Icom IC-7851 Instruction Manual

THE TRANSCEIVER

i7851

Instruction Manual

A-7205H-1EX-0a

Printed in Japan

© 2015 Icom Inc.

i

FOREWORD

Thank you for choosing the IC-7851. The IC-7851 has many built-in high tech­nology circuitry and unique functions, such as the Dualwatch on the Main and
Sub bands, a high speed spectrum scope scan, a high-resolution waterfall
screen, and many other outstanding features.

The internal frequency signals in a radio utilizing a PLL are not always suf­ficiently pure. This results in a considerable number of unwanted spurious
components, called phase noise, in its frequency spectrum. We focused inten­sively in drastically reducing the phase noise of LO (Local Oscillator) because
the phase noise degrades the interference rejection and noise characteristics
of the receiver. As a result, we succeeded in developing an LO with high pu­rity outputs so that results in an RMDR (Reciprocal Mixing Dynamic Range)
of 110 dB with newly developed 1.2 kHz Optimum Roofing Filter. Currently no
competitors have been able to achieve this extremely high result performance.
We believe we would not have been able to exceed the standard specifica­tions without our full focus on LO purity.

In addition, Icom that has chosen to base the IC-7851 on an up-conversion,
double super-heterodyne receiver design, which has many advantages over
traditional receiver designs.

We are proud to have developed the IC-7851 for your amateur radio activities,
and hope it brings you years of enjoyable operation.

Please read this instruction manual thoroughly before using the IC-7851.

ii

IMPORTANT

READ THIS INSTRUCTION MANUAL CAREFULLY before at-

tempting to operate the transceiver.

SAVE THIS INSTRUCTION MANUAL. This manual contains important

safety and operating instructions for the IC-7851.

EXPLICIT DEFINITIONS

WORD DEFINITION

R DANGER!

Personal death, serious injury or an explosion may occur.

R WARNING!

Personal injury, fire hazard or electric shock may occur.

CAUTION

Equipment damage may occur.

NOTE

Recommended for optimum use. No risk of personal inju­ry, fire or electric shock.

TRADEMARKS

Icom, Icom Inc. and the Icom logo are registered trademarks of Icom
Incorporated (Japan) in Japan, the United States, the United Kingdom,
Germany, France, Spain, Russia and/or other countries.

This product includes “zlib” open source software, and is licensed according to the open source software li­cense.
This product includes “libpng” open source software, and is licensed according to the open source software li­cense.

Refer to the Text files in the License folder of included CD for information on the open source software being used
by this product.

DISPOSAL

The crossed-out wheeled-bin symbol on your product, literature, or packaging reminds you that in
the European Union, all electrical and electronic products, batteries, and accumulators
(rechargeable batteries) must be taken to designated collection locations at the end of their work­ing life. Do not dispose of these products as unsorted municipal waste.
Dispose of them according to the laws in your area.

iii

PRECAUTIONS

R DANGER 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. The continuous high volume operation
may cause a ringing in your ears. If you experience
the ringing, reduce the volume level or discontinue
use.

R WARNING! NEVER operate or touch the

transceiver with wet hands. This may result in an elec­tric shock or damage to the transceiver.

R WARNING! NEVER let metal, wire or other ob-

jects protrude into the transceiver or into connectors
on the rear panel. This may result in an electric shock.

R WARNING! Immediately turn the transceiver

power OFF and remove the power cable if it emits an
abnormal odor, sound or smoke. Contact your Icom
dealer or distributor for advice.

CAUTION: NEVER put the transceiver in any un-

stable place (such as on a slanted surface or vibrated
place). This may cause injury and/or damage to the
transceiver.

CAUTION: NEVER put the transceiver’s rear

panel side down after lifting up the transceiver by
holding rack mounting handle. This may scratch the
surface of the place or damage the connectors on the
transceiver’s rear panel.

CAUTION: NEVER change the internal settings

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.

CAUTION: NEVER block any cooling vents on the

top, rear or bottom of the transceiver.

CAUTION: NEVER expose the transceiver to rain,

snow or any liquids.

CAUTION: NEVER install the transceiver in a

place without adequate ventilation. Heat dissipation
may be reduced, and the transceiver may be dam­aged.

CAUTION: The transceiver weighs approximately

23.5 kg (52 lb). Always have two people available to
carry, lift or turn over the transceiver.

CAUTION: The line-voltage receptacle must be

near the transceiver and must be easily accessible.

DO NOT use extension cords.
DO NOT

use harsh solvents such as benzine or al­cohol when cleaning, as they can damage the trans­ceiver’s surfaces.

DO NOT

push the PTT switch when you don’t actu-

ally desire to transmit.

DO NOT use or store the transceiver in areas with

temperatures below ±0°C (+32°F) or above +50°C
(+122°F).

DO NOT place the transceiver in excessively dusty

environments or in direct sunlight.

DO NOT place 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.

BE CAREFUL!

NEVER touch the transceiver top

cover when transmitting continuously for long periods
of time. The top cover may be hot.

Use Icom microphones only (supplied or optional).
Other manufacturers’ microphones have different pin
assignments, and connection to the IC-7851 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 mar itime 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.

iv

FOR CLASS B UNINTENTIONAL RADIATORS

This equipment has been tested and found to comply
with the limits for a Class B digital device, pursuant to
part 15 of the FCC Rules. These limits are designed to
provide reasonable protection against harmful interfer­ence in a residential installation. This equipment gen­erates, uses and can radiate radio frequency energy
and, if not installed and used in accordance with the
instructions, may cause harmful interference to radio
communications. However, there is no guarantee that
interference will not occur in a particular installation.
If this equipment does cause harmful interference to
radio or television reception, which can be determined
by turning the equipment off and on, the user is en­couraged to try to correct the interference by one or
more of the following measures:

• Reorient or relocate the receiving antenna.

• Increase the separation between the equipment

and receiver.

• Connect the equipment into an outlet on a circuit dif­ferent from that to which the receiver is connected.

• Consult the dealer or an experienced radio/TV

technician for help.

CAUTION: Changes or modifications to this device,
not expressly approved by Icom Inc., could void your
authority to operate this device under FCC regula­tions.

FCC INFORMATION

ABOUT THE SUPPLIED CD

This device complies with Part 15 of the FCC Rules.
Operation is subject to the following two conditions: (1)
this device may not cause harmful interference, and
(2) this device must accept any interference received,
including interference that may cause undesired op­eration.

WARNING: MODIFICATION OF THIS DEVICE TO
RECEIVE CELLULAR RADIOTELEPHONE SERVICE

SIGNALS IS PROHIBITED UNDER FCC RULES AND
FEDERAL LAW.

The following instructions and installers are included
on the CD.

• Instruction manual

Instructions for the full operations, the same as this

manual

• Schematic diagram

Includes the schematic and block diagrams

• Adobe® Reader® Installer

Installer for Adobe® Reader

®

A PC with the following Operating System is required.

• Microsoft

®

Windows® 8.1, Microsoft® Windows

®

8, Microsoft® Windows® 7 , or Microsoft® Windows

Vista

®

Starting the CD

D

Insert the CD into the CD drive. q

• Double click “Menu.exe” on the CD.

• Depending on the PC setting, the Menu screen shown

below is automatically displayed.

Click the desired button to open the file. w

• To close the Menu screen, click [Quit].

To read the Instruction manual or Schematic diagram,
Adobe® Reader® is required. If you have not installed it,
please install the Adobe® Reader® on the CD or down­loaded it from Adobe Systems Incorporated’s web

site.

Quits the Menu screen

Installs the Adobe® Reader

®

Opens the
Instruction manual
(this manual)

Opens the
Schematic diagram

v

FUNCTIONS AND FEATURES of Adobe® Reader

®

The following functions and features can be used with Adobe® Reader®.

• Keyword search

Click “Find (Ctrl+F)” or “Advanced

Search (Shift+Ctrl+F)” in the Edit
menu to open the search screen.

This is convenient when search-

ing for a particular word or phrase
in this manual.

* The Menu screen may differ, de-

pending on the Adobe® Reader®
version.

• Find screen

• Advanced search screen

Click to open the Find or Search
screen or Advanced search screen.

• Printing out the desired pages.

Click “Print...(Ctrl+P)” in File menu, and then select

the paper size and page numbers you want to print.

* The printing setup may differ, depending on the

printer. Refer to your printer’s instruction manual
for details.

* Select “A4” size to print out the page in the equal-

ized size.

• Read Out Loud feature.

The Read Out Loud feature reads aloud the text in

this Instruction Manual.
Refer to the Adobe® Reader® Help for the details.
( This feature may not be usable, depending on your

PC environment including the operating system.)

* The screen may differ, depending on the Adobe® Reader®

version.

vi

DESCRIPTION INFORMATION

This instruction manual is described based on the following manner.

“ ” (Quotation marks): Used to indicate icons, setting items, and screen titles displayed on the screen.
[ ] (brackets): Used to indicate keys, dials, and knobs.

Routes to the Set mode and setting screen descriptions

Routes to the Set mode, setting screen and the setting items are described in the following manner.

About the transceiver’s illustrations
To indicate the keys and knobs in the operating steps, the transceiver is illustrated as illustrated below.

Band edge warning beep



This function allows you to hear a beep tone when
you tune in or out of an amateur band’s frequency
range. A regular beep sounds when you tune into a
range, and a lower tone error beep will sound when
you tune out of a range.

 The Multi-function screens are OFF:

Select the “Beep (Band Edge)” item in the Others q
set screen.

SET [F-7]  OTHERS [F-5]  Beep (Band Edge)

Rotate [MAIN DIAL] to select the option. w

• Band Edge Beep options:

OFF: Band edge beep is OFF.
ON (Default): When you tune into or out of the de-

fault amateur band’s frequency range,
a beep sounds. (default)

SET [F-7]  OTHERS [F-5]  Beep (Band Edge)

The Set mode menu screen.

The Multi-function screens are OFF.

The Others set screen.

() Multi-function keys Band key

(F) Function keys Mode keys

Also, the keys and knobs are described in the following
manner.

() Multi-function keys
Example:

Push the Multi-function [METER]() key.

(F) Function key
Example: Push [SCOPE](F).

Mode key
Example: P

ush the Mode key [SSB].

vii

AC power cable q

†

.................................................. 1

Rack mounting handles w ................................ 1 pair

Screws for rack mounting handles e ................... 1 set

SD card r .................................................................1

Feet t .............................................................. 1 pair

Spare fuse (2 A) y .................................................. 1

RCA plugs u ........................................................... 2

DC plug i ............................................................... 1

2-conductor o

1

⁄8″ plugs .......................................... 3

!0 3-conductor 1⁄8″ plugs .......................................... 2

!1 3-conductor 1⁄4″ plugs .......................................... 3

!2 ACC plugs (7-pin) ................................................ 2

!3 ACC plugs (8-pin) ................................................ 2

!4 Hexagonal wrench‡ .............................................. 1

!5 Main dial‡ ............................................................. 1

!6 CD ....................................................................... 1

†

May differ from that shown depending on the version.

‡

See page 3-3 for the Main dial attachment details.

SUPPLIED ACCESSORIES

q

!0 !1 !2 !3

!4 !6!5

yu io

w

er t

viii

TABLE OF CONTENTS

PANEL DESCRIPTION Section 1

F  ront panel ……………………………………………………………… 1-2
R  ear panel ………………………………………………………………1-12
D  isplay ……………………………………………………………………1-14
S  creen menu arrangement …………………………………………… 1-16

SET MODE ITEMS Section 2

A  bout the Setting screen configuration ……………………………… 2-2
S  COPE SET …………………………………………………………… 2-3
V  OICE SET ……………………………………………………………… 2-4
K  EYER 001 ……………………………………………………………… 2-4
K  EYER CW-KEY ……………………………………………………… 2-5
R  TTY LOG SET ………………………………………………………… 2-5
R  TTY DECODE SET …………………………………………………… 2-5
P  SK LOG SET ………………………………………………………… 2-6
P  SK DECODE SET …………………………………………………… 2-6
S  CAN SET ……………………………………………………………… 2-6
A  UDIO SCOPE SET …………………………………………………… 2-6
L  EVEL SET ……………………………………………………………… 2-7
A  CC SET ………………………………………………………………… 2-8
D  ISPLAY SET …………………………………………………………… 2-10
T  IME SET ………………………………………………………………2-11
O  THERS SET ……………………………………………………………2-11
L  OAD SET ………………………………………………………………2-16
S  AVE SET ……………………………………………………………… 2-16
A  NT TYPE ……………………………………………………………… 2-16
V  OX ……………………………………………………………………… 2-17
N  B …………………………………………………………………………2-17
F  ILTER SHAPE SET ……………………………………………………2-17

INSTALLATION AND CONNECTIONS Section 3

U  npacking ……………………………………………………………… 3-2
S  electing a location …………………………………………………… 3-2
G  rounding ……………………………………………………………… 3-2
A  ttaching the rack mounting handle ………………………………… 3-2
C  onnecting antenna …………………………………………………… 3-3
R  equired connections ………………………………………………… 3-4

D Front panel (Electronic keyer and microphone) ………………… 3-4
D Rear panel (Basic connection) …………………………………… 3-4

A  dvanced connections ………………………………………………… 3-5

D Front panel (Microphone, headphones and SD card) …………… 3-5
D Rear panel (Optional products and external equipment) ……… 3-5
D Rear panel (Optional products and external equipment) ……… 3-6
D Rear panel (External keypad and meter) ………………………… 3-6

L  inear amplifier connections ………………………………………… 3-7

D Connecting the IC-PW1/EURO …………………………………… 3-7
D Connecting a non-Icom linear amplifier …………………………… 3-7

T  ransverter jack information …………………………………………… 3-8
F  SK and AFSK (SSTV) connections ………………………………… 3-8

ix

TABLE OF CONTENTS

M  icrophones (optional products) ……………………………………… 3-9

D SM-50 ………………………………………………………………… 3-9
D SM-30 ………………………………………………………………… 3-9
D HM-36 ………………………………………………………………… 3-10

BASIC OPERATION Section 4

W  hen first applying power …………………………………………… 4-2
P  ower ON ……………………………………………………………… 4-3

R D esetting the CPU (initial setup) …………………………………… 4-3
A  djusting the Volume level …………………………………………… 4-4
A  djusting the Squelch level …………………………………………… 4-4
A  djusting the RF gain ………………………………………………… 4-4
S  electing Main and Sub bands ……………………………………… 4-5
S  electing the VFO or memory mode ………………………………… 4-5
S  electing an operating band…………………………………………… 4-6

U D sing the band stacking registers ………………………………… 4-6
S  etting the frequency ………………………………………………… 4-7

T D uning with [DIAL] …………………………………………………… 4-7

A D bout the Quick tuning step ………………………………………… 4-7

S D electing the Fine tuning function ………………………………… 4-8

A D bout the Auto tuning step function ……………………………… 4-8

A D bout the 1⁄4 tuning step function ………………………………… 4-9

E D ntering the frequency with the keypad …………………………… 4-9
O  perating mode selection ……………………………………………… 4-10
S  electing the Meter readout ……………………………………………4-11

D D igital multi-function meter …………………………………………4-11

S D electing the meter type …………………………………………… 4-12
D  ial lock function ………………………………………………………4-12
B  asic transmit operation ………………………………………………4-13

T D ransmitting ………………………………………………………… 4-13

A D djusting the microphone gain …………………………………… 4-13

D D rive gain adjustment ………………………………………………4-14

T D ransmit power limit …………………………………………………4-14
B  and edge warning beep ………………………………………………4-15

E D ntering the user band edge ……………………………………… 4-16
A  bout the 5 MHz frequency band operation (USA version only) …4-18

RECEIVE AND TRANSMIT Section 5

C onvenient functions for Receive …………………………………… 5-2
C onvenient functions for Transmit …………………………………… 5-3
O perating SSB ………………………………………………………… 5-4
O perating CW …………………………………………………………… 5-5

A D bout the CW pitch control ………………………………………… 5-6

A D PF (Audio Peak Filter) operation ………………………………… 5-6

A D djusting the Key speed …………………………………………… 5-7

A D bout the CW reverse mode ……………………………………… 5-7

C D W side tone function ……………………………………………… 5-7

A D bout 137 kHz band operation (Europe version only) ………… 5-8

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TABLE OF CONTENTS

E lectronic keyer functions ……………………………………………… 5-9

M D emory keyer screen ……………………………………………… 5-10
E D diting a Keyer memory ……………………………………………5-11
C D ontest number set mode ………………………………………… 5-12
K D eyer set mode ……………………………………………………… 5-13

O perating RTTY (FSK) …………………………………………………5-14

A D bout the RTTY reverse mode ……………………………………5-15
T D win peak filter ………………………………………………………5-15
F D unctions for the RTTY decoder display …………………………5-16
S D etting the decoder threshold level …………………………………5-17
R D TTY memory transmission ……………………………………… 5-17
A D utomatic transmission/reception setting ………………………… 5-18
E D diting the RTTY memory …………………………………………5-19
T D urning ON the RTTY log ……………………………………………5-20
C D onfirm the RTTY log contents ……………………………………5-21
R D TTY decode set mode ……………………………………………5-22

O perating PSK ………………………………………………………… 5-24

V D ector indicator and Waterfall display ………………………………5-25
F D unctions for the PSK decoder display …………………………… 5-26
A D bout the BPSK and QPSK modes ……………………………… 5-27
A D bout the BPSK31 and BPSK63 modes …………………………5-27
S D etting the decoder threshold level …………………………………5-28
A D bout the PSK reverse mode ……………………………………… 5-28
A D FC/NET function ……………………………………………………5-28
P D SK memory transmission ………………………………………… 5-29
A D utomatic transmission/reception setting ………………………… 5-30
E D diting the PSK memory ……………………………………………5-31
T D urning ON the PSK log ……………………………………………5-32
C D onfirm the PSK log contents ………………………………………5-33

P D SK decode set mode ……………………………………………… 5-34
O perating AM or FM ……………………………………………………5-36
R epeater operation ……………………………………………………5-37

C D hecking the repeater input signal …………………………………5-37

R D epeater tone frequency setting ……………………………………5-38
T one squelch operation …………………………………………………5-39
D ata mode (AFSK) operation …………………………………………5-40

SCOPE OPERATION Section 6

S pectrum scope screen ……………………………………………… 6-2

O D perating the Spectrum scope …………………………………… 6-3

C D enter mode ………………………………………………………… 6-4

F D ixed mode …………………………………………………………… 6-5

D D ual scope screen …………………………………………………… 6-6

M D ini scope screen …………………………………………………… 6-6

S D cope attenuator …………………………………………………… 6-7

A D djusting the Reference level ……………………………………… 6-8

S D weep speed ………………………………………………………… 6-9

S D cope set screen ……………………………………………………6-10

U D SB mouse operation ……………………………………………… 6-14
A udio scope screen ……………………………………………………6-15

A D udio scope set mode ………………………………………………6-16

xi

TABLE OF CONTENTS

Functions for Receive Section 7

P  reamplifier ……………………………………………………………… 7-2
A  ttenuator ……………………………………………………………… 7-2
R  IT function ……………………………………………………………… 7-3
ï RIT monitor function ………………………………………………… 7-3
A  GC function control …………………………………………………… 7-4

ï Selecting the preset value ………………………………………… 7-4
ï Adjusting the AGC time constant ………………………………… 7-4
ï Setting the AGC time constant preset value ……………………… 7-4

T  win PBT operation …………………………………………………… 7-5
I  F filter selection ………………………………………………………… 7-6

ï IF filter selection ……………………………………………………… 7-6
ï DSP filter shape ……………………………………………………… 7-7
ï Roofing filter selection ……………………………………………… 7-7
ï 1.2 kHz Filter calibration …………………………………………… 7-8
ï Filter shape set mode ……………………………………………… 7-9

D  ualwatch operation ……………………………………………………7-10
N  oise blanker ……………………………………………………………7-11
ï NB Set mode …………………………………………………………7-11
N  oise reduction ………………………………………………………… 7-12
D  igital selector …………………………………………………………7-12
N  otch function …………………………………………………………… 7-13

ï Auto notch function …………………………………………………7-13
ï Manual notch function ………………………………………………7-13

A  uto tuning function ……………………………………………………7-14

FUNCTIONS FOR TRANSMIT Section 8

About the  VOX function ………………………………………………… 8-2

Turning ON D the VOX function ……………………………………… 8-2
A D djusting the VOX function ………………………………………… 8-2
V D OX set mode ……………………………………………………… 8-3

About the  Break-in function …………………………………………… 8-4

S D emi break-in operation …………………………………………… 8-4
F D ull break-in operation ……………………………………………… 8-4

About the  ∂TX function ………………………………………………… 8-5

∂ D TX monitor function ……………………………………………… 8-5
About the  Monitor function …………………………………………… 8-5
Setting the  Speech compressor (SSB only) ………………………… 8-6
Setting the  Transmit filter width (SSB only) ………………………… 8-6
Operating the  Split frequency ………………………………………… 8-7
About the  Quick split function ………………………………………… 8-8

S D plit lock function …………………………………………………… 8-8

VOICE RECORDER FUNCTIONS Section 9

R  ecording function ……………………………………………………… 9-2
R  ecording a QSO ……………………………………………………… 9-3

Q D uick recording ……………………………………………………… 9-3

B D asic recording ……………………………………………………… 9-3
P  laying back the recorded audio (QSO) ……………………………… 9-4
O  perating while playing back ………………………………………… 9-5

xii

TABLE OF CONTENTS

D  eleting a recorded audio file ………………………………………… 9-6
D  eleting a recorded audio folder ……………………………………… 9-6
I  nstant replay function ………………………………………………… 9-7
R  ecording the communication audio ………………………………… 9-8
P  laying back the recorded audio ……………………………………… 9-8
R  ecording or playing back a TX message …………………………… 9-9

R D ecording …………………………………………………………… 9-9
P D laying back ………………………………………………………… 9-9
P D rogramming a TX message name ………………………………9-10

T  ransmitting a recorded message ……………………………………9-11

S D ingle TX ………………………………………………………………9-11
R D epeat TX …………………………………………………………… 9-11

S D etting the transmit level …………………………………………… 9-12
V  oice Set mode ………………………………………………………… 9-13
S  aving a voice memory onto an SD card or USB flash drive ………9-14

USING AN SD CARD OR USB MEMORY Section 10

A bout the SD card ………………………………………………………10-2

I D nserting the SD card ………………………………………………10-2

R D emoving the SD card ………………………………………………10-2
S D/USB-Memory menu screen ………………………………………10-3

S D ave set screen ………………………………………………………10-4

L D oad set screen ………………………………………………………10-4
S aving the setting data onto an SD card or USB flash drive ………10-5
L oading the saved data files onto an SD card or USB flash drive … 10-6
S aving with a different file name ………………………………………10-7
D eleting a data file ………………………………………………………10-8
F ormatting an SD card or USB flash drive …………………………… 10-8
U nmounting an SD card or USB flash drive ………………………… 10-9
S creen Capture function …………………………………………… 10-10

C D apturing the screen ……………………………………………… 10-10

V D iewing the captured screen …………………………………… 10-10

MEMORY OPERATION Section 11

M emory channels ………………………………………………………11-2
M emory channel selection …………………………………………… 11-2

U D sing the M-CH [p] or [q] keys ……………………………………11-2

U D sing the keypad ……………………………………………………11-2
M emory list screen ………………………………………………………11-3

S D electing a memory channel using the Memory list screen …… 11-3

C D onfirming programmed memory channels ……………………… 11-3
Entering  Memory channel contents …………………………………11-4

Entering D in the VFO mode …………………………………………11-4

Entering D in the Memory mode ………………………………………11-4
C opying Memory contents ……………………………………………11-5

C D opying in the VFO mode ………………………………………… 11-5

C D opying in the Memory mode ………………………………………11-5
M emory names …………………………………………………………11-6

E D diting (programming) memory names ……………………………11-6
M emory clearing………………………………………………………… 11-6

xiii

TABLE OF CONTENTS

M emo pads ………………………………………………………………11-7

E D ntering frequencies and operating modes into Memo pads ……11-7
C D alling up a frequency and operating mode from Memo pads …11-8
U D sing the Memo pad list screen ……………………………………11-8

SCANS Section 12

S can types ………………………………………………………………12-2
P reparation ………………………………………………………………12-3
S can set mode …………………………………………………………12-4
P rogrammed scan ………………………………………………………12-5
F ine programmed scan …………………………………………………12-6
M emory scan operation ………………………………………………12-7
S elect memory scan operation ………………………………………12-7
S etting select memory channels ………………………………………12-8

S D etting in the Scan screen …………………………………………12-8
S D etting in the Memory list screen ………………………………… 12-8

E D rasing the select scan setting ……………………………………12-8
∂ F scan operation ………………………………………………………12-9
F ine ∂F scan ……………………………………………………………12-9
T one scan …………………………………………………………… 12-10
V oice squelch control function ……………………………………… 12-10

ANTENNA TUNER OPERATION Section 13

A  ntenna connection and selection ……………………………………13-2
R  eceive Antenna-I/O selection ……………………………………… 13-2
A  ntenna memory settings ………………………………………………13-3

A D ntenna type selection ………………………………………………13-4

A D ntenna selection mode ……………………………………………13-5

T D emporary memory ………………………………………………… 13-5

R D eceive antenna I/O setting ………………………………………… 13-6
A  bout the Antenna tuner ………………………………………………13-7
U  sing the Antenna tuner operation ……………………………………13-7

I D f the tuner cannot tune the antenna ……………………………… 13-8

CLOCK AND TIMERS Section 14

T ime set mode …………………………………………………………14-2

S D etting the Date ………………………………………………………14-2

S D etting the Current time ……………………………………………14-2

S D etting the UTC Offset ………………………………………………14-2

S D electing the CLOCK2 Function ……………………………………14-3

S D etting the CLOCK2 UTC Offset …………………………………… 14-3

E D ntering the CLOCK2 Name ……………………………………… 14-3

S D etting the NTP Function ……………………………………………14-4

S D etting the NTP Server address ……………………………………14-4
S etting the Daily timer …………………………………………………14-5
S etting the Sleep timer …………………………………………………14-6
T imer operation ………………………………………………………… 14-6

xiv

SET MODE Section 15

S et mode description …………………………………………………… 15-2

S D et mode operation …………………………………………………15-2

S D creen arrangement …………………………………………………15-3
L evel set screen …………………………………………………………15-4
A CC set screen ………………………………………………………… 15-6
D isplay set screen …………………………………………………… 15-10
T ime set screen ……………………………………………………… 15-12
O thers set screen …………………………………………………… 15-13

MAINTENANCE Section 16

A  djusting the Main dial brake …………………………………………16-2
U  sing the Voice synthesizer operation ………………………………16-2
S  WR reading ……………………………………………………………16-3
C  alibration the Frequency (approximate) …………………………… 16-4
S  etting My call sign ……………………………………………………16-5
C  leaning ………………………………………………………………… 16-7
R  esetting the CPU ………………………………………………………16-7
A  bout protection indications ……………………………………………16-8
O  pening the transceiver’s case ………………………………………16-8
F  use replacement ……………………………………………………… 16-9
C  lock backup battery replacement ……………………………………16-9
T  roubleshooting ……………………………………………………… 16-10

D Transceiver power ………………………………………………… 16-10
D Transmit and receive ……………………………………………… 16-10
D Scanning …………………………………………………………… 16-11
D Display ……………………………………………………………… 16-11

UPDATING THE FIRMWARE Section 17

G  eneral …………………………………………………………………17-2
D Checking the firmware version …………………………………… 17-2
P  reparation ………………………………………………………………17-3
D File downloading …………………………………………………… 17-3
F  irmware update— using an SD card/USB flash drive ……………17-4

CONTROL COMMAND Section 18

Remote control (CI-V) information  …………………………………… 18-2

CI-V connection D …………………………………………………… 18-2

Preparing D ……………………………………………………………18-2

Data format D ……………………………………………………………18-2

Data content description D ………………………………………… 18-10

TABLE OF CONTENTS

xv

TABLE OF CONTENTS

SPECIFICATIONS AND OPTIONS Section 19

S  pecifications ……………………………………………………………19-2

D General ………………………………………………………………19-2
D Transmitter ……………………………………………………………19-2
D Receiver ……………………………………………………………… 19-3
D Antenna tuner ………………………………………………………… 19-3

O  ptions …………………………………………………………………19-4

CONNECTOR INFORMATION Section 20

A  CC socket ………………………………………………………………20-2
M  icrophone connector …………………………………………………20-3
[  ELEC-KEY] jack ………………………………………………………20-3
[  KEY] jack ……………………………………………………………… 20-3
[  EXT KEYPAD] jack …………………………………………………… 20-4
[  REF I/O] connector ……………………………………………………20-4
[  X-VERTER] connector …………………………………………………20-4
[  RELAY] jack …………………………………………………………… 20-4
[  METER] jack …………………………………………………………… 20-5
[  REMOTE] jack …………………………………………………………20-5
[  DC OUT] jack …………………………………………………………… 20-5
[  EXT-SP] jack …………………………………………………………… 20-5
[  S/P DIF] jack …………………………………………………………… 20-5
[  RX-I/O] connector ………………………………………………………20-5

INDEX

1-1

PANEL DESCRIPTION Section 1

F  ront panel ……………………………………………………………… 1-2
R  ear panel ………………………………………………………………1-12
D  isplay ……………………………………………………………………1-14
S  creen menu arrangement …………………………………………… 1-16

1-2

1

PANEL DESCRIPTION

q POWER KEY [POWER] (pp. 4-3, 14-6)

First, turn ON the internal power supply. The internal
power supply switch is located on the rear panel.
(p. 1-12)

Push to turn ON the transceiver power. 

• The [POWER] indicator above this key lights blue.

Hold down for 1 second to turn OFF the power. 

• The [POWER] indicator lights orange when the trans­ceiver is OFF, but the internal power supply is turned
ON.

w TRANSMIT KEY [TRANSMIT] (p. 4-13)

Push to transmit, release to receive.

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

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

e ANTENNA TUNER KEY [TUNER] (p.13-7)

Momentarily push to turn the tuner ON or OFF 
(bypass.)

• The [TUNER] indicator above this key lights white

when the tuner is turned ON, and goes off when the
tuner is turned OFF (bypassed).

Hold down for 1 second to manually start the 
tuner.

•

The [TUNER] indicator blinks red during manual tuning.

• When the tuner cannot tune the antenna, the tuning

circuit is automatically bypassed after 20 seconds.

r TIMER KEY [TIMER] (p. 14-5)

Push to turn ON or OFF the sleep or daily timer 
function.

• The [TIMER] indicator above this key lights white

when the timer is in use.

Hold down for 1 second to enter the Timer set 
screen.

t HEADPHONE JACK [PHONES]

(p. 3-5)

Connect standard stereo headphones.

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

• When headphones are connected, the internal speaker

and any connected external speaker do not function.

y

ELECTRONIC KEYER JACK [ELEC-KEY] (p. 20-3)

Connect a paddle to activate the internal electronic

keyer for CW operation.

• Select the internal electronic keyer, bug-key or straight

key operation in the Keyer set screen. (p. 5-13)

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

[KEY] on page 1-13.

• Set the keyer polarity (dot and dash) in the Keyer set

screen. (p. 5-13)

• Eight keyer memory channels can be used. (p. 5-11)

dash

dot

com



Front panel

q

w

e

r

t

y

u

i o !0 !1 !2 !3 !4 !5 !6

!8

!9

@1

@2

@0

!7

1-3

1

PANEL DESCRIPTION

u MICROPHONE CONNECTOR [MIC]

Connect an optional microphone.

• See page 3-4 for appropriate microphones.

• See page 20-3 for microphone connector information.

i SD CARD SLOT [SD CARD] (pp. 3-5, 10-2)

Insert the supplied SD card for both reading and stor­ing a wide variety of the transceiver’s information and
data.

• The indicator beside the slot lights, or blinks when read­ing from or writing to the card.

• Push the card once to remove it.

o USB INDICATOR [USB]

(p. 10-4)

Lights while accessing a USB flash drive inserted to

the [USB A] port.

!0

MONITOR GAIN CONTROL [MONI GAIN] (p. 8-5)

Rotate to adjust the transmit IF signal monitor level.
!1 COMPRESSION LEVEL CONTROL [COMP]

(p. 8-6)

Rotate to adjust the speech compression level in

SSB.

!2 DRIVE GAIN CONTROL [DRIVE] (p. 4-14)

Rotate to adjust the transmitter level at the driver

stage. Activates in all modes

(except SSB with [COMP]

OFF)

.

!3 VOX GAIN CONTROL [VOX GAIN] (p. 8-2)
 Rotate to adjust the transmit/receive switching

threshold level for VOX operation.

!4 ANTI VOX CONTROL [ANTI VOX] (p. 8-2)

Adjusts the VOX deactivate level to prevent un-

wanted VOX activation from the speaker or other

sounds.

!5 DISPLAY CONTRAST CONTROL [CONTRAST]

Adjusts the display contrast.

!6 DISPLAY BRIGHTNESS CONTROL [BRIGHT]

Adjusts the display brightness.

!7 MONITOR KEY [MONI] (p. 8-5)

Push to monitor your transmitted signal.

• The CW sidetone functions regardless of the [MONI] key

setting in the CW mode.

• The [MONI] indicator above this key lights white while

the function is activated.

!8 BREAK-IN DELAY CONTROL [DELAY] (p. 8-4)
Rotate to adjust the transmit-to-receive switching

delay time in the CW semi-break-in mode.

!9 ELECTRONIC CW KEYER SPEED CONTROL

[KEY SPEED] (p. 5-7)

Rotate to adjust the internal electronic CW keyer’s

speed to between 6 wpm (minimum) and 48 wpm
(maximum).

• The keyer’s speed is displayed.

@0 VOX/BREAK-IN KEY [VOX/BK-IN]
 Push to turn the VOX function ON or OFF in the

SSB, AM, or FM mode. (p. 8-2)

 Push to turn the break-in function ON (Semi break-

in, Full break-in)

or OFF in the CW mode. (p. 8-4)

 Hold down for 1 second to enter the VOX set

screen. (p. 8-3)

 What is the VOX function?

The VOX function (voice operated transmission) starts

transmission without pushing the transmit key 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 toggles between transmit and
receive with CW keying. Full break-in (QSK) can moni­tor the receive signal during keying.

@1 RF POWER CONTROL [RF PWR] (p. 4-13)

Rotate to continuously vary the RF output power

from less than 5 watts (minimum) to 200* watts
(maximum).

*AM mode: less than 5 W to 50 W

• The output power setting is displayed.

@2 MIC GAIN CONTROL [MIC]

Rotate to adjust microphone gain.

• The transmit audio tone in the SSB, AM, or FM mode

can be independently adjusted in the Level set screen.

(p. 4-13)

 How to set the microphone gain.

Adjust the [MIC] control so that the ALC meter swings
within the ALC range during normal voice level trans­mission in the SSB or AM mode. (The ALC meter must
be selected.)

1-4

1

PANEL DESCRIPTION

@3 AGC CONTROL [AGC] (p. 7-4)

 Rotate to adjust the continuously-variable AGC cir-

cuit time constant.

• To use the [AGC] control, push the appropriate band’s
[AGC VR] (The [AGC VR] indicator lights white).

@4 AGC VOLUME KEY [AGC VR] (p. 7-4)

Push to toggle the [AGC] control ON or OFF. 

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

when switched ON.

• The [AGC VR] indicator above this key lights white

when the control is ON.

Hold down for 1 second to turn OFF the AGC 
function.

@5 AF CONTROL [AF] (p. 4-4)

Rotate to adjust the audio output level of the speak-

er or headphones.

@6 RF GAIN CONTROL [RF] (p. 4-4)

Rotate to adjust 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 FUNCTION KEYS [F-1]–[F-7]

Push to select the function indicated in the display

above these keys.

• Functions vary, depending on the operating mode.

@8 MODE KEYS

Selects the desired mode. (p. 4-10)

•

The Voice synthesizer announces the selected mode.

(p. 16-2)

 Push to alternately

select the USB or

LSB mode.

 Push to alternately select the CW or

CW-R (CW reverse) mode.

 Push to toggle between the RTTY and

PSK modes.

 Hold down for 1 second to toggle be-

tween the RTTY and RTTY-R (RTTY re-

verse)

modes.

 Hold down for 1 second to toggle be-

tween the PSK and PSK-R (PSK reverse)
modes.

 Push to alternately

select the

AM or FM

mode.

 Push to toggle between

the

SSB, AM, or
FM data (USB-D, LSB-D, AM-D, FM-D) and
voice modes.

 Hold down for 1 second to toggle be-

tween D1, D2, and D3.

@9 TRANSMIT INDICATOR [TX]

Lights red while transmitting.

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

operation.

Front panel (Continued) 

@8

@7

@4

@6

@3

@5

@9#0

1-5

1

PANEL DESCRIPTION

#0 MULTI-FUNCTION KEYS

Push to select the functions indicated in the display

to the right of these keys.

• Functions vary, depending on the operating mode.

 Push to select the ANT1, ANT2, ANT3 or

ANT4 antenna connector. (p. 13-2)

 Hold down for 1 second to display the

antenna selection memory. (p.13-5)

• When the receive antenna is activated, the

antenna that is connected to [ANT4] is used
only for receive.

When a transverter is used, this [ANT]

does not function and “TRV” appears.

 Push to select the RF power (Po), SWR,

ALC, COMP, Vd or Id metering while
transmitting. (p. 4-11)



Hold down for 1 second to turn the Digital
multi-function meter ON or OFF. (p. 4-11)

 Push to select one of two receive RF

preamps, or bypass them. (p. 7-2)

• “P.AMP1” activates a 10 dB preamp.

• “P.AMP2” activates a 16 dB high-gain pre-

amp.

 What is a preamp?

A 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.

 Push to select the 6 dB, 12 dB or 18 dB

attenuator. (p. 7-2)

 Hold down for 1 second to select the 3

dB, 6 dB, 9 dB, 12 dB, 18 dB, or 21 dB
attenuator. (p. 7-2)

 What is an attenuator?

An 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.

 Push to activate and then select the

“FAST,” “MID,” or “SLOW” AGC time con­stant. (p. 7-4)

• In the FM mode, only “FAST” is selectable.

 Hold down for 1 second to enter the AGC

set mode. (p. 7-4)

The AGC time constant can be set be-

tween 0.1 to 8.0 second (depending on the

mode)

, or turned OFF. When AGC is

“OFF,” the S-meter does not function.

 What is 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 or

OFF in the SSB mode. (p. 8-6)

 Selects the narrow, middle or wide com-

pression when held down for 1 second.

 What is a speech compressor?

A speech compressor compresses the transmitter au­dio input to increase the average audio output level,
and therefore increase the talk power. This function
is effective for long-distance communication, or when
propagation conditions are poor.

 Push to turn the 1⁄4-speed tuning func-

tion ON or OFF in the SSB data, CW,
RTTY and PSK modes. (p. 4-9)

•

1

⁄4 function sets the dial rotation to 1⁄4 of the

normal speed for fine tuning.

 In the FM mode, push to toggle between

the tone encoder, tone squelch function
and no-tone operation. (p. 5-39)

 In the FM mode, hold down for 1 second

to enter the Tone set mode. (pp. 5-38,

5-39)

 Push to turn the Voice squelch control

function ON or OFF. This is useful for
scanning. (p. 12-10)

1-6

1

PANEL DESCRIPTION

#1 SQUELCH CONTROL [SQL] (p. 4-4)
Rotate to adjust 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.

S-meter
squelch

Noise squelch

Squelch

is open.

Squelch

threshold

#2 NOISE BLANKER KEY [NB] (p. 7-11)

Push to turn the noise blanker ON or OFF. 

The noise blanker reduces pulse-type noise such

as that generated by automobile ignition systems.
This function cannot be used in the FM mode, or
for non-pulse-type noise.

• The [NB] indicator above this key lights white while

the function is activated.

Hold down for 1 second to enter the Noise blank- 
er set mode.

#3

NOISE REDUCTION KEY [NR]

(p. 7-12)

Push to turn the DSP noise reduction ON or OFF.

• The [NR] indicator above this key lights white when the

function is activated.

#4 NOISE REDUCTION LEVEL CONTROL [NR]

(p. 7-12)



Adjusts the DSP noise reduction level when the noise
reduction is in use. Set for maximum readability.

• To use this control, push the appropriate Main or Sub

band’s [NR].

#5 NOISE BLANKER CONTROL [NB] (p. 7-11)
 Adjust the noise blanker threshold level.

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

#6 LOCK INDICATOR [LOCK] (p. 4-12)

Lights when the dial lock function is activated.
#7 FUNCTION DISPLAY (p. 1-14)

Shows the operating frequency, function key menus,

Spectrum scope screen, Memory channel screen,
Set mode settings, and so on.

Front panel (Continued) 

$8 $6 $3$9%0

#6 #7$7#8 $1#9 $0 $2

$5 $4

#5

#3
#4

#2

#1

1-7

1

PANEL DESCRIPTION

#8

MINI SPECTRUM SCOPE KEY [M.SCOPE] (p. 6-2)

Push to t 

urn the Mini spectrum scope screen ON

or OFF.

• You can simultaneously display the Mini spectrum

scope screen with other screens, such as the Memo­ry or Set mode screens.

Hold down for 1 second to t 

urn ON the regular

spectrum scope screen.

#9 VOICE MEMORY RECORD KEY [REC]

Push to store the previous received signal for the 
preset time period. This function is called Instant
replay. (p. 9-7)

• The preset time period can be set in the Voice set

screen. (p. 9-13)



Hold down for 1 second to record a QSO (Com­munication) audio onto a memory device. (p. 9-3)

• Hold down again for 1 second to stop recording.

• The recorded memory device can be selected in the

Voice set screen. (p. 9-13)

$0 VOICE MEMORY PLAY BACK KEY [PLAY]

(pp. 9-2, 9-8)



Push to playback the last 5 seconds of the Instant
replay memory.

• The playback time can be changed in the Voice set

screen.

Hold down for 1 second to playback all of the in- 
stant replay memory.

• The recording time can be changed in the Voice set

screen.

$1 EXIT/SET KEY [EXIT/SET]

Push to exit, or return to the previous screen in- 
dication during Spectrum scope, Memory, Scan
or Set screen display.
Hold down for 1 second to display the  Set mode

menu screen. (p. 15-3)

$2 MAIN DIAL

Changes the displayed frequency (Main band), se-

lects set mode option, and so on.

$3

MAIN/SUB CHANGE KEY [CHANGE] (pp. 7-10, 8-7)

Push to toggle the frequency and selected memory

channel between the Main and Sub band readouts.

• When the split frequency function is ON, push to toggle

between the transmit frequency and the receive fre­quency.

$4 SUB BAND ACCESS KEY [SUB]

Push to select the Sub band readout.

• The Sub band readout frequency is clearly displayed.

$5 MAIN BAND ACCESS KEY [MAIN]

Push to select the Main band readout.

• The Main band readout frequency is clearly displayed.

The Sub band readout functions only during split opera­tion or Dualwatch.

$6 MAIN/SUB EQUALIZING KEY [M=S] (p. 8-7)

Hold down for 1 second to equalize the Sub band

readout frequency to the Main band readout fre­quency.

$7 MEMORY CHANNEL UP/DOWN KEYS [p]/[q]

(p. 11-2)

Push to select the desired memory channel.

• Memory channels can be selected both in the VFO and

the memory modes.

$8 TRANSMIT FREQUENCY CHECK KEY [XFC]

(p. 6-5)

Hold down to monitor the transmit frequency (includ-

ing ∂TX frequency offset)

during split frequency op-

eration.

• While holding down, the transmit frequency can be

changed with [MAIN DIAL], keypad, memo pad or [Y]/
[Z] keys.

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

cancel the Dial lock function. (pp. 8-7, 8-8)

$9 RECEIVE INDICATOR [RX]

Lights green while receiving a signal and when the

squelch is open.

%0 SPLIT OPERATION INDICATOR [SPLIT] (p. 8-7)

Lights white during split frequency operation.

1-8

1

PANEL DESCRIPTION

%1 AUTOMATIC TUNING KEY [AUTO TUNE]

Push to turn ON the Automatic tuning function in the

CW or AM mode.

IMPORTANT!

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

%2 SUB DIAL

Changes the displayed frequency in the Sub band.

%3 SPEECH KEY [SPEECH] (p. 16-2)

Push to announce the S-meter level and the se- 
lected operating frequency.

• You can change the speech language, speech speed,

and speech contents in the Others set screen.

(p. 15-14)

Hold down for 1 second to announce the select- 
ed operating mode.

%4 SPLIT KEY [SPLIT] (pp. 8-7, 8-8)

Push to turn the split function ON or OFF. 
Hold down for 1 second to turn the split func- 
tion ON and equalize the Sub band frequency to
the Main band in non-FM modes, and then sets
the Sub band readout for frequency input mode.

(Quick split function)

• In the FM mode, the Sub band frequency is shifted

by the preset frequency offset from the Main band
readout frequency. (p. 15-14)

• The quick split function can be turned OFF in the Oth­ers set screen. (p. 15-13)

After entering a frequency offset, push to turn 
ON the split function. The Sub band frequency
is shifted the offset amount from the Main band
frequency.

%5 DUALWATCH KEY [DUALWATCH] (p. 7-10)

Push to turn the Dualwatch function ON or OFF. 
Hold down for 1 second to turn the Dualwatch 
function ON, and equalize the Main/Sub band
frequency to the Sub/Main band. (Quick dual­watch function)

• The Quick Dualwatch function can be turned OFF in

the Others set screen. (p. 15-13)

Front panel (Continued) 

^4%9^3 ^2

^0

^1

%4

%5

%6

%8
%7

%3

%1 %2

1-9

1

PANEL DESCRIPTION

%6 NOTCH KEY [NOTCH]

(p. 7-13)
Push to select the Notch function between auto, 
manual, or OFF in the SSB or AM mode.
Push to turn the Manual notch function ON or 
OFF in the CW, RTTY, or PSK mode.
Push to turn the Auto notch function ON or OFF 
in the FM mode.

• “

MN

” is displayed when the Manual notch filter is in

use.

• “

AN

” is displayed when the Auto notch filter is in

use.

Hold down for 1 second to select the Manual 
notch width from wide, mid, or narrow.

 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.

%7 AUDIO PEAK FILTER/TWIN PEAK FILTER KEY

[APF/TPF]

During CW mode operation (p. 5-6)

Push to turn the Audio peak filter ON or OFF. 

• “

APF

” appears when audio peak filter is in use.

Hold down for 1 second to select the APF pass- 
band width from WIDE, MID, or NAR or from 320,
160, or 80 Hz, depending on the APF type set­ting.

During RTTY mode operation (p. 5-15)

Push to turn the Twin peak filter ON or OFF. 

• “

TPF

” appears when twin peak filter is in use.

%8 PBT CLEAR KEY [PBT CLEAR] (p. 7-5)
Hold down for 1 second to clear the PBT settings.

• The [PBT CLEAR] indicator above this key lights when

the PBT function is in use.

%9 FILTER KEY [FILTER] (p. 7-6)

Push to select one of three IF filter settings. 
Hold down for 1 second to enter the Filter 
screen.

^0 MEMORY WRITE KEY [MW] (p. 11-4)
Hold down for 1 second to store the selected fre-

quency and operating mode into the displayed
memory channel.

• This function is usable in both the VFO and memory

modes.

^1 KEYPAD

Push to select the operating band. 

• Push [GENE] to select the general coverage band.

Push the same key 2 or 3 times to call up other 
stacked frequencies in the band. (p. 4-6)

• Icom’s triple band stacking register memorizes 3 fre­quencies in each band.

After pushing [F-INP], push to enter a frequency 
or memory channel. Pushing [ENT] or [p]/[q] to
save and exit. (pp. 4-9, 11-2)

• Example: To enter 14.195 MHz, push [F-INP] [1] [4]
[•] [1] [9] [5] [ENT].

^2 VFO/MEMORY KEY [V/M]

Push to toggle the selected operating mode be- 

tween the VFO and memory. (pp. 4-5, 11-2)

Hold down for 1 second to copy the memory con- 

tents to the VFO. (p. 11-5)

^3 MEMO PAD-WRITE KEY [MP-W] (p. 11-7)
Enters the selected frequency and operating mode

into a memo pad.

• The ve most recent entries remain in the memo pads.

• The number of memo pads can be expanded from 5 to

10 in the Others set screen. (p. 15-15)

^4 MEMO PAD-READ KEY [MP-R] (p. 11-8)

Push to call up a frequency and operating mode 
in a memo pad.

The 5 (or 10) most recently entered frequencies

and operating modes can be recalled, starting
from the most recent.

• The number of memo pads can be expanded from 5

to 10 in Others set screen. (p. 15-15)

Hold down for 1 second to enter the Memo pad 
list screen.

1-10

1

PANEL DESCRIPTION

^5 LOCK KEY [LOCK] (p. 4-12)

Push to turn the Dial lock function ON or OFF.

^6 QUICK TUNING KEY [TS]



Push to turn the Quick Tuning step function ON or

OFF. (p. 4-7)

• While the Quick Tuning icon, “Z,” is displayed above
the frequency readout, the frequency can be changed
in selected kHz steps.

• 0.1, 1, 5, 9, 10, 12.5, 20 and 25 kHz steps can be

independently set for each operating mode.

When the Quick tuning step is OFF, hold down 
for 1 second to turn the 1 Hz tuning step ON or
OFF. (p. 4-8)


When the Quick Tuning step is ON, hold down
for 1 second to enter the Quick Tuning step set

screen. (p. 4-7)

^7 CLEAR KEY [CLEAR] (pp. 7-3, 8-5)
You can clear the RIT/∂TX shift frequency by hold-

ing down for 1 second or pushing, depending on the
quick RIT/∂TX clear function setting (p. ?12-18).

^8 ∂TX KEY [∂TX] (p. 8-5)

Push to turn the  ∂TX function ON or OFF.

• Rotate the [RIT/∂TX] control to vary the ∂TX fre-
quency.

Hold down for 1 second to add the  ∂TX shift fre-
quency to the operating frequency.

 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, and so on.

^9 RIT KEY [RIT] (p. 7-3)

Push to turn the RIT function ON or OFF. 

• Rotate the [RIT/∂TX] control to vary the RIT frequen-
cy.

Hold down for 1 second to add the RIT shift fre- 
quency to the operating frequency.

 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
different-sounding voice characteristics, and so on.

&0 CW PITCH CONTROL [CW PITCH] (p. 5-6)

Shifts the received CW audio pitch and the CW side

tone pitch without changing the operating frequency.

&1 MANUAL NOTCH FILTER CONTROL [NOTCH]

(p. 7-13)

Varies the “valley” frequency of the manual notch

filter to reject an interfering signal while the manual
notch function is ON.

• Notch lter center frequency:

SSB : –1060 Hz ~ 4040 Hz
CW : CW pitch frequency + 2540 Hz ~ CW pitch

frequency –2540 Hz

AM : –5100 Hz ~ 5100 Hz

&2 DIGITAL RF SELECTOR CONTROL [DIGI-SEL]

(p. 7-12)

Adjusts the digital RF selector center frequency.

• The control can be reassigned as the Audio peak lter

adjustment (p. 15-15)

Front panel (Continued) 

&5 &4

&2

&3

&1

&0

^7

^8

^9

^6

^5

1-11

1

PANEL DESCRIPTION

&3 DIGITAL RF SELECTOR KEY [DIGI-SEL]

(p. 7-12)

Push to turn the digital RF preselector ON or OFF.

• The [DIGI-SEL] indicator lights white when the preselec­tor is in use.

&4 PASSBAND TUNING CONTROLS [TWIN PBT]

(p. 7-5)

Adjusts the receiver’s IF filter ‘passband width’ using

the DSP.

• The passband width and shift frequency are displayed in

the Multi-function display.

•

Hold down [PBT CLEAR] for 1 second to clear the PBT
settings.

• The adjustment range is half of the selected lter pass­band width, and the value is adjustable in 25 Hz steps
for the SSB/CW/RTTY/PSK modes, and 100 Hz steps
for the AM mode.

PBT2

PBT1

Low cutHigh cut Center

–+

 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.

&5 RIT/∂TX CONTROL [RIT/∂TX] (pp. 7-3, 8-5)
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).

1-12

1

PANEL DESCRIPTION

q ANTENNA CONNECTOR [ANT 1–4] (p. 3-4)

Connects to a 50 Ω antenna with a PL-259 plug

connector.

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

Connect this terminal to ground to prevent electrical

shocks, TVI, BCI and other problems.

e CIRCUIT BREAKER

Cuts off the AC input if excessive current flows.

r EXTERNAL DISPLAY TERMINAL [EXT-DISPLAY]

(p. 3-6)

Connects to an external display monitor.

• At least 800×600 pixel display is necessary.

t USB (Universal Serial Bus) PORT [USB A]

Insert a USB flash drive* for both reading and 
storing a wide variety of the transceiver’s infor­mation and data.

• The indicator lights or blinks when the transceiver

reads or writes to the memory data.

• An unmount operation should be performed before

removing the USB flash drive*.

Connects to a PC keyboard for RTTY and PSK 
operations.

• USB keyboards* are supported.

*: A USB flash drive or USB keyboard is not supplied

by Icom.

About the [USB A] connector:

• Supports only a USB ash drive, keyboard, mouse

or hub.

• Turn the transceiver power OFF when connecting

or disconnecting a USB keyboard, mouse or hub.

• DO NOT connect the following devices:

- Two or more of the same kind of USB devices.
(Example: Two USB hubs or two USB mice)

- A Multimedia adapter

- A USB HDD

- A USB flash drive larger than 32 GB

- A Bluetooth® keyboard or mouse.

y S/P DIF INPUT TERMINAL [S/P DIF– IN]
u S/P DIF OUTPUT TERMINAL [S/P DIF– OUT]

Connects to external equipment that supports S/P

DIF input/output.

i ETHERNET CONNECTOR [LAN] (p. 3-6)

Connects to a PC network through a LAN (Local

Area Network).

o MAIN POWER KEY [I/O] (p. 4-3)

Turns the internal power supply ON or OFF.

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

Connects the supplied AC power cable to an AC re-

ceptacle.

!1

EXTERNAL SPEAKER JACK MAIN [EXT-SP A]

(p. 3-5)

!2

EXTERNAL SPEAKER JACK SUB [EXT-SP B]

(p. 3-5)

Connects to an external speaker (4–8 Ω), if de-

sired.

L

B

q

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

r t y u i

o

!0

w e



Rear panel

1-13

1

PANEL DESCRIPTION

!3

USB PORT [USB B]

USB B type port connects to a PC.

• A USB A-USB B cable is required.

!4 ACCESSORY SOCKET [A ACC1]
ACCESSORY SOCKET [A ACC2]
ACCESSORY SOCKET [B ACC1]
ACCESSORY SOCKET [B ACC2]

Connects to external equipment such as a linear

amplifier, an automatic antenna selector/tuner, a
TNC for data communications, and so on.

• See page 20-2 for detailed socket information.

!5 DC OUTPUT JACK [DC OUT] (p. 20-5)

Outputs regulated 14 V DC (approximately) for ex-

ternal equipment. Connected in parallel with 13.8 V

outputs of [ACC 1] and [ACC 2]. (maximum 1 A in
total)

+

_

_

!6 T/R CONTROL JACK [RELAY] (pp. 3-5, 20-4)

Goes to ground when transmitting to control an ex-

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

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).

!7 ALC INPUT JACK [ALC] (p. 3-5)

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

ear amplifier.

!8 ALC LEVEL ADJUSTMENT POT [ALC ADJ]

Rotate to adjust the ALC levels.
No adjustment is required when the ALC output lev-

el of the connected non-Icom linear amplifier is 0 to

–4 V DC.

!9 STRAIGHT KEY JACK [KEY] (p. 20-3)
Connects to 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 the Keyer set screen. (p. 5-13)

+

_

@0 EXTERNAL KEYPAD JACK [EXT KEYPAD]

(p. 20-4)

Connects to an external keypad for direct voice

memory (p. 9-11), memory keyer (p. 5-10), RTTY
memory (p. 5-17) or PSK memory (p. 5-29) trans­mission.

A transceiver mute control line (both transmit and

receive) is also supported.

@1 METER JACK [METER] (p. 20-5)

Outputs the received signal strength, transmit out-

put power, VSWR, ALC, speech compression, V

d or

Id levels for an external meter.

@2 CI-V REMOTE CONTROL JACK [REMOTE]

(p. 20-5)

Connects to a PC through the optional CT-17 

c i -v

l e v e l c o n v e r t e r for external control of the trans-

ceiver.
Used for transceive operation with another Icom 

CI-V transceiver or receiver.

@3 RECEIVE ANTENNA A OUT [RX ANT A– OUT]
@4 RECEIVE ANTENNA A IN [RX ANT A– IN]

Located between the transmit/receive switching cir-

cuit and the receiver’s RF stage in the Sub band
(Main band in the split frequency mode).

Connects to an external unit, such as preamplifier
or RF filter, using BNC connectors, if desired.

When no external unit is connected, [RX ANT A–
IN] and [RX ANT A– OUT] must be deactivated
and internally shorted by the switching relay. This
setting is available in the ANT screen. (p. 13-6)

@5 TRANSVERTER CONNECTOR [X-VERTER]

(p. 20-4)

Connects to an external transverter for input/out-

put.

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

when the transverter function is in use. (pp. 20-2,

15-14)

@6 RECEIVE ANTENNA B OUT [RX ANT B– OUT]
@7 RECEIVE ANTENNA B IN [RX ANT B– IN]

Located between the transmit/receive switching cir-

cuit and receiver’s RF stage in the 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 B–
IN] and [RX ANT B– OUT] must be deactivated
and internally shorted by the switching relay. This
setting is available in the ANT screen. (p. 13-6)

@8 REFERENCE SIGNAL INPUT/OUTPUT

TERMINAL [REF I/O]

Input or output for a 10 MHz reference signal.

1-14

1

PANEL DESCRIPTION

q BAND WIDTH INDICATOR (p. 7-5)
Displays the passband width of the IF filter.

w MODE INDICATOR
Displays the selected mode.

e SHIFT FREQUENCY INDICATOR (p. 7-5)
Displays the shift frequency of the IF filter.

r PASSBAND WIDTH INDICATOR (p. 7-5)
Graphically displays the passband width for twin

PBT operation and the center frequency for IF shift
operation.

t QUICK TUNING INDICATOR (p. 4-7)

Appears when the Quick Tuning step function is ON.

y BANDPASS FILTER INDICATOR
Appears when the narrow filter (500 Hz or less) is

selected in the CW, RTTY, or PSK mode.

u RTTY TUNING INDICATOR
Displays the tuning level in the RTTY mode.

i CLOCK READOUT
Displays the current time.

o FREQUENCY READOUTS
Displays the operating frequency.

• Gray characters are used for a non-active frequency.

!0 IF FILTER INDICATOR
Displays the selected IF filter number.

!1 VFO/MEMORY CHANNEL INDICATOR (p. 4-5)

Indicates the VFO mode or selected memory chan-

nel number.

!2 TX ICON

“ 

TX

” appears while transmitting.

Indicates the frequency used for transmit. 

• Displays on the Sub readout when the split function

is turned ON.

• A TX icon with doted rectangle, “

TX

” is displayed,

instead of the regular “

TX

” TX icon, when a fre­quency outside of an amateur band frequency range
is selected. This function can be turned OFF in the

Others set screen, if desired. (p. 4-5)

!3 S/RF METER (p. 4-11)
Displays the signal strength while receiving. Dis-

plays the relative output power, SWR, ALC or com­pression levels while transmitting.



Display

qw wt

!3

!2

o

!1

!0

e er ry yu uiq

t