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THE TRANSCEIVER

i7800

Instruction Manual

A-6328H-1EX-r

Printed in Japan

FOREWORD

Congratulations! You are the owner of the world’s most advanced amateur

HF/50 MHz transceiver— IC-7800. The IC-7800 is designed and built with

Icom’s superior technology and craftsmanship. With proper care, this prod-

uct should provide you with years of trouble-free operation.

We would like to take a few moments of your time to thank you for making

the IC-7800 your radio of choice, and hope you agree with Icom’s philoso-

phy of “technology first.” Many hours of research and development went

into the design of your IC-7800.

FEATURES

❍ Ultimate receiver performance: third-order intercept (IP3)

of +40 dBm (HF bands only), both main and sub

❍ Independent identical receiver circuits for main and sub

bands provide perfect no-compromise Dualwatch operation

❍ Built-in Baudot RTTY and PSK31 modulator/demodulator

and direct PC keyboard connection capability for RTTY

and PSK31 operation without a PC

❍ Upgraded real-time spectrum scope— center frequency

and fix frequency modes, plus mini-scope displays

IMPORTANT

READ THIS INSTRUCTION MANUAL CAREFULLY before at-

tempting to operate the transceiver.

SAVE THIS INSTRUCTION MANUAL. This manual contains im-

portant safety and operating instructions for the IC-7800.

EXPLICIT DEFINITIONS

TRADEMARKS

Icom, Icom Inc. and the logo are registered trademarks of Icom

Incorporated (Japan) in the United States, the United Kingdom, Germany,

France, Spain, Russia and/or other countries.

WORD DEFINITION

WARNING

Personal injury, fire hazard or electric shock may

occur.

CAUTION Equipment damage may occur.

NOTE

If disregarded, inconvenience only. No risk of person-

al injury, fire or electric shock.

PRECAUTIONS

R WARNING HIGH RF VOLTAGE! NEVER

attach an antenna or internal antenna connector during

transmission. This may result in an electrical shock or

burn.

R WARNING! NEVER operate the transceiver

with a headset or other audio accessories at high vol-

ume levels. Hearing experts advise against continuous

high volume operation. If you experience a ringing in

your ears, reduce the volume or discontinue use.

R CAUTION! NEVER change the internal set-

tings of the transceiver. This may reduce transceiver

performance and/or damage to the transceiver.

In particular, incorrect settings for transmitter circuits,

such as output power, idling current, etc., might dam-

age the expensive final devices.

The transceiver warranty does not cover any problems

caused by unauthorized internal adjustment.

R CAUTION! NEVER touch the transceiver top

cover when transmitting continuously for long periods.

The top cover may be hot.

R CAUTION! The transceiver weighs approx. 25 kg

(55 lb). Always have two people available to carry, lift

or turn over the transceiver.

R CAUTION! The line-voltage receptacle must be

near the transceiver and must be easily accessible.

Avoid extension cords.

R ACHTUNG! Die Steckdose muß nabe bei

diesem Gerät angebracht und zugänglich sein.

R NEVER let metal, wire or other objects protrude

into the transceiver or into connectors on the rear

panel. This may result in an electric shock.

R NEVER block any cooling vents on the top, rear

or bottom of the transceiver.

R NEVER expose the transceiver to rain, snow or

any liquids.

R NEVER install the transceiver in a place without

adequate ventilation. Heat dissipation may be reduced,

and the transceiver may be damaged.

R NEVER operate or touch the transceiver with wet

hands. This may result in an electric shock or damage

to the transceiver.

DO NOT

use chemical agents such as benzine or al-

cohol when cleaning the IC-7800, as they can damage

the transceiver’s surfaces.

DO NOT push the PTT switch when you don’t actu-

ally desire to transmit.

AVOID using or storing the transceiver in areas with

temperatures below ±0°C (+32°F) or above +50°C

(+122°F).

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 may overheat

the transceiver.

Always place unit in a secure place to avoid inadver-

tent use by children.

BE CAREFUL! If you use a linear amplifier, 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 manufacturers’ microphones have different pin

assignments, and connection to the IC-7800 may dam-

age the transceiver or microphone.

The LCD display may have cosmetic imperfections that

appear as small dark or light spots. This is not a mal-

function or defect, but a normal characteristic of LCD

displays.

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.

Turn [I/O] switch (on the rear panel) OFF and/or dis-

connect the AC power cable from the AC outlet when

you will not use the transceiver for long period of time.

For U.S.A. only

CAUTION: Changes or modifications to this device,

not expressly approved by Icom Inc., could void your

authority to operate this device under FCC regulations.

q AC power cable* ………………………………… 1

w Antenna jumper cables …………………………… 2

e Rack mounting handles ……………………… 1 pair

r Screws for rack mounting handles ………… 1 set

t CF (Compact Flash) memory card ……………… 1

y Stands ………………………………………… 1 pair

u Spare fuse (FGB 2 A) …………………………… 1

i RCA plugs ………………………………………… 2

o DC power plug …………………………………… 1

!0 2-conductor

⁄

″ plugs …………………………… 3

!1 3-conductor

⁄

″ plugs …………………………… 2

!2 3-conductor

⁄

″ plugs …………………………… 3

!3 ACC plugs (7-pin) ………………………………… 2

!4 ACC plugs (8-pin) ………………………………… 2

!5 Antenna connector caps ………………………… 4

*May differ from that shown according to version

iii

SUPPLIED ACCESSORIES

Section 1 PANEL DESCRIPTION

■ Front panel ……………………………………………………………… 1-2

■ Rear panel ……………………………………………………………… 1-12

■ LCD display …………………………………………………………… 1-14

■ Screen menu arrangement …………………………………………… 1-15

Section 2 INSTALLATION AND CONNECTIONS

■ Unpacking ……………………………………………………………… 2-2

■ Antenna jumper cable connection …………………………………… 2-2

■ Selecting a location …………………………………………………… 2-2

■ Rack mounting handle attachment …………………………………… 2-2

■ Grounding ……………………………………………………………… 2-3

■ Antenna connection …………………………………………………… 2-3

■ CF (Compact Flash) memory card …………………………………… 2-3

■ Required connections ………………………………………………… 2-4

D Front panel …………………………………………………………… 2-4

D Rear panel …………………………………………………………… 2-4

■ Advanced connections ………………………………………………… 2-5

D Front panel …………………………………………………………… 2-5

D Rear panel—1 ……………………………………………………… 2-5

TABLE OF CONTENTS

!1 !2 !3 !4 !5

yuio

D Rear panel—2 ……………………………………………………… 2-6

■ Linear amplifier connections …………………………………………… 2-7

D Connecting the IC-PW1/EURO …………………………………… 2-7

D Connecting a non-Icom linear amplifier …………………………… 2-7

■ Transverter jack information …………………………………………… 2-8

■ FSK and AFSK (SSTV) connections ………………………………… 2-8

■ Microphone connector information …………………………………… 2-9

■ Microphones (options) ………………………………………………… 2-9

D SM-20 ………………………………………………………………… 2-9

D HM-36 ………………………………………………………………… 2-9

■ Accessory connector information …………………………………… 2-10

Section 3 BASIC OPERATIONS

■ When first applying power (CPU resetting) ………………………… 3-2

■ Initial settings …………………………………………………………… 3-2

■ Main/Sub band selection ……………………………………………… 3-3

■ Selecting VFO/memory mode ………………………………………… 3-3

■ Selecting an operating band …………………………………………… 3-4

D Using the band stacking registers ………………………………… 3-4

■ Frequency setting ……………………………………………………… 3-5

D Tuning with the main dial …………………………………………… 3-5

D Direct frequency entry with the keypad …………………………… 3-5

D Quick tuning step …………………………………………………… 3-6

D Selecting “kHz” step ………………………………………………… 3-6

⁄4 tuning step function ……………………………………………… 3-6

D Selecting 1 Hz step ………………………………………………… 3-7

D Auto tuning step function …………………………………………… 3-7

D Band edge warning beep …………………………………………… 3-7

■ Operating mode selection ……………………………………………… 3-8

■ Volume setting ………………………………………………………… 3-9

■ RF gain adjustment …………………………………………………… 3-9

■ Squelch level adjustment ……………………………………………… 3-9

■ Meter indication selection …………………………………………… 3-10

D Multi-function digital meter ………………………………………… 3-10

D Meter type selection ……………………………………………… 3-11

■ Basic transmit operation ……………………………………………… 3-12

D Transmitting ………………………………………………………… 3-12

D Microphone gain adjustment ……………………………………… 3-12

D Drive gain adjustment ……………………………………………… 3-13

Section 4 RECEIVE AND TRANSMIT

■ Operating SSB ………………………………………………………… 4-2

D Convenient functions for receive ……………………………………4-2

D Convenient functions for transmit ……………………………………4-3

D About 5 MHz band operation (USA version only) …………………4-3

■ Operating CW …………………………………………………………… 4-4

D Convenient functions for receive ……………………………………4-4

D Convenient functions for transmit ……………………………………4-5

D About CW reverse mode ……………………………………………4-5

D About CW pitch control ………………………………………………4-5

D CW side tone function ………………………………………………4-5

D APF (Audio Peak Filter) operation …………………………………4-6

D About 137 kHz band operation (Europe, UK, Italy, Spain, France

versions only) …………………………………………………………4-6

■ Electronic keyer functions ……………………………………………… 4-7

TABLE OF CONTENTS

D Memory keyer screen …………………………………………………4-8

D Editing a memory keyer ………………………………………………4-9

D Contest number set mode …………………………………………4-10

D Keyer set mode ………………………………………………………4-11

■ Operating RTTY (FSK) ……………………………………………… 4-13

D Convenient functions for receive …………………………………4-14

D About RTTY reverse mode …………………………………………4-14

D Twin peak filter ………………………………………………………4-14

D Functions for the RTTY decoder indication ………………………4-15

D Setting the decoder threshold level ………………………………4-15

D RTTY memory transmission ………………………………………4-16

D Automatic transmission/reception setting …………………………4-16

D Editing RTTY memory ………………………………………………4-17

D RTTY decode set mode ……………………………………………4-18

D Data saving …………………………………………………………4-20

■ Operating PSK ………………………………………………………… 4-21

D Convenient functions for receive …………………………………4-22

D About BPSK and QPSK mode ……………………………………4-22

D Functions for the PSK decoder indication ………………………4-23

D Setting the decoder threshold level ………………………………4-23

D PSK memory transmission …………………………………………4-24

D Automatic transmission/reception setting …………………………4-24

D Editing PSK memory ………………………………………………4-25

D PSK decode set mode ………………………………………………4-26

D Data saving …………………………………………………………4-28

■ Operating AM ………………………………………………………… 4-29

D Convenient functions for receive …………………………………4-29

D Convenient functions for transmit …………………………………4-30

■ Operating FM ………………………………………………………… 4-31

D Convenient functions for receive …………………………………4-31

D Convenient functions for transmit …………………………………4-31

■ Repeater operation …………………………………………………… 4-32

D Repeater tone frequency setting …………………………………4-32

■ Tone squelch operation ……………………………………………… 4-33

■ Data mode (AFSK) operation ………………………………………… 4-34

Section 5 FUNCTIONS FOR RECEIVE

■ Spectrum scope screen ……………………………………………… 5-2

D Center mode ………………………………………………………… 5-2

D Fix mode ……………………………………………………………… 5-3

D Mini scope screen indication ……………………………………… 5-4

D Scope set mode ……………………………………………………… 5-4

■ Preamplifier ……………………………………………………………… 5-9

■ Attenuator ……………………………………………………………… 5-9

■ RIT function …………………………………………………………… 5-10

D RIT monitor function …………………………………………………5-10

■ AGC function …………………………………………………………… 5-11

D Selecting the preset value …………………………………………5-11

D Adjusting the AGC time constant …………………………………5-11

D Setting the AGC time constant preset value ………………………5-11

■ Twin PBT operation …………………………………………………… 5-12

■ IF filter selection ……………………………………………………… 5-13

D IF filter selection …………………………………………………… 5-13

D Filter passband width setting (except FM mode) ……………… 5-13

D Roofing filter selection ……………………………………………… 5-14

TABLE OF CONTENTS

D DSP filter shape …………………………………………………… 5-14

D Filter shape set mode ……………………………………………… 5-14

■ Dualwatch operation ………………………………………………… 5-16

■ Noise blanker ………………………………………………………… 5-17

D NB set mode ………………………………………………………… 5-17

■ Noise reduction ………………………………………………………… 5-18

■ Dial lock function ……………………………………………………… 5-18

■ Notch function ………………………………………………………… 5-19

■ Digital selector ………………………………………………………… 5-19

Section 6 FUNCTIONS FOR TRANSMIT

■ VOX function …………………………………………………………… 6-2

D Using the VOX function …………………………………………… 6-2

D Adjusting the VOX function ………………………………………… 6-2

D VOX set mode ……………………………………………………… 6-2

■ Break-in function ………………………………………………………… 6-3

D Semi break-in operation …………………………………………… 6-3

D Full break-in operation ……………………………………………… 6-3

■ ∂TX function …………………………………………………………… 6-4

D ∂TX monitor function ………………………………………………… 6-4

■ Monitor function ………………………………………………………… 6-4

■ Transmit filter width setting (SSB only) ……………………………… 6-5

■ Speech compressor (SSB only) ……………………………………… 6-5

■ Split frequency operation ……………………………………………… 6-6

■ Quick split function ……………………………………………………… 6-7

D Split lock function …………………………………………………… 6-7

Section 7 VOICE RECORDER FUNCTIONS

■ About digital voice recorder …………………………………………… 7-2

■ Recording a received audio …………………………………………… 7-3

D Basic recording ……………………………………………………… 7-3

D One-touch recording ………………………………………………… 7-3

■ Playing the recorded audio …………………………………………… 7-4

D Basic playing ………………………………………………………… 7-4

D One-touch playing …………………………………………………… 7-4

■ Protect the recorded contents ………………………………………… 7-5

■ Erasing the recorded contents ………………………………………… 7-5

■ Recording a message for transmit …………………………………… 7-6

D Recording …………………………………………………………… 7-6

D Confirming a message for transmit ………………………………… 7-6

■ Programming a memory name ……………………………………… 7-7

■ Sending a recorded message ………………………………………… 7-8

D Transmit level setting ……………………………………………… 7-8

■ Voice set mode ………………………………………………………… 7-9

■ Saving a voice memory into the CF card …………………………… 7-10

D Saving the received audio memory ……………………………… 7-10

D Saving the TX memory …………………………………………… 7-10

Section 8 MEMORY OPERATION

■ Memory channels ……………………………………………………… 8-2

■ Memory channel selection …………………………………………… 8-2

D Using the [Y]/[Z] keys ……………………………………………… 8-2

D Using the keypad …………………………………………………… 8-2

■ Memory list screen ……………………………………………………… 8-3

D Selecting a memory channel using the memory list screen …… 8-3

D Confirming programmed memory channels ……………………… 8-3

TABLE OF CONTENTS

■ Memory channel programming ……………………………………… 8-4

D Programming in VFO mode ………………………………………… 8-4

D Programming in memory mode …………………………………… 8-4

■ Frequency transferring ………………………………………………… 8-5

D Transferring in VFO mode ………………………………………… 8-5

D Transferring in memory mode ……………………………………… 8-5

■ Memory names ………………………………………………………… 8-6

D Editing (programming) memory names …………………………… 8-6

■ Memory clearing ………………………………………………………… 8-6

■ Memo pads ……………………………………………………………… 8-7

D Writing frequencies and operating modes into memo pads …… 8-7

D Calling up a frequency from a memo pad ………………………… 8-7

Section 9 SCANS

■ Scan types ……………………………………………………………… 9-2

■ Preparation ……………………………………………………………… 9-2

■ Voice squelch control function ………………………………………… 9-3

■ Scan set mode ………………………………………………………… 9-3

■ Programmed scan operation ………………………………………… 9-4

■ ∂F scan operation ……………………………………………………… 9-4

■ Fine programmed scan/∂F scan ……………………………………… 9-5

■ Memory scan operation ………………………………………………… 9-6

■ Select memory scan operation ……………………………………… 9-6

■ Setting select memory channels ……………………………………… 9-7

D Setting in scan screen ……………………………………………… 9-7

D Setting in memory list screen ……………………………………… 9-7

D Erasing the select scan setting …………………………………… 9-7

■ Tone scan ……………………………………………………………… 9-8

Section 10 ANTENNA TUNER OPERATION

■ Antenna connection and selection ………………………………… 10-2

■ Antenna memory settings …………………………………………… 10-3

D Antenna type selection …………………………………………… 10-3

D Temporary memory ………………………………………………… 10-4

D Antenna selection mode …………………………………………… 10-4

■ Antenna tuner operation ……………………………………………… 10-5

D Tuner operation …………………………………………………… 10-5

D If the tuner cannot tune the antenna …………………………… 10-6

Section 11 CLOCK AND TIMERS

■ Time set mode ………………………………………………………… 11-2

■ Daily timer setting ……………………………………………………… 11-3

■ Setting sleep timer …………………………………………………… 11-4

■ Timer operation ………………………………………………………… 11-4

Section 12 SET MODE

■ Set mode description ………………………………………………… 12-2

D Set mode operation ………………………………………………… 12-2

D Screen arrangement ……………………………………………… 12-3

■ Level set mode ………………………………………………………… 12-4

■ ACC set mode ………………………………………………………… 12-6

■ Display set mode …………………………………………………… 12-11

■ Miscellaneous (Others) set mode ………………………………… 12-14

■ CF card set menu …………………………………………………… 12-22

D CF card set screen arrangement ……………………………… 12-22

D Save option set mode …………………………………………… 12-23

vii

TABLE OF CONTENTS

viii

D Load option set mode …………………………………………… 12-24

■ File saving …………………………………………………………… 12-25

■ File loading …………………………………………………………… 12-26

■ Changing the file name ……………………………………………… 12-27

■ Deleting a file ………………………………………………………… 12-28

■ Formatting the CF card ……………………………………………… 12-28

Section 13 MAINTENANCE

■ Troubleshooting ……………………………………………………… 13-2

D Transceiver power ………………………………………………… 13-2

D Transmit and receive ……………………………………………… 13-2

D Scanning …………………………………………………………… 13-3

D Display ……………………………………………………………… 13-3

■ Main dial brake adjustment ………………………………………… 13-3

■ Voice synthesizer operation ………………………………………… 13-3

■ SWR reading …………………………………………………………… 13-4

■ Screen type and font selections …………………………………… 13-4

■ Frequency calibration (approximate) ……………………………… 13-5

■ Opening the transceiver’s case ……………………………………… 13-6

■ Clock backup battery replacement ………………………………… 13-6

■ Fuse replacement …………………………………………………… 13-7

■ Resetting the CPU …………………………………………………… 13-7

■ About protection indications ………………………………………… 13-8

■ Screen saver function ………………………………………………… 13-8

Section 14 CONTROL COMMAND

■ Remote jack (CI-V) information ……………………………………… 14-2

D CI-V connection example ………………………………………… 14-2

D Data format ………………………………………………………… 14-2

D Command table …………………………………………………… 14-9

D To send/read memory contents …………………………………… 14-9

D Band stacking register …………………………………………… 14-9

D Codes for memory keyer contents ……………………………… 14-9

D Codes for memory name, opening message

and clock 2 name contents ……………………………………… 14-9

D Offset frequency setting ………………………………………… 14-10

D Repeater tone/tone squelch frequency setting ………………… 14-10

D SSB transmission passband width setting …………………… 14-10

D Color setting ……………………………………………………… 14-10

D Bandscope edge frequency setting …………………………… 14-10

D Data mode with filter width setting ……………………………… 14-10

D Antenna memory setting ………………………………………… 14-10

Section 15 SPECIFICATIONS AND OPTIONS

■ Specifications ………………………………………………………… 15-2

D General ……………………………………………………………… 15-2

D Transmitter ………………………………………………………… 15-2

D Receiver …………………………………………………………… 15-3

D Antenna tuner ……………………………………………………… 15-3

■ Options ………………………………………………………………… 15-4

TABLE OF CONTENTS

Section 16 UPDATING THE FIRMWARE

■ General ………………………………………………………………… 16-2

■ Caution ………………………………………………………………… 16-2

■ Preparation …………………………………………………………… 16-3

D Firmware and firm utility …………………………………………… 16-3

D File downloading …………………………………………………… 16-3

■ Firmware update— CF memory card ……………………………… 16-4

■ Firmware update— PC ……………………………………………… 16-6

D Connections ………………………………………………………… 16-6

D IP address setting ………………………………………………… 16-7

D Updating from the PC ……………………………………………… 16-8

TABLE OF CONTENTS

1-1

PANEL DESCRIPTION Section 1

■ Front panel ……………………………………………………………… 1-2

■ Rear panel ……………………………………………………………… 1-12

■ LCD display …………………………………………………………… 1-14

■ Screen menu arrangement …………………………………………… 1-15

1-2

■ Front panel

q POWER SWITCH [POWER] (p. 3-2)

➥ Push to turn the transceiver power ON.

• The [POWER] indicator above this switch lights green

when powered ON.

➥ Push for 1 sec. to turn the transceiver power

OFF.

• The [POWER] indicator lights orange when the trans-

ceiver is OFF when the internal power supply is

switched ON.

w TRANSMIT SWITCH [TRANSMIT]

Selects transmitting or receiving.

• The [TX] indicator lights red while transmitting and the

[RX] indicator lights green when the squelch is open.

e ANTENNA TUNER SWITCH [TUNER] (p. 10-5)

➥ Turns the internal antenna tuner ON and OFF

(bypass) when pushed momentarily.

• The [TUNER] indicator above this switch lights green

when the tuner is turned ON, goes off when tuner is

turned OFF (bypassed).

➥ Tunes the antenna tuner manually when pushed

for 1 sec.

• The [TUNER] indicator blinks red during manual tun-

ing.

• When the tuner cannot tune the antenna, the tuning

circuit is bypassed automatically after 20 sec.

r TIMER SWITCH [TIMER] (p. 11-4)

➥ Turns the sleep or daily timer function ON and

OFF.

• The [TIMER] indicator above this switch lights green

when the timer is in use.

➥ Enters timer set mode when pushed for 1 sec.

t HEADPHONE JACK [PHONES]

Accepts standard stereo headphones.

• Output power: 50 mW with an 8 Ω load.

• When headphones are connected, the internal speaker

or connected external speaker does not function.

y ELECTRONIC KEYER JACK [ELEC-KEY] (p. 2-4)

Accepts a paddle to activate the internal electronic

keyer for CW operation.

• You can select internal electronic keyer, bug-key or

straight key operation in keyer set mode. (p. 4-12)

• A straight key jack is located on the rear panel. See

[KEY] on p. 1-13.

• Keyer polarity (dot and dash) can be reversed in keyer

set mode. (p. 4-12)

• 4-channel memory keyer is available for your conve-

nience. (p. 4-8)

u MICROPHONE CONNECTOR [MIC]

Accepts an optional microphone.

• See p. 15-4 for appropriate microphones.

• See p. 2-9 for microphone connector information.

(dot)

(com)

(dash)

Turn the internal power supply ON in advance. The

internal power supply switch is located on the rear

panel. (p. 3-2)

PANEL DESCRIPTION

io !0 !1 !2 !3

!4 !5 !6

!7 !8

1-3

i RF POWER CONTROL [RF PWR] (p. 3-12)

Continuously varies the RF output power from min-

imum (5 W*) to maximum (200 W*).

*AM mode: 5 W to 50 W

o MIC GAIN CONTROL [MIC]

Adjusts microphone input gain.

• The transmit audio tone in SSB, AM and FM modes can

be adjusted independently in set mode. (p. 12-4)

✔

How to set the microphone gain.

Set the [MIC] control so that the ALC meter sometimes

swings during normal voice transmission in SSB, AM or FM

mode.

!0 VOX/BREAK-IN SWITCH [VOX/BK-IN]

➥ Push to turn the VOX function ON and OFF dur-

ing SSB, AM and FM mode operation. (p. 6-2)

➥ Push to turn the break-in function ON (semi-break-

in, full-break-in)

and OFF during CW mode opera-

tion. (p. 6-3)

➥ Push for 1 sec. to enter VOX set mode. (p. 6-2)

✔

What is the VOX function?

The VOX function (voice operated transmission) starts trans-

mission without pushing the transmit switch or PTT switch

when you speak into the microphone; then, automatically re-

turns to receive when you stop speaking.

✔

What is the break-in function?

The break-in function switches transmit and receive with CW

keying. Full break-in (QSK) can monitor the receive signal

during keying.

!1 ELECTRONIC CW KEYER SPEED CONTROL

[KEY SPEED] (p. 4-4)

Adjusts the internal electronic CW keyer’s speed.

• 6 wpm (min.) to 60 wpm (max.) can be set.

!2 BREAK-IN DELAY CONTROL [DELAY] (p. 6-3)

Adjusts the transmit-to-receive switching delay time

for CW semi-break-in operations.

!3 MONITOR SWITCH [MONI] (p. 6-4)

Monitors your transmitted IF signal.

• The CW sidetone functions regardless of [MONI] switch

setting in CW mode.

• The [MONI] indicator above this switch lights green

while the function is activated.

!4 MEMORY CARD SLOT [CF CARD] (p. 2-3)

Insert the supplied CF (Compact Flash) memory

card for both reading/storing a wide variety of the

transceiver’s information and data.

• The indicator beside the slot lights or blinks when the

transceiver reads or writes to the memory card.

• Push the eject button to remove the memory card.

!5 MONITOR GAIN CONTROL [MONI GAIN] (p. 6-4)

Adjusts the transmit IF signal monitor level.

!6 COMPRESSION LEVEL CONTROL [COMP]

(p. 6-5)

Adjusts the speech compression level in SSB.

!7 DRIVE GAIN CONTROL [DRIVE] (p. 3-13)

Adjusts the transmitter level at the driver stage. Ac-

tivate in all modes

(except SSB with [COMP] OFF).

!8 VOX GAIN CONTROL [VOX GAIN] (p. 6-2)

Adjusts the transmit/receive switching threshold

level for VOX operation.

Low

sensitivity

High

sensitivity

Push

Decreases

Increases

Push

Compression

gain decreases

Compression

gain increases

Push

Monitor gain

decreases

Monitor gain

increases

Push

Long delay for

slow speed keying

Short delay for

high speed keying

Max.

60 wpm

Min.

6 wpm

Recommended level for

an Icom microphone

Decreases Increases

Increases

Decreases

PANEL DESCRIPTION

1-4

■ Front panel (continued)

!9 AGC CONTROL [AGC] (for MAIN band; p. 5-11)

@0 AGC CONTROL [AGC] (for SUB band; p. 5-11)

Adjusts the continuously-variable AGC circuit time

constant.

• To use [AGC] control, push the appropriate band’s

[AGC VR] ([AGC VR] indicator lights).

@1 AGC VOLUME SWITCH [AGC VR]

(for MAIN band; p. 5-11)

@2 AGC VOLUME SWITCH [AGC VR]

(for SUB band; p. 5-11)

➥ Push to toggle [AGC] control usage ON and OFF.

• Use [AGC] control to set the AGC time constant when

switched ON.

• The [AGC VR] indicator above this switch lights

green when the control is ON.

➥ Turns the AGC function OFF when pushed for

1 sec.

@3 AF CONTROL [AF] (inner control; for SUB band)

@4 AF CONTROL [AF] (inner control; for MAIN band)

Varies the audio output level of the speaker or

headphones.

@5 RF GAIN CONTROL [RF] (outer control; for MAIN

band; p. 3-9)

@6 RF GAIN CONTROL [RF] (outer control; for SUB

band; p. 3-9)

Adjusts the RF gain level.

While rotating the RF gain control, you may hear

noise. This comes from the DSP unit and does

not indicate a malfunction.

@7 SQUELCH CONTROL [SQL] (outer control; for

MAIN band; p. 3-9)

@8 SQUELCH CONTROL [SQL] (outer control; for

SUB band; p. 3-9)

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 particularly effective for FM. It is also

available for other modes.

• 11 to 12 o’clock position is recommended for any set-

ting of the [SQL] control.

Deep

S-meter

squelch

Noise squelch

Squelch

is open.

Squelch

threshold

Shallow

Sensitivity

increases

Sensitivity

decreases

Audio output

increases

Audio output

decreases

Slow

Fast

PANEL DESCRIPTION

#0 #1@9

#3 #4

@7 @8

1-5

@9 MULTI-FUNCTION SWITCHES

Push to select the functions indicated in the LCD

display to the right of these switches.

• Functions vary depending on the operating condition.

➥ Selects the antenna connector from

ANT1, ANT2, ANT3 and ANT4 when

pushed. (p. 10-2)

➥ Displays antenna selection memory

when pushed for 1 sec.

• When the receive antenna is activated, the

antenna which is connected to [ANT4] is

used for receive only.

When a transverter is in use, this [ANT]

does not function and ‘TRV’ appears.

➥ Selects RF power (Po), SWR, ALC,

COMP, VD or ID metering during transmit.

(p. 3-10)

➥ Switches the multi-function digital meter

ON and OFF when pushed for 1 sec.

(p. 3-10)

➥ Selects one of 2 receive RF preamps or

bypasses them. (p. 5-9)

• “P. AMP1” activates 10 dB preamp.

•

“P. AMP2” activates 16 dB high-gain preamp.

✔

What is the preamp?

The preamp amplifies received signals in the front end cir-

cuit to improve S/N ratio and sensitivity. Select “P. AMP1” or

“P. AMP2” when receiving weak signals.

➥ Selects 6 dB, 12 dB or 18 dB attenuator

when pushed. (p. 5-9)

➥ Selects 3 dB, 6 dB, 9 dB, 12 dB, 18 dB,

or 21 dB attenuator when pushed for

1 sec. (p. 5-9)

✔

What is the attenuator?

The attenuator prevents a desired signal from distorting

when very strong signals are near the desired frequency, or

when very strong electric fields, such as from a broadcast-

ing station, are near your location.

➥ Activates and selects fast, middle or slow

AGC time constant when pushed. (p. 5-

11)

• In FM mode, only “FAST” is available.

➥ Enters the AGC set mode when pushed

for 1 sec. (p. 5-11)

AGC time constant can be set between 0.1 to

8.0 sec.

(depends on mode), or turned OFF. When

AGC is “OFF,” the S-meter does not function.

✔

What is the AGC?

The AGC controls receiver gain to produce a constant audio

output level, even when the received signal strength varies

dramatically. Select “FAST” for tuning and then select “MID”

or “SLOW” depending on the receiving condition.

➥ Turns the speech compressor ON and

OFF in SSB mode. (p. 6-5)

➥ Switches the narrow, middle or wide

compression when pushed for 1 sec.

✔

What is the speech compressor?

The speech compressor compresses the transmitter audio

input to increase the average audio output level, to increase

talk power. This function is effective for long-distance com-

munication or when propagation conditions are poor.

➥ Turns the

⁄4

-speed tuning function ON

and OFF in SSB data, CW, RTTY and

PSK modes. (p. 3-6)

•

⁄4 function sets dial rotation to

⁄4 of normal

speed for fine tuning.

➥ Switches between the tone encoder,

tone squelch function and no-tone oper-

ation when pushed in FM mode. (pgs. 4-

32, 4-33)

➥ Enters the tone set mode when pushed

for 1 sec. in FM mode. (pgs. 4-32, 4-33)

➥ Switches the voice squelch control func-

tion ON and OFF; useful for scanning.

(p. 9-3)

#0 TRANSMIT INDICATOR [TX] (for MAIN band)

#1 TRANSMIT INDICATOR [TX] (for SUB band)

Lights red while transmitting.

• SUB band’s [TX] indicator lights only when in split oper-

ation.

#2 ANTI VOX CONTROL [ANTI VOX] (p. 6-2)

Adjusts the VOX deactivate level to prevent un-

wanted VOX activation from the speaker audio.

#3 LCD CONTRAST CONTROL [CONTRAST]

Adjusts the LCD contrast.

#4 LCD BRIGHTNESS CONTROL [BRIGHT]

Adjusts the LCD brightness.

Dark

Bright

Push

Low

contrast

High

contrast

Push

Decreases

cut-off level

Increases

cut-off level

Push

PANEL DESCRIPTION

1-6

■ Front panel (continued)

#5 NOISE REDUCTION SWITCH [NR] (for MAIN

band; p. 5-18)

#6 NOISE REDUCTION SWITCH [NR] (for SUB band;

p. 5-18)

Push to switch the DSP noise reduction ON and

OFF.

• The [NR] indicator above this switch lights green when

the function is activated.

#7 NOISE REDUCTION LEVEL CONTROL [NR]

(inner control; for SUB band; p. 5-18)

#8 NOISE REDUCTION LEVEL CONTROL [NR]

(inner control; for MAIN band; p. 5-18)

Adjusts the DSP noise reduction level when the

noise reduction is in use. Set for maximum read-

ability.

• To use this control, push the appropriate band’s [NR].

#9 NOISE BLANKER CONTROL [NB] (outer control;

for MAIN band; p. 5-17)

$0 NOISE BLANKER CONTROL [NB] (outer control;

for SUB band; p. 5-17)

Adjust the noise blanker threshold level.

• To use this control, push appropriate band’s [NB] switch.

$1 NOISE BLANKER SWITCH [NB] (for MAIN band;

p. 5-17)

$2 NOISE BLANKER SWITCH [NB] (for SUB band;

p. 5-17)

➥ Switches the noise blanker ON and OFF when

pushed. The noise blanker reduces pulse-type

noise such as that generated by automobile igni-

tion systems. This function cannot be used for

FM, or non-pulse-type noise.

• The [NB] indicator above this switch lights green

while the function is activated.

➥ Enters blank-width set mode when pushed for

1 sec.

$3 RECEIVE INDICATOR [RX] (for MAIN band)

$4 RECEIVE INDICATOR [RX] (for SUB band)

Lights green while receiving a signal and when the

squelch is open.

LOCK INDICATOR [LOCK] (for MAIN band; p. 5-18)

$6 LOCK INDICATOR [LOCK] (for SUB band; p. 5-18)

Lights when the dial lock function is activated.

$7 SPLIT OPERATION INDICATOR [SPLIT]

Lights during split frequency operation.

$8 LCD FUNCTION DISPLAY (p. 1-14)

Shows the operating frequency, function switch

menus, spectrum scope screen, memory channel

screen, set mode settings, etc.

Deep

Shallow

Increases

Decreases

PANEL DESCRIPTION

$1 $2

$5$3 $6 $9$4$7 $8

%0 %1 %3 %4 %6%2 %5

1-7

$9 MEMORY UP/DOWN SWITCHES [

]/[

] (p. 8-2)

Push to select the desired memory channel.

• Memory channels can be selected both in VFO and

memory modes.

%0 LCD FUNCTION SWITCHES [F-1]–[F-7]

Push to select the function indicated in the LCD dis-

play above these switches.

• Functions vary depending on the operating condition.

%1 MODE SWITCHES

Selects the desired mode. (p. 3-8)

• Announces selected mode via the speech synthesizer.

(p. 12-16)

➥ Selects USB and LSB modes alternately.

➥ Selects CW and CW-R (CW reverse)

modes alternately.

➥ Switches between RTTY and PSK

mode.

➥ Switches RTTY and RTTY-R (RTTY re-

verse)

mode when pushed for 1 sec. in

RTTY mode.

➥ Switches PSK and PSK-R (PSK reverse)

mode when pushed for 1 sec. in PSK

mode.

➥ Selects AM and FM modes alternately.

➥ Selects SSB, AM or FM data mode

(USB-

D, LSB-D, AM-D, FM-D)

when pushed in

SSB, AM or FM mode, respectively.

➥ Switches D1, D2 and D3 when pushed

for 1 sec.

%2 MINI SPECTRUM SCOPE SWITCH [M.SCOPE]

(p. 5-4)

Turns the mini spectrum scope screen ON and OFF.

• The mini spectrum scope screen can be displayed with

another screen, such as memory or set mode screen,

simultaneously.

%3 VOICE MEMORY RECORD SWITCH [REC]

(p. 7-3)

➥ Records the received signal for the preset time

period when pushed.

• After the preset time has passed, stops recording au-

tomatically.

➥ Records the received signal until cancelling the

record when pushed for 1 sec.

• Push this switch momentarily to stops recording.

• The memory records the latest 30 sec. of audio.

%4 VOICE MEMORY PLAY BACK SWITCH [PLAY]

(p. 7-4)

➥ Plays back the previously recorded audio for the

preset time period when pushed.

➥ Plays back all of the previously recorded audio

when pushed for 1 sec.

%5 EXIT/SET SWITCH [EXIT/SET]

➥ Push to exit, or return to the previous screen in-

dication during spectrum scope, memory, scan or

set mode screen display.

➥ Displays set mode menu screen when pushed

for 1 sec.

%6 TRANSMIT FREQUENCY CHECK SWITCH [XFC]

(p. 6-6)

Monitors the transmit frequency (including ∂TX fre-

quency offset)

when pushed and held during split fre-

quency operation.

• While pushing this switch, the transmit frequency can be

changed with the main dial, keypad, memo pad or

[Y]/[Z] switches.

• When the split lock function is turned ON, pushing [XFC]

cancels the dial lock function. (p. 6-7)

PANEL DESCRIPTION

1-8

■ Front panel (continued)

%7 MEMO PAD-WRITE SWITCH [MP-W] (p. 8-7)

Programs the selected readout frequency and op-

erating mode into a memo pad.

• The 5 most recent entries remain in memo pads.

• The memo pad capacity can be expanded from 5 to 10

in set mode. (p. 12-16)

%8 VFO/MEMORY SWITCH [V/M]

➥ Switches the selected readout operating mode

between the VFO and memory when pushed.

(pgs. 3-3, 8-2)

➥ Transfers the memory contents to VFO when

pushed for 1 sec. (p. 5-5)

%9 KEYPAD

➥ Pushing a key selects the operating band.

• [GENE•.] selects the general coverage band.

➥ Pushing the same key 2 or 3 times calls up other

stacked frequencies in the band. (p. 3-4)

• Icom’s triple band stacking register memorizes 3 fre-

quencies in each band.

➥ After pushing [F-INP•ENT], enters a frequency or

memory channel. Pushing [F-INP•ENT] or [Y/[Z]

is necessary to end. (pgs. 3-5, 8-2)

• e.g. to enter 14.195 MHz, push [F-INP] [1.8•1] [10•4]

[GENE •] [1.8•1] [28•9] [14•5] [F-INP•

ENT].

^0 MEMORY WRITE SWITCH [MW] (p. 8-4)

Stores the selected readout frequency and operat-

ing mode into the displayed memory channel when

pushed for 1 sec.

• This function is available both in VFO and memory

modes.

^1 MEMO PAD-READ SWITCH [MP-R] (p. 8-7)

Each push calls up a frequency and operating mode

in a memo pad. The 5 (or 10) most recently pro-

grammed frequencies and operating modes can be

recalled, starting from the most recent.

• The memo pad capacity can be expanded from 5 to 10

in set mode. (p. 12-16)

FILTER SWITCH [FILTER] (for MAIN band; p. 5-13)

^3 FILTER SWITCH [FILTER] (for SUB band; p. 5-13)

➥ Selects one of 3 IF filter settings.

➥ Enters the filter set screen when pushed for

1 sec.

^4 AUDIO PEAK FILTER/TWIN PEAK FILTER

SWITCH [APF/TPF] (for MAIN band)

^5 AUDIO PEAK FILTER/TWIN PEAK FILTER

SWITCH [APF/TPF] (for SUB band)

➥ Push to turn the audio peak filter ON and OFF

during CW mode operation. (p. 4-6)

➥ Push to turn the twin peak filter ON and OFF dur-

ing RTTY mode operation. (p. 4-14)

• “ ” appears when audio peak filter is in use.

• “ ” appears when twin peak filter is in use.

➥ During CW mode operation, push for 1 sec. to

select the APF passband width from 80, 160 and

320 Hz. (p. 4-6)

TPF

APF

PANEL DESCRIPTION

%7 %8 ^0 ^1%9

&0 &8&1 &5&4&2 &6 &3 &7&9

^2 ^3

1-9

^6 NOTCH SWITCH [NOTCH] (for SUB band; p. 5-19)

NOTCH SWITCH [NOTCH] (for MAIN band; p. 5-19)

➥ Switches the notch function between auto, man-

ual and OFF in SSB and AM modes.

➥ Turns the manual notch function ON and OFF

when pushed in CW, RTTY and PSK31 mode.

➥ Turns the auto notch function ON and OFF when

pushed in FM mode.

• “ ” appears when auto notch is in use.

• “ ” appears when manual notch is in use.

➥ Switches the manual notch characteristics from

wide, middle and narrow when pushed for 1 sec.

✔

What is the notch function?

The notch function eliminates unwanted CW or AM carrier

tones while preserving the desired voice signal. The DSP cir-

cuit automatically adjusts the filtering frequency to effectively

eliminate unwanted tones.

^8 DUALWATCH SWITCH [DUALWATCH] (p. 5-16)

➥ Turns the dualwatch function ON and OFF when

pushed.

➥ Turns the dualwatch function ON and equalizes

the main/sub readout frequency to the sub/main

readout when pushed for 1 sec.

(Quick dualwatch

function)

• The quick dualwatch function can be turned OFF

using set mode. (p. 12-14)

^9 SPLIT SWITCH [SPLIT] (p. 6-6)

➥ Turns the split function ON and OFF when

pushed.

➥ Turns the split function ON. When pushed for

1 sec. in non-FM modes, equalizes the sub read-

out frequency to the main readout and sets the

sub readout for frequency input. (Quick split func-

tion)

• The offset frequency is shifted from the main readout

frequency in FM mode. (p. 12-15)

• The quick split function can be turned OFF using set

mode. (p. 12-15)

➥ Turns the split function ON and shifts the sub

readout frequency after inputting an offset.

&0 MAIN BAND ACCESS SWITCH [MAIN]

Selects the main readout.

• The main readout frequency is clearly displayed. The

sub readout functions only during split operation or du-

alwatch.

&1 MAIN/SUB EQUALIZING SWITCH [M=S]

Equalizes the sub readout frequency to the main

readout frequency when pushed for 1 sec.

&2 AUTOMATIC TUNING SWITCH [AUTO TUNE]

(for MAIN band)

&3 AUTOMATIC TUNING SWITCH [AUTO TUNE]

(for SUB band)

Turns the automatic tuning function ON and OFF in

CW and AM modes.

&4 MAIN DIAL

Changes the displayed frequency (main band), se-

lects set mode setting, etc.

&5 MAIN/SUB CHANGE SWITCH [CHANGE]

Switches the frequency and selected memory

channel between main and sub readouts when

pushed.

• Switches between transmit frequency and receive fre-

quency when the split frequency function is ON. (p. 6-6)

&6 LOCK SWITCH [LOCK] (for MAIN band; p. 5-18)

&7 LOCK SWITCH [LOCK] (for SUB band; p. 5-18)

Push to switch the dial lock function ON and OFF.

&8 SUB BAND ACCESS SWITCH [SUB]

Selects the sub readout.

• The sub readout frequency is clearly displayed. The

main readout functions only during split operation or du-

alwatch.

&9 SUB DIAL

Changes the displayed frequency in sub band.

IMPORTANT!

When receiving a weak signal, or receiving a sig-

nal with interference, the automatic tuning func-

tion may tune the receiver to an undesired signal.

PANEL DESCRIPTION

1-10

■ Front panel (continued)

*0 RIT/

∂∂

TX CONTROL [RIT/

∂∂

TX] (pgs. 5-10, 6-4)

Shifts the receive and/or transmit frequency without

changing the transmit and/or receive frequency.

• Rotate the control clockwise to increase the frequency,

or rotate the control counterclockwise to decrease the

frequency. The RIT or ∂TX functions must be ON.

• The shift frequency range is ±9.999 kHz in 1 Hz steps

(or ±9.99 kHz in 10 Hz steps).

*1 PASSBAND TUNING CONTROLS [TWIN PBT]

(for MAIN band; p. 5-12)

*2 PASSBAND TUNING CONTROLS [TWIN PBT]

(for SUB band; p. 5-12)

Adjusts the receiver’s IF filter “passband width” via

the DSP.

• Passband width and shift frequency are displayed in the

multi-function display.

• Push [PBT CLEAR] for 1 sec. to clear the PBT settings.

• Variable range is set to half of the IF filter passband

width. 25 Hz steps and 50 Hz steps are available.

✔

What is the PBT control?

The PBT function electronically modifies the IF passband

width to reject interference. This transceiver uses the DSP

circuit for the PBT function.

*3 PBT CLEAR SWITCH [PBT CLEAR]

(for MAIN band; p. 5-12)

*4 PBT CLEAR SWITCH [PBT CLEAR]

(for SUB band; p. 5-12)

Clears the PBT settings when pushed for 1 sec.

• The [PBT CLEAR] indicator above this switch lights

when PBT is in use.

PBT1

PBT2

Low cutHigh cut Center

–+

Frequency

increases

Frequency

decreases

PANEL DESCRIPTION

(5 (6 (7 (8

*3*1 *2*4

1-11

*5 DIGITAL RF SELECTOR CONTROL [DIGI-SEL]

(for MAIN band; p. 5-19)

*6 DIGITAL RF SELECTOR CONTROL [DIGI-SEL]

(for SUB band; p. 5-19)

Adjusts the digital RF selector center frequency.

• The control can be reassigned as the audio peak filter

adjustment (p. 12-18)

*7 DIGITAL RF SELECTOR SWITCH [DIGI-SEL]

(for MAIN band; p. 5-19)

*8 DIGITAL RF SELECTOR SWITCH [DIGI-SEL]

(for SUB band; p. 5-19)

Turns the digital RF preselector ON and OFF.

• The [DIGI-SEL] indicator lights green when the prese-

lector is in use.

*9 MANUAL NOTCH FILTER CONTROL [NOTCH]

(for SUB band; outer control; p. 5-19)

(0 MANUAL NOTCH FILTER CONTROL [NOTCH]

(for MAIN band; outer control; p. 5-19)

Varies the “valley” frequency of the manual notch fil-

ter to reject an interfering signal while the manual

notch function is ON.

• Notch filter center frequency:

SSB : –1060 Hz to 4040 Hz

CW : CW pitch freq. + 2540 Hz to CW pitch freq.

–2540 Hz

AM : –5100 Hz to 5100 Hz

(1 CW PITCH CONTROL [CW PITCH] (p. 4-5)

Shifts the received CW audio pitch and the CW side

tone pitch without changing the operating frequency.

(2 RIT SWITCH [RIT] (p. 5-10)

➥ Turns the RIT function ON and OFF when

pushed.

• Use [RIT/∂TX] control to vary the RIT frequency.

➥ Adds the RIT shift frequency to the operating fre-

quency when pushed for 1 sec.

✔

What is the RIT function?

Receiver incremental tuning (RIT) shifts the receive fre-

quency without shifting the transmit frequency.

This is useful for fine tuning stations calling you on off-fre-

quency or when you prefer to listen to slightly different-

sounding voice characteristics, etc.

∂∂

TX SWITCH [

∂∂

TX] (p. 6-4)

➥ Turns the ∂TX function ON and OFF when

pushed.

• Use [RIT/∂TX] control to vary the ∂TX frequency.

➥ Adds the ∂TX shift frequency to the operating

frequency when pushed for 1 sec.

✔

What is the

∂∂

TX function?

∂TX shifts the transmit frequency without shifting the receive

frequency. This is useful for simple split frequency operation

in CW, etc.

(4 CLEAR SWITCH [CLEAR] (pgs. 5-10, 6-4)

Clears the RIT/∂TX shift frequency when pushed

for 1 sec. or when pushed momentarily, depending

on the quick RIT/∂TX clear function setting

(p. 12-

17)

(5 QUICK TUNING SWITCH [TS] (for MAIN band)

(6 QUICK TUNING SWITCH [TS] (for SUB band)

➥ Turns the quick tuning step ON and OFF. (p. 3-

• While the quick tuning indicator, “Z,” is displayed

above the frequency indication, the frequency can be

changed in programmed kHz steps.

• 0.1, 1, 5, 9, 10, 12.5, 20 and 25 kHz steps are avail-

able for each operating mode independently.

➥ When the quick tuning step is OFF, push for

1 sec. to turn the 1 Hz tuning step ON and OFF.

(p. 3-7)

➥ When the quick tuning step is ON, push for

1 sec. to enter quick tuning step set mode. (p. 3-

(7 SPEECH SWITCH [SPEECH]

(for MAIN band; p. 13-3)

(8 SPEECH SWITCH [SPEECH]

(for SUB band; p. 13-3)

➥ Push to announce the S-meter indication and the

selected readout frequency.

➥ The selected operating mode is additionally an-

nounced when pushed for 1 sec.

High

frequency

Low

frequency

Higher

frequency

Lower

frequency

Higher

frequency

Lower

frequency

PANEL DESCRIPTION

1-12

■ Rear panel

q ANTENNA CONNECTOR 1 [ANT 1] (p. 2-4)

w ANTENNA CONNECTOR 2 [ANT 2] (p. 2-4)

e ANTENNA CONNECTOR 3 [ANT 3] (p. 2-4)

r ANTENNA CONNECTOR 4 [ANT 4] (p. 2-4)

Accept a 50 Ω antenna with a PL-259 plug connec-

tor.

t GROUND TERMINAL [GND] (p. 2-3)

Connect this terminal to a ground to prevent electri-

cal shocks, TVI, BCI and other problems.

y CIRCUIT BREAKER

Cuts off the AC input when over-current occurs.

u RECEIVE ANTENNA B OUT [RX ANT B– OUT]

i RECEIVE ANTENNA B IN [RX ANT B– IN]

Located between the transmit/receive switching cir-

cuit and receiver’s RF stage in SUB band (MAIN

band during split operation).

Connects an external unit, such as preamplifier or

RF filter, using BNC connectors, if desired.

When no external unit is connected, [RX ANT B–

OUT] and [RX ANT B– IN] must be shorted with the

supplied coaxial cable. (p. 2-2)

o TRANSVERTER CONNECTOR [X-VERTER]

(p. 2-5)

External transverter input/output connector.

Activated by voltage applied to [ACC 2] pin 6, or

when the transverter function is in use. (pgs. 2-10,

4-6)

!0 RECEIVE ANTENNA A OUT [RX ANT A– OUT]

!1 RECEIVE ANTENNA A IN [RX ANT A– IN]

Located between the transmit/receive switching cir-

cuit and receiver’s RF stage in MAIN band (SUB

band during split operation).

Connects an external unit, such as preamplifier or

RF filter, using BNC connectors, if desired.

When no external unit is connected, [RX ANT A–

OUT] and [RX ANT A– IN] must be shorted with the

supplied coaxial cable. (p. 2-2)

!2 MAIN POWER SWITCH [I/O] (p. 3-2)

Turns the internal power supply ON and OFF.

!3 AC POWER SOCKET [AC] (p. 2-4)

Connects the supplied AC power cable to an AC

line-voltage receptacle.

EXTERNAL SPEAKER JACK MAIN [EXT-SP MAIN]

(p. 2-5)

!5 EXTERNAL SPEAKER JACK SUB [EXT-SP SUB]

(p. 2-5)

Connects an external speaker (4–8 Ω), if desired.

Receiver

Transmitter

[RX ANT A/B]

OUT

Transmit/Receive

switching circuit

PANEL DESCRIPTION

MAINSUB

ACC 1

ACC 2

ACC 1

ACC 2

ALC

ADJ

ALC

RELAY

KEY

EXT

KEYPAD

METER

DC OUT

15V

MAX1A

REF I/O

10MHz

10dBm

INOUT

REMOTE

232C

KEY BOARD

EXT

DISPLAY

S/P DIF

EXT

ANT 1

ANT 2

ANT 3

ANT 4

GND

VERTER

RX ANT

OUT

q w e r u i o !0 !1

!4!5!7!9 !6!8@0@1@2@3@4@5@6@7@8@9#0#1#2#3 #4

t y

1-13

!6 ACCESSORY SOCKET 1 A [ACC 1–A]

!7 ACCESSORY SOCKET 2 A [ACC 2–A]

!8 ACCESSORY SOCKET 1 B [ACC 1–B]

!9 ACCESSORY SOCKET 2 B [ACC 2–B]

Enable connection of external equipment such as a

linear amplifier, an automatic antenna

selector/tuner, a TNC for data communications, etc.

• See p. 2-10 for socket information.

@0 ALC LEVEL ADJUSTMENT POT [ALC ADJ]

Adjusts the ALC levels.

No adjustment is required when the ALC output

level of the connected non-Icom linear amplifier is

0 to –4 V DC.

@1 ALC INPUT JACK [ALC] (p. 2-7)

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

ear amplifier.

@2 T/R CONTROL JACK [RELAY] (p. 2-7)

Goes to ground when transmitting to control an ex-

ternal unit, such as a non-Icom linear amplifier.

@3 STRAIGHT KEY JACK [KEY] (p. 2-4)

Accepts a straight key or external electronic keyer

with

⁄4 inch standard plug.

• [ELEC-KEY] on the front panel can be used for a

straight key or external electronic keyer. Deactivate the

internal electronic keyer in keyer set mode. (p. 4-12)

@4 EXTERNAL KEYPAD JACK [EXT KEYPAD]

(p. 2-6)

Connects an external keypad for direct voice mem-

ory or electronic keyer control.

Transceiver mute control line (both transmit and re-

ceive) is also supported.

@5 METER JACK [METER] (p. 2-6)

Outputs the receiving signal strength level signal,

transmit output power, VSWR, ALC, speech com-

pression, VD or ID level for external meter indication.

@6 DC OUTPUT JACK [DC OUT] (p. 2-6)

Outputs a regulated 14 V DC (approx.) for external

equipment. Connected in parallel with 13.8 V out-

puts of [ACC 1] and [ACC 2]. (max. 1 A in total)

@7 REFERENCE SIGNAL INPUT/OUTPUT

TERMINAL [REF I/O]

Inputs/outputs a 10 MHz reference signal.

@8 S/P DIF INPUT TERMINAL [S/P DIF– IN] (p. 2-6)

@9 S/P DIF OUTPUT TERMINAL [S/P DIF– OUT]

(p. 2-6)

Connects external equipment that supports S/P DIF

input/output.

#0 CI-V REMOTE CONTROL JACK [REMOTE]

(p. 2-5)

➥ Connects a PC via the optional CT-17

CI-V LEVEL

CONVERTER for external control of the transceiver.

➥ Used for transceive operation with another Icom

CI-V transceiver or receiver.

#1 RS-232C TERMINAL [RS-232C] (p. 2-5)

Connects an RS-232C cable, D-sub 9-pin to con-

nect the IC-7800 to a PC.

Can be used for remotely control the IC-7800 with-

out the optional CT-17, or for RTTY/PSK31 de-

coded signal output. The [RS-232C] interface is

wired as a modem (DCE).

#2 KEYBOARD CONNECTOR [KEYBOARD]

(p. 2-6)

Connects a PC keyboard for RTTY and PSK31 op-

erations.

• USB (Universal Serial Bus) keyboard is supported.

#3 EXTERNAL DISPLAY TERMINAL

[EXT-DISPLAY] (p. 2-6)

Connects to an external display monitor.

• At least 800×600 pixel display is necessary.

#4 ETHERNET CONNECTOR (p. 16-6)

Connects to a PC through a LAN (Local Area Net-

work).

(+)

(_)

NOTE: T/R control voltage and current must be

lower than 16 V DC/0.5 A (or 250 V AC,

200 mA with MOS-FET switching).

PANEL DESCRIPTION

■ LCD display

q BAND WIDTH INDICATOR (p. 5-12)

Shows the passband width of the IF filter.

w MODE INDICATOR

Shows the selected mode.

e SHIFT FREQUENCY INDICATOR (p. 5-12)

Shows the shift frequency of the IF filter.

r QUICK TUNING INDICATOR (p. 3-6)

Appears when the quick tuning step function is in use.

t PASSBAND WIDTH INDICATOR (p. 5-12)

Graphically displays the passband width for twin

PBT operation and center frequency for IF shift op-

eration.

y BANDPASS FILTER INDICATOR

Appears when the narrow filter (500 Hz or less) is

selected during CW, RTTY or PSK31 operation.

u RTTY TUNING INDICATOR

Shows the tuning level in RTTY mode.

i CLOCK READOUT

Shows the current time.

o S/RF METER (p. 3-10)

Shows the signal strength while receiving. Shows

the relative output power, SWR, ALC or compres-

sion levels while transmitting.

!0 TX INDICATOR

Indicates the frequency readout for transmit.

!1 VFO/MEMORY CHANNEL INDICATOR (p. 3-3)

Indicates the VFO mode or selected memory chan-

nel number.

!2 IF FILTER INDICATOR

Shows the selected IF filter number.

!3 FREQUENCY READOUTS

Shows the operating frequency.

• Gray characters are used for non-active readout.

SELECT MEMORY CHANNEL INDICATOR (p. 9-7)

Indicates the displayed memory channel is set as a

select memory channel.

!5 MEMORY CHANNEL READOUTS

➥ Shows the selected memory channel contents in

VFO mode.

➥ Shows the VFO contents in memory mode.

!6 MULTI-FUNCTION SWITCH GUIDE

Indicates the function of the multi-function switches.

!7 LCD FUNCTION SWITCH GUIDE

Indicates the function of the LCD function switches

([F-1] – [F-7]).

!8 MULTI-FUNCTION SCREEN

Shows the screens for the multi-function digital

meter, spectrum scope, voice recorder, memory

channel, scan, memory keyer, RTTY decoder, PSK

decoder, IF filter selection or set modes, etc.

1-14

PANEL DESCRIPTION

q w e t uy ir q w e t uyr

!4 !5

1-15

■ Screen menu arrangement

The following screens can be selected from the start

up screen. Choose the desired screen using the fol-

lowing chart.

Pushing [EXIT/SET] several times returns to the start

up screen. See p. 12-3 for set mode arrangement.

PANEL DESCRIPTION

• Spectrum scope screen (p. 5-2)

• Voice recorder screen (p. 7-3)

• RTTY decoder screen (p. 4-13)

• Memory keyer screen (CW mode; p. 4-8)

• Memory channel screen (p. 8-3)

• PSK31 decoder screen (p. 4-21)

• Scan screen (VFO mode; p. 9-4)

• Scan screen (Memory mode; p. 9-6)

• Set mode menu screen (p. 12-2)

2-1

INSTALLATION AND CONNECTIONS Section 2

■ Unpacking ……………………………………………………………… 2-2

■ Antenna jumper cable connection …………………………………… 2-2

■ Selecting a location …………………………………………………… 2-2

■ Rack mounting handle attachment …………………………………… 2-2

■ Grounding ……………………………………………………………… 2-3

■ Antenna connection …………………………………………………… 2-3

■ CF (Compact Flash) memory card …………………………………… 2-3

■ Required connections ………………………………………………… 2-4

D Front panel …………………………………………………………… 2-4

D Rear panel …………………………………………………………… 2-4

■ Advanced connections ………………………………………………… 2-5

D Front panel …………………………………………………………… 2-5

D Rear panel—1 ……………………………………………………… 2-5

D Rear panel—2 ……………………………………………………… 2-6

■ Linear amplifier connections …………………………………………… 2-7

D Connecting the IC-PW1 …………………………………………… 2-7

D Connecting a non-Icom linear amplifier …………………………… 2-7

■ Transverter jack information …………………………………………… 2-8

■ FSK and AFSK (SSTV) connections ………………………………… 2-8

■ Microphone connector information …………………………………… 2-9

■ Microphones (options) ………………………………………………… 2-9

D SM-20 ………………………………………………………………… 2-9

D HM-36 ………………………………………………………………… 2-9

■ Accessory connector information …………………………………… 2-10

CAUTION!: The transceiver weighs approx. 25 kg (55 lb).

Always have two people available to carry, lift or

turn over the transceiver.

2-2

■ 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-7800, see ‘Supplied acces-

sories’ on p. iii of this manual.

■ Antenna jumper cable connection

Connect the supplied coaxial cable (terminated with

BNC connectors) between [RX ANT A— IN] and [RX

ANT A— OUT], and, [RX ANT B— IN] and [RX ANT

B— OUT], respectively.

When connecting an external filter unit, pre-amplifier,

etc., connect the unit between [RX ANT A/B— IN] and

[RX ANT A/B— OUT] connectors.

■ 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 electromagnetic 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 preference.

■ Rack mounting handle attachment

Remove the four screws from both sides of the front

panel and the two screws from both sides of the side

panel, then attach the rack mounting handles to the

sides of the transceiver using the supplied screws.

INSTALLATION AND CONNECTIONS

2-3

■ 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.

R WARNING: 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 receiver sensi-

tivity. Select antenna(s), such as a well-matched 50 Ω

antenna, and feedline. We recommend 1.5:1 or better

of Voltage Standing Wave Ratio (VSWR) for your de-

sired band. Of course, the transmission line should be

a coaxial cable.

When using 1 antenna, use the [ANT1] connector.

CAUTION: Protect your transceiver from lightning

by using a lightning arrestor.

■ CF (Compact Flash) memory card

Insert the supplied CF (Compact Flash) memory

card into the CF memory card slot.

• To remove the CF memory card, push-in the button, lo-

cated at left hand side of the slot.

Make sure to install the memory card correctly.

NEVER insert or remove the CF memory card

when the read/write indicator lights or blinks.

Read/write indicator

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-

tors. In this case, an antenna tuner is useful to match

the transceiver and antenna. Low SWR allows full

power for transmitting. The IC-7800 has an SWR

meter to monitor the antenna SWR continuously.

INSTALLATION AND CONNECTIONS

PL-259 CONNECTOR INSTALLATION EXAMPLE

30 mm ≈

⁄

8 in 10 mm ≈

⁄

8 in 1–2 mm ≈

⁄

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 sol-

der the center con-

ductor.

2-4

■ Required connections

Front panel

Rear panel

MAINSUB

ACC 1

ACC 2

ACC 1

ACC 2

ALC

ADJ

ALC

RELAY

KEY

EXT

KEYPAD

METER

DC OUT

15V

MAX1A

REF I/O

10MHz

10dBm

INOUT

REMOTE

232C

KEY BOARD

EXT

DISPLAY

S/P DIF

EXT

ANT 1

ANT 2

ANT 3

ANT 4

GND

VERTER

RX ANT

OUT

Straight key

A jumper cable is

connected.

Antenna 1, 2, 3, 4 (p. 2-3)

Ground

(p. 2-3)

Use the heaviest gauge

wire or strap available and

make the connection as

short as possible.

Grounding prevents elec-

trical shocks, TVI and oth-

er problems.

AC outlet

R WARNING:

Use the supplied

AC power cable

only.

NOTE: Attach the sup-

plied antenna connec-

tor cap when no anten-

na or external equip-

ment is connected.

[Example]: ANT1 for 1.8–18 MHz bands, ANT 2 for 21–28 bands

ANT3 for 50 MHz band, ANT 4 for receive antenna.

Microphones (p. 2-9)

CW key

A straight or bug key can be used when the

internal electronic keyer is turned OFF in

keyer set mode. (p. 4-12)

Optional

SM-20

Optional

HM-36

INSTALLATION AND CONNECTIONS

2-5

■ Advanced connections

Front panel

Rear panel— 1

MAINSUB

ACC 1

ACC 2

ACC 1

ACC 2

ALC

ADJ

ALC

RELAY

KEY

EXT

KEYPAD

METER

DC OUT

15V

MAX1A

REF I/O

10MHz

10dBm

INOUT

REMOTE

232C

KEY BOARD

EXT

DISPLAY

S/P DIF

EXT

ANT 1

ANT 2

ANT 3

ANT 4

GND

VERTER

RX ANT

OUT

RX ANT A/B IN/OUT

Connects an external preamp

or lowpass filter.

External speaker (p. 15-4)

ACC sockets

(pgs.2-8, 2-10)

Antenna 1, 2, 3, 4 (p. 2-7)

Connects a linear amplifier,

antenna selector, etc.

[X-VERTER]

Connects a transverter

for V/UHF band use.

[RELAY], [ALC] (p.2-7)

Used for connecting a

non-Icom linear amplifier.

SP-20

(option)

[REMOTE], [RS-232C] (p. 14-2)

Used for computer control and transceive

operation.

The optional CT-17 is required when con-

necting a PC to [REMOTE].

MIC

Headphones

CF (Compact Flash) memory card

The AFSK modulation signal can also

be input to [MIC].

INSTALLATION AND CONNECTIONS

2-6

Rear panel— 2

MAINSUB

ACC 1

ACC 2

ACC 1

ACC 2

ALC

ADJ

ALC

RELAY

KEY

EXT

KEYPAD

METER

DC OUT

15V

MAX1A

REF I/O

10MHz

10dBm

INOUT

REMOTE

232C

KEY BOARD

EXT-DISPLAY

S/ P DID

EXT-SP

ANT 1

ANT 2

ANT 3

ANT 4

GND

X-VERTER

RX ANT

OUT

External Display

Connects a PC-style

monitor display (at least

800×600 resolution).

Video output signal can

be turned ON and OFF

in set mode (p. 12-12)

[DC OUT]

Outputs regulated 14 V

(approx.) DC for external

equipment power supply.

(max. 1 A capacity)

External keypad

Connects an external keypad for direct voice memory

and memory keyer controls.

Keyboard

Connects an USB type

PC keyboard directly for

RTTY/PSK31 operation,

as well as other text edit

operations.

Connects a PC for

audio signal data

input/output.

48 kHz, 16-bit

Stereo output

(L=Main band;

R=Sub band)

[S/P DEAF IN/OUT]

Connects a PC

via a LAN for the

CPU firmware

update.

Ethernet connector (p. 16-6)

1.5 kΩ

±5%

1.5 kΩ

±5%

2.2 kΩ

±5%

4.7 kΩ

±5%

(T1/M1)

(T2/M2)

(T3/M3)

(T4/M4)

EXTERNAL KEYPAD

3.5 (d) mm;

1⁄8≤

plug

Mute switch: Mutes both transmission and

reception when switched ON during trans-

ceive operation, etc.

[METER]

Connects an external meter, etc.

3.5 (d) mm;

1⁄8≤

plug

MAIN band meter

SUB band meter

INSTALLATION AND CONNECTIONS

2-7

■ Linear amplifier connections

Connecting the IC-PW1/EURO

Connecting a non-Icom linear amplifier

R WARNING:

Set the transceiver output power and linear ampli-

fier 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 accept positive

voltage. Non-matched ALC and RF power settings

could cause a fire or ruin the linear amplifier.

The maximum control level of [RELAY] jack is

16 V/0.5 A DC with initial setting, and 250 V/200 mA

with “MOS-FET” setting (see p. 12-9 for details).

Use an external relay unit when your non-Icom lin-

ear amplifier requires control voltage and/or current

greater than specified.

RF OUTPUT RF INPUT

SEND

ALC

50 Ω

coaxial cable

Transceiver

ANT1

ALC

RELAY

To an

antenna

Non-Icom linear amplifier

To an

antenna

ACC-1

ANT

ANT2

ANT1

ACC 2

INPUT1

INPUT2

REMOTE

EXCITER

1&2

GND

IC-PW1/EURO

AC outlet

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

European version : 230 V)

Ground

Transceiver

REMOTE

Remote control cable (supplied with the IC-PW1/EURO)

ACC cable (supplied with the IC-PW1/EURO)

Be sure to connect the cable

to the 7-pin ACC 2 jack.

Coaxial cable

(supplied with the

IC-PW1/EURO)

Coaxial cable*

*Optional

Connect

[INPUT2]

if necessary

INSTALLATION AND CONNECTIONS

2-8

■ Transverter jack information

When 2 to 13.8 V is applied to pin 6 of [ACC 2], the [X-

VERTER] connector is activated for transverter opera-

tion and the antenna connectors do not receive or

transmit any signals. (p. 4-6)

While receiving, [X-VERTER] connector can be acti-

vated as an input terminal from an external transverter.

While transmitting, the [X-VERTER] connector outputs

signals of the displayed frequency at –20 dBm (22 mV)

as signals for the external transverter.

■ FSK and AFSK (SSTV) connections

To connect a TNC or scan converter, etc., refer to the

diagram below.

Connect to serial port, parallel

port, speaker jack, microphone

jack and line IN/OUT jack, etc.

See the instruction manual of

the application for details.

D AFSK operation

• When connecting to [ACC 1]

• When connecting to [MIC]

• When using a PC application

• When using a TNC

RS-232C

TNC or scan converter

PTT

Audio output

AF input

GND

AFSK output

AF input

GND

PTT*

SQL input

†

*When using the VOX function, no need to connect. Refer to the instruction

manual of the external equipment (TNC, etc.).

†

When connecting the squelch line, consult the necessary manual (TNC, etc.).

†

Rear panel view

RS-232C

TNC or scan converter

Connect to serial port, parallel

port, speaker jack, microphone

jack and line IN/OUT jack, etc.

See the instruction manual of the

application for details.

D FSK operation— when connecting to [ACC 1]

• When using a PC application

• When using a TNC

Rear panel view

RTTY

GND

SEND

RTTY

GND

SEND

RTTY OUTPUT

GND

AUDIO INPUT

PTT

RTTY OUTPUT

GND

AUDIO INPUT

PTT

Transverter connector

INSTALLATION AND CONNECTIONS

2-9

■ Microphone connector information

(Front panel view)

CAUTION: DO NOT short pin 2 to ground as this

can damage the internal 8 V regulator.

NOTE: DC voltage is applied to pin 1 for micro-

phone operation. Take care when using a non-Icom

microphone.

■ Microphones (options)

q UP/DOWN SWITCHES [UP]/[DN]

Change the selected readout frequency or memory

channel.

• Continuous pushing changes the frequency or memory

channel number continuously.

• While pushing [XFC], the transmit readout frequency can

be controlled while in split frequency operation.

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

in the keyer set mode. (p. 4-12)

w PTT SWITCH

Push and hold to transmit; release to receive.

e PTT LOCK SWITCH (available for SM-20 only)

Push to toggle between transmit and receive.

D SM-20

D HM-36

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])

INSTALLATION AND CONNECTIONS

[MIC]

FUNCTION DESCRIPTION

Pin No.

w +8 V DC output Max. 10 mA

Frequency up Ground

Frequency down Ground through 470 Ω

Squelch open “Low” level

Squelch closed “High” level

2-10

■ Accessory connector information

INSTALLATION AND CONNECTIONS

ACC 2

PIN No.

NAME DESCRIPTION SPECIFICATIONS

ACC 1

PIN No.

NAME DESCRIPTION SPECIFICATIONS

NOTE: If the CW side tone level limit or beep level

limit is in use, the CW side tone or beep tone de-

creases from the fixed level when the [AF] control is

rotated above a specified leve. (p. 12-5)

“High” level : More than 2.4 V

1 RTTY Controls RTTY keying “Low” level : Less than 0.6 V

Output current : Less than 2 mA

2 GND Connects to ground. Connected in parallel with ACC 2 pin 2.

Input/output pin.

Ground level : –0.5 V to 0.8 V

3 SEND Goes to ground when transmitting.

Output current : Less than 20 mA

When grounded, transmits.

Input current (Tx) : Less than 200 mA

Connected in parallel with ACC 2 pin 3.

4 MOD

Modulator input. Input impedance : 10 kΩ

Connects to a modulator. Input level : Approx. 100 mV rms

AF detector output.

Output impedance : 4.7 kΩ

5 AF Fixed, regardless of [AF] position

Output level : 100–300 mV rms

in default settings. (see notes below)

6 SQLS

Squelch output. SQL open : Less than 0.3 V/5 mA

Goes to ground when squelch opens.

SQL closed : More than 6.0 V/100 µA

7 13.8 V 13.8 V output when power is ON.

Output current : Max. 1 A

Connected in parallel with ACC 2 pin 7.

Control voltage : –4 V to 0 V

8 ALC ALC voltage input. Input impedance : More than 10 kΩ

Connected in parallel with ACC 2 pin 5.

1 8 V Regulated 8 V output.

Output voltage : 8 V ±0.3 V

Output current : Less than 10 mA

2 GND Same as ACC 1 pin 2.

3 SEND Same as ACC 1 pin 3.

4 BAND

Band voltage output.

Output voltage : 0 to 8.0 V

(Varies with amateur band)

5 ALC Same as ACC 1 pin 8.

6TRV

Activates [X-VERTER] input/output Input impedance : More than 10 kΩ

when “HIGH” voltage is applied. Input voltage : 2 to 13.8 V

13.8 V

Same as ACC 1 pin 7.

3-1

BASIC OPERATIONS Section 3

■ When first applying power (CPU resetting) ………………………… 3-2

■ Initial settings …………………………………………………………… 3-2

■ Main/Sub band selection ……………………………………………… 3-3

■ Selecting VFO/memory mode ………………………………………… 3-3

■ Selecting an operating band …………………………………………… 3-4

D Using the band stacking registers ………………………………… 3-4

■ Frequency setting ……………………………………………………… 3-5

D Tuning with the main dial …………………………………………… 3-5

D Direct frequency entry with the keypad …………………………… 3-5

D Quick tuning step …………………………………………………… 3-6

D Selecting “kHz” step ………………………………………………… 3-6

⁄4 tuning step function ……………………………………………… 3-6

D Selecting 1 Hz step ………………………………………………… 3-7

D Auto tuning step function …………………………………………… 3-7

D Band edge warning beep …………………………………………… 3-7

■ Operating mode selection ……………………………………………… 3-8

■ Volume setting ………………………………………………………… 3-9

■ RF gain adjustment …………………………………………………… 3-9

■ Squelch level adjustment ……………………………………………… 3-9

■ Meter indication selection …………………………………………… 3-10

D Multi-function digital meter ………………………………………… 3-10

D Meter type selection ……………………………………………… 3-11

■ Basic transmit operation ……………………………………………… 3-12

D Transmitting ………………………………………………………… 3-12

D Microphone gain adjustment ……………………………………… 3-12

D Drive gain adjustment ……………………………………………… 3-13

3-2

■ When first applying power (CPU resetting)

Before first applying power, make sure all connections

required for your system are complete by referring to

Section 2. Then, reset the transceiver using the follow-

ing procedure.

Resetting CLEARS all programmed contents in

memory channels and returns programmed values

in set mode to default values.

q Turn the main power ON with [I/O] on the rear

panel.

• The transceiver power is still OFF and the [POWER] in-

dicator lights orange.

w While pushing and holding [F-INP•

ENT] and [MW],

push [POWER] to turn power ON.

• The CPU is reset.

• The CPU start-up takes approx. 5 sec.

• The transceiver displays its initial VFO frequencies

when resetting is complete.

e Change the set mode settings after resetting, if de-

sired.

In cooler temperatures, the LCD may appear dark

and unstable after turning power ON. This is normal

and does not indicate any equipment malfunction.

■ Initial settings

After resetting the transceiver, set controls as shown

in the figure below.

[RF PWR]

: Max. clockwise

[MIC]

: 10–12 o’clock

[SQL]

: Max. counter-

clockwise

[AGC]: 12 o’clock

[DEGI-SEL]

: 12 o’clock

[NOTCH]

: 12 o’clock

[NB]

: Max. counter clockwise

[AF]

: Max. counter-

clockwise

[MONI GAIN], [COMP], [DRIVE],

[VOX GAIN], [ANTI VOX]

: 12 o’clock

[RF]

: Max. clockwise

[DELAY]

: Max. clockwise

[KEY SPEED]

: 10–12 o’clock

[CW PITCH]

: 12 o’clock

[NR]

: Max. counter clockwise

[F-INP•ENT][MW]

[I/O]

[POWER]

BASIC OPERATIONS

■ Main/Sub band selection

The IC-7800 has 2 identical receivers, main and sub.

The main band is displayed on the left hand side, and

the sub band is displayed on the right hand side of the

LCD. Some functions can only be applied to the se-

lected band and transmission occurs on the main band

(except during split frequency operation).

➥ Push [MAIN] to select the main band.

• The key backlight for [MAIN] lights.

• Main band’s frequency readout highlighted.

➥ Push [SUB] to select the sub band.

• The key backlight for [SUB] lights.

• Sub band’s frequency readout highlighted.

■ Selecting VFO/memory mode

VFO is an abbreviation of Variable Frequency Oscilla-

tor, and is commonly referred to as a main tuning func-

tion.

The main dial is often called the “VFO knob.”

➥ Push [V/M] to switch between VFO and memory

modes.

• “VFO” appears when in VFO mode, or the selected

memory channel number appears when in memory

mode.

• Pushing [V/M] for 1 sec. transfers the contents of the se-

lected memory channel to VFO. (p. 8-5)

“VFO” indicator

Memory channel

number

[V/M]

[MAIN] [SUB]

3-3

BASIC OPERATIONS

3-4

■ Selecting an operating band

The triple band stacking register provides 3 memories

for each band key, storing frequency and mode infor-

mation.

If a band key is pushed once, the frequency and oper-

ating mode last used are called up. When the key is

pushed again, another stored frequency and operating

mode are called up.

This function is convenient when you operate 3 modes

on one band. For example, one register is used for a

CW frequency, another for an SSB frequency and the

other one for an RTTY frequency.

See the table below for a list of the bands available

and the default settings for each band.

Using the band stacking registers

q Push [14•5], then select a frequency and an oper-

ating mode.

• Frequency and operating mode are memorized in the

first band stacking register.

w Push [14•5] again, then select another frequency

and operating mode.

• This frequency and operating mode are memorized in

the second band stacking register.

e Push [14•5] again, then select another frequency

and operating mode.

• This frequency and operating mode are memorized in

the third band stacking register.

• When a fourth frequency and operating mode are se-

lected on a band, the first register set in step q, is over

written.

[Example]: 14 MHz band

Band keys

BASIC OPERATIONS

BAND REGISTER 1 REGISTER 2 REGISTER 3

1.8 MHz 1.900000 MHz CW 1.910000 MHz CW 1.915000 MHz CW

3.5 MHz 3.550000 MHz LSB 3.560000 MHz LSB 3.580000 MHz LSB

7 MHz 7.050000 MHz LSB 7.060000 MHz LSB 7.020000 MHz CW

10 MHz 10.120000 MHz CW 10.130000 MHz CW 10.140000 MHz CW

14 MHz 14.100000 MHz USB 14.200000 MHz USB 14.050000 MHz CW

18 MHz 18.100000 MHz USB 18.130000 MHz USB 18.150000 MHz USB

21 MHz 21.200000 MHz USB 21.300000 MHz USB 21.050000 MHz CW

24 MHz 24.950000 MHz USB 24.980000 MHz USB 24.900000 MHz CW

28 MHz 28.500000 MHz USB 29.500000 MHz USB 28.100000 MHz CW

50 MHz 50.100000 MHz USB 50.200000 MHz USB 51.000000 MHz FM

General 15.000000 MHz USB 15.100000 MHz USB 15.200000 MHz USB

3-5

■ Frequency setting

The transceiver has several tuning methods for conve-

nient frequency tuning.

Tuning with the main dial

q Push the desired band key on the keypad 1–3

times.

• 3 different frequencies can be selected on each band

with the band key.

• Push [MAIN] or [SUB] to select the band.

w Rotate the main dial to set the desired frequency in

the main band, rotate the sub dial to set the desired

frequency in the sub band.

If the dial lock function is activated, the lock indicator

lights, and the main dial does not function. In this

case, push [LOCK] to deactivate the lock function.

(see p. 5-18 for details)

✔

CONVENIENT!

The sub dial is always available for tuning the sub

band. The sub dial allows quick tuning in the sub band

without switching from main to sub.

Direct frequency entry with the keypad

The transceiver has a keypad for direct frequency

entry as described below.

q Push [MAIN] or [SUB] to select the band.

w Push [F-INP•

ENT].

• “ ” indicator appears and keypad backlight

lights.

e Input the desired frequency

• Push [GENE•.] to input “. (decimal point)” between the

MHz units and kHz units.

r Push [F-INP•

ENT

] to set the input frequency.

• To cancel the input, push [Y]/[Z] instead of [F-INP•ENT].

[EXAMPLE]

7.00000 MHz

21.24000 MHz

21.24000 MHz ⇒ 21.36000 MHz

Push

Keypad

Band keys

Main dial Sub dial

BASIC OPERATIONS

3-6

Quick tuning step

The operating frequency can be changed in kHz steps

(0.1, 1, 5, 9, 10, 12.5, 20 or 25 kHz selectable) for

quick tuning.

q Push [TS] to turn the quick tuning function ON.

•“Z” appears when the quick tuning function ON.

w Rotate the main dial to change the frequency in pro-

grammed kHz steps.

e Push [TS] again to turn OFF the indicator.

r Rotate the main dial for normal tuning if desired.

Selecting “kHz” step

q Push [TS] to turn the quick tuning function ON and

OFF.

•“Z” appears when the quick tuning function ON.

w Push [TS] for 1 sec. to enter tuning step setting dis-

play.

• Selected tuning steps for all modes appear.

e Select the desired operating mode.

Rotate the main dial to select the desired tuning step.

t Repeat steps e and r to select quick tuning steps

for other modes, if desired.

y Push [EXIT/SET] to exit the setting display.

NOTE: When entering quick tuning step set mode,

the quick tuning function must be activated first. The

main and sub bands have independent tuning step

settings.

⁄4 tuning step function

When operating in SSB data, CW, RTTY or PSK, the

⁄4 tuning function is available. Dial rotation is reduced

⁄4 of normal speed when the

⁄4 tuning function is

ON for finer tuning control.

➥ Push [1/4] to toggle the

⁄4 tuning function ON and

OFF.

• “ ” appears when the

⁄4 tuning function is ON.

⁄4

⁄4 tuning step OFF

⁄4 tuning step ON

Main dial [TS]Select mode [TS]

BASIC OPERATIONS

Quick tuning indicator Quick tuning indicator

3-7

Selecting 1 Hz step

The minimum tuning step of 1 Hz can be used for fine

tuning.

q Push [TS] to turn the quick tuning function OFF.

w Push [TS] for 1 sec. to turn the 1 Hz tuning step ON

and OFF.

NOTE: 1 Hz tuning step activates for both main and

sub bands simultaneously. Therefore, either [TS]

can be used for the 1 Hz tuning step selection.

Auto tuning step function

When rotating main or sub dial rapidly, the tuning

speed accelerated automatically as selected.

q Push [EXIT/SET] several times to close a multi-

function screen, if necessary.

w Push [F-7•SET] to select set mode menu screen.

• Pushing and holding [EXIT/SET] for 1 sec. also selects

set mode menu screen.

e Push [F-5•OTHERS] to enter miscellaneous (oth-

ers) set mode.

r Push [F-1•Y] or [F-2•Z] to select “MAIN DIAL Auto

TS” or “SUB DIAL Auto TS.”

• “MAIN DIAL Auto TS” for main dial, “SUB DIAL Auto TS”

for sub dial selection.

t Rotate main dial to select the desired condition from

high, low and OFF.

• High : Approx. 5 times faster

• Low : Approx. twice faster

• OFF : Auto tuning step is turned OFF.

y Push [EXIT/SET] to exit the set mode.

Band edge warning beep

When you tune outside of an amateur band’s frequency

range, a warning beep sounds.

This function can be turned OFF in set mode, if de-

sired.

q Push [EXIT/SET] several times to close a multi-

function screen, if necessary.

w Push [F-7•SET] to select set mode menu screen.

• Pushing and holding [EXIT/SET] for 1 sec. also selects

set mode menu screen.

e Push [F5•OTHERS] to enter miscellaneous (others)

set mode.

r Push [F-1•Y] or [F-2•Z] to select “Beep (Band

Edge).”

t Rotate main dial to turn the band edge warning

beep ON and OFF.

y Push [EXIT/SET] to exit the set mode.

[F-1•Y][F-2•Z]

[F5•OTHERS]

[EXIT/SET] [F-7•SET]

1Hz step indicator 1Hz step indicator

BASIC OPERATIONS

3-8

■ Operating mode selection

SSB (USB/LSB), SSB data (USB data/LSB data), CW,

CW reverse (CW-R), RTTY, RTTY reverse (RTTY-R),

PSK, PSK reverse (PSK-R), AM, AM data, FM and FM

data modes are available in the IC-7800. Select the

desired operation mode as follows.

To select a mode of operation, push the desired mode

switch momentarily. Push the switch again to toggle

between USB and LSB, CW and CW-R, RTTY/RTTY-

R and PSK/PSK-R, AM and FM, if desired. Push the

switch for 1 sec. to toggle between RTTY and RTTY-

R, PSK and PSK-R, if desired.

See the diagram below left for the order of selection.

Microphone signals are muted when data mode is

selected.

• Selecting SSB mode

➥ Push [SSB] to select USB or LSB.

• USB is selected first when above 10 MHz; or LSB is se-

lected first when below 10 MHz operation.

(USB is selected when 5 MHz band is selected for the

USA version.)

• After USB or LSB is selected, push [SSB] to toggle be-

tween USB and LSB.

• Selecting CW mode

➥ Push [CW] to select CW.

• After CW is selected, push [CW] to toggle between CW

and CW reverse mode.

• Selecting RTTY/PSK mode

➥ Push [RTTY/PSK] to select RTTY or PSK.

• After RTTY or PSK is selected, push [RTTY/PSK] to tog-

gle between RTTY and PSK.

• After RTTY or PSK is selected, push [RTTY/PSK] for

1 sec. to toggle between RTTY and RTTY reverse, or,

PSK and PSK reverse mode, respectively.

• Selecting AM/FM mode

➥ Push [AM/FM] to select AM or FM.

• After AM or FM is selected, push [AM/FM] to toggle be-

tween AM and FM.

• Selecting DATA mode

➥ After USB, LSB, AM or FM is selected, push [DATA]

to select USB data, LSB data, AM data or FM data

mode, respectively.

• After data mode is selected, push [DATA] to toggle be-

tween regular voice and data mode.

• After data mode is selected, push [DATA] for 1 sec. to

select data 1, 2 and 3 in sequence.

USB

Push mode switch

for 1 sec.

Push mode switch

momentarily.

LSB

CW-R

RTTY-R RTTY PSK PSK-R

USB

LSB

USB-D1

LSB-D1

AM-D1

FM-D1

USB-D2

LSB-D2

AM-D2

FM-D2

USB-D3

LSB-D3

AM-D3

FM-D3

[SSB] [CW] [RTTY/PSK] [AM/FM] [DATA]

BASIC OPERATIONS

3-9

■ Volume setting

➥ Rotate [AF] control clockwise to increase, counter-

clockwise to decrease the audio output level.

• Set a suitable audio level.

■ RF gain adjustment

➥ Rotate [RF] control clockwise to increase, counter-

clockwise to decrease the receiver sensitivity.

■ Squelch level adjustment

The squelch removes noise output from the speaker

(closed position) when no signal is received.

➥ When no signal is received, rotate [SQL] control

fully counterclockwise first, then rotate [SQL] clock-

wise to the point that the noise just disappears.

[SQL] for main [SQL] for sub

S-meter squelch

Noise squelch (Recommended level; FM mode only)

Squelch is

open

[RF] for main [RF] for sub

Sensitivity

increases

Sensitivity

decreases

[AF] for main [AF] for sub

Audio output

increases

Audio output

decreases

BASIC OPERATIONS

■ Meter indication selection

The S/RF meter indication, during transmit, can be se-

lected from the following items as you desire.

➥ Push [METER] several times to select the desired

item.

Indicates the RF output power in watts.

Indicates the VSWR on the transmission

line.

Indicates the ALC level. The ALC circuit

begins to activate when the RF output

power reaches a preset level.

Indicates the compression level when

the speech compressor is in use.

Indicates the drain current of the final

amplifier MOS-FETs.

Indicates the drain terminal voltage of

the final amplifier MOS-FETs.

Multi-function digital meter

The IC-7800 can display the multi-function digital

meter in the LCD display. This meter displays all trans-

mit parameters simultaneously.

q Push [METER] for 1 sec. to turn the multi-function

digital meter ON.

w Push [F-1•P-HOLD] to toggle the peak level hold

function ON.

• “P-HOLD” appears on the window title when the peak

level hold function is ON.

e Push [METER] for 1 sec., or push [EXIT/SET] to

turn the multi-function digital meter OFF.

“P-HOLD” indicator

ALC

52V

1.5

∞

100

150

200

250

SWR

COMP

60dB

Signal strength

level readout

D readout

Power level readout

VSWR readout

Compression level

readout

ALC level readout V

D readout

[METER]

3-10

BASIC OPERATIONS

3-11

Meter type selection

A total of 3 meter types are available in the IC-7800—

Standard, Edgewise and Bar meters.

Follow the instructions below for the meter type selec-

tion.

q Push [EXIT/SET] several times to return to normal

screen, if necessary.

w Push [F-7•SET], then push [F-3•DISPLAY] to select

display set mode.

e Push [F-1•Y] or [F-2•Z] to select “Meter type (Nor-

mal Screen)” item.

r Rotate main dial to select the desired meter type

from “Standard,” “Edgewise” and “Bar.”

t Push [EXIT/SET] to exit display set mode.

• Edgewise meter

• Bar meter

[F-1•Y] [EXIT/SET][F-7•SET][F-2•Z]

[F-3•DISPLAY]

BASIC OPERATIONS

3-12

■ Basic transmit operation

Transmitting

Before transmitting, monitor your selected operating

frequency to make sure transmitting won’t cause inter-

ference to other stations on the same frequency.

q Push [TRANSMIT] or [PTT] (microphone) to trans-

mit.

• The main band’s [TX] indicator lights red.

• When split operation is activated, the sub band’s [TX] in-

dicator lights.

w Push [TRANSMIT] again or release [PTT] (micro-

phone) to return to receive.

✔

Adjusting the transmit output power

➥ Rotate [RF PWR].

• Adjustable range : 5 W to 200 W

(AM mode: 5 W to 50 W)

Microphone gain adjustment

Before transmitting, monitor your selected operating

frequency to make sure transmitting won’t cause inter-

ference to other stations on the same frequency.

q Push [METER] to select the ALC meter.

w Push [PTT] (microphone) to transmit.

• Talk into the microphone at your normal voice level.

e While talking into the microphone, rotate [MIC] so

that the ALC meter reading doesn’t go outside the

ALC zone. (see at left)

r Release [PTT] (microphone) to return to receive.

ALC

52V

1.5

∞

100

150

200

250

SWR

COMP

60dB

ALC zone

[MIC] [METER]

Increases

max. 200 W

(50 W for AM)

Decreases

min. 5 W

[TRANSMIT]

[RF PWR]

[TX] indicator

Before transmitting, monitor your selected oper-

ating frequency to make sure transmitting won’t

cause interference to other stations on the same

frequency. It’s good amateur practice to listen

first, and then, even if nothing is heard, ask “is

the frequency in use” once or twice, before you

being operating on that frequency.

BASIC OPERATIONS

3-13

Drive gain adjustment

The drive gain is active for all modes except SSB with-

out speech compressor. The [DRIVE] control adjusts

the amplifying gain at the driver stage.

Before transmitting, monitor your selected operating

frequency to make sure transmitting won’t cause inter-

ference to other stations on the same frequency.

q Push [METER] to select the ALC meter.

w Push [PTT] (microphone; SSB with [COMP] ON, AM

or FM), key down (CW) or push [TRANSMIT] (RTTY

or PSK) to transmit.

e While talking into the microphone, keying down or

transmitting, rotate [DRIVE] so that the ALC meter

reading swinging within 30 to 50% of the ALC scale.

(see left)

• Talk into the microphone at your normal voice level.

r Release [PTT], stop keying or push [TRANSMIT]

again to return to receive.

[DRIVE][METER]

BASIC OPERATIONS

ALC

52V

1.5

∞

100

150

200

250

SWR

COMP

60dB

Drive gain range

4-1

RECEIVE AND TRANSMIT Section 4

■ Operating SSB ………………………………………………………… 4-2

D Convenient functions for receive ……………………………………4-2

D Convenient functions for transmit ……………………………………4-3

D About 5 MHz band operation (USA version only) …………………4-3

■ Operating CW …………………………………………………………… 4-4

D Convenient functions for receive ……………………………………4-4

D Convenient functions for transmit ……………………………………4-5

D About CW reverse mode ……………………………………………4-5

D About CW pitch control ………………………………………………4-5

D CW side tone function ………………………………………………4-5

D APF (Audio Peak Filter) operation …………………………………4-6

D About 137 kHz band operation (Europe, UK, Italy, Spain, France

versions only) …………………………………………………………4-6

■ Electronic keyer functions ……………………………………………… 4-7

D Memory keyer screen …………………………………………………4-8

D Editing a memory keyer ………………………………………………4-9

D Contest number set mode …………………………………………4-10

D Keyer set mode ………………………………………………………4-11

■ Operating RTTY (FSK) ……………………………………………… 4-13

D Convenient functions for receive …………………………………4-14

D About RTTY reverse mode …………………………………………4-14

D Twin peak filter ………………………………………………………4-14

D Functions for the RTTY decoder indication ………………………4-15

D Setting the decoder threshold level ………………………………4-15

D RTTY memory transmission ………………………………………4-16

D Automatic transmission/reception setting …………………………4-16

D Editing RTTY memory ………………………………………………4-17

D RTTY decode set mode ……………………………………………4-18

D Data saving …………………………………………………………4-20

■ Operating PSK ………………………………………………………… 4-21

D Convenient functions for receive …………………………………4-22

D About BPSK and QPSK mode ……………………………………4-22

D Functions for the PSK decoder indication ………………………4-23

D Setting the decoder threshold level ………………………………4-23

D PSK memory transmission …………………………………………4-24

D Automatic transmission/reception setting …………………………4-24

D Editing PSK memory ………………………………………………4-25

D PSK decode set mode ………………………………………………4-26

D Data saving …………………………………………………………4-28

■ Operating AM ………………………………………………………… 4-29

D Convenient functions for receive …………………………………4-29

D Convenient functions for transmit …………………………………4-30

■ Operating FM ………………………………………………………… 4-31

D Convenient functions for receive …………………………………4-31

D Convenient functions for transmit …………………………………4-31

■ Repeater operation …………………………………………………… 4-32

D Repeater tone frequency setting …………………………………4-32

■ Tone squelch operation ……………………………………………… 4-33

■ Data mode (AFSK) operation ………………………………………… 4-34

4-2

■ Operating SSB

q Push a band key to select the desired band.

w Push [SSB] to select LSB or USB.

• “USB” or “LSB” appears.

• Below 10 MHz LSB is automatically selected; above

10 MHz USB is automatically selected.

e Rotate the main dial to tune a desired signal.

• The S-meter indicates received signal strength when

signal is received.

r Rotate [AF] to set audio to a comfortable listening

level.

t Push [TRANSMIT] or [PTT] (microphone) to trans-

mit.

• [TX] indicator lights red.

y Speak into the microphone at your normal voice

level.

• Adjust the microphone gain with [MIC] at this step, if

necessary.

u Push [TRANSMIT] or release [PTT] (microphone) to

return to receive.

Convenient functions for receive

• Preamp (p. 5-9)

➥ Push [P.AMP] several times to set the preamp

OFF, preamp 1 ON or preamp 2 ON.

• “P.AMP1” or “P.AMP2” appears when the preamp 1 or

preamp 2 is ON, respectively. (Main and sub have

independent preamp controls.)

• Attenuator (p. 5-9)

➥ Push [ATT] several times to set the attenuator in

6 dB steps.

• Pushing [ATT] for 1 sec. to set the attenuator in 3 dB

steps.

• “ATT” and attenuation level appear when the attenu-

ator is ON.

• Noise blanker (p. 5-17)

➥ Push [NB] switch to turn the noise blanker ON

and OFF, and then rotate [NB] control to adjust

the threshold level.

• Noise blanker indicator (above [NB] switch) lights

when the noise blanker is ON.

• Push [NB] for 1 sec. to enter noise blanker set mode.

• Twin PBT (passband tuning) (p. 5-12)

➥ Rotate [TWIN PBT] controls (inner/outer).

• Push [PBT CLEAR] to clear the settings.

• Audio tone control (p. 12-4)

➥ Push [F-7•SET] then [F-1•LEVEL] to enter level

set mode. Select an item with [F-1•Y]/[F-2•Z]

then rotate the main dial to adjust the audio tone.

• Noise reduction (p. 5-18)

➥ Push [NR] switch to turn the noise reduction ON

and OFF.

• Rotate [NR] control to adjust the noise reduction

level.

• Noise reduction indicator (above [NR] switch) lights

when the noise reduction is ON.

• Auto notch filter (p. 5-19)

➥ Push [NOTCH] switch to turn the auto or manual

notch function ON and OFF.

• Rotate [NOTCH] control to set the “valley” frequency

for manual notch operation.

• Notch indicator (above [NOTCH] switch) lights when

either the auto or manual notch is ON.

• AGC (auto gain control) (p. 5-11)

➥ Push [AGC] switch several times to select

AGC FAST, AGC MID or AGC SLOW.

➥ Push [AGC VR] to turn the AGC time constant

manual setting ON and OFF.

• Rotate [AGC] control to adjust the time constant.

• VSC (voice squelch control) (p. 9-3)

➥ Push [VSC] to turn the VSC function ON and

OFF.

• The VSC indicator appears when the voice squelch

function is set to ON.

Appears

[MIC] [TX] indicator [RX] indicator

[AF] [SSB][TRANSMIT] Main dial

Band keys

RECEIVE AND TRANSMIT

Convenient functions for transmit

About 5 MHz band operation (USA version only)

Operation on the 5 MHz band is allowed on 5 discrete

frequencies and must adhere to the following:

• USB mode

• Maximum of 50 watts ERP (Effective Radiated Power)

• 2.8 kHz bandwidth

It’s your responsibility to set all controls so that trans-

mission in this band meets the stringent conditions

under which we may use these frequencies.

NOTE: We recommend that you store these fre-

quencies, mode and filter settings into memory

channels for easy recall.

*The FCC specifies center frequencies on the

5 MHz band. However, the IC-7800 displays carri-

er frequency. Therefore, tune the transceiver to

1.5 kHz below the specified FCC channel center

frequency.

• Speech compressor (p. 6-5)

➥ Push [COMP] to turn the speech compressor ON

and OFF.

• Pushing [COMP] for 1 sec. to select the compression

bandwidth from wide, middle and narrow.

• VOX (voice operated transmit) (p. 6-2)

➥ Push [VOX/BK-IN] to turn the VOX function ON

and OFF.

• “VOX” appears when the VOX function is ON.

• Transmit quality monitor (p. 6-4)

➥ Push [MONI] to turn the monitor function ON and

OFF.

• Rotate [MONI GAIN] to adjust the monitor gain.

• Monitor indicator (above [MONI] switch) lights when

the monitor function is ON.

• Audio tone control (p. 12-4)

➥ Push [F-7•SET] then [F-1•LEVEL] to enter level

set mode. Select an item with [F-1•Y]/[F-2•Z]

then rotate the main dial to adjust the audio tone.

4-3

RECEIVE AND TRANSMIT

IC-7800 Tuning FCC Channel

Frequency* Center Frequency*

5.33050 MHz 5.33200 MHz

5.34650 MHz 5.34800 MHz

5.36650 MHz 5.36800 MHz

5.37150 MHz 5.37300 MHz

5.40350 MHz 5.40500 MHz

To assist you in operating the 5 MHz band within the

rules specified by the FCC, transmission is illegal on

any 5 MHz band frequency other than the 5 fre-

quencies indicated in the table above.

4-4

■ Operating CW

q Push a band key to select the desired band.

w Push [CW] to select CW.

• After CW mode is selected, push [CW] to toggle be-

tween CW and CW-R modes.

• “CW” or “CW-R” appears.

e Rotate the main dial to tune a desired signal.

• Try to match the specified signal’s tone to the side tone

frequency.

• The S-meter indicates received signal strength when

signal is received.

r Rotate [AF] to set audio to a comfortable listening

level.

t Push [TRANSMIT] to transmit.

• [TX] indicator lights red.

y Use the electric keyer or paddle to key your CW sig-

nals.

• The power meter indicates transmitted CW output

power.

u Adjust CW speed with [KEY SPEED].

• Adjustable within 6–60 WPM.

i Push [TRANSMIT] to return to receive.

Convenient functions for receive

• Preamp (p. 5-9)

➥ Push [P.AMP] several times to set the preamp

OFF, preamp 1 ON or preamp 2 ON.

• “P.AMP1” or “P.AMP2” appears when the preamp 1 or

preamp 2 is ON. Main and sub have independent

preamp controls.

• Attenuator (p. 5-9)

➥ Push [ATT] several times to set the attenuator in

6 dB steps.

• Pushing [ATT] for 1 sec. to set the attenuator in 3 dB

steps.

• “ATT” and attenuation level appear when the attenu-

ator is ON.

• Noise blanker (p. 5-17)

➥ Push [NB] switch to turn the noise blanker ON

and OFF, and then rotate [NB] control to adjust

the threshold level.

• Noise blanker indicator (above [NB] switch) lights

when the noise blanker is ON.

• Push [NB] for 1 sec. to enter noise blanker set mode.

• Noise reduction (p. 5-18)

➥ Push [NR] switch to turn the noise reduction ON

and OFF.

• Rotate [NR] control to adjust the noise reduction

level.

• Noise reduction indicator (above [NR] switch) lights

when the noise reduction is ON.

• Twin PBT (passband tuning) (p. 5-12)

➥ Rotate [TWIN PBT] controls (inner/outer).

• Push [PBT CLEAR] to clear the settings.

• Manual notch filter (p. 5-19)

➥ Push [NOTCH] switch to turn the manual notch

function ON and OFF.

• Rotate [NOTCH] control to set the attenuating fre-

quency.

• Notch indicator (above [NOTCH] switch) lights when

either the manual notch is ON.

• AGC (auto gain control) (p. 5-11)

➥ Push [AGC] switch several times to select

AGC FAST, AGC MID or AGC SLOW.

➥ Push [AGC VR] to turn the AGC time constant

manual setting ON and OFF.

• Rotate [AGC] control to adjust the time constant.

•

⁄4 function (p. 3-6)

➥ Push [1/4] to turn the

⁄4 function ON and OFF.

• Auto tuning function (p. 1-9)

➥ Push [AUTO TUNE] to turn the auto tuning func-

tion ON and OFF.

• The transceiver automatically tunes the desired sig-

nal within a ±500 Hz range.

IMPORTANT!

When receiving a weak signal, or receiving a signal

with interference, the automatic tuning function may

not tune properly, or tune onto an undesired signal.

Appears

[KEY SPEED]

[TX] indicator

[RX] indicator

[AF] [CW][TRANSMIT] Main dial

Band keys

RECEIVE AND TRANSMIT

4-5

Convenient functions for transmit

About CW reverse mode

CW-R (CW Reverse) mode uses the opposite side

band to receive CW signals.

Use when interfering signals are near a desired signal

and you want to use CW-R to reduce the interference.

➥ During CW mode, push [CW] to select CW and CW-

R mode.

About CW pitch control

The received CW audio pitch and CW side tone can

be adjusted to suit your preference (from 300 to

900 Hz in 5 Hz steps). This does not change the oper-

ating frequency.

➥ Rotate [CW PITCH] to suit your preference.

• Adjustable within 300 to 900 Hz in 25 Hz steps.

CW side tone function

When the transceiver is in the receive condition (and

the break-in function is OFF— p. 6-3) you can listen to

the CW side tone without actually transmitting.

This allows you to match your transmit frequency ex-

actly to another station’s by matching the audio tone.

You can also use the CW side tone (be sure to turn

OFF break-in!) to practice CW sending. CW side tone

level can be adjusted with [MONI GAIN].

[MONI GAIN]

[CW PITCH]

Push

BFO

CW-R mode (USB side)

BFO

Desired signal

CW mode (LSB side)

Interference

Desired signalInterference

• Break-in function (p. 6-3)

➥ Push [VOX/BK-IN] several times to select the

break-in OFF, semi break-in and full break-in.

• “BK IN” or “F-BK IN” appears when the semi break-in

or full break-in function is ON, respectively.

RECEIVE AND TRANSMIT

4-6

APF (Audio Peak Filter) operation

The APF changes the audio frequency response by

boosting a particular frequency to enhance a desired

CW signal.

The peak frequency can be adjusted with [DIGI-SEL]

control when “APF” is selected for “DIGI-SEL VR Op-

eration” in miscellaneous (others) set mode (p. 12-18).

q During CW mode, push [APF/TPF] to turn the audio

peak filter ON and OFF.

• “ ” appears in the display and [APF/TPF] indicator

above this switch lights green.

w Push [APF/TPF] for 1 sec. several times to select

the desired audio filter width.

• 320, 160 and 80 Hz filters are available.

e If “APF” is selected for “DIGI-SEL VR Operation,”

rotate [DIGI-SEL] control to suit your preference.

About 137 kHz band operation (Europe, UK, Italy, Spain, France versions only)

137 kHz band, within the 135.7 kHz to 137.8 kHz

range, operation in CW mode is optionally available

with the IC-7800.

The RF signal from [X-VERTER] is used for the

137 kHz band operation, and an external amplifier unit

is necessary.

See the connection diagram below for reference.

• Connection diagram for 137 kHz band operation

BPF

LPF

Power amplifier with T/R switching unit

for 137 kHz

to [X-VERTER]

to [RELAY] (for transmit/receive control)

to [ACC2] pin 6*

*Transverter ON/OFF control signal related to the power amplifier

unit main power, if desired.

• ON: 2–13.8 V DC input (more than 10 kΩ impedance)

• OFF: Less than 2 V DC

APF

[DIGI-SEL]

(SUB)

[DIGI-SEL]

(MAIN)

[APF/TPF]

(MAIN)

[APF/TPF]

(SUB)

RECEIVE AND TRANSMIT

4-7

■ Electronic keyer functions

The IC-7800 has a number of convenient functions for

the built-in electronic keyer.

q During CW mode, push [EXIT/SET] several times

to normal screen, if necessary.

w Push [F-3•KEYER] to select memory keyer screen.

e Push [EXIT/SET] to select memory keyer menu

screen.

r Push one of the multi-function keys ([F-1] to [F-4]) to

select the desired menu. See the diagram below.

• Push [EXIT/SET] to return to the previous display.

• Memory keyer screen (p. 4-8)

• Memory keyer menu screen

• Memory keyer edit screen (p. 4-9)

• Contest number set mode (p. 4-10)

• Keyer set mode screen (p. 4-11)

[EXIT/SET][CW][F-1]–[F-4]

RECEIVE AND TRANSMIT

Icom IC-7800 Handleiding

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