Icom IC-718 User Manual

INSTRUCTION MANUAL

HF ALL BAND TRANSCEIVER

i718

IMPORTANT

READ THIS INSTRUCTION MANUAL CAREFULLY before attempting to operate the

transceiver.

SAVE THIS INSTRUCTION MANUAL. This manual contains important safety and operating

instructions for the IC-718.

EXPLICIT DEFINITIONS

WORD

RWARNING

CAUTION

NOTE

DEFINITION

Personal injury, fire hazard or electric shock may occur.

Equipment damage may occur.

Inconvenience only.

No risk of personal injury, fire or electric shock.

PRECAUTIONS

R WARNING HIGH VOLTAGE! NEVER attach an antenna or internal antenna connector

during transmission. This may result in an electric shock or burn.

R NEVER apply AC to the [DC13.8V] jack on the transceiver rear panel. This could cause a fire or ruin

the transceiver.

R NEVER apply more than 16 V DC, such as a 24 V battery, to the [DC13.8V] jack on the transceiver

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

R NEVER let metal, wire or other objects touch any internal part or connectors on the rear panel of

the transceiver. This may result in an electric shock.

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 permanent damage to the transceiver if left there for extended periods.

AVOID placing the transceiver in excessively dusty environments or in direct sunlight.

AVOID placing the transceiver against walls or putting anything on top of the transceiver. This will obstruct heat dissipation.

During mobile operation, DO NOT operate the transceiver without running the vehicle’s engine. When transceiver power is ON and your vehicle’s engine is OFF, the vehicle’s battery will soon become exhausted.

Make sure the transceiver power is OFF before starting the vehicle. This will avoid possible damage to the transceiver by ignition voltage spikes.

During maritime mobile operation, keep the transceiver and microphone as far away as possible from the magnetic navigation compass to prevent erroneous indications.

BE CAREFUL! The heatsink will become hot when operating the transceiver continuously for long periods.

BE CAREFUL! If a linear amplifier is connected, set the transceiver’s RF output power to less than the linear amplifier’s maximum input level, otherwise, the linear amplifier will be damaged.

Use Icom microphones only (supplied or optional). Other manufacturer’s microphones have different pin assignments, and connection to the IC-718 may damage the transceiver.

i

TABLE OF CONTENTS 1

IMPORTANT .............................................................	i
EXPLICIT DEFINITIONS ..........................................	i
PRECAUTIONS ........................................................	i
1 TABLE OF CONTENTS .......................................	1
SUPPLIED ACCESSORIES ....................................	1
2 PANEL DESCRIPTION ....................................	2–8
n Front panel ........................................................	2
n Function display ................................................	5
n Rear panel ........................................................	6
n Microphone (HM-36) .........................................	8
3 INSTALLATION AND CONNECTIONS .........	9–14
n Unpacking .........................................................	9
n Selecting a location ...........................................	9
n Grounding .........................................................	9
n Antenna connection ..........................................	9
n Required connections .....................................	10
n Advanced connections ....................................	11
n Power supply connections ..............................	12
n Liner amplifier connections .............................	13
n External antenna tuners ..................................	14
4 FREQUENCY SETTING ..............................	15–19
n When first applying power ...............................	15
n Initial setting ....................................................	15
n VFO description ..............................................	16
n Frequency setting ...........................................	17
n Dial lock function .............................................	19
5 RECEIVE AND TRANSMIT .........................	20–34
n Mode selection ................................................	20
n Squelch and RF gain ......................................	20
n Function for receive ........................................	21
n DSP function (option) ......................................	23
n Filter selection .................................................	24
n Filter setting ....................................................	25
n Function for transmit .......................................	26
n Split frequency operation ................................	30
n SWR ................................................................	30
n Function for CW ..............................................	31
n Function for RTTY ...........................................	33

SUPPLIED ACCESSORIES

The transceiver comes with the following accessories.
	Qty.
q DC power cable....................................................	1
w Hand microphone (HM-36) ..................................	1
e Fuse (FGB 20 A; for DC cable) ...........................	1
r Fuse (FGB 4 A; internal use) ...............................	1

6 MEMORY OPERATION ...............................	35–38
n Memory channels ............................................	35
n Memory channel selection ..............................	35
n Memory channel programming .......................	36
n Frequency transferring ....................................	37
n Memory clearing .............................................	38
7 SCANS .........................................................	39–40
n Scan types ......................................................	39
n Preparation .....................................................	39
n Programmed scan operation ...........................	40
n Memory scan operation ..................................	40
8 SET MODE ...................................................	41–47
n General ...........................................................	41
n Quick set mode items ................................	42-43
n Initial set mode items .................................	44-47
9 INSTALLATION AND CONNECTIONS .......	48–51
n Opening the transceiver’s case .......................	48
n Optional bracket and carrying handle..............	48
n CR-338 HIGH STABILITY CRYSTAL UNIT .........	49
n UT-102 VOICE SYNTHESIZER UNIT .................	49
n UT-106 DSP RECEIVE UNIT .............................	50
n Optional IF filters .............................................	50
n AT-180 internal switch description ..................	51
10 MAINTENANCE ........................................	52–53
n Troubleshooting ..............................................	52
n Fuse replacement ...........................................	53
n Resetting the CPU ..........................................	53
11 SPECIFICATIONS ...........................................	54
12 OPTIONS ...................................................	55–56
13 CONTROL COMMAND .............................	57–58
n Remote jack (CI-V) information .......................	57
14 INTERNAL VIEWS ..........................................	59
n Top view ..........................................................	59
n Bottom view ....................................................	59
15 INSTALLATION NOTES .................................	60
n DECLARATION OF CONFORMITY ...............	61

q

w

e r

2 PANEL DESCRIPTION

n Front panel

Speaker	Function Display	@1	@0 !9 !8		!7
IC-718				V/M 1	A=B2		A/B 3
		MODE	FIL	TS
				MW 4	M-CL 5		M V 6
				SPL	SCN	8	VOX	9
				7
				NR .	ANF 0		F-INP
							ENT

q											!
	PWR	AF	RF/SQL	RIT	SHIFT			NB	COMP	SET	!
	MIC
	PHONES							P.AMP	ATT	TUNER	!
w						LOCK					!
								CH	ZDN	UP Y	!
	e		r t		y u	i	o	!0!1

q POWER SWITCH [PWR]

Push momentarily to turn power ON.

• Turn the optional DC power supply ON in advance.

Push for 1 sec. to turn power OFF.

While pushing and holding [SET], push [PWR] to enter the initial set mode. (p. 41)

w MICROPHONE CONNECTOR [MIC]

Accepts supplied or optional microphone.

•See p. 55 for appropriate microphones.

•See p. 8 for microphone connector information.

e HEADPHONE JACK [PHONES] (p. 11)

Accepts headphones (8 Ω).

•When headphones are connected, the internal speaker or connected external speaker does not function.

r AF CONTROL [AF] (inner control)

Varies the audio output level from the speaker.

t RF GAIN/SQUELCH CONTROL [RF/SQL]

(outer control; pgs. 20, 44)

Adjusts the squelch threshold level. The squelch removes noise output from the speaker (closed condition) when no signal is received.

•The squelch is available for all modes.

•The control can be set as the squelch plus RF gain controls or squelch control only (RF gain is fixed at maximum) in initial set mode.

y RIT 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. “ RIT ” appears on the display.

• The shift frequency range is ±1.2 kHz.

u IF SHIFT CONTROLS [SHIFT] (Outer control; p. 21)

Shifts the center frequency of the 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).

o MAIN DIAL

Changes the displayed frequency, selects quick/ initial set mode items, etc.

!0PREAMP SWITCH [P.AMP] (p. 21)

Push momentarily to turn the preamp ON or OFF.

!1CH SWITCH [CH] (p. 35)

Push momentarily to turn the memory channel select function ON or OFF.

•[MEMO] blinks while memory channel select function is turned on.

•Push several times (or push and hold) [√ DN]/[UP ∫] until desired memory channel appears.

•After pushing [F-INP/ENT], push desired memory channel number from the keypad, then push [FINP/ ENT] again to select the memory channel directory.

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

!2MEMORY 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.

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

Push to toggle the 20 dB attenuator function ON and OFF.

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

Push momentarily to toggle the automatic antenna 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 circuit is bypassed automatically after 20 sec.

!5SET 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.

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

!7KEYPAD

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)

!8NOISE 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 pulsetype noise.

PANEL DESCRIPTION 2

Push [NB] for 1 sec to enter the noise blanker level setting condition.

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

Selects a quick tuning step or turns the quick tuning 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 enters tuning step set mode when pushed for 1 sec.

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

Push momentarily to toggle between the preprogrammed normal, wide and narrow IF filters for the selected operating mode.

@1MODE 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 between 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.

2 PANEL DESCRIPTION

n Front panel (continued)

V/M 1	A=B2		A/B 3
MODE FILTER TS
MW 4	M=CL 5		M V 6
7		8		9
SPL	SCN		VOX
NR .	ANF 0		F-INP
			ENT
NB	COMP		SET
P.AMP	ATT		TUNER
K
CH ZDN			UP Y

@2 V/M 1

@3 MW 4

@4 SPL7

@5 NR .

	#3 #2
	A=B	2	A/B	3	#1
	M=CL 5		M V 6		#0
	SCN8		VOX 9		@9
	ANF 0		F-INP		@8
					@7
			ENT

@6

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

Toggles the operating mode between VFO mode or memory mode when pushed.

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

Stores the displayed frequency and operating mode into the selected memory channel when pushed for 1 sec.

@4SPLIT SWITCH/7 [SPL•7] (p. 30)

Turns the split frequency operation ON or OFF when pushed.

@5NR 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.

@6ANF 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.

@7FRQUENCY 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)

@8SCAN 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.

@9VOX SWITCH/9 [VOX•9] (p. 27)

Turn the VOX function ON or OFF when pushed in SSB modes.

#0M≈V SWITCH/6 [MV•6] (p. 37)

Transfers the memory contents to VFO when pushed for 1 sec.

#1MEMORY CLEAR SWITCH/5 [M=CL•5] (p. 38) Clears the selected readout memory channel contents when pushed for 1 sec. in memory mode.

• [BLANK] appears above the memory channel number.

#2VFO SELECT SWITCH/3 [A/B•3] (p. 16)

Toggles between VFO A or VFO B in VFO mode.

Toggles between transmission VFO and reception VFO during split operation.

#3VFO 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 equalized with the VFO A frequency and operating mode.

		PANEL DESCRIPTION 2
n Function display
!9	!8!7	!6
q
w
e		!5
r
t		!4
y		!3
		!2
u
i

	o	!0!1
	q LOCK INDICATOR (p. 19)	o SIGNAL/SQL/RF-GAIN METER
	Appears when the dial lock function is in use.	 Functions as an S-meter while receiving.
	w RECEIVE INDICATOR	 Functions as a Power, ALC or SWR meter while
		transmitting. (p. 26)
	Appears while receiving a signal or when the
	squelch is open.	!0VFO/MEMORY INDICATOR (p. 16)
	e TUNE INDICATOR	“VFO A” or “B” appears when VFO mode is
		selected.
	Appears while the automatic tuning function is	“MEMO” appears when memory mode is selected.
	activated.
	r TRANSMIT INDICATOR	!1MEMORY CHANNEL NUMBER READOUT (p. 35)
		Shows the selected memory channel number.
	Appears while transmitting.
	t FUNCTION INDICATORS	!2BLANK INDICATOR (p. 38)
		Shows that the displayed memory channel is not
	 “P.AMP” appears when antenna preamp is in	programmed.
	use.	• This indicator appears both in VFO and memory mode.
	 “ATT” appears when the attenuator function is in	!3SPLIT INDICATORS (p. 30)
	use.
	 “NB” appears when the Noise Blanker function	Appears when the split frequency operation is in
	is turned ON.	use.
	 “BK” appears when the semi break-in function is	!4RIT INDICATOR (p. 21)
	selected in quick set mode.
	 “F-BK” appears when the full break-in function	Appears when the RIT function is in use.
	activates in CW mode. (p. 31)	!5FREQUENCY READOUT
	 “VOX” appears when the VOX function is
	selected in quick set mode.	Shows the operating frequency.
	 “COM” appears when the speech compressor	!6REVERSE INDICATOR (p. 20)
	activates in SSB mode.
		Appears when the CW reverse or RTTY reverse
	 “SCAN” appears when the scan function is
		mode is selected.
	activated.

• Flashes when scan is paused.

y DSP UNIT INDICATOR

Appears when an optional UT-106 DSP unit is installed.

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

i NOISE REDUCTION INDICATOR (p. 23) Appears when the optional Noise Reduction function is in use.

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

“” appears when the wide IF filter is selected.

“ ” appears when the narrow IF filter is selected.

!8PROGRAMMABLE TUNING STEP INDICATORS

Appears when the programmable tuning step is selected.

!9MODE INDICATORS (p. 20)

Indicates the selected operating mode.

2 PANEL DESCRIPTION

n Rear panel

q		w		e

!0		o i u y					t r

q ANTENNA TERMINAL [ANT] (p. 10)

Connects a 50 Ω antenna with a PL-259 connector and a 50 Ω coaxial cable.

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

Accepts 13.8V DC through the supplied DC power cable.

u ELECTRONIC 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.

When connecting	( )
a straight key

Rear panel view

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

AUTOMATIC ANTENNA TUNER.

r CI-V REMOTE CONTROL JACK [REMOTE] (p. 57) Designed for use with a personal computer for remote operation of transceiver functions.

t EXTERNAL SPEAKER JACK [EXT SP] (p. 11) Connects an 8 Ω external speaker, if desired.

•When an external speaker is connected, the internal speaker does not function.

y ACCESSORY SOCKET [ACC] (p. 7)

Enables connection to external equipment such as an optional AT-180 AUTOMATIC ANTENNA TUNER, a TNC for data communications or a liner amplifier, etc.

	When connecting	(dot)
		(com)
	a paddle
		(dash)

i ALC INPUT JACK [ALC]

Connects to the ALC output jack of a non-Icom linear amplifier.

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

Goes to ground while transmitting to control external equipments such as a liner amplifier.

• Max. control level: 16 V DC/2 A

!0GROUND TERMINAL [GND] (p. 9)

Connects the terminal to ground.

PANEL DESCRIPTION 2

D ACC SOCKET INFORMATION

• ACC socket

ACC

PIN #

NAME

DESCRIPTION

SPECIFICATIONS

COLOR

1

8 V

Regulated 8 V output.

Output voltage

: 8 V ±0.3 V

brown

Output current

: Less than 10 mA

2

GND

Connects to ground.

red

Input/output pin.

Ground level

: –0.5 V to 0.8 V

Goes to ground when transmitting.

3

SEND

Input current

: Less than 20 mA

orange

When grounded, transmits.

4

BDT

Data line for the optional AT-180.

yellow

5

BAND

Band voltage output.

Output voltage

: 0 to 8.0 V

green

(Varies with amateur band)

13

6

ALC

ALC voltage input.

Control voltage

: –4 to 0 V

blue

9

10

11

12

Input impedance

: More than 10 kΩ

5

6

7

8

1

2

3

4

7

NC

purple

Rear panel

view

8

13.8 V

13.8 V output when power is ON.

Output current

: Max. 1 A

gray

9

TKEY

Key line for the AT-180.

white

10

FSKK

RTTY keying input.

Ground level

: –0.5 to 0.8 V

black

Input current

: Less than 10 mA

Input impedance

: 10 kΩ

11

MOD

Modulator input.

Input level

: Approx. 100 mV

pink

rms

12

AF

AF detector output.

Output impedance

: 4.7 kΩ

light

Fixed, regardless of [AF] position.

Output level

: 100 to 300 mV rms

blue

13

SQLS

Squelch output.

SQL open

: Less than 0.3 V/5 mA

light

Goes to ground when squelch opens.

SQL closed

: More than 6.0 V/100 µA

green

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

				4	2	5	q FSKK	t AF
							w GND	y SQLS
				1		3
					8		e SEND	u 13.8 V
				6		7
							r MOD	i ALC
	13
9	10	11	12	ACC 1
5	6	7	8
1	2	3	4				q 8 V	t ALC
				4	2	5
				1		3	w GND	y NC
							e SEND	u 13.8 V
				6		7
							r BAND

ACC 2

2 PANEL DESCRIPTION

n Microphone (HM-36)

q

w

q UP/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)

•MICROPHONE CONNECTOR

(Front view)

	i Main readout AF output
	(varies with [AF]/[BAL])
q Microphone input	u GND
	(Microphone ground)
w +8 V DC output	y GND (PTT ground)
e Frequency up/down	t PTT
	r Main readout squelch switch

w PTT SWITCH

Push and hold to transmit; release to receive.

	[MIC]	FUNCTION	DESCRIPTION
	PIN NO.
	w	+8 V DC output	Max. 10 mA
	e	Frequency up	Ground
		Frequency down	Ground through 470 Ω
	r	Squelch open	“LOW” level
		Squelch closed	“HIGH” level

CAUTION: DO NOT short pin 2 to ground as this can damage the internal 8 V regulator.

• HM-36 SCHEMATIC DIAGRAM

	MICROPHONE	MICROPHONE CABLE	MICROPHONE PLUG
	10µ + 4700p 2k
		+
MIC		0.33µ
ELEMENT		4700p
			q	u
			w	i y
	DOWN	UP	e r t
PTT	RECEIVE	470

TRANSMIT

		3
	INSTALLATION AND CONNECTIONS
n Unpacking	n Antenna connection

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

For a description and a diagram of accessory equipment included with the IC-718, see ‘Supplied accessories’ on p. 1 of this manual.

n Selecting a location

Select a location for the transceiver that allows adequate air circulation, free from extreme heat, cold, or vibrations, and away from TV sets, TV antenna elements, radios and other electro-magnetic sources.

The base of the transceiver has an adjustable stand for desktop use. Set the stand to one of two angles depending on your operating conditions.

n Grounding

To prevent electrical shock, television interference (TVI), broadcast interference (BCI) and other problems, 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 between the [GND] terminal and ground as short as possible.

R WARNING: NEVER connect the

[GND] terminal to a gas or electric pipe, since the connection could cause an explosion or electric shock.

For radio communications, the antenna is of critical importance, along with output power and sensitivity. Select antenna(s), such as a well-matched 50 Ω antenna, and feedline. 1.5:1 or better of Voltage Standing Wave Ratio (VSWR) is recommended for your desired band. Of course, the transmission line should be a coaxial cable.

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

PL-259 CONNECTOR INSTALLATION EXAMPLE

q						30 mm
Coupling ring				10 mm (soft solder)
w				10 mm				Soft
								solder
					1–2		mm

Slide the coupling ring down. Strip the cable jacket and soft solder.

Strip the cable as shown at left. Soft solder the center conductor.

e	solder	solder
		Slide	the	connector
		body on and solder it.
r		Screw	the	coupling
		ring	onto		the
		connector body.

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

Antenna SWR

Each antenna is tuned for a specified frequency range and SWR may be increased out-of-range. When the SWR is higher than approx. 2.0:1, the transceiver’s power drops to protect the final transistor. In this case, an antenna tuner is useful to match the transceiver and antenna. Low SWR allows full power for transmitting even when using the antenna tuner. The IC-718 has an SWR meter to monitor the antenna SWR continuously.

3 INSTALLATION AND CONNECTIONS

n Required connections

• Front panel

i718

MICROPHONES (p. 55)

	PWR	AF	RF/SQL	RIT	SHIFT
	MIC
	PHONES
					LOCK
HM-36	SM-20

	V/M 1	A=B2	A/B 3
MODE FIL	TS
	MW 4	M-CL 5	M V 6
	SPL7	SCN8	VOX 9
	NR .	ANF 0	F-INP
			ENT
	NB	COMP	SET
	P.AMP	ATT	TUNER
	CH ZDN		UP Y

• Rear panel

ANTENNA (p. 56)							DC POWER SUPPLY
[Example]: 1.8–30 MHz bands			AH-710				PS-85
						ft
					0.3
				;8
			.5	m
		24
	x.
ro
app

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.

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)

10

INSTALLATION AND CONNECTIONS 3

n Advanced connections

• Front panel

MIC

The AFSK modulation signal can be input from [MIC]. (p. 33)

IC-718

PWR	AF	RF/SQL	RIT	SHIFT
MIC
PHONES
				LOCK

	V/M 1	A=B2	A/B 3
MODE FIL	TS
	MW 4	M-CL 5	M V 6
	SPL7	SCN8	VOX 9
	NR .	ANF 0	F-INP
			ENT
	NB	COMP	SET
	P.AMP	ATT	TUNER
	CH	ZDN	UP Y

HEADPHONES

• Rear panel

[REMOTE] (p. 57)

Used for computer control and transceive operation.

AH-4 (p. 55)

with

AH-2b or long wire

ANTENNA (p. 13)

Connects a liner amprifier, etc.

ACC SOCKETS (p. 7)

[SEND], [ALC]

(p. 14)

Used for connecting a non-Icom linear amplifier.

EXTERNAL SPEAKER (p. 55)

SP-21, etc

11

3 INSTALLATION AND CONNECTIONS

n Power supply connections

Use an optional PS-85 DC POWER SUPPLY when operating 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 PS-85 DC POWER SUPPLY

PS-85

DC power socket

DC power cable

Connect to an AC outlet using the supplied AC cable.

CONNECTING NON-ICOM DC POWER SUPPLY

	DC power supply AC outlet
DC power	13.8 V 20 A
socket	_ +

AC cable

_black

Supplied	+red
DC power cable	20 A fuses

CONNECTING A VEHICLE BATTERY

NEVER connect to		NOTE: Use terminals for
a 24 V battery.		the cable connections.
_ black	+ red	Crimp
Grommet

	12 V	Solder
	battery

Supplied

DC power cable

Fuses

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

12

INSTALLATION AND CONNECTIONS 3

n Linear amplifier connections

CONNECTING THE IC-PW1

Remote control cable (supplied with the IC-PW1)

	To an	ACC cable (supplied with the IC-PW1)
	antenna ACC-1
			OPC-599 conversion cable
	ANT	REMOTE	(option)
			Coaxial cable
			INPUT1 (supplied with the IC-PW1)

	ACC	REMOTE
EXCITER
1	1&2

GND

13

9 10 11 12

5 6 7 8

1 2 3 4

GND

IC-PW1

AC outlet						IC-718
				Ground
(Non-European versions : 100–120/220–240 V
European version	: 230 V)

CONNECTING THE IC-4KL

Coaxial cable (supplied with the IC-4KL)

	ACC cable (supplied with the IC-4KL)	To an
		antenna

OPC-599 conversion cable (option)

ANT

ACC

ACC

	IC-4KL
	Remote	IC-4KL
	controller

IC-718

Remote control cable

	(supplied with the IC-4KL)
Ground	AC outlet (220–240 V)

13

3 INSTALLATION AND CONNECTIONS

CONNECTING A NON-ICOM LINER AMPLIFIER

R WARNING:

Set the transceiver output power and linear amplifier ALC output level referring t o t h e l i n e a r a m p l i f i e r instruction manual.

The ALC input level must be in the range 0 V to –4 V, and the transceiver does not accept positive voltage. Nonmatched ALC and RF power settings could cause a fire or ruin the linear amplifier.

To an

antenna

RF OUTPUT RF INPUT

SEND ALC

Non-Icom linear amplifier

50 Ω coaxial cable

ANT IC-718

SEND ALC

The specifications for the SEND relay are 16 V DC 2 A. If this level is exceeded, a large external relay must be used.

n External antenna tuners

CONNECTING THE AH-4 (p. 29)

Long wire or optional AH-2b

Coaxial cable (from the AH-4)

Control cable

IC-718	AH-4
Ground	Ground

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.

Coaxial cable supplied	ACC cable supplied with the AT-180		HF
with the AT-180			antenna
[ANT]	[ACC]	AT-180 [ACC]	one of two
			connectors

IC-718

13

9 10 11 12

5 6 7 8

1 2 3 4

Ground

14

FREQUENCY SETTING 4

n When first applying power (CPU resetting)

Before first applying power, make sure all connections required for your system are complete by referring 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.

q Make sure the transceiver power is OFF.

w While pushing and holding [∫ UP] and [√ DN], push [PWR] for 1 sec. to turn power ON.

•The internal CPU is reset.

•The transceiver displays its initial VFO frequencies when resetting is complete.

e All quick/initial set mode settings are returned to default values. (p. 41)

[PWR]

[Z] [Y]

Under cooler temperatures, the LCD may appear dark and unstable after turning power ON. This is normal and does not indicate any equipment malfunction.

	n Initial settings
	After resetting the transceiver, set controls and			CCW : counterclockwise
	switches as shown in the figure below.
		[METER]: Po
				[NB], [COMP]:
				OFF
	[POWER]: OFF			[P.AMP], [ATT],:
				OFF
		[AF]: Max. CCW		[LOCK]: OFF
			[RF/SQL]: 12 o'clock	[RIT]: Center
				[IF SHIFT]: Center
	Turn power ON, then check the display. If any of the
	following indicators appear, turn them OFF as follows:
	• Quick tuning step indicator “Z” : Push [TS].
	• 1 Hz frequency readout		: Push [TS] for 1 sec.
			(while quick tuning
			step is OFF)
	• RIT indicator “	RIT ”	: Center.
	• Split indicator “	”	: Push [SPL].

15

4 FREQUENCY SETTING

n VFO description

VFO is an abbreviation of Variable Frequency Oscillator, and traditionally refers to an oscillator.

The IC-718 VFO can store a frequency and an operating 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 frequency 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 memory mode, the last-used frequency and operating mode for that VFO appears.

[EXAMPLE]

VFO is selected.

MEMORY MODE (pgs. 35–38)

Each memory channel shows a frequency and operating mode like a VFO. Even if the frequency or mode is changed, the memory channel does not memorize the new frequency or operating mode.

When the memory channel is selected from another memory channel or VFO mode, the memorized frequency and operating mode appear.

[EXAMPLE]

Memory channel 1 is selected.

The frequency	The frequency
is changed.	is changed.

Memory mode	Another memory
is selected.	channel is selected.

VFO is selected	Memory channel 1
again.	is selected again.

Changed frequency (14.123 MHz) appears.

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

16

FREQUENCY SETTING 4

n Frequency setting

D Using the tuning dial

q Push [∫ UP] or [√ DN] one or more times to select the desired ham band.

w Select the desired operating mode with the mode switch. (p. 20).

e Rotate the tuning dial to set the desired frequency

• For general coverage receiver use

The IC-718 has a general coverage receiver band. q Push [∫ 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 frequency range (ham band), a band edge beep may be emitted (depends on initial set mode programming).

D Direct frequency entry with keypad

The transceiver has a keypad for direct frequency entry as described below.

q Push [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.

w Push [•] on the keypad.

e Push the numeral keys to enter the frequency digits below 1 MHz.

•If a key is mistakenly pushed, push [SET] (or any key except keypad) and start again from the beginning.

r Push [F-INP/ENT] to set the input frequency.

•When pushing [F-INP/ENT] after entering the MHz digits, zeros are automatically entered for the kHz digits.

[EXAMPLE]

•Start

F-INP

ENT

•To set to 21.025 MHz

A=B2 V/M 1	NR	ANF 0 A=B2 M=CL 5	F-INP
			ENT

•To set to 706 KHz (0.706 MHz)

ANF 0	NR	SPL7 ANF 0 M V 6	F-INP
			ENT

•To set to 7 MHz

	SPL	F-INP
		ENT
	7

•To change 14.195 to 14.850 MHz

NR	SCN8 M=CL 5	F-INP
		ENT

17

4 FREQUENCY SETTING

D Band 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 settings 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

D Band selection

All HF ham bands and a general coverage receiver band are included in the IC-718.

Z DN

Push [∫ UP]/[√ DN] to select the desired band.

• Pushing [∫ UP]/[√ DN] continuously scrolls through the

available bands. General (new)

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.

UP Y

General (old)

D Programmable 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

q Push [TS], the programmable tuning step indicator, “ ,” then appears above the 1 kHz.

•Rotating the tuning dial changes the frequency according to the set tuning step.

w Push [TS] for 2 sec. while the programmable tuning step indicator appears to enter the tuning step set mode.

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

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

t Rotate the tuning dial to change the frequency according to the set tuning step.

Programmable tuning step indicator

10 KHz tuning steps is selected.

18