occur.

RWARNING HIGH VOLTAGE! NEVER attach

an 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 the

transceiver rear panel. This could cause a ﬁre or ruin

the transceiver.

RNEVER 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.

RNEVER 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.

NEVER expose the transceiver to rain, snow or any

liquids.

AVOID using or placing the transceiver in areas with

temperatures below –10°C (+14°F) or above +60°C

(+140°F). Be aware that temperatures on a vehicle’s

dashboard can exceed 80°C (+176°F), resulting in per-

manent damage to the transceiver if left there for ex-

tended periods.

AVOID placing the transceiver in excessively dusty en-

vironments or in direct sunlight.

AVOID placing the transceiver against walls or putting

anything on top of the transceiver. This will obstruct

heat dissipation.

During mobile operation, DO NOT operate the trans-

ceiver without running the vehicle’s engine. When

transceiver power is ON and your vehicle’s engine is

OFF, the vehicle’s battery will soon become 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 transceiver

and 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 transceiver’s RF output power to less than the lin-

ear ampliﬁer’s maximum input level, otherwise, the lin-

ear ampliﬁer will be damaged.

Use Icom microphones only (supplied or optional).

Other manufacturer’s microphones have different pin

assignments, and connection to the IC-718 may dam-

age the transceiver.

TABLE OF CONTENTS

The transceiver comes with the following accessories.

Qty.

qDC power cable .................................................... 1

wHand microphone (HM-36) .................................. 1

eFuse (FGB 20 A; for DC cable) ............................ 1

rFuse (FGB 4 A; internal use) ............................... 1

SUPPLIED ACCESSORIES

IMPORTANT .............................................................. i

EXPLICIT DEFINITIONS ........................................... i

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

1 TABLE OF CONTENTS ....................................... 1

SUPPLIED ACCESSORIES ..................................... 1

2 PANEL DESCRIPTION ................................... 2–8

■Front panel ........................................................ 2

■Function display ................................................. 5

■Rear panel ......................................................... 6

■Microphone (HM-36) ......................................... 8

3 INSTALLATION AND CONNECTIONS ......... 9–14

■Unpacking .......................................................... 9

■Selecting a location ........................................... 9

■Grounding .......................................................... 9

■Antenna connection ........................................... 9

■Required connections ...................................... 10

■Advanced connections .................................... 11

■Power supply connections ............................... 12

■Liner ampliﬁer connections .............................. 13

■External antenna tuners .................................. 14

4 FREQUENCY SETTING .............................. 15–19

■When ﬁrst applying power ............................... 15

■Initial setting .................................................... 15

■VFO description ............................................... 16

■Frequency setting ............................................ 17

■Dial lock function ............................................. 19

5 RECEIVE AND TRANSMIT ......................... 20–34

■Mode selection ................................................ 20

■Squelch and RF gain ....................................... 20

■Function for receive ......................................... 21

■DSP function (option) ...................................... 23

■Filter selection ................................................. 24

■Filter setting ..................................................... 25

■Function for transmit ........................................ 26

■Split frequency operation ................................. 30

■SWR ................................................................ 30

■Function for CW ............................................... 31

■Function for RTTY ........................................... 33

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

■Memory channels ............................................ 35

■Memory channel selection ............................... 35

■Memory channel programming ........................ 36

■Frequency transferring .................................... 37

■Memory clearing .............................................. 38

7 SCANS ........................................................ 39–40

■Scan types ....................................................... 39

■Preparation ...................................................... 39

■Programmed scan operation ........................... 40

■Memory scan operation ................................... 40

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

■General ............................................................ 41

■Quick set mode items ................................. 42-43

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

9 INSTALLATION AND CONNECTIONS ....... 48–51

■Opening the transceiver’s case ....................... 48

■Optional bracket and carrying handle............... 48

■CR-338 HIGH STABILITY CRYSTAL UNIT .......... 49

■UT-102 VOICE SYNTHESIZER UNIT .................. 49

■UT-106 DSP RECEIVE UNIT .............................. 50

■Optional IF ﬁlters ............................................. 50

■AT-180 internal switch description ................... 51

10 MAINTENANCE ........................................ 52–53

■Troubleshooting ............................................... 52

■Fuse replacement ............................................ 53

■Resetting the CPU ........................................... 53

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

12 OPTIONS .................................................. 55–56

13 CONTROL COMMAND ............................ 57–58

■Remote jack (CI-V) information ....................... 57

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

■Top view ........................................................... 59

■Bottom view ..................................................... 59

■Front panel

qPOWER 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)

wMICROPHONE CONNECTOR [MIC]

Accepts supplied or optional microphone.

•See p. 55 for appropriate microphones.

•See p. 8 for microphone connector information.

eHEADPHONE JACK [PHONES] (p. 11)

Accepts headphones (8Ω).

•When headphones are connected, the internal speaker

or connected external speaker does not function.

rAF CONTROL [AF] (inner control)

Varies the audio output level from the speaker.

tRF 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.

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

➥Shifts the receive frequency without changing the

transmit 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.

uIF SHIFT CONTROLS [SHIFT] (Outer control; p.

21)

Shifts the center frequency of the receivers’s IF

pass-band.

•Rotate the control colckwise to shift the center frequency

higher, or rotate the control counterclockwise to shift the

center frequency lower.

iLOCK 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).

oMAIN DIAL

Changes 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.

PANEL DESCRIPTION

MIC

IC-718

PHONES

RF/SQL AF SHIFT RIT

LOCK

MODE

FIL

PWR

TUNER

COMP

P.AMP

ATT

SET

ENT

F-INP

V/M

A=B

M-CL

SCN

ANF

A/B

VOX

SPL

M V

▲



√∫

Speaker Function Display @1 @0 !9 !7

PANEL 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/DOWN

SWITCHES [√√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 items

while 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 [CCOOMMPP](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], [M≈V], [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 that

generated by automobile ignition systems. This

function is not effective against non pulse-type

noise.

➥Push [NB] for 1 sec to enter the noise blanker

level 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 1

Hz 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.

2PANEL DESCRIPTION

■Front panel (continued)

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

➥Toggles the operating mode between VFO mode

or memory mode when pushed.

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

➥Stores the displayed frequency and operating

mode into the selected memory channel when

pushed for 1 sec.

@4 SPLIT SWITCH/7 [SPL•7] (p. 30)

Turns the split frequency operation ON or OFF

when pushed.

@5 NR SWITCH/. [NR• .](p. 23)

➥Toggles the optional noise reduction function ON

or 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 when

pushed for 1 sec.

@6 ANF SWITCH/0 [ANF•0] (p. 23)

Toggles the Automatic Notch Filter function ON or

OFF. 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 [SCAN•8] (p. 39)

➥Push momentarily to start/stop the programmed

scan in VFO mode.

➥Push momentarily to start/stop the memory scan

in memory mode.

@9 VOX SWITCH/9 [VOX•9] (p. 27)

➥Turn the VOX function ON or OFF when pushed

in SSB modes.

#0 M≈≈V SWITCH/6 [MV•6] (p. 37)

➥Transfers the memory contents to VFO when

pushed for 1 sec.

#1 MEMORY CLEAR SWITCH/5 [M=CL•5] (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/B•3] (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=B•2]

Equalize the frequency and operating mode of the

two VFO’s.

•The VFO B frequency and operating mode are equal-

ized with the VFO A frequency and operating mode.

ENT

F-INP

V/M

A=B

M=CL

SCN

ANF

A/B

VOX

SPL

M V

▲

#3 #2

MODE

FILTER

TUNER

COMP

P.AMP

ATT

SET

ENT

F-INP

V/M

A=B

M=CL

SCN

ANF

A/B

VOX

SPL

M V

▲

√∫

■Function display

qLOCK INDICATOR (p. 19)

Appears when the dial lock function is in use.

wRECEIVE INDICATOR

Appears while receiving a signal or when the

squelch is open.

eTUNE INDICATOR

Appears while the automatic tuning function is acti-

vated.

rTRANSMIT INDICATOR

Appears while transmitting.

tFUNCTION INDICATORS

➥“P.AMP”appears when antenna preamp is in use.

➥“ATT”appears when the attenuator function is in

use.

➥“NB”appears when the Noise Blanker function is

turned ON.

➥“BK”appears when the semi break-in function is

selected 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.

yDSP UNIT INDICATOR (p. 49)

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

stalled.

uAUTOMATIC NOTCH FILTER INDICATOR (p. 23)

Appears when the optional Automatic Notch Filter

function is in use.

iNOISE REDUCTION INDICATOR (p. 23)

Appears when the optional Noise Reduction func-

tion is in use.

oSIGNAL/SQL/RF-GAIN METER

➥Functions as an S-meter while receiving.

➥Functions as a Power, ALC or SWR meter while

transmitting. (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 in

use.

!4 RIT INDICATOR (p. 21)

Appears when the RIT function is in use.

!5 FREQUENCY READOUT

Shows the operating frequency.

!6 REVERSE INDICATOR (p.19)

Appears when the CW reverse or RTTY reverse

mode 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.

PANEL DESCRIPTION

!9 !6

o!1!0

2PANEL DESCRIPTION

■Rear panel

qANTENNA TERMINAL [ANT] (p. 10)

Connects a 50 Ωantenna with a PL-259 connector

and a 50 Ωcoaxial cable.

wDC POWER SOCKET [DC 13.8V] (p. 12)

Accepts 13.8V DC through the supplied DC power

cable.

eTUNER CONTROL SOCKET [TUNER] (p. 14)

Accepts the control cable from an optional AH-4 AU-

TOMATIC ANTENNA TUNER.

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

Designed for use with a personal computer for re-

mote operation of transceiver functions.

tEXTERNAL SPEAKER JACK [EXT SP] (p. 11)

Connects an 8 Ωexternal speaker, if desired.

•When an external speaker is connected, the internal

speaker does not function.

yACCESSORY SOCKET [ACC] (p. 7)

Enables connection to external equipment such as

an optional AT-180 AUTOMATIC ANTENNA TUNER, a

TNC for data communications or a liner amplifier,

etc.

uELECTRONIC KEYER JACK [KEY]

Accepts a paddle to activate the internal electronic

keyer.

•Selection between the internal electronic keyer and

straight key operation can be made in initial set mode.

iALC INPUT JACK [ALC]

Connects to the ALC output jack of a non-Icom lin-

ear ampliﬁer.

oSEND 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.

qwe

rtyuio!0

1234

8765

10 11 12

Rear panel view

When connecting

a straight key

When connecting

a paddle

(dot)

(com)

(dash)

(⊕)

PANEL DESCRIPTION

DDACC SOCKET INFORMATION

• ACC socket

•When connecting the ACC conversion cable (OPC-599)

ACC PIN # NAME DESCRIPTION SPECIFICATIONS COLOR

18 V Regulated 8 V output. Output voltage :8 V ±0.3 V

Output 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 V

Input current :Less than 20 mA orange

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

5 BAND Band voltage output.

(Varies with amateur band) Output voltage :0 to 8.0 V green

6 ALC ALC voltage input. Control voltage :–4 to 0 V

Input impedance :More than 10 kΩblue

7 NC purple

813.8 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 kΩ

Input level :Approx. 100 mV

rms pink

12 AF AF detector output.

Fixed, regardless of [AF] position. Output impedance :4.7 kΩ

Output level :100 to 300 mV rms light

blue

13 SQLS Squelch output.

Goes to ground when squelch opens. SQL open :Less than 0.3 V/5 mA

SQL closed :More than 6.0 V/100 µAlight

green

Rear panel

view

1234

8765

10 11 12

ACC 1

ACC 2

➀ FSKK ➄ AF

➁ GND ➅ SQLS

➂ SEND ➆ 13.8 V

➃ MOD ➇ ALC

➀ 8 V ➄ ALC

➁ GND ➅ NC

➂ SEND ➆ 13.8 V

➃ BAND

10 11 12

2PANEL DESCRIPTION

■Microphone (HM-36)

qUP/DOWN SWITCHES [UP]/[DN]

Change the selected readout frequency or memory

channel.

•Continuous pushing changes the frequency or memory

channel number continuously.

•The [UP]/[DN] switch can simulate a key paddle. Preset

in the CW PADDL in initial set mode. (p. 31)

wPTT SWITCH

Push and hold to transmit; release to receive.

•MICROPHONE CONNECTOR

(Front view)

CAUTION: DO NOT short pin 2 to ground as this

can damage the internal 8 V regulator.

y GND (PTT ground)

t PTT

r Main readout squelch switch

q Microphone input

w +8 V DC output

e Frequency up/down

u GND

(Microphone ground)

i Main readout AF output

(varies with [AF]/[BAL])

Max. 10 mA

Ground

Ground through 470 Ω

“LOW” level

“HIGH” level

+8 V DC output

Frequency up

Frequency down

Squelch open

Squelch closed

[MIC]

PIN NO.

FUNCTION DESCRIPTION

•HM-36 SCHEMATIC DIAGRAM

ert

4700p

10µ

0.33µ

MICROPHONE

MIC

ELEMENT

470

DOWN UP

PTT RECEIVE

TRANSMIT

MICROPHONE CABLE MICROPHONE PLUG

INSTALLATION AND CONNECTIONS

■Unpacking

After unpacking, immediately report any damage to the

delivering 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.

■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 for

desktop use. Set the stand to one of two angles de-

pending on your operating conditions.

■Grounding

To prevent electrical shock, television interference

(TVI), broadcast interference (BCI) and other prob-

lems, ground the transceiver through the GROUND

terminal on the rear panel.

For best results, connect a heavy gauge wire or strap

to 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.

■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 Ωantenna,

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.

CAUTION: Protect your transceiver from lightning

by using a lightning arrestor.

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 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 antenna

tuner. The IC-718 has an SWR meter to monitor the

antenna SWR continuously.

PL-259 CONNECTOR INSTALLATION EXAMPLE

30 mm ≈9⁄8in 10 mm ≈3⁄8in 1–2 mm ≈1⁄16 in

30 mm

10 mm (soft solder)

10 mm

1–2 mm

solder solder

Soft

solder

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.

3INSTALLATION AND CONNECTIONS

■Required connections

MIC

IC-718

PHONES

RF/SQL AF SHIFT RIT

LOCK

MODE

FIL

PWR

TUNER

√

∫

COMP

P.AMP

ATT

SET

ENT

F-INP

V/M

A=B

M-CL

SCN

ANF

A/B

VOX

SPL

M V

▲



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]: 1.8–30 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. 24.5 m; 80.3 ft

AH-710

•Front panel

•Rear panel

INSTALLATION AND CONNECTIONS

■Advanced connections

MIC

IC-718

PHONES

RF/SQL AF SHIFT RIT

LOCK

MODE

FIL

PWR

TUNER

∫

COMP

P.AMP

ATT

SET

ENT

F-INP

V/M

A=B

M-CL

SCN

ANF

A/B

VOX

SPL

M V

∫

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

3INSTALLATION AND CONNECTIONS

■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 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.

Red : positive +terminal

Black : negative _terminal

CONNECTING A VEHICLE BATTERY

12 V

battery Supplied

DC power cable

+ red

_ black Crimp

Solder

Grommet

Fuses

NEVER connect to

a 24 V battery.

NOTE: Use terminals for

the cable connections.

CONNECTING NON-ICOM DC POWER SUPPLY

1234

8765

10 11 12

DC power

socket

DC power supply AC outlet

AC cable

20 A fuses

Supplied

DC power cable

13.8 V 20 A

black red

CONNECTING PS-85 DC POWER SUPPLY

1234

8765

10 11 12

PS-85

Connect to an AC outlet

using the supplied AC cable.

DC power cable

DC power

socket

NEVER connect to a battery without supplied DC fuses,

otherwise the ﬁre hazard may occur.

INSTALLATION AND CONNECTIONS

■Linear ampliﬁer connections

CONNECTING THE IC-PW1

1234

8765

10 11 12

ANT

ACC-1

ACC REMOTE

REMOTE

INPUT1

GND

IC-PW1

IC-718

Ground

AC outlet

(Non-European versions : 100–120/220–240 V

European 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 an

antenna

EXCITER

1 1&2

OPC-599 conversion cable

(option)

CONNECTING THE IC-4KL

1234

8765

10 11 12

IC-718

Ground

IC-4KL

Remote

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 (220–240 V)

To an

antenna

ANT

ACC

OPC599 conversion cable

(option)

CONNECTING THE AT-180 (p. 28)

DO NOT! connect AT-180 and AH-4 at the same

time. Both tuners will not function correctly.

Turn the IC-718’s power OFF when connecting the

AT-180, otherwise, the CPU may malfunction and

the AT-180 may not function properly.

3INSTALLATION AND CONNECTIONS

■External antenna tuners

CONNECTING A NON-ICOM LINER AMPLIFIER

RWARNING:

Set the transceiver output

power and linear amplifier

ALC output level referring to

the linear ampliﬁer instruction

manual.

The ALC input level must be

in the range 0 V to –4 V, and

the transceiver does not ac-

cept positive voltage. Non-

matched ALC and RF power

settings could cause a ﬁre or

ruin the linear ampliﬁer.

1234

8765

10 11 12

RF OUTPUT RF INPUT

ALC

SEND

50 Ω coaxial cable

IC-718

ANT

ALC

SEND

To an

antenna

Non-Icom linear amplifier

The speciﬁcations for the SEND relay are 16 V DC

2 A. If this level is exceeded, a large external relay

must 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

1234

8765

10 11 12

Ground

antenna

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

ACC cable supplied with the AT-180

Coaxial cable supplied

with the AT-180

IC-718

one of two

connectors

FREQUENCY SETTING

■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 using

the following procedure.

Resetting CLEARS all programmed contents in

memory channels and returns programmed values

in quick/initial set mode to default values.

qMake sure the transceiver power is OFF.

wWhile 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.

eAll quick/initial set mode settings are returned to

default values. (p. 41)

■Initial settings

After resetting the transceiver, set controls and

switches 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 “▼”: Push [TS].

•1 Hz frequency readout : Push [TS] for 1 sec.

(while quick tuning

step is OFF)

•RIT indicator “ ”: Center.

•Split indicator “ ”: Push [SPL].

RITRIT

Under cooler temperatures, the LCD may appear

dark and unstable after turning power ON. This is

normal and does not indicate any equipment mal-

function.

CCW : counterclockwise

4FREQUENCY SETTING

■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] switch

or 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. If

the frequency or operating mode is changed, the VFO

automatically memorizes the new frequency or new

operating mode.

When the VFO is selected from another VFO or mem-

ory mode, the last-used frequency and operating

mode 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 memorize

the 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 and

memorized frequency (14.100 MHz) appears instead.

Changed frequency (14.123 MHz) appears.

DDirect frequency entry with keypad

The transceiver has a keypad for direct frequency

entry as described below.

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

the keypad to enter the MHz digits for the desired

frequency.

•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.

wPush [•] on the keypad.

ePush 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.

rPush [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.

FREQUENCY SETTING

DUsing the tuning dial

qPush [∫UP] or [√DN] one or more times to

select the desired ham band.

wSelect the desired operating mode with the mode

switch. (p. 20).

eRotate the tuning dial to set the desired frequency

•For general coverage receiver use

The IC-718 has a general coverage receiver band.

qPush [∫UP] or [√DN] one or more times to select

the 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 be

emitted (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

ENT

F-INP

V/M

NR ANF

A=B

M=CL

5ENT

F-INP

A=B

SPL

ANF

M V

▲

ENT

F-INP

ANF

ENT

F-INP

SPL

ENT

F-INP

SCN

M=CL

■Frequency setting

[EXAMPLE]

4FREQUENCY SETTING

DBand selection

All HF ham bands and a general coverage receiver

band 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 as

the General coverage frequency, then the General

coverage band automatically positions itself between

3.5 MHz and 7 MHz band.

DProgrammable tuning steps

Programmable tuning steps are available to suit your

operating requirements.

These tuning steps are:

•Selectable from 0.1, 1, 5, 9, 10, 100 kHz

qPush [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.

wPush [TS] for 2 sec. while the programmable tun-

ing step indicator appears to enter the tuning step

set mode.

eRotate the tuning dial to set the desired tuning

step.

rPush [TS] to exit the tuning step set mode.

tRotate the tuning dial to change the frequency ac-

cording to the set tuning step.

Programmable tuning

step indicator

10 KHz tuning steps is

selected.

√

UP∫

General (new)

General (old)

DBand stacking resister

The band stacking register automatically stores the

last frequency and mode used for each band. This is

convenient 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

FREQUENCY SETTING

10 Hz tuning

1 Hz tuning

momentarily

1 sec.1 sec.

1 sec.

Programmable step tuning

(100 Hz –100 kHz)

Selectable for each mode.

momentarily

[TS] SWITCH FLOW CHART

■Dial lock function

The dial lock function prevents accidental changes

caused 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 steps

When the programmable tuning step, “",”disappear,

rotating the tuning dial changes the frequency in in-

crements of 1 or 10 Hz.

qPush [TS] one or more times until the programma-

ble tuning step indicator “"”disappears.

wPush [TS] for 1 sec. to toggle between the 1 and

10 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.

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.

■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 desired

operation mode.

➥Push [MODE] for 1 sec. to toggle between USB

and LSB. (SSB mode only)

➥Push [MODE] for 1 sec. to toggle between CW and

CW reverse or RTTY and RTTY reverse. (CW and

RTTY mode only)

•The selected mode is indicated in the function display.

Note: If desired mode cannot be selected, it’s use

may inhibited by initial set mode. (p. 44)

OPERATING MODE SELECTION

Push

momentarily

Push

for 1 sec.

USB LSB

CW CW

RTTY RTTY

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 on

the 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) gain is used to adjust the

receiver 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

o’clock 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 adjustable

range

Maximum RF gain

Squelch is open. S-meter squelch

S-meter squelch

threshold

Shallow Deep

Squelch is open.

S-meter squelch

threshold

•When set as the [SQL] control

•When set as the [RF] control

■RF gain and Squelch

RECEIVE AND TRANSMIT

■Function for receive

The IF shift function electronically narrows the pass-

band frequency of the IF (intermediate frequency)

and cuts out higher or lower frequency components

of the IF to reject interference. The function shifts the

IF frequency up to ±1.2 KHz in SSB/CW/RTTY

modes and up ±250 Hz in CW-narrow/RTTY narrow

modes.The IF shift is not available in AM mode.

IF SHIFT OPERATION EXAMPLE

•Adjust the [SHIFT] control for a minimum interfer-

ence signal level.

•When IF shift is used, the audio tone may be

changed.

•Set the IF shift control to its center position when

there is no interference.

SHIFT SHIFT

SHIFT

IF center frequency

Interference

Desired signal

Passband

Both controls at

center position Cutting a lower

passband Cutting higher

passbands

Interference

Desired signal

Passband

ïIF shift function

ïRIT function

The RIT (Receive Incremental Tuning) function com-

pensates for off-frequencies of communicating sta-

tions. The function shifts the receive frequency up to

1.2 KHz without moving the transmit frequency.

qRotate the RIT control to cancel the off-frequen-

cies.

•“ ”appears on the display.

•The transmit frequencies are not shifted.

wTo cancel the RIT func-

tion, rotate the RIT con-

trol to the center

position.

•“ ”disappears.

RIT off position

ïPreamp

The preamp amplifies received signals in the front

end circuit to improve the S/N ratio and sensitivity.

Turn this function ON when receiving weak signals.

➥Push [P.AMP] to toggle between preamp or turn

the preamp OFF.

•Preamp functions below 1.59999 MHz, but sensitivity

may reduce in some cases.

Appears when the

preamp ON.

5RECEIVE AND TRANSMIT

ïAttenuator

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 as

from 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.

ïPeak 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 set

mode (p. 45).

Initial reception of a signal

results in an S-meter reading

of 40 dB.

The highest indicated bar

remains displayed for 0.5 sec.

even when the signal strength

decreases.

ïNoise blanker

The noise blanker reduces pulse-type noise such as

that generated by automobile ignition systems.

qPush the [NB] switch to turn the noise blanker ON

or OFF.

wPush the [NB] for 1 sec. to enter the noise blanker

level setting condition.

eRotate the tuning dial to adjust the noise blanker

level.

rPush [NB] to exit the setting condition.

tPush [NB] again to turn the noise blanker function

OFF.

•[NB] indicator disappears.

•When using the noise blanker, received signals

may be distorted if they are excessively strong.

•The noise blanker function in AM mode can be

deactivated depending on initial set mode setting.

(p. 45)

▲

[NB] switch

RECEIVE AND TRANSMIT

ïANF (Automatic Notch Filter) function

When an optional UT-106 is installed (DSP appears

in the function display), an auto notch function can be

used.

The function automatically attenuates more than 3

beat tones, tuning signals, etc., even if they are mov-

ing.

The auto notch functions in SSB mode only.

qSelect SSB mode.

wPush [ANF] to turn the auto notch function ON.

•[ANF] indicator appears.

ePush [ANF] again to cancel the function.

•[ANF] indicator disappears.

Unwanted tone

frequency

Desired

signal (AF) Desired

signal (AF)

Particular frequency

is attenuated

Auto notch OFF Auto notch ON

■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 can

be used.

The noise reduction function reduces noise compo-

nents and picks out desired signals which are buried

in noise. The received AF signals are converted to

digital signals and then the desired signals are sepa-

rated from the noise.

qPush [NR] to turn the noise reduction ON.

•[NR] indicator appears.

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

level setting condition.

eRotate the tuning dial to adjust the noise reduction

level.

rPush [NR] to exit the setting condition.

tPush [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 is

available in all modes.

Noise reduction OFF Noise reduction activated

Desired

signal (CW)

Noise components

ïNR (Noise reduction) function

5RECEIVE AND TRANSMIT

■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.

qSelect the desired mode with the mode switches.

wPush [FIL] one or more times to select the desired

ﬁlter combination.

•ãor çdoes not appear while in normal IF ﬁlter mode.

•çappears when the wide IF ﬁlter is selected.

•ãappears when the narrow IF ﬁlter is selected.

When an optional ﬁlter is installed, set the optional

ﬁlter 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/DET

CFWS450HT (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

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

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

WIDE

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

NARROW 2.4 K 2.4 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

( Hz )

3.3 K

Note: *This selection can be used when the expanded filter

selection function is turned on in the initial set mode. (see right)

•Filter construction

•Filter selection table

RECEIVE AND TRANSMIT

■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 setting

qWhile pushing and holding [SET], push [POWER]

to enter initial set mode.

wPush [UPY] or [ZDN] one or more times until

“FIL”appears on the display.

eRotate 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.

rPush [PWR] to exit initial set mode.

DExpanded ﬁlter selection

The selectable ﬁlter combinations can be expanded

by setting the expanded ﬁlter selection to ON. Then

extra wide or narrow ﬁlter can be selected on desired

mode.

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

enter initial set mode.

wPush [UPY] or [ZDN] one or more times until

“EXP FIL”appears.

eRotate the tuning dial to turn the expanded filter

selection ‘on’.

•If ‘on’is selected, the expanded ﬁlter selection can be

used.

•Wide/narrow ﬁlter selecting

rPush [UPY] one or more times

until “WIDE ✻✻”or “NAR ✻✻”ap-

pears on the display.

tPush [MODE] one or more times

to select the desired mode.

yRotate the tuning dial to select a

ﬁlter.

uRepeat steps tand yto select

IF filters for other modes, if de-

sired.

•The filter combinations are stored

depending on operating modes.

iPush [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)

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

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

AM NOR (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

SSB no 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)

CW no 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)

RTTY no 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)

AM – – –– – –– – –– – –– – –– – –

: default

•Narrow ﬁlter setting table

•Wide ﬁlter setting table

•Optional ﬁlter selection

•Expanded ﬁlter selection “on”

•Wide ﬁlter setting

•Narrow ﬁlter setting

5RECEIVE AND TRANSMIT

ïMeter 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 during

transmit.

•Push [SET] one or more times to select the PO, ALC

and SWR meter mode.

DISPLAY

INDICATION 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 (see

above).

SWR Indicates the SWR over the transmis-

sion line.

■Function for transmit

•Setting output power

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

wPush [∫UP]/[√DN] one or more times to select

“RF Power”.

eRotate the main dial to select the desired output.

•Output power is displayed in 101 steps (L, 1–99 and H)

but is continuously selectable.

•Available power

SSB/CW/RTTY: 2 (or less) –100 W

AM: 2 (or less) –40 W*

*Carrier power

•Setting microphone gain

Microphone gain must be adjusted properly so that

your signal does not distort when transmitted.

qSelect SSB or another phone mode.

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

ePush [∫UP]/[√DN] one or more times to select

“MIC GAIN”.

rWhen speaking into the microphone adjust the mic

gain so that the ALC meter does not peak past the

ALC zone.

tPush [SET] to exit quick set mode.

Maximum output

power is selected.

Microphone gain is

set to 50.

ïOutput power and microphone gain

ALC zone

RECEIVE AND TRANSMIT

IC-718 has a built-in, low distortion Mic compressor

circuit. This circuit increases your average talk power

in SSB mode and is especially useful for DX’ing when

the receiving station is having difﬁculty copying your

signal.

qSelecting USB or LSB mode.

wSelect 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”.

eAdjust 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.

rPush [SET] to exit the quick set mode.

tPush [COMP], then adjust

yPush [SET] one or more times to select the ALC

meter.

uWhen speaking into the microphone adjust the mic

gain so that the ALC meter does not peak past the

ALC zone.

Note: When the ALC meter peaks above the ALC

zone, your transmited voice may be distorted.

▲

[COMP] switch

ïMicrophone 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.

qPush [VOX] to turn the function ON.

wSelect “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 “VOX

GAIN”

eWhile speaking into the microphone, adjust [VOX

GAIN] until the transceiver is transmitting.

rSelect “VOX Delay”in quick set mode.

•Push [∫UP]/[√DN] one or more times to select “VOX

Delay”

tWhile speaking into the microphone, adjust [VOX

DELAY] as desired.

ySelect “ANTI-VOX”in quick set mode.

•Push [∫UP]/[√DN] one or more times to select “AN

VOX”

uIf the receive audio from the speaker toggles the

transceiver to transmit during receive, adjust the

“ANTI-VOX”to the point where it has no effect.

iPush [SET] to exit the quick set mode.

ïVOX operation

▲

[VOX] switch

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 you

change the frequency range, the variable capacitors

are automatically preset to the memorized point.

TUNER OPERATION

•Tuner type setting (p.46)

qPush [PWR] for 1 sec. to turn power OFF.

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

turn power ON.

ePush [UPY] or [ZDN] one or more times to select

[TUNER].

rRotate 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.

yPush [PWR] for 1 sec. to turn power OFF.

uPush [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 such

cases, 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 inhibit

The AT-180 has a through inhibit condition. When se-

lecting this condition, the tuner can be used at poor

SWR’s. 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 tuner

will be “through”if the SWR is higher than 3:1 after

tuning.

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 of

VSWR 1.5:1 or less, use “automatic tuner on”and

turn the tuner OFF. See p. 46 for turning the function

ON and OFF.

5RECEIVE AND TRANSMIT

CAUTION: NEVER transmit with the tuner ON

when 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 the

same time. Both turners will not be function cor-

rectly.

[TUNER]

Tuning indicator;

Push and hold 1 sec. to start manual

tuning.

ïOptional AT-180 AUTOMATIC ANTENNA TUNER operation

RECEIVE AND TRANSMIT

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

1⁄2 λlong wire or multiple of the operating frequency.

TUNER OPERATION

•Tuner type setting (p.46)

qPush [PWR] for 1 sec. to turn power OFF.

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

turn power ON.

ePush [UPY] or [ZDN] one or more times to select

[TUNER].

rRotate the main dial to select “4”.

•AH-4 AUTOMATIC ANTENNA TUNER is selected.

yPush [PWR] for 1 sec. to turn power OFF.

uPush [PWR] to turn power ON again.

• MANUAL TUNING

qSet 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.

wPush 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.

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

CONVENIENT

• PTT tune function

The AH-4 is always tuned when the PTT is pushed

after the frequency is changed (more than 1%). This

function 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-718

PHONES

SQL AF SHIFT RIT

LOCK

MODE

FILTER

PWR

TUNER

∫

COMP

P.AMP

ATT

SET

ENT

F-INP

V/M

A=B

M=CL

SCN

ANF

A/B

VOX

SPL

M V

▲



AH-4

RRWARNING: 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 you

change the frequency–even slightly.

[TUNER]

ïOptional AH-4 AUTOMATIC ANTENNA TUNER operation

Tuning indicator;

Blinks: Tuning now

Appears: Tune is completed

Disappears: Tune is not completed

AH-4 setting example:

5RECEIVE AND TRANSMIT

■Split frequency operation

Split frequency operation allows you to transmit and

receive on two different frequencies. Split frequency

operation uses two frequencies, one in VFO A and

the other in VFO B.

Following is an example of setting 7.057 MHz, CW

mode in VFO A (for receive) and 7.025 MHz, CW

mode in VFO B (for transmit).

qSelect VFO B and set the frequency to 7.025 MHz/

CW.

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

to 7.057 MHz/CW.

ePush [SPL] to turn the split frequency operation

ON.

•Split operation is now set for receive 7.057 MHz/CW

and 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].

■SWR

The IC-718 has a built-in circuit of measuring antenna

SWR—no external equipment or special adjustments

are necessary.

ïMeasuring SWR

qConﬁrm that the output power is over 30 W.

wPush [SET] one or more times to select the SWR

meter.

ePush [MODE] one or more times to select CW or

RTTY operation.

•Key down or push [PTT] to transmit; then read the

actual SWR from the meter:

≤1.5 well matched antenna

≥1.5 check antenna or cable connection, etc.

The best match is in this range.

RECEIVE AND TRANSMIT

■Function for CW

ïConnection for CW

▲

1234

8765

10 11 12

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)

[ACC]

123

765

10 11

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

ïCW operation

qConnect a paddle or straight key as above.

wSelect CW (or CW-REV) mode with [MODE].

eSet CW break-in operation as semi break-in, full

break-in or OFF. (See p. 42)

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

•Push [∫UP]/[√DN] one or more times until “BK–IN”ap-

pears, then rotate the main dial to select the desired

condition:

FL: full break-in

SE: semi break-in

oF: no break-in

rSet 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 “BK–DELAY”ap-

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

time.

CW mode and semi

break-in operation

is selected.

Delay time of 6 dots

is selected in quick

set mode for semi

break-in operation.

5RECEIVE AND TRANSMIT

ïCW pitch control

The received CW audio pitch and monitored CW

audio pitch can be adjusted to suit your preferences

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

quency.

qPush [SET] for 1 sec. to enter quick set mode.

wPush [∫UP]/[√DN] one or more times until “CW

PITCH”appears, then rotate the main dial to set

the desired pitch.

ïCW reverse mode

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

with a reverse side CW carrier point like that of LSB

and USB modes. Use this mode when interference

signals are near the desired signal and you want to

change the interference tone.

qPush [MODE] one or more times to select CW

mode.

wPush [MODE] for 1 sec. to toggle between CW and

CW-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

ïElectronic CW keyer

The IC-718 has an electronic keyer. Both keying

speed and weight (the ratio of dot : space : dash) can

be set in quick set mode.

•Setting the electronic keyer

qPush [MODE] one or more times to select CW

mode.

wWhile pushing and holding [SET], push [POWER]

to enter initial set mode.

ePush [∫UP]/[√DN] one or more times until “CW

PADDL”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.

rPush [∫UP]/[√DN] one or more times until “KEY

RAT”appears, then rotate the main dial to select

the desired weight.

•Key weight can be select from 2.8 to 4.5.

tPush [∫UP]/[√DN] one or more times until “KEY

SPD”appears, then rotate the main dial to select

the desired weight.

•Key weight can be select from 6 to 60.

Paddle operation from front panel MIC connector

Connect 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 for

the 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

DASH

DOT

(Fixed*)

Adjustable range SPACE (Fixed*)

front panel

MIC connector

MIC U/D

paddle

DOT E

DASH

3.9 kΩ ±5%

2.2 kΩ ±5% e

Paddle operation

RECEIVE AND TRANSMIT

■Function for RTTY

ïConnection for RTTY(FSK)

Rear panel TU or TNC

Personal computer

Rear panel

view

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

*1Connect SQL line when required.

SQL*1

AF out

SEND

GND

FSKK

GND

2-conductor 1/8˝ plug

[ACC]

[EXT SP]

1234

5678

9101112

ïConnection for AFSK

To a TU or TNC

and personal computer.

Use either the ACC or microphone connector.

SQL*1

AF out

AF in

SEND

GND

1234

5678

9101112

Rear panel

view

*1Connect SQL line when required.

q Mic input

[MIC] connector

(Front panel view)

345

i AF output

u Mic GND

y PTT GND

t PTT

r SQL

[ACC] connector

5RECEIVE AND TRANSMIT

ïRTTY (FSK) operation

qConnect a terminal unit as at p. 34.

wSelect RTTY (or RTTY-R) mode with [MODE].

eSelect the desired FSK tone and shift frequencies

as below.

rSet the desired frequency with the main dial.

tOperate the connected PC or TNC (TU).

PRESETTING FOR RTTY

•Tone frequency

qPush [SET] for 1 sec. to enter quick set mode.

wPush [∫UP]/[√DN] one or more times until “TON

2125”appears, then rotate the main dial to select

the desired tone frequency.

•Sift frequency

qPush [SET] for 1 sec. to enter quick set mode.

wPush [∫UP]/[√DN] one or more times until “SIFT

170”appears, then rotate the main dial to select

the desired tone frequency.

• 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.

•Push [MODE] for 1 sec. to select RTTY-R (RTTY re-

verse) mode.

ïRTTY (AFSK) operation

qConnect a terminal unit as p. 33.

wSelect SSB (LSB) mode with [MODE].

•Generally, LSB is used on the HF bands.

eSelect the desired FSK tone/shift frequencies and

keying polarity the same way as FSK operation.

rSet the desired frequency with the main dial.

tOperate the connected PC or TNC (TU).

RTTY mark frequency

is set to 2125 Hz.

2125, 1615 and 1275

Hz are available.

RTTY sift frequency is

set to 850 Hz.

850, 425, 200 and

170 Hz are available.

RTTY mode

is selected.

ReverseNormal

BFO

170

Hz 2125

Hz 170

2125

BFO

mark

space

displayed freq.displayed freq.

mark

space

MEMORY OPERATION

■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 means

the programmed frequency can be tuned temporarily

with the tuning dial, etc. in memory mode.

■Memory channel selection

MEMORY

CHANNEL

MEMORY

CHANNEL

NUMBER CAPABILITY TRANSFER

TO VFO OVER-

WRITING 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

DUsing the [UPY] or [ZDN] keys

qPush [V/M] to select memory mode.

•“MEMO”appears.

wPush [CH] to enter memory CH select mode.

•“MEMO”blinks.

ePush [UPY] or [ZDN] several times to select the

desired memory channel.

•Push and hold [UPY] or [ZDN] for continuous selec-

tion.

rPush [CH] to exit memory CH select mode.

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

DUsing the keypad

qPush [V/M] to select memory mode.

•“MEMO”appears.

wPush [CH] to enter memory CH select mode.

•“MEMO”blinks.

ePush [F-INP/ENT], then push the desired memory

channel number using the keypad.

rPush [F-INP/ENT] to select the desired memory

channel.

tPush [CH] to exit memory CH select mode.

V/M

√∫

V/M

ENT

F-INP

V/M

A=B

ENT

F-INP

6MEMORY OPERATION

Memory channel programming can be performed ei-

ther in VFO mode or in memory mode.

■Memory channel programming

DProgramming in memory mode

qSelect 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).

wSet the desired frequency and operating mode in

memory mode.

•To program a blank channel, use direct frequency entry

with the keypad in advance.

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

quency and operating mode into the memory

channel.

•Preamp setting, attenuator on/off,and AGC setting can

also be programmed into a memory channel.

[EXAMPLE]: Programming 21.280 MHz/CW into

memory channel 18.

DProgramming in VFO mode

qSet the desired frequency and operating mode in

VFO mode.

wPush [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.

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

quency and operating mode into the memory

channel.

rPush [CH] to exit memory channel select mode.

[EXAMPLE]: Programming 7.086 MHz/LSB into

memory channel 10.

or keypad

Push for 1 sec.

Beep

MODE

√

∫

ENT

F-INP

V/M

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

Push for 1 sec.

Beep

√

∫

then

ENT

F-INP

MEMORY OPERATION

■Frequency transferring

The 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 mode

This is useful for transferring programmed contents to

VFO.

qSelect VFO mode with [V/M].

wPush [CH], then select the memory channel to be

transferred with [UPY] or [ZDN].

•“BLANK”appears if the selected memory channel is a

blank channel.

ePush [M≈V] for 1 sec. to transfer the frequency and

operating mode.

•Transferred frequency and operating mode appear on

the frequency readout.

rPush [CH] to exit memory channel select mode.

TRANSFERRING EXAMPLE IN VFO MODE

Operating frequency : 21.320 MHz/USB (VFO)

Contents of M-ch 12 : 14.180 MHz/CW

Push for 1 sec.

Beep

≈

√∫

6MEMORY OPERATION

■Memory clearing

Any unnecessary memory channels can be cleared.

The cleared memory channels become blank chan-

nels.

qSelect memory mode with [V/M].

wPush [CH], then select the memory channel to be

cleared with [UPY] or [ZDN].

ePush [M-CL] for 1 sec. to clear the contents.

•The programmed frequency and operating mode dis-

appear.

•“BLANK”appears.

rTo clear other memory channels, repeat steps w

and e.

Push for 1 sec.

Beep

M-CL

DTransferring in memory mode

This 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.

qPush [CH], then select the memory channel to be

transferred with [UPY] or [ZDN] in memory mode.

•And, set the frequency or operating mode if required.

wPush [M≈V] for 1 sec. to transfer the frequency and

operating mode.

•Displayed frequency and operating mode are trans-

ferred to the VFO.

eTo return to VFO mode, push [V/M] momentarily.

TRANSFERRING EXAMPLE IN MEMORY MODE

Operating frequency : 14.020 MHz/CW (M-ch 16)

Contents of M-ch 16 : 14.018 MHz/CW

Push for 1 sec.

Beep

M V

√

V/M

Rotate dial.

VFO A is displayed.VFO A is displayed.

M-ch 16 is displayed.

SCANS 7

■Scan types

■Preparation

•Channels

For 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 scan

edge memory channels.

•Scan resume ON/OFF

You can select the scan to resume or cancel when de-

tecting a signal, in set mode. Scan resume ON/OFF

must be set before operating a scan. See p. 45 for

ON/OFF setting and scan resume condition details.

•Scan speed

Scan 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 edge

P1 or P2 Scan edge

P2 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

Mch 1

Mch 99

Scan

start

with Programmed scan Memory scan

Squelch

open

The scan continues

until it is stopped man-

ually, and does not

pause even if it detects

signals.

Scan pauses on

each channel when

the scan resume is

ON; not applicable

when OFF.

Squelch

open

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 a

signal, then resumes. When a signal disap-

pears while scan is paused, scan resumes 2

sec. later.

7SCANS

■Programmed scan operation

qSelect VFO mode with [V/M].

wSelect the desired operating mode.

•The operating mode can also be changed while scan-

ning.

eSet [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.

rPush [SCAN] to start the programmed scan.

•“SCAN”appears while scanning.

tWhen the scan detects a signal, the scan stops,

pauses or ignores it depending on the resume set-

ting and the squelch condition.

yTo 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.

■Memory scan operation

qSelect memory mode with [V/M].

wSelect the desired operating mode.

•The operating mode can also be changed while scan-

ning.

eSet [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.

rPush [SCAN] to start the memory scan.

•“SCAN”appears while scanning.

tWhen the scan detects a signal, the scan stops,

pauses or ignores it depending on the resume set-

ting and the squelch condition.

yTo cancel the scan, push [SCAN].

2 or more memory channels must be programmed

for memory scan to start.

SET MODE

■General

Set mode is used for programming infrequently

changed values or conditions of functions. The IC-718

has 2 separate set modes: quick set mode and initial

set mode.

DQuick set mode operation

qWhile power is ON, push [SET] for 1 sec.

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

wPush [UPY] or [ZDN] to select the desired item.

eRotate the main dial to set the values or conditions

for the selected item.

rRepeat wand eto set other items.

tTo exit quick set mode, push [SET] momentarily.

DInitial set mode operation

qPush [POWER] for 1 sec. to turn power OFF.

wWhile pushing and holding [SET], push [POWER] to

turn power ON.

•Initial set mode is selected and one of its items appears.

ePush [UPY] or [ZDN] to select the desired item.

rRotate the main dial to set the values or conditions

for the selected item.

tRepeat eand rto set other items.

yTo exit initial set mode, push [PWR] for 1 sec. to turn

power OFF.

uPush [PWR] to turn power ON again.

• The conditions selection in intial set mode are now ef-

fective.

Item

Value of

Condition

Item

Value of

Condition

[DISPLAY EXAMPLE: INITIAL SET MODE]

[DISPLAY EXAMPLE: QUICK SET MODE]

[DIAL]

√

[√][∫]

[SET]

[DIAL]

[PWR] √

√

[√][∫]

[SET]

8SET MODE

•RF power

This item adjusts the RF output power. The RF output

power 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 meter

is displayed automatically.

•Mic gain

This item adjusts microphone gain from 0 to 99 and H for

indication, however, it can be adjusted continuously.

The default is 50.

•VOX gain

This item adjusts the VOX gain for the VOX (voice activated

transmit) function.

The default is 50.

•Anti VOX level

This item adjusts the ANTI-VOX gain for the VOX (voice ac-

tivated transmit).

The default is 50.

•CW pitch

This item adjusts CW pitch. CW pitch is adjustable from

300 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).

■Quick set mode items

•BK-IN

This 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.

SET MODE

•BK-IN delay

This item adjusts break-in delay time for CW semi break-in

operation. The delay time is selectable from 2.0 to 13

(dots).

The default is 7.

•Key speed

This 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 can

be selected from 2.8 to 4.5.

The default is 30 (3.0).

•RTTY shift

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

170, 200, 425 and 850.

The default is 170 Hz.

•Dimmer

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

lectable values: Off, Low and High.

The default is HI (High).

•RTTY mark tone

This item selects RTTY tone.There are 3 selectable values:

1275, 1615 and 2125 Hz.

The default is 2125 Hz.

8SET MODE

•Mode select

This item is available in all modes, and allows you to sim-

plify operation by inhibiting the selection of unneeded op-

erating modes during normal operation. For example if you

are operating mobile and only plan on using LSB and USB

modes, use “MODE SELECTION”to inhibit access to all

other modes (CW, RTTY and AM), thereby making selec-

tion of LSB and USB quick and easy.

The default is on for all operating modes. To toggle an op-

erating mode on or off, push [MODE] one or more times

until the desired mode is displayed. Then rotate the main

dial to set on or off.

•RF/SQL VR

The [RF/SQL] control can be set as the RF/squelch control

or automatic (acts as squelch in AM modes; as RF in

SSB/CW/RTTY modes) or the squelch control. (See p. 20)

The default is rS (RF/squelch).

•Beep level

This item adjusts the conﬁrmation beep level.

The default is 50.

•Band edge beep

A beep sounds when an operating frequency enters or exits

a transmit frequency range. This functions independent of

the conﬁrmation beep setting.

The default is on.

•Side-tone level

This item adjusts the CW side-tone level.

The default is 30.

•Beep

A beep sounds each time a switch is pushed to conﬁrm it.

This function can be turned OFF for silent operation.

The default is on.

■Initial set mode items

SET MODE

•Meter peak hold

This item selects meter peak hold function on or off.

The default is on.

•Scan resume

This item sets the scan resume function ON or OFF.

ON: scan resumes 10 sec. after stopping on a signal (or 2

sec. after a signal disappears); OFF: scan soes not resume

after stopping on a signal. For the priority watch, setting to

OFF pauses the watch until the signal disappears and scan

resumes.

The default is on.

•AM Noise blanker

When this item is set to ON, the noise blanker function is

available on AM mode. This is useful when communicating

in AM mode (the noise blanker function should not be used

when listening to regular AM broadcasts as it may degrade

the receive audio).

The default is on.

•Auto TS

This item sets auto tuning speed. The tuning dial normally

changes the frequency 2.5 KHz/revolution in 10 Hz tuning

step. When auto tuning step is turned on this increases to

50 KHz/revolution in 50 Hz tuning step during quick rota-

tion of the dial.

The default is on.

•Scan speed

This item sets the rate at which channels or frequencies are

scanned during scan operations. High or Low can be se-

lected.

The default is HI (High).

•Key type

This item adjusts the CW paddle type. Four selections are

available.

•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 microphone’s [UP]/[DN] keys insted of

the paddle.

The default is n (normal).

8SET MODE

•Tuner type

This 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 connected

The default is no.

•Auto tune

The optional AT-180 ANTENNA TUNER has an automatic start

capability which starts tuning if the SWR is higher than

1.5—3.

When “off”is selected, the tuner remains OFF even when

the SWR is poor (1.5—3). When “on”is selected, automatic

tune starts even when the tuner is turned OFF.

The default is oF (OFF).

•PTT tune

When an optional AH-4 or AT-180 AUTOMATIC ANTENNA

TUNER is connected, tuning can be started automatically at

the moment the PTT is pushed.

The default is oF (OFF).

•Speech language

When an optional UT-102 VOICE SYNTHESIZER UNIT is in-

stalled, you can select between English and Japanese as

the language.

The default is En (English).

•Speech speed

When 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 level

When an optional UT-102 is installed, the synthesizer can

be set to read the frequency/mode only (OFF), or both the

frequency/mode and S-meter level (ON).

The default is on.

•CI-V baud rate

This item sets the data transfer rate. When “Auto”is se-

lected, the baud rate is automatically set according to the

connected controller or remote controller.

The default is At (Auto).

SET MODE

•CI-V address

To distinguish equipment, each CI-V transceiver has its own

Icom standard address in hexadecimal code. The IC-718’s

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 a

different address for each IC-718 in the range 01H to 7FH.

The default is 5E.

•CI-V Transceive

Transceive operation is possible with the IC-718 connected

to other Icom HF transceivers or receivers. When “on”is se-

lected, changing the frequency, operating mode, etc. on the

IC-718 automatically changes those of connected trans-

ceivers (or receivers) and vice versa.

The default is on.

•CI-V 731 mode

When connecting the IC-718 to the IC-735 for transceive

operation, you must change the operating frequency data

to 4 bytes.

•This item MUST be set to “on”when operating transceiver with

the IC-735.

The default is oF (off).

•OPTION Filter

When an optional IF ﬁler is installed, this selection is nec-

essary, otherwise the ﬁlters cannot be selected. Selections

available are FL-96, FL-222, FL-52A, FL-53A, FL-257 and

none (default). See p. 24 for usable filters for each mode

and see P. 50 for ﬁlter installation.

•Expand Filter

When an optional IF ﬁlter is installed, this selection expands

ﬁlter and ﬁlter selection (W/N) key combination on operating

mode independently.

The default is oF (off).

•Filter select (Wide/Narrow)

When an optional IF ﬁlter is installed, you can arrange the

ﬁlter and ﬁlter selection key combination. (p. 25)

INSTALLATION AND CONNECTIONS

■Opening the transceiver’s

case

Follow the case and cover opening procedures shown

here when you want to install an optional unit or adjust

an internal unit, etc.

CAUTION: DISCONNECT the DC power cable

from the IC-718 before performing any work on the

transceiver. Otherwise, there is danger of electric

shock and/or equipment damage.

qRemove the 5 screws from the top of the trans-

ceiver and 4 screws from the sides, then lift up the

top cover.

wRemove the 5 screws from the bottom of the trans-

ceiver, then remove the bottom cover.

■Optional bracket and carrying handle

DMounting bracket

An optional IC-MB5 MOBILE MOUNTING BRACKET is

available to install the radio under a table, on a wall, in

a vehicle, etc.

Select an area to mount the receiver keeping in mind

that the weight of the transceiver is approx. 3.80kg.

DCarrying handle

An optional handle allows you to easily carry and

transport the transceiver.

Attach the MB-23 CARRYING HANDLE with the sup-

plied rubber feet as shown.

INSTALLATION AND CONNECTIONS

The UT-102 announces the received frequency,

mode, S-meter level and current time in a clear, elec-

tronically-generated voice, in English (or Japanese).

➥Push [LOCK] for 1 sec. to announce the frequency,

etc.

qRemove the bottom cover as shown above.

wRemove the protective paper attached to the bot-

tom of the UT-102 to expose the adhesive strip.

ePlug UT-102 into J2501 on the MAIN unit as

shown at right.

rReturn the bottom cover to its original position.

■CR-338

HIGH STABILITY CRYSTAL UNIT

By installing the CR-338, the total frequency stability

of the receiver will be improved.

qRemove the bottom cover as shown in the diagram

before.

wDisconnect W2 from J4401 (MAIN unit) and W3

from J4201 (MAIN unit).

eRemove 9 screws from the PLL unit, disconnect

P4 from J201 (MAIN unit) and P2 from J401

(MAIN unit), then remove the PLL unit.

rRemove the supplied internal crystal and replace

with the CR-338.

tReturn the PLL unit, plugs and ﬂat cables to their

original positions.

yAdjust the reference frequency at C16 using a fre-

quency counter if desired.

•Connect the frequency counter to P. 2 (PLL unit).

uReturn the bottom cover to its original position.

Internal crystal

CR-338

PLL unit

W 3

W 2

J 4201

J 4401

P 4

J 201

J 401

P 2; Frequency check point

(Connect a frequency counter

and adjust the frequency to

64.00000 MHz with C 16.)

C 16 MAIN unit

PLL unit

■UT-102

VOICE SYNTHESIZER UNIT

Solder 4 leads

9INSTALLATION AND CONNECTIONS

■UT-106 DSP RECEIVE UNIT

■Optional IF ﬁlters

The UT-106 provides AF DSP functions such as noise

reduction and auto notch.

qRemove the bottom cover.

wSlide the insulating case onto the UT-106 as

shown right. (Fig. 1)

eRemove the connection cable (P2601) from J2602

on the MAIN unit. Connect the cable into J1 on the

UT-106.

rPlug the connection cable (P1) from the UT-106 to

J2602 on the MAIN unit.

tPlug the flat cable into J3 on the UT-106 and to

J2603 on the MAIN unit.

•Take care regarding the conductor direction.

yTurn the UT-106 unit over. (Fig. 2)

•No need to ﬁx with an adhesive strip, etc.

uPut the UT-106 on the MAIN unit.

•No need to ﬁx with an adhesive strip, etc.

•Ensure that the surplus cable from UT-106 is stored

under the unit.

iReturn the bottom cover to its original position.

UT-106

P 1 (from UT-106)

J 2602

J 2603

P 2601

insulating case

flat cable

MAIN unit

Turn the unit over

Several IF ﬁlters are available for the IC-718.You can

install 1 ﬁlter for 455 KHz IF. Choose the appropriate

ﬁlter for your operating needs. (pgs, 24-25)

DInstallation

qRemove the bottom cover as shown on the p. 48.

wRemove 7 screws, connection cable p1 from J1,

p5 from J701, W4 from J4101 and W5 from J4001

and 2 Tr-clampers as shown in the diagram below.

eInstall the desired 455 KHz ﬁlter as shown in the

diagram below.

rMounting the ﬁlter with supplied washers and nuts.

tSolder the 4 leads.

yReturn the MAIN unit and bottom cover to their

original positions.

After filter installation, specify the installed filter

using initial set mode. (p. 47) Otherwise, the in-

stalled ﬁlter will not function properly.

Tr-clamper

W 4

W 5

P 5

P 1

J 701

J 1

J 4101

MAIN unit

Tr-clamper

Optional IF filter

Solder 4 leads

J 2603

Main unit

Rear panel

UT-106

Flat cable*

insulating case

* Supplied with UT-106

UT-106

Surplus cable

J 2602

Fig. 1

Fig. 2

•Turn the unit over

INSTALLATION AND CONNECTIONS

■AT-180 internal switch description

The optional AT-180 has 3 operating conditions for

HF band operation. Select a suitable condition

according to your antenna system.

➀Remove the top cover of the AT-180.

➁Set the tuner switches to the desired positions

according to the table below.

•Speciﬁcations for the AT-180

•Frequency coverage : 1.9–54 MHz

•Input impedance : 50 Ω

•Maximum input : 120 W

power

•Minimum tuning : 8 W

power

•Matching impedance : 16.7–150 Ω(HF band)

range 20–125 Ω(50 MHz band)

•Tuning accuracy : Less than SWR 1.5:1

•Insertion loss : Less than 1.0 dB

(after tuning)

•Power supply : 13.8 V DC/1 A (supplied from

requirements the transceiver’s ACC socket)

•Dimensions (mm/in) : 167(W)×58.6(H) ×225(D)

69⁄16(W)×25⁄17(H) ×87⁄8(D)

•Weight : 2.4 kg; 5 lb 4 oz

•Supplied accessories: coaxial cable (1 m),

ACC cable (DIN 13 pins)

•AT-180 inside top cover

•Connector information for ACC(2) socket

S2 S1

DC BA

ACC 2

PIN NO./

NAME DESCRIPTION

➀8 V Regulated 8 V output.

(10 mA max.)

➁GND Connects to ground.

➂SEND Input/output pin.

Goes to ground when transmitting (20 mA

max). When grounded, transmits.

➃BAND Band voltage output.

(Varies with amateur band; 0 to 8.0 V).

➄ALC ALC output voltage (–4 to 0 V).

➅NC No connection.

➆13.8V

13.8 V output when power is ON (1 A max).

SW Position Operation

(default) The tuner operating condition is set by S2

described below.

THROUGH INHIBIT

The tuner tunes the antenna even when

the antenna has poor SWR (up to VSWR

3:1 after tuning). In this case, manual tun-

ing is necessary each time you change the

frequency although the tuner automatically

starts tuning when the VSWR is higher

than 3:1. This setting is called “

through

inhibit,

” however, the tuner is set to

“

through

” if the VSWR is higher than 3:1

after tuning.

TUNER SENSITIVE CONDITION

The tuner tunes each time you transmit

(except SSB mode). Therefore, the lowest

SWR is obtained at any given time.

For SSB mode, the same condition is as

(default)

NORMAL CONDITION

The tuner tunes when the SWR is higher

than 1.5:1. Therefore, the tuner activates

only when tuning is necessary.

the “D” position below.

MAINTENANCE

■Troubleshooting

The following chart is designed to help you correct

problems which are equipment malfunctions. If you are not able to locate the cause of a problem or

solve it through the use of this chart, contact your near-

est Icom Dealer or Service Center.

DISPLAY

The displayed frequency

does not change properly.

•The dial lock function is activated.

•A quick set mode screen is selected.

•Push [LOCK] to deactivate the function.

•Push [SET] to exit the quick set mode. p. 41

p. 6

• The internal CPU has malfunctioned. • Reset the CPU. p. 53

PROBLEM POSSIBLE CAUSE SOLUTION REF.

POWER

Power does not come on

when the [POWER] switch

is pushed.

•DC power cable is improperly connected.

•Fuse is blown.

•Reconnect the DC power cable correctly.

•Check for the cause, then replace the fuse with

a spare one.

(Fuses are installed in the DC power cable and

the internal PA unit.)

p. 12

p. 53

RECEIVE

No sound comes from the

speaker.

•Volume level is too low.

•The squelch is closed.

•The transceiver is in the transmitting condition.

•Rotate [AF] clockwise to obtain a suitable

listening level.

•Rotate [RF/SQL] to 10 o’clock position to open

the squelch.

•Check the SEND line of an external unit, if

desired.

p. 2

p. 6

TRANSMIT

Transmitting is impossi-

ble.

•The operating frequency is not set to a ham

band.

•Set the frequency to a ham band. p. 17

Sensitivity is low. •The antenna is not connected properly.

•The antenna for another band is connected.

•The antenna is not properly tuned.

•The attenuator is activated.

•Reconnect to the antenna connector.

•Connect an antenna suitable for the

operating frequency.

•Push [TUNER] for 2 sec. to manually tune the

antenna.

•Push [ATT] to select “ATT” OFF.

—

p. 3

Receive audio is distorted. •The operating mode is not selected correctly.

•IF SHIFT function is activated.

•Noise blanker function is activated.

•Preamp is activated.

•The noise reduction is activated and the [NR]

control is set too high.

•Select a suitable operating mode.

•Rotate the SHIFT control to center position.

•Push [NB] to turn the function OFF.

•Push [P.AMP] to turn the function OFF.

•Set the [NR] control for maximum readability.

p. 20

p. 21

p. 22

p. 23

SCAN

Programmed scan does

not stop.

•Squelch is open.

•[RF/SQL] is assigned to RF gain control and

squelch is open.

•Set [RF/SQL] to the threshold point.

•Reset [RF/SQL] control assignment and set it to

the threshold point.

p. 3

p. 30

Output power is too low. •[RF POWER] is set too low.

•[MIC GAIN] is set too low.

•The antenna for another band is selected.

•The antenna is not properly tuned.

•Set [RF POWER] to a suitable position.

•Set [MIC GAIN] to a suitable position.

•Select an antenna suitable for the operating

frequency.

•Push [TUNER] for 2 sec. to manually tune the

antenna.

p. 42

p. 10

p. 3

No contact possible with

another station.

•RIT function is activated.

•Split frequency function is activated.

•Push [RIT] to turn the function OFF.

•Push [SPLIT] to turn the function OFF.

p. 21

pgs. 7

31, 32

Transmitted signals are

distorted.

•[MIC GAIN] is set too high. •Set [MIC GAIN] to a suitable position. p. 2

Programmed scan does

not start.

•The same frequencies have been programmed

in scan edge memory channels P1 and P2.

•Program different frequencies in scan edge

memory channels P1 and P2.

p. 40

Memory scan does not

start.

•2 or more memory channels have not been

programmed.

•Program 2 or more memory channels. p. 40

—

• [COMP] function is activated. • Turn [COMP] off. p. 27

• Power Supply not turned ON.

MAINTENANCE

CIRCUITRY FUSE REPLACEMENT

The 13.8 V DC from the DC power cable is applied to

all units in the IC-718 through the circuitry fuse. This

fuse is installed in the MAIN unit.

qRemove the top cover as shown on p. 48

wReplace the circuitry fuse as shown in the diagram

at right.

eReplace the top cover.

FGB 4 A

PA unit

■Fuse replacement

If a fuse blows or the transceiver stops functioning, try

to ﬁnd the source of the problem, and replace the dam-

aged fuse with a new, rated fuse.

CAUTION:DISCONNECT the DC power cable

from the transceiver when changing a fuse.

The IC-718 has 2 types of fuses installed for trans-

ceiver protection.

•DC power cable fuses ................................FGB 20 A

•Circuitry fuse ................................................FGB 4 A

DC POWER CABLE FUSE REPLACEMENT

20 A

fuse

■Resetting the CPU

Resetting CLEARS all programmed contents in

memory channels and returns programmed values

in set mode to their defaults.

When ﬁrst applying power or when the function seems

to be displaying erroneous information, reset the CPU

as follows:

qMake sure transceiver power is OFF.

wWhile pushing [UPY] and [ZDN], push [PWR] to

turn power ON.

•The internal CPU is reset.

•The transceiver displays its initial VFO frequencies when

resetting is complete.

[PWR]

√

[√][∫]

SPECIFICATIONS

DGeneral

•Frequency coverage : Receive

0.03–29.999999 MHz*1

Transmit

1.800–1.999999 MHz*2

3.500–3.999999 MHz*2

7.000–7.300000 MHz

10.100–10.150000 MH

14.000–14.350000 MHz

18.068–18.168000 MHz

21.000–21.450000 MHz

24.890–24.990000 MHz

28.000–29.700000 MHz

*1Guaranteed range: 0.5–29.999999 MHz

*2Varies according to version

•Mode : USB, LSB, CW, RTTY, AM,

•Number of memory : 101 (99 regular, 2 scan edges)

channels

•Frequency stability : Less than ±200 Hz from 1

min. to 60 min. after power

on. After that rate of stability

less than ±30 Hz/hr. at

+25°C (+77°F). Temperature

fluctuations 0°C to +50°C

(+32°F to +122°F) less than

±350 Hz.

•Power supply : 13.8 V DC ±15%

requirement (negative ground)

•Current drain : Receive

(at 13.8 V DC) Standby 1.3 A

Max. audio 2.0 A

Transmit

Max. power 20.0A

•Operatable temp. range : –10°C to +60°C; +14°F to

+140°F

•Antenna connector : SO-239 (50 Ω)

•Dimensions : 240(W)×95(H)×239(D) mm

(projections not included) 97⁄16(W)×33⁄4(H)×913⁄32(D) in

•Weight (approx.) : 3.8 kg; 8 lb 6 oz

•ACC connector : 13-pin

•REMOTE connector : 2-conductor 3.5 (d) mm (1⁄8˝)

DTransmitter

•Output power :

SSB, CW, RTTY 2–100 W

AM 2–40 W

•Modulation system :

SSB Balanced modulation

AM Low level modulation

•Spurious emissions : Less than –50 dB below

peak output power

*Spurious freq.; below 30 MHz: –50 dB, above 30 MHz:

–60 dB

•Carrier suppression : More than 40 dB

•Unwanted sideband : More than 50 dB

•Microphone connector : 8-pin connector (600 Ω)

•Key connector : 3-conductor 6.5 (d) mm (1⁄4˝)

•SEND/ALC connector : Phono (RCA)

DReceiver

•Receive system : Double-conversion

superheterodyne system

•Sensitivity :

SSB, CW, RTTY 0.16 µV (1.8–29.999999 MHz)

AM 13 µV (0.5–1.799999 MHz)

2 µV (1.8–29.999999 MHz)

•Squelch sensitivity (threshold):

SSB, CW, RTTY Less than 5.6 µV

•Selectivity :

SSB, CW, RTTY More than 2.1 kHz/–6 dB

Less than 4.5 kHz/–60 dB

AM More than 6 kHz/–6 dB

Less than 20 kHz/–40 dB

•Spurious and image rejection ratio:

More than 70 dB

(1.8–29.999999 MHz)

•RIT variable range :±1200 Hz

•Audio output power : More than 2.0 W at 10%

(at 13.8 V DC) distortion with an 8 Ωload

•PHONES connector : 3-conductor 6.35 (d) mm

(1⁄4˝)

•External SP connector : 2-conductor 3.5 (d) mm

(1⁄8˝)/8Ω

All stated speciﬁcations are typical and subject to

change without notice or obligation.

OPTIONS

AT-180 HF + 50 MHz AUTO-

MATIC ANTENNA TUNER

Fully automatic antenna tuner with

preset memories for each 100 kHz.

Unique “Automatic tuner on ”function

is available. See P. 51 for AT-180 spec-

iﬁcations.

IC-PW1 HF + 50 MHz 1 KW LINER AMPLIFIER

Full-duty 1 kW linear am-

plifier including an auto-

matic antenna tuner. Has

automatic tuning and

band selection capability.

Full break-in (QSK) op-

eration is possible. The

amplifier/power supply

unit and the remote con-

trol unit are separated.

AH-4 HF + 50 MHz AUTOMATIC

ANTENNA TUNER

Specially designed to tune a long wire

antenna for portable or mobile HF op-

eration. The PTT tuner start function

provides simple operation.

•Input power rating: 120 W

SP-20 EXTERNAL SPEAKER

4 audio filters; headphone jack; can

connect to 2 transceivers.

•Input impedance: 8 Ω

•Max. imput power: 5 W

HM-36 HAND MICROPHONE

Hand microphone equipped with

[UP]/[DOWN] switches.

Same as supplied.

SM-8 DESKTOP MICROPHONE

Including 2 connection cables for si-

multaneous connection of 2 trans-

ceivers. Has [UP]/[DOWN] switches.

The OPC-589 is necessary to use mi-

crophone.

AH-2b ANTENNA ELEMENT

A 2.5 m long an-

tenna element for

mobile operation

with the AH-4.

•Frequency

coverage:

3.5–28 MHz bands

with the AH-4

SM-20 DESKTOP MICROPHONE

Unidirectional, electret microphone for

base station operation. Includes

[UP]/[DOWN] switches and a low cut

function.

SM-6 DESKTOP MICROPHONE

Electret condenser-type desktop mi-

crophone.

PS-85 DC POWER SUPPLY

Light weight switching regulator sys-

tem power supply.

•Output voltage: 13.8 V DC

•Max. current drain: 20 A

SP-21 EXTERNAL SPEAKER

Designed for base station operation.

Input impedance: 8 Ω

Max. input power: 5 W

CT-17 CI-V LEVEL CONVERTER

For remote receiver control using a

personal computer. You can change

frequencies, operating mode, memory

channels, etc.

12 OPTIONS

OPC-599 ADAPTER CABLE

13-pin, ACC connector to 7-pin + 8-pin ACC connector.

SP-7 EXTERNAL SPEAKER

Compact speaker for base station op-

eration. Height can be adjusted for

your convenience.

UT-102 VOICE SYNTHESIZER

Announces the receive frequency,

mode, S-meter level and current time

in a clear, electronically-generated

voice, in English (or Japanese).

FL-52A, FL-53A, FL-96, FL-222

and FL-257 455 KHz FILTERS

•FL-52A: 500 Hz/–6dB (CW/RTTY

narrow)

•FL-53A: 250 Hz/–6dB (CW narrow)

•FL-96: 2.8 KHz/–6dB (SSB wide)

•FL-222: 1.8 KHz/–6dB (SSB narrow)

•FL-257: 3.3 KHz/–6dB (SSB wide)

UT-106 DSP RECEIVE UNIT

Provides AF DSP functions such as

noise reduction and auto notch.

CR-338 HIGH-STABILITY CRYS-

TAL UNIT

Contains a temperature-compensat-

ing oven heater and crystal unit for im-

proved frequency stability.

•Frequency stability:±0.5 ppm

MB-23 CARRYING HANDLE

Carrying handle, convenient for

portable operation.

AH-710 FOLDED DIPOLE AN-

TENNA

Covers from 1.9–30 MHz bands. Has

an SO-239 connector. 30 m (98.4 ft)

coaxial cable with PL-259 connector

is supplied.

approx. 24.5 m; 80.3 ft

IC-MB5 MOBILE MOUNTING

BRACKET

Transceiver mounting bracket for mo-

bile operation.

CONTROL COMMAND

•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 Communi-

cations Interface-V (CI-V) controls the following func-

tions of the transceiver.

Up to 4 Icom CI-V transceivers or receivers can be

connected to a personal computer equipped with an

RS-232C port. See p. 32 for setting the CI-V condition

using set mode.

•Data format

The CI-V system can be operated using the following

data formats. Data formats differ according to com-

mand numbers. A data area or sub command is added

for some commands.

CONTROLLER TO IC-718

FE 5E E0 Cn Sc Data area FD

Preamble code (fixed)

Transceiver’s default address

Controller’s default address

Command number

(see table at right)

Sub command number

(see table at right)

BCD code data for frequency or

memory number entry

End of message code (fixed)

OK MESSAGE TO CONTROLLER

FE FE E0 5E FB FD

Preamble code (fixed)

Controller’s default address

Transceiver’s default address

OK code (fixed)

End of message code (fixed)

NG MESSAGE TO CONTROLLER

FE FE E0 5E FA FD

Preamble code (fixed)

Controller’s default address

Transceiver’s default address

NG code (fixed)

End of message code (fixed)

IC-718 TO CONTROLLER

FE E0 5E Cn Sc Data area FD

Preamble code (fixed)

Controller’s default address

Transceiver’s default address

Command number

(see table at right)

Sub command number

(see table at right)

BCD code data for frequency or

memory number entry

End of message code (fixed)

qwert y u

■Remote jack (CI-V) information

9–15

V DC

personal

computer

ct- 17

BC-25

(optional)

mini-plug cable

IC-718

▲

13 CONTROL COMMAND

•Command table

Sub commandCommand Description

—00 Send frequency data

01 Send mode data

—03 Read frequencies

—04 Read operating mode

05 Set operating frequency

Set VFO

Set VFO A

Set VFO B

VFO A=B

VFO A # B

—0B Memory clear

Scan stop

Prog/Memo Scan Start

Resume OFF

Resume ON

0F SPLIT OFF

SPLIT ON

10 Set TS

02 Read Upper/Lower frequencies

06 Set mode

08 Set Memory

Set Memory CH

09 Memory write

0A Memory $ VFO

ATT

AF Gain

RF Gain

SQL Level

NR Level

CW Pitch

RF Power

MIC Gain

KEY Speed

BK-IN Delay

02 Read SQL Open/Close

Read SIG (S-meter) level

PRE-AMP

Auto Notch

COMP

VOX

BK-IN

Read ID

—

INTERNAL VIEW

FILTER unit

Final amplifier (2SC2094x2)

PA unit

Caution:

The transceiver has been

thoroughly tested and

adjusted at the factory

before being shipped.

The transceiver warranty

does not cover any

problems caused by

unauthorized internal

adjustment.

Fuse (FGB 4 A)

R 25

Final ID adj. (R 24)

Drive ID adj. (R 21)

PLL unit

MAIN unit

Carrier suppression adj.

(R 2303)

IC APC adj. (R 1720)

Tx power adj. (R 1707)

AM Tx carrier adj.

(R 1730)

Reference freq. adj. (C 16)

Optional crystal (CR-338)

Optional IF filter

(See p. 24)

■Top view

■Bottom view

Count on us!

6-9-16 Kamihigashi, Hirano-ku, Osaka 547-0002 Japan

A-5649D-1EX-w

Printed in Japan

Ic 718

Manual-Icom-IC-718 Manual-Icom-IC-718

ICOM--IC-718-user-manual ICOM--IC-718-user-manual

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