Icom IC-7800 User Manual

THE TRANSCEIVER

i7800

Instruction Manual

A-6328H-1EX-r

Printed in Japan

© 2004 Icom Inc.

i

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 prod­uct 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 philoso­phy of “technology first.” Many hours of research and development went
into the design of your IC-7800.

D

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

RR

WARNING

Personal injury, fire hazard or electric shock may
occur.

CAUTION Equipment damage may occur.

NOTE

If disregarded, inconvenience only. No risk of person­al injury, fire or electric shock.

ii

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 vol­ume levels. Hearing experts advise against continuous
high volume operation. If you experience a ringing in
your ears, reduce the volume or discontinue use.

R CAUTION! NEVER change the internal 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 dam­age 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 al­cohol 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 en­vironments 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 inadver­tent 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 dam­age the transceiver or microphone.

The LCD display may have cosmetic imperfections that
appear as small dark or light spots. This is not a mal­function 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 mag­netic navigation compass to prevent erroneous indica­tions.

Turn [I/O] switch (on the rear panel) OFF and/or dis­connect 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 1⁄8″ plugs …………………………… 3

!1 3-conductor 1⁄8″ plugs …………………………… 2
!2 3-conductor 1⁄4″ 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

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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
D1⁄4 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

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TABLE OF CONTENTS

vi

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

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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

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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 trans­ceiver 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 tun­ing.

• 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 conve­nience. (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)

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PANEL DESCRIPTION

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

Continuously varies the RF output power from min­imum (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 trans­mission without pushing the transmit switch or PTT switch
when you speak into the microphone; then, automatically re­turns 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. Ac­tivate 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

1

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 re­moves noise output from the speaker (closed con­dition) when no signal is received.

• The squelch is particularly effective for FM. It is also
available for other modes.

• 11 to 12 o’clock position is recommended for any set­ting of the [SQL] control.

Deep

Deep

S-meter
squelch

Noise squelch

Squelch

is open.

Squelch

threshold

Shallow

Shallow

Sensitivity
increases

Sensitivity

decreases

Audio output
increases

Audio output

decreases

Slow

Fast

1

PANEL DESCRIPTION

@6

@4

@5

@1
@2

@3

#2

!9

#0 #1@9

@0

#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 cir­cuit 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 broadcast­ing 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 com­munication or when propagation conditions are poor.

➥ Turns the 1⁄4

-speed tuning function ON
and OFF in SSB data, CW, RTTY and
PSK modes. (p. 3-6)

•1⁄4 function sets dial rotation to 1⁄4 of normal

speed for fine tuning.

➥ Switches between the tone encoder,

tone squelch function and no-tone oper­ation when pushed in FM mode. (pgs. 4­32, 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 oper­ation.

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

Adjusts the VOX deactivate level to prevent un­wanted 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

1

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 read­ability.

• 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 igni­tion 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.

$5

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

1

PANEL DESCRIPTION

#5
#6

$1 $2

#8
#9

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

#7

$0

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

1-7

$9 MEMORY UP/DOWN SWITCHES [YY]/[ZZ] (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 dis­play 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 au­tomatically.

➥ 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)

1

PANEL DESCRIPTION

1-8

■ Front panel (continued)

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

Programs the selected readout frequency and op­erating 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 fre­quencies 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 operat­ing 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 pro­grammed frequencies and operating modes can be
recalled, starting from the most recent.

• The memo pad capacity can be expanded from 5 to 10
in set mode. (p. 12-16)

^2

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

1

PANEL DESCRIPTION

%7 %8 ^0 ^1%9

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

^2 ^3

^5

^4

^6
^7

^9

^8

1-9

^6 NOTCH SWITCH [NOTCH] (for SUB band; p. 5-19)
^7

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 cir­cuit 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 read­out 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 du­alwatch.

&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), se­lects 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 fre­quency 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 du­alwatch.

&9 SUB DIAL

Changes the displayed frequency in sub band.

IMPORTANT!

When receiving a weak signal, or receiving a sig­nal with interference, the automatic tuning func­tion may tune the receiver to an undesired signal.

1

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

1

PANEL DESCRIPTION

*0

(5 (6 (7 (8

*3*1 *2*4

*8

*7

*9
(0

(2
(3
(4

*6

*5

(1

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 prese­lector 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 fil­ter 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 fre­quency without shifting the transmit frequency.

This is useful for fine tuning stations calling you on off-fre­quency or when you prefer to listen to slightly different­sounding voice characteristics, etc.

(3∂∂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-

6)

• 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 avail­able 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-

6)

(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

1

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 connec­tor.

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

Connect this terminal to a ground to prevent electri­cal 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 cir­cuit 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 cir­cuit 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.

!4

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

IN

[RX ANT A/B]

OUT

Transmit/Receive
switching circuit

1

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

RS

-

232C

KEY BOARD

EXT-DISPLAY

A

B

S/P DIF

EXT-SP

ANT 1

ANT 2

ANT 3

ANT 4

GND

AC

I

X-VERTER

A

IN

RX ANT

B

RX ANT

OUT

IN

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

!2

!3

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 lin­ear amplifier.

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

Goes to ground when transmitting to control an ex­ternal 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 1⁄4 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 mem­ory or electronic keyer control.
Transceiver mute control line (both transmit and re­ceive) is also supported.

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

Outputs the receiving signal strength level signal,
transmit output power, VSWR, ALC, speech com­pression, 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 out­puts 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 con­nect the IC-7800 to a PC.
Can be used for remotely control the IC-7800 with­out the optional CT-17, or for RTTY/PSK31 de­coded 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 op­erations.

• 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 Net­work).

+

_

_

(+)

(_)

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).

1

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 op­eration.

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 compres­sion 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 chan­nel 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.

!4

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

1

PANEL DESCRIPTION

q w e t uy ir q w e t uyr

!7

!4 !5

!6

!4
!5

!3

!2

!1

!0

o

!8

1-15

■ Screen menu arrangement

The following screens can be selected from the start
up screen. Choose the desired screen using the fol­lowing chart.

Pushing [EXIT/SET] several times returns to the start
up screen. See p. 12-3 for set mode arrangement.

1

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 equip­ment included with the IC-7800, see ‘Supplied acces­sories’ 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 ade­quate air circulation, free from extreme heat, cold, or
vibrations, and away from TV sets, TV antenna ele­ments, radios and other electromagnetic sources.

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

2

INSTALLATION AND CONNECTIONS

2-3

■ Grounding

To prevent electrical shock, television interference
(TVI), broadcast interference (BCI) and other prob­lems, ground the transceiver through the GROUND
terminal on the rear panel.

For best results, connect a heavy gauge wire or strap
to a long earth-sunk copper rod. Make the distance be­tween the [GND] terminal and ground as short as pos­sible.

R WARNING: NEVER connect the [GND]

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

■ Antenna connection

For radio communications, the antenna is of critical im-

portance, along with output power and receiver sensi­tivity. 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 de­sired 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, lo­cated 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 transis­tors. 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.

2

INSTALLATION AND CONNECTIONS

PL-259 CONNECTOR INSTALLATION EXAMPLE

30 mm ≈9⁄

8 in 10 mm ≈

3

⁄

8 in 1–2 mm ≈

1

⁄

16 in

q

Coupling ring

w

e

r

30 mm

10 mm (soft solder)

10 mm

Soft
solder

1–2 mm

solder solder

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

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

Slide the connector
body on and solder it.

Screw the coupling
ring onto the
connector body.

2-4

■ Required connections

DD

Front panel

DD

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

RS

-

232C

KEY BOARD

EXT-DISPLAY

A

B

S/P DIF

EXT-SP

ANT 1

ANT 2

ANT 3

ANT 4

GND

AC

I

X-VERTER

A

IN

RX ANT

B

RX ANT

OUT

IN

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 elec­trical shocks, TVI and oth­er problems.

AC outlet
R WARNING:
Use the supplied
AC power cable
only.

NOTE: Attach the sup-

plied antenna connec­tor cap when no anten­na or external equip­ment 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

2

INSTALLATION AND CONNECTIONS

2-5

■ Advanced connections

DD

Front panel

DD

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

RS

-

232C

KEY BOARD

EXT-DISPLAY

A

B

S/P DIF

EXT-SP

ANT 1

ANT 2

ANT 3

ANT 4

GND

AC

I

X-VERTER

A

IN

RX ANT

B

RX ANT

OUT

IN

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 con­necting a PC to [REMOTE].

MIC

Headphones

CF (Compact Flash) memory card

The AFSK modulation signal can also
be input to [MIC].

2

INSTALLATION AND CONNECTIONS