ICOM orporated 300900 HF/50 MHz Transceiver User Manual IC 7700 ENG
ICOM Incorporated HF/50 MHz Transceiver IC 7700 ENG
Contents
- 1. User Manual Part 1
- 2. User Manual Part 2
User Manual Part 1
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| Document ID | 900712 |
| Application ID | NJMt8FR64LbENQ+6+PFjYQ== |
| Document Description | User Manual Part 1 |
| Short Term Confidential | No |
| Permanent Confidential | No |
| Supercede | No |
| Document Type | User Manual |
| Display Format | Adobe Acrobat PDF - pdf |
| Filesize | 213.45kB (2668067 bits) |
| Date Submitted | 2008-02-11 00:00:00 |
| Date Available | 2008-02-11 00:00:00 |
| Creation Date | 2008-02-11 09:19:59 |
| Producing Software | Acrobat Distiller 8.1.0 (Windows) |
| Document Lastmod | 2008-02-11 09:22:13 |
| Document Title | IC-7700_ENG |
| Document Creator | QuarkXPress Passport. 4.1: PSPrinter 8.3.2J |
| Document Author: | Icom Inc. |
HF/50 MHz TRANSCEIVER
i7700
Instruction Manual
A-6612H-1EX
Printed in Japan
© 2007 Icom Inc.
FOREWORD
Thank you for making the IC-7700 your radio of choice. We hope you agree
with Icom’s philosophy of “technology first.” Many hours of research and
development went into the design of your IC-7700.
D FEATURES
❍ Ultimate receiver performance: third-order intercept (IP3)
of +40 dBm (HF bands only)
❍ Built-in Baudot RTTY and PSK31 modulator/demodulator
and direct PC keyboard connection capability for RTTY
and PSK31 operation without a PC
❍ High resolution spectrum scope— center frequency and
fixed frequency modes, plus mini-scope displays
IMPORTANT
READ THIS INSTRUCTION MANUAL CAREFULLY before attempting to operate the transceiver.
SAVE THIS INSTRUCTION MANUAL. This manual contains important safety and operating instructions for the IC-7700.
EXPLICIT DEFINITIONS
WORD
DEFINITION
R WARNING
Personal injury, fire hazard or electric shock may
occur.
CAUTION
Equipment damage may occur.
If disregarded, inconvenience only. No risk of personal injury, fire or electric shock.
NOTE
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.
PRECAUTIONS
R WARNING HIGH RF VOLTAGE! NEVER
R CAUTION! The transceiver weighs approx. 22.5
attach an antenna or internal antenna connector during
transmission. This may result in an electrical shock or
burn.
kg (50 lb). Always have two people available to carry,
lift or turn over the transceiver.
R CAUTION! The line-voltage receptacle must be
R WARNING! NEVER operate the transceiver
near the transceiver and must be easily accessible.
Avoid extension cords.
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.
DO NOT use chemical agents such as benzine or alcohol when cleaning the IC-7700, as they can damage
the transceiver’s surfaces.
R WARNING! Immediately turn the transceiver
DO NOT push the PTT switch when you don’t actu-
power OFF and remove the power cable if it emits an
abnormal odor, sound or smoke. Contact your Icom
dealer or distributor for advice.
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).
R CAUTION! NEVER put the transceiver in any
unstable place (such as on a slanted surface or vibrated place). This may cause injuly and/or damage to
the transceiver.
AVOID placing the transceiver in excessively dusty environments or in direct sunlight.
R 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.
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.
R CAUTION! NEVER change the internal settings of the transceiver. This may reduce transceiver
performance and/or damage to the transceiver.
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.
In particular, incorrect settings for transmitter circuits,
such as output power, idling current, etc., might damage the expensive final devices.
Use Icom microphones only (supplied or optional).
Other manufacturers’ microphones have different pin
assignments, and connection to the IC-7700 may damage the transceiver or microphone.
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.
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.
R CAUTION! 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.
During maritime mobile operation, keep the transceiver
and microphone as far away as possible from the magnetic navigation compass to prevent erroneous indications.
R CAUTION! NEVER block any cooling vents on
the top, rear or bottom of the transceiver.
R CAUTION! NEVER expose the transceiver to
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.
rain, snow or any liquids.
R CAUTION! NEVER install the transceiver in a
place without adequate ventilation. Heat dissipation
may be reduced, and the transceiver may be damaged.
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.
R CAUTION! NEVER operate or touch the transceiver with wet hands. This may result in an electric
shock or damage to the transceiver.
ii
SUPPLIED ACCESSORIES
!0
!1
!2
!3
!4
!5
q AC power cable* ………………………………… 1
w Feet …………………………………………… 1 pair
e Spare fuse (FGB 2 A) …………………………… 1
r RCA plugs ………………………………………… 2
t DC plug …………………………………………… 1
y 2-conductor 1⁄8w plugs …………………………… 3
u 3-conductor 1⁄8w plugs …………………………… 2
i 3-conductor 1⁄4w plugs …………………………… 3
o ACC plugs (7-pin) ………………………………… 1
!0 ACC plugs (8-pin) ………………………………… 1
!1 Antenna connector caps ………………………… 4
!2 Side screws (without rack mounting handle)† … 6
!3 Main dial‡ …………………………………………… 1
!4 Rubber cover for Main dial‡ ……………………… 1
!5 Main dial screw and hexagonal wrench‡ …… 1 set
*May differ from that shown according to version.
†
These screw are used when removing rack mounting handles. See p.2-3 for rack mounting handle detachment details.
‡
See p.2-2 for main dial attachment details.
iii
TABLE OF CONTENTS
Section 1
PANEL DESCRIPTION
■ Front panel ……………………………………………………………… 1-2
■ Rear panel ……………………………………………………………… 1-12
■ LCD display …………………………………………………………… 1-14
■ Screen menu arrangement …………………………………………… 1-16
Section 2
INSTALLATION AND CONNECTIONS
■ Unpacking ……………………………………………………………… 2-2
■ Main dial attachment …………………………………………………… 2-2
■ Rack mounting handle detachment …………………………………… 2-3
■ Selecting a location …………………………………………………… 2-3
■ Grounding ……………………………………………………………… 2-4
■ Antenna connection …………………………………………………… 2-4
■ USB-Memory connection ……………………………………………… 2-4
■ Required connections ………………………………………………… 2-5
D Front panel …………………………………………………………… 2-5
D Rear panel …………………………………………………………… 2-5
■ Advanced connections ………………………………………………… 2-6
D Front panel …………………………………………………………… 2-6
D Rear panel—1 ……………………………………………………… 2-6
D Rear panel—2 ……………………………………………………… 2-7
■ Linear amplifier connections …………………………………………… 2-8
D Connecting the IC-PW1/EURO …………………………………… 2-8
D Connecting a non-Icom linear amplifier …………………………… 2-8
■ Transverter jack information …………………………………………… 2-9
■ FSK and AFSK (SSTV) connections ………………………………… 2-9
■ Microphone connector information ………………………………… 2-10
■ Microphones (options) ………………………………………………… 2-10
D SM-20 ……………………………………………………………… 2-10
D HM-36 ……………………………………………………………… 2-10
■ Accessory connector information …………………………………… 2-11
Section 3
BASIC OPERATIONS
■ When first applying power (CPU resetting) …………………………
■ Initial settings ……………………………………………………………
■ Selecting VFO/memory mode …………………………………………
■ VFO selection ……………………………………………………………
D Selecting VFO-A/VFO-B ……………………………………………
D VFO equalization ……………………………………………………
■ Selecting an operating band ……………………………………………
D Using the band stacking registers …………………………………
■ Frequency setting ………………………………………………………
D Tuning with the main dial ……………………………………………
D Direct frequency entry with the keypad ……………………………
D Quick tuning step ……………………………………………………
D Selecting “kHz” step …………………………………………………
D 1⁄4 tuning step function ………………………………………………
D Selecting 1 Hz step …………………………………………………
D Auto tuning step function ……………………………………………
D Band edge warning beep ……………………………………………
■ Operating mode selection ………………………………………………
■ Volume setting …………………………………………………………
■ RF gain adjustment ……………………………………………………
■ Squelch level adjustment ………………………………………………
iv
3-2
3-2
3-3
3-3
3-3
3-3
3-4
3-4
3-5
3-5
3-5
3-6
3-6
3-6
3-7
3-7
3-7
3-8
3-9
3-9
3-9
TABLE OF CONTENTS
■ Meter indication selection …………………………………………… 3-10
D Multi-function digital meter ………………………………………… 3-10
D Meter type selection ……………………………………………… 3-11
■ Voice synthesizer operation ………………………………………… 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
■ Electronic keyer functions ……………………………………………… 4-7
D Memory keyer screen …………………………………………………4-8
D Editing a memory keyer ………………………………………………4-9
D Contest number set mode …………………………………………4-10
D Keyer set mode ………………………………………………………4-11
■ Operating RTTY (FSK) ……………………………………………… 4-13
D Convenient functions for receive …………………………………4-14
D About RTTY reverse mode …………………………………………4-14
D Twin peak filter ………………………………………………………4-14
D Functions for the RTTY decoder indication ………………………4-15
D Setting the decoder threshold level ………………………………4-15
D RTTY memory transmission ………………………………………4-16
D Automatic transmission/reception setting …………………………4-16
D Editing RTTY memory ………………………………………………4-17
D RTTY decode set mode ……………………………………………4-18
D Data saving …………………………………………………………4-20
■ Operating PSK ………………………………………………………… 4-21
D Convenient functions for receive …………………………………4-22
D About BPSK and QPSK modes ……………………………………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
TABLE OF CONTENTS
■ Repeater operation …………………………………………………… 4-32
D Repeater tone frequency setting …………………………………4-33
■ Tone squelch operation ……………………………………………… 4-34
■ Data mode (AFSK) operation ………………………………………… 4-35
Section 5
FUNCTIONS FOR RECEIVE
■ Spectrum scope screen ……………………………………………… 5-2
D Center mode ………………………………………………………… 5-2
D Fixed 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
D DSP filter shape …………………………………………………… 5-14
D Filter shape set mode ……………………………………………… 5-14
■ Noise blanker ………………………………………………………… 5-16
D NB set mode ………………………………………………………… 5-16
■ Noise reduction ………………………………………………………… 5-17
■ Dial lock function ……………………………………………………… 5-17
■ Notch function ………………………………………………………… 5-18
■ Digital selector ………………………………………………………… 5-18
■ Autotune function ……………………………………………………… 5-19
Section 6
FUNCTIONS FOR TRANSMIT
■ VOX function ……………………………………………………………
D Using the VOX function ……………………………………………
D Adjusting the VOX function …………………………………………
D VOX set mode ………………………………………………………
■ Break-in function …………………………………………………………
D Semi break-in operation ……………………………………………
D Full break-in operation ………………………………………………
■ ∂TX function ……………………………………………………………
D ∂TX monitor function …………………………………………………
■ Monitor function …………………………………………………………
■ Transmit filter width setting (SSB only) ………………………………
■ Speech compressor (SSB only) ………………………………………
■ Split frequency operation ………………………………………………
■ Quick split function ………………………………………………………
D Split lock function ……………………………………………………
vi
6-2
6-2
6-2
6-2
6-3
6-3
6-3
6-4
6-4
6-4
6-5
6-5
6-6
6-7
6-7
TABLE OF CONTENTS
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 USB-Memory …………………… 7-10
D Saving the received audio memory ……………………………… 7-10
D Saving the TX memory …………………………………………… 7-10
Section 8
MEMORY OPERATION
■ Memory channels ………………………………………………………
■ Memory channel selection ……………………………………………
D Using the ∫ / √ keys …………………………………………
D Using the keypad ……………………………………………………
■ Memory channel programming ………………………………………
D Programming in VFO mode …………………………………………
D Programming in memory mode ……………………………………
■ Frequency transferring …………………………………………………
D Transferring in VFO mode …………………………………………
D Transferring in memory mode ………………………………………
■ Memory list screen ………………………………………………………
D Selecting a memory channel using the memory list screen ……
D Confirming programmed memory channels ………………………
■ Memory names …………………………………………………………
D Editing (programming) memory names ……………………………
■ Memory clearing …………………………………………………………
■ Memo pads ………………………………………………………………
D Writing frequencies and operating modes into memo pads ……
D Calling up a frequency from a memo pad …………………………
Section 9
SCANS
■
■
■
■
■
■
■
■
■
Scan types ………………………………………………………………
Preparation ………………………………………………………………
Voice squelch control function …………………………………………
Scan set mode …………………………………………………………
Programmed scan operation …………………………………………
∂F scan operation ………………………………………………………
Fine programmed scan/Fine ∂F scan ………………………………
Memory scan operation …………………………………………………
Select memory scan operation ………………………………………
vii
8-2
8-2
8-2
8-2
8-3
8-3
8-3
8-4
8-4
8-4
8-5
8-5
8-5
8-6
8-6
8-6
8-7
8-7
8-7
9-2
9-2
9-3
9-3
9-4
9-4
9-5
9-6
9-6
TABLE OF CONTENTS
■ Setting select memory channels ………………………………………
D Setting in scan screen ………………………………………………
D Setting in memory list screen ………………………………………
D Erasing the select scan setting ……………………………………
■ Tone scan ………………………………………………………………
9-7
9-7
9-7
9-7
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
D Receive antenna I/O setting ……………………………………… 10-5
■ Antenna tuner operation ……………………………………………… 10-6
D Tuner operation …………………………………………………… 10-6
D If the tuner cannot tune the antenna …………………………… 10-7
Section 11
CLOCK AND TIMERS
■ Time set mode …………………………………………………………
■ Daily timer setting ………………………………………………………
■ Setting sleep timer ……………………………………………………
■ Timer operation …………………………………………………………
Section 12
SET MODE
Section 13
MAINTENANCE
■ Troubleshooting ………………………………………………………
D Transceiver power …………………………………………………
D Transmit and receive ………………………………………………
D Scanning ……………………………………………………………
D Display ………………………………………………………………
D Format USB-Memory ………………………………………………
■ Main dial brake adjustment …………………………………………
■ SWR reading ……………………………………………………………
■ Screen type and font selections ……………………………………
■ Frequency calibration (approximate) ………………………………
■ Opening the transceiver’s case ………………………………………
■ Clock backup battery replacement …………………………………
11-2
11-3
11-4
11-4
■ Set mode description ………………………………………………… 12-2
D Set mode operation ………………………………………………… 12-2
D Screen arrangement ……………………………………………… 12-3
■ Level set mode ………………………………………………………… 12-4
■ ACC set mode ………………………………………………………… 12-7
■ Display set mode ……………………………………………………… 12-9
■ Others set mode …………………………………………………… 12-12
■ USB-Memory set menu …………………………………………… 12-19
D USB-Memory set screen arrangement ………………………… 12-19
D Save option set mode …………………………………………… 12-20
D Load option set mode …………………………………………… 12-21
■ File saving …………………………………………………………… 12-22
■ File loading …………………………………………………………… 12-23
■ Changing a file name ……………………………………………… 12-24
■ Deleting a file ………………………………………………………… 12-25
■ Unmounting USB-Memory ………………………………………… 12-25
■ Formatting the USB-Memory ……………………………………… 12-26
viii
13-2
13-2
13-2
13-3
13-3
13-3
13-3
13-4
13-4
13-5
13-6
13-6
TABLE OF CONTENTS
■
■
■
■
Fuse replacement ……………………………………………………
Resetting the CPU ……………………………………………………
About protection indications …………………………………………
Screen saver function …………………………………………………
13-7
13-7
13-8
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 …………………………………………………… 14-3
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 CLOCK2 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 …………………………………………………………
D General ………………………………………………………………
D Transmitter …………………………………………………………
D Receiver ……………………………………………………………
D Antenna tuner ………………………………………………………
■ Options …………………………………………………………………
15-2
15-2
15-2
15-3
15-3
15-4
UPDATING THE FIRMWARE
■ General …………………………………………………………………
■ Caution …………………………………………………………………
■ Preparation ……………………………………………………………
D Firmware and firm utility ……………………………………………
D File downloading ……………………………………………………
■ Firmware update— USB-Memory ……………………………………
■ Firmware update— PC ………………………………………………
D Connections …………………………………………………………
D IP address setting …………………………………………………
D Updating from the PC ………………………………………………
16-2
16-2
16-3
16-3
16-3
16-4
16-6
16-6
16-7
16-8
Section 16
ix
PANEL DESCRIPTION
■
■
■
■
Section
Front panel ……………………………………………………………… 1-2
Rear panel ……………………………………………………………… 1-12
LCD display …………………………………………………………… 1-14
Screen menu arrangement …………………………………………… 1-16
1-1
1
PANEL DESCRIPTION
■ Front panel
i o !0 !1 !2 !3 !4
TX
RX
SPLIT
LOCK
1.8
POWER
10
TRANSMIT
VOX
MIC
BK-IN
RF PWR
MONITOR
KEY SPEED
21
DELAY
GENE
3.5
14
24
50
TUNER
MP
TIMER
AGC
SQL
NR
NB
PHONES
XFC
ELEC-KEY
AGC VR
NR
AF
MIC
NB
RF
F-1
F-2
F-3
F-4
F-5
F-6
F-7
SSB
CW
RTTY/PSK
AM/FM
DATA
M.SCOPE
EXIT/SET
REC
DRIVE
!5
COMP
MONI GAIN
VOX GAIN
ANTI VOX
CONTRAST
BRIGHT
AUTO
TUNE
PLAY
VOICE MEMORY
!6
q POWER SWITCH POWER (p. 3-2)
r TIMER SWITCH TIMER (p. 11-4)
➥ Turns the sleep or daily timer function ON and
OFF.
Turn the internal power supply ON in first. The internal power supply switch is located on the rear
panel. (p. 3-2)
• The [TIMER] indicator above this switch lights green
when the timer is in use.
➥ Enters timer set mode when pushed and held for
1 sec.
➥ Push to turn the transceiver power ON.
• The [POWER] indicator above this switch lights green
when powered ON.
t HEADPHONE JACK [PHONES]
Accepts standard stereo headphones.
➥ Push and hold for 1 sec. to turn the transceiver
power OFF.
• Output power: 5 mW with an 8 load.
• When headphones are connected, the internal speaker
or connected external speaker does not function.
• The [POWER] indicator lights orange when the transceiver is OFF when the internal power supply is
switched ON.
y ELECTRONIC KEYER JACK [ELEC-KEY] (p. 2-5)
Accepts a paddle to activate the internal electronic
keyer for CW operation.
w TRANSMIT SWITCH TRANSMIT
Selects transmit or receive.
• The [TX] indicator lights red while transmitting and the
[RX] indicator lights green when the squelch is open.
• 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 [CW
KEY] on p. 1-12.
• 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)
e ANTENNA TUNER SWITCH TUNER (p. 10-6)
➥ 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
and held for 1 sec.
(dot)
(com)
(dash)
• The [TUNER] indicator blinks red during manual tuning.
• When the tuner cannot tune the antenna, the tuning
circuit is bypassed automatically after 20 sec.
1-2
PANEL DESCRIPTION
u MICROPHONE CONNECTOR [MIC]
Accepts an optional microphone.
!2 ELECTRONIC CW KEYER SPEED CONTROL
[KEY SPEED] (p. 4-4)
Adjusts the internal electronic CW keyer’s speed.
• See p. 15-4 for appropriate microphones.
• See p. 2-10 for microphone connector information.
• 6 wpm (min.) to 48 wpm (max.) is the available range.
i MIC GAIN CONTROL [MIC] (p. 3-12)
Adjusts microphone input gain.
Max.
48 wpm
• The transmit audio tone in SSB, AM and FM modes can
be adjusted independently in set mode. (p. 12-5)
Min.
6 wpm
✔ How to set the microphone gain.
Set the [MIC] control so that the ALC meter occasionally
moves up-scale during normal voice transmission in SSB,
AM or FM mode.
!3 MONITOR SWITCH MONITOR (p. 6-4)
Monitors your transmitted IF signal.
• The CW sidetone functions regardless of MONITOR
switch setting in CW mode.
• The [MONITOR] indicator above this switch lights green
while the function is activated.
Recommended level for
an Icom microphone
Increases
Decreases
Decreases
!4 BREAK-IN DELAY CONTROL [DELAY] (p. 6-3)
Adjusts the transmit-to-receive switching delay time
for CW semi-break-in operations.
Increases
o VOX SWITCH VOX
➥ Push to turn the VOX function ON and OFF during SSB, AM and FM mode operation. (p. 6-2)
➥ Push and hold for 1 sec. to enter VOX set mode.
(p. 6-2)
Long delay for
slow speed keying
Short delay for
high speed keying
✔ What is the VOX function?
!5 AGC CONTROL [AGC] (p. 5-11)
Adjusts the continuously-variable AGC circuit time
constant.
The VOX function (voice operated transmission) activates
transmission without pushing the transmit switch or PTT
switch when you speak into the microphone; then automatically returns to receive when you stop speaking.
• To use [AGC] control, push
cator lights).
AGC VR
!0 RF POWER CONTROL [RF PWR] (p. 3-12)
Continuously varies the RF output power from minimum (5 W*) to maximum (200 W*).
([AGC VR] indi-
Slow
*AM mode: 5 W to 50 W
Fast
Increases
!6 SQUELCH CONTROL [SQL]
(outer control; p. 3-9)
Adjusts the squelch threshold level. The squelch
mutes noise output from the speaker (closed condition) when no signal is received.
Decreases
!1 BREAK-IN SWITCH BK-IN
Push to turn the break-in function ON (semi-break-in,
full-break-in) and OFF during CW mode operation.
(p. 6-3)
• The squelch is particularly effective for FM. It is also
available in other modes.
• The 11 to 12 o’clock position is recommended for the
most effective use of the [SQL] control.
Deep
✔ 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 between CW dots and dashes.
Noise squelch
Squelch
threshold
Shallow
1-3
Squelch is
open
S-meter
squelch
Shallow
Deep
1
PANEL DESCRIPTION
■ Front panel (continued)
TX
HF/50MHz TRANSCEIVER
POWER
RX
SPLIT
LOCK
1.8
i7700
10
TRANSMIT
VOX
MIC
BK-IN
RF PWR
MONITOR
KEY SPEED
21
DELAY
GENE
3.5
14
24
50
TUNER
MP
TIMER
!7
AGC
SQL
NR
NB
PHONES
XFC
!8
ELEC-KEY
AGC VR
NR
NB
AF
MIC
RF
F-1
F-2
F-3
F-4
F-5
F-6
F-7
SSB
CW
RTTY/PSK
AM/FM
DATA
M.SCOPE
EXIT/SET
REC
DRIVE
!9 @0 @1
@2 @3 @4 @5
COMP
MONI GAIN
@6
NR
@8
CONTRAST
@9
#0
BRIGHT
#1
PLAY
VOICE MEMORY
#2
• The indicator above the connectors lights or blinks
when the transceiver reads or writes to the memory
data.
• Unmount operation is necessary before removing the
USB-Memory* (p.12-25).
Increases
➥ Connects a PC keyboard for RTTY and PSK31
operations.
Decreases
• USB keyboard* is supported.
*: USB-Memory or USB keyboard is not supplied by
Icom.
!8 NOISE BLANKER CONTROL [NB]
(outer control; p. 5-16)
Adjust the noise blanker threshold level.
• To use this control, push
@7
ANTI VOX
@0 USB (Universal Serial Bus) CONNECTOR [USB]
(p. 2-4)
➥ Insert USB-Memory* for both reading/storing a
wide variety of the transceiver’s information and
data.
!7 NOISE REDUCTION LEVEL CONTROL [NR]
(inner control; p. 5-17)
Adjusts the DSP noise reduction level when the
noise reduction function is in use. Set for maximum
readability.
• To use this control, push
VOX GAIN
AUTO
TUNE
NB
@1 NOISE REDUCTION SWITCH NR (p. 5-17)
Push to switch DSP noise reduction ON and OFF.
Deep
• The [NR] indicator above this switch lights green when
the function is activated.
@2 AF CONTROL [AF] (inner control; p. 3-9)
Varies the audio output level of the speaker or
headphones.
Shallow
!9 AGC VOLUME SWITCH AGC VR (p. 5-11)
➥ Push to toggle [AGC] control usage ON and OFF.
Audio output
increases
• 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.
Audio output
decreases
➥ Turns the AGC function OFF when pushed and
held for 1 sec.
1-4
PANEL DESCRIPTION
@8 VOX GAIN CONTROL [VOX GAIN] (p. 6-2)
Adjusts the transmit/receive switching threshold
level for VOX operation.
@3 RF GAIN CONTROL [RF] (outer control; 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.
High
sensitivity
Push
Sensitivity
increases
Low
sensitivity
Sensitivity
decreases
@9 ANTI VOX CONTROL [ANTI VOX] (p. 6-2)
Adjusts the VOX sensitivity to speaker audio to prevent unwanted VOX activation.
@4 NOISE BLANKER SWITCH NB (p. 5-16)
➥ 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 in FM
mode, or non-pulse-type noise.
‘Less sensitive’
and confirm
proper operation
Push
‘More sensitive’
and confirm proper operation
• The [NB] indicator above this switch lights green
while the function is activated.
#0 LCD CONTRAST CONTROL [CONTRAST]
Adjusts the LCD contrast.
➥ Enters blanking-width set mode when pushed
and held for 1 sec.
High
contrast
Push
@5 DRIVE GAIN CONTROL [DRIVE] (p. 3-13)
Adjusts the transmitter level at the driver stage. Active in all modes (other than SSB mode with [COMP]
OFF).
Low
contrast
#1 LCD BRIGHTNESS CONTROL [BRIGHT]
Adjusts the LCD brightness.
Increases
Push
Decreases
Bright
Push
Dark
@6 COMPRESSION LEVEL CONTROL [COMP]
(p. 6-5)
Adjusts the speech compression level in SSB.
Push
Compression
gain decreases
#2 AUTOMATIC TUNING SWITCH [AUTOTUNE]
(p. 5-19)
Turns the automatic tuning function ON and OFF in
CW and AM modes.
Compression
gain increases
IMPORTANT!
When receiving a weak signal, or receiving a signal with interference, the automatic tuning function may tune the receiver to an undesired signal.
@7 MONITOR GAIN CONTROL [MONI GAIN] (p. 6-4)
Adjusts the transmit IF signal monitor level.
Monitor gain
increases
Push
Monitor gain
decreases
1-5
1
PANEL DESCRIPTION
■ Front panel (continued)
#3
#4 #5
#6
#7
#8
#9
SPLIT
LOCK
$0 $1
$2
TWIN-PBT
TX
NSCEIVER
RX
1.8
7700
3.5
FILTER
10
MONITOR
21
DELAY
GENE
14
24
50
18
PBT-CLR
28
F-INP
DIGI-SEL
ENT
NOTCH
DIGI-SEL
MP-W
MP-R
MW
V/M
A/B
A=B
APF/TPF
NOTCH
NB
RIT/∂TX
TS
RIT
XFC
∂TX
CLEAR
NB
RF
CW PITCH
F-1
F-2
F-3
F-4
F-5
F-6
F-7
SSB
CW
RTTY/PSK
AM/FM
DATA
M.SCOPE
EXIT/SET
SPEECH
AUTO
TUNE
LOCK
SPLIT
REC
DRIVE
COMP
MONI GAIN
VOX GAIN
ANTI VOX
CONTRAST
BRIGHT
PLAY
VOICE MEMORY
#3 MULTI-FUNCTION SWITCHES
Push to select the functions indicated in the LCD
display to the right of these switches.
MF3 (MULTI-FUNCTION 3 SWITCH)
➥ Selects one of 2 receive RF preamps
P.AMP
or bypasses them. (p. 5-9)
• “P. AMP1” activates 10 dB preamp.
• “P. AMP2” activates 16 dB high-gain preamp.
• Functions vary depending on the operating condition.
MF1 (MULTI-FUNCTION 1 SWITCH)
➥ Selects the antenna connector from
ANT
ANT1, ANT2, ANT3 and ANT4 when
pushed. (p. 10-2)
➥ Displays antenna selection memory
when pushed and held for 1 sec.
✔ What is the preamp?
The preamp amplifies signals in the receiver front end to
improve S/N ratio and sensitivity. Select “P. AMP1” or “P.
AMP2” when receiving weak signals..
• When the receive antenna is activated,
the antenna connected to [ANT4] is used
for receive only.
MF4 (MULTI-FUNCTION 4 SWITCH)
➥ Selects 6 dB, 12 dB or 18 dB attenuaATT
tor when pushed. (p. 5-9)
OFF
➥ Turns the attenuator function OFF
when pushed and held for 1 sec.
(p. 5-9)
When a transverter is in use, this [ANT]
does not function and ‘TRV’ appears.
MF2 (MULTI-FUNCTION 2 SWITCH)
➥ Selects RF power (Po), SWR, ALC,
METER
COMP, VD or ID metering during transPo
mit. (p. 3-10)
➥ Switches the multi-function digital
meter ON and OFF when pushed and
held for 1 sec. (p. 3-10)
✔ What is the attenuator?
The attenuator prevents a desired signal from being distorted when very strong signals are near the desired frequency, or when very strong electromagnetic fields, such
as from a broadcasting station, are near your location.
1-6
1
PANEL DESCRIPTION
#4 LCD FUNCTION SWITCHES F-1 – F-7
Push to select the function indicated in the LCD display above these switches.
MF5 (MULTI-FUNCTION 5 SWITCH)
➥ Activates and selects fast, mid-range
AGC
or slow AGC time constant when
MID
pushed. (p. 5-11)
• Functions vary depending on the operating condition.
• In FM mode, only “FAST” is available.
#5 TRANSMIT INDICATOR [TX]
Lights red while transmitting.
➥ Enters the AGC set mode when
pushed and held for 1 sec. (p. 5-11)
#6 RECEIVE INDICATOR [RX]
Lights green while receiving a signal and when the
squelch is open.
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.
#7 LCD FUNCTION DISPLAY (p. 1-14)
Shows the operating frequency, function switch
menus, spectrum scope screen, memory list
screen, set mode settings, etc.
✔ 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.
#8 SPLIT OPERATION INDICATOR [SPLIT]
Lights during split frequency operation.
#9 LOCK INDICATOR [LOCK] (p. 5-17)
Lights when the dial lock function is activated.
MF6 (MULTI-FUNCTION 6 SWITCH)
➥ Turns the speech compressor ON and
COMP
OFF
OFF in SSB mode. (p. 6-5)
WIDE
➥ Switches the narrow, middle or wide
compression when pushed and held
for 1 sec.
$0 TRANSMIT FREQUENCY CHECK SWITCH
[XFC] (p. 6-6)
Monitors the transmit frequency (including ∂TX frequency offset) when pushed and held during split frequency operation.
✔ What is the speech compressor?
• While pushing this switch, the transmit frequency can be
changed with the main dial, keypad, memo pad or
∫ / √ switches.
• When the split lock function is turned ON, pushing [XFC]
cancels the dial lock function. (p. 6-7)
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.
1/4
ON
TONE
OFF
$1 MEMORY UP/DOWN SWITCHES ∫ / √
(p. 8-2)
Push to select the desired memory channel.
➥ 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.
• Memory channels can be selected both in VFO and
memory modes.
➥ Switches between the tone encoder,
tone squelch function and no-tone operation when pushed in FM mode.
(pgs. 4-33, 4-34)
➥ Enters the tone set mode when
pushed and held for 1 sec. in FM
mode. (pgs. 4-33, 4-34)
$2 KEYPAD
➥ Pushing a key selects the operating band. (p. 3-4)
•
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 ∫ /
√ is necessary to end the entry. (pgs. 3-5,
8-2)
MF7 (MULTI-FUNCTION 7 SWITCH)
➥ Switches the voice squelch control
VSC
function ON and OFF; useful for scanOFF
ning. (p. 9-3)
• e.g. to enter 14.195 MHz, push
10
1-7
GENE •
1.8
28
F-INPENT
14
1.8
F-INPENT
1
PANEL DESCRIPTION
■ Front panel (continued)
$3 $4
$5
$6
$7
$8
$9 %0 %1 %2
TWIN-PBT
TX
NSCEIVER
RX
SPLIT
LOCK
1.8
7700
3.5
FILTER
10
MONITOR
21
DELAY
GENE
14
24
50
18
PBT-CLR
28
F-INP
DIGI-SEL
ENT
NOTCH
DIGI-SEL
MP-W
MP-R
MW
V/M
A/B
A=B
APF/TPF
NOTCH
NB
RIT/∂TX
TS
RIT
XFC
∂TX
CLEAR
NB
RF
CW PITCH
F-1
F-2
F-3
F-4
F-5
F-6
F-7
SSB
CW
RTTY/PSK
AM/FM
DATA
M.SCOPE
EXIT/SET
SPEECH
AUTO
TUNE
LOCK
SPLIT
REC
DRIVE
COMP
MONI GAIN
VOX GAIN
ANTI VOX
CONTRAST
BRIGHT
%3
%4
• Announces selected mode via the speech synthesizer.
(p. 12-15)
Selects USB and LSB modes alternately.
CW
Selects CW and CW-R (CW reverse)
modes alternately.
%7
%8 %9 ^0
➥ When the quick tuning step is OFF, push and
hold for 1 sec. to turn the 1 Hz tuning step ON
and OFF. (p. 3-7)
➥ When the quick tuning step is ON, push and hold
for 1 sec. to enter quick tuning step set mode.
(p. 3-6)
mode.
➥ Switches RTTY and RTTY-R (RTTY
reverse) mode when pushed and held
for 1 sec. in RTTY mode.
➥ Switches PSK and PSK-R (PSK reverse) mode when pushed and held
for 1 sec. in PSK mode.
DATA
%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.
RTTY/PSK ➥ Switches between RTTY and PSK
AM/FM
%5
$4 QUICK TUNING SWITCH [TS]
➥ Turns the quick tuning step ON and OFF.
(p. 3-6)
$3 MODE SWITCHES
Selects the desired mode. (p. 3-8)
SSB
PLAY
VOICE MEMORY
$5 VFO SELECT SWITCH A/B
Switches the selected VFO between the VFO-A and
VFO-B when pushed.
• Switches between transmit frequency and receive frequency when the split frequency function is ON. (p. 6-6)
Selects AM and FM modes alternately.
$6 MEMORY WRITE SWITCH MW (p. 8-3)
Stores the selected readout frequency and operating mode into the displayed memory channel when
pushed and held for 1 sec.
➥ 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 and held for 1 sec.
• This function is available both in VFO and memory
modes.
1-8
PANEL DESCRIPTION
%4 VOICE MEMORY RECORD SWITCH REC
(p. 7-3)
➥ Push to record the received signal for the preset
time period.
$7 MEMO PAD-WRITE SWITCH MP-W (p. 8-7)
Programs the displayed 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. 12-15)
• After the preset time has passed, stops recording automatically.
➥ Push and hold for 1 sec. to record the received
signal until the recording is canceled.
$8 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.
• Push this switch momentarily to stop recording.
• The memory records the latest 30 sec. of audio.
%5 VOICE MEMORY PLAYBACK 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 and held for 1 sec.
• The memo pad capacity can be expanded from 5 to 10
in set mode. (p. 12-15)
$9 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 and held for 1 sec. (p. 8-4)
%6 EXIT/SET SWITCH EXIT/SET
➥ Push to exit, or return to the previous screen indication during spectrum scope, memory, scan or
set mode screen display.
➥ Displays set mode menu screen when pushed
and held for 1 sec.
%0 VFO EQUALIZING SWITCH A=B (p. 3-3)
Transfers the undisplayed VFO frequency to the
displayed VFO frequency when pushed and held for
1 sec.
%7 MAIN DIAL
Changes the displayed frequency, selects set mode
setting, etc.
%1 FILTER SWITCH FILTER (p. 5-13)
➥ Selects one of 3 IF filter settings.
➥ Enters the filter set screen when pushed and
held for 1 sec.
%8 LOCK SWITCH [LOCK] (p. 5-17)
Push to switch the dial lock function ON and OFF.
%2 AUDIO PEAK FILTER/TWIN PEAK FILTER
SWITCH APF/TPF
➥ Push to turn the audio peak filter ON and OFF
during CW mode operation. (p. 4-6)
%9 SPEECH SWITCH SPEECH (p. 3-11)
➥ Push to announce the S-meter indication and the
selected frequency.
➥ The selected operating mode is additionally announced when pushed and held for 1 sec.
• “ APF ” appears when audio peak filter is in use.
➥ Push to turn the twin peak filter ON and OFF during RTTY mode operation. (p. 4-14)
^0 SPLIT SWITCH SPLIT (p. 6-6)
➥ Turns the split function ON and OFF when
pushed.
➥ Turns the split function ON. When pushed and
held for 1 sec. in non-FM modes, transfers the
unselected VFO’s readout frequency to the selected VFO’s readout and sets the unselected
VFO to transmit VFO. (Quick split function)
• “ TPF ” appears when twin peak filter is in use.
➥ During CW mode operation, push and hold for
1 sec. to select the APF passband width from
320, 160 and 80 Hz. (p. 4-6)
%3 MINI SPECTRUM SCOPE SWITCH M.SCOPE
(p. 5-4)
➥ Turns the mini spectrum scope screen ON and
OFF when pushed.
• The offset frequency is shifted from the selected VFO
frequency in FM mode. (p. 12-13)
• The quick split function can be turned OFF using set
mode. (p. 12-12)
• The mini spectrum scope screen can be displayed
with another screen, such as memory or set mode
screen, simultaneously.
➥ Turns the split function ON and shifts the unselected VFO frequency after inputting an offset.
➥ Turns the spectrum scope screen ON when
pushed and held for 1 sec.
1-9
1
PANEL DESCRIPTION
■ Front panel (continued)
TWIN-PBT
TX
RX
SPLIT
LOCK
1.8
3.5
FILTER
10
21
GENE
14
24
50
18
PBT-CLR
28
F-INP
DIGI-SEL
ENT
NOTCH
DIGI-SEL
MP-W
MP-R
MW
V/M
A/B
A=B
APF/TPF
NOTCH
RIT/∂TX
TS
^1
^2
^3
^4
^5
^6
RIT
XFC
^7
∂TX
CLEAR
F-1
SSB
F-2
CW
F-3
F-4
RTTY/PSK
F-5
AM/FM
DATA
F-6
CW PITCH
F-7
M.SCOPE
EXIT/SET
SPEECH
AUTO
TUNE
^8
LOCK
SPLIT
REC
DRIVE
COMP
MONI GAIN
VOX GAIN
ANTI VOX
CONTRAST
BRIGHT
PLAY
VOICE MEMORY
&1 &0
^1 PASSBAND TUNING CONTROLS [TWIN-PBT]
(p. 5-12)
Adjusts the receiver’s IF filter “passband width” via
the DSP.
^9
^2 PBT CLEAR SWITCH PBT-CLR (p. 5-12)
Clears the PBT settings when pushed and held for
1 sec.
• The [PBT-CLR] indicator above this switch lights when
PBT is in use.
• Passband width and shift frequency are displayed in the
multi-function display.
• Push and hold PBT-CLR for 1 sec. to clear the PBT
settings.
• Adjustment range is set to half of the IF filter passband
width. 25 Hz steps and 100 Hz steps are available.
^3 DIGITAL RF SELECTOR SWITCH DIGI-SEL
(p. 5-18)
Turns the digital RF preselector ON and OFF.
• The [DIGI-SEL] indicator lights green when the preselector is in use.
✔ What is the PBT control?
^4 DIGITAL RF SELECTOR CONTROL [DIGI-SEL]
(p. 5-18)
Adjusts the digital RF selector center frequency.
The PBT function electronically modifies the IF passband
width to reject interference. This transceiver uses the
DSP circuit for the PBT function.
• The control can be reassigned as the audio peak filter
adjustment (p. 12-16)
PBT1
PBT2
Higher
frequency
Lower
frequency
–
High cut
Center
Low cut
1-10
PANEL DESCRIPTION
^5 MANUAL NOTCH FILTER CONTROL [NOTCH]
(outer control; p. 5-18)
Varies the “valley” frequency of the manual notch filter to reject an interfering signal while the manual
notch function is ON.
^8 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.
High
frequency
• 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
Low
frequency
^9 RIT SWITCH RIT (p. 5-10)
➥ Turns the RIT function ON and OFF when
pushed.
Higher
frequency
• Use [RIT/∂TX] control to vary the RIT frequency.
➥ Adds the RIT shift frequency to the operating frequency when pushed and held for 1 sec.
Lower
frequency
✔ What is the RIT function?
^6 NOTCH SWITCH NOTCH (p. 5-18)
➥ Switches the notch function between auto, manual 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.
Receiver incremental tuning (RIT) shifts the receive frequency without shifting the transmit frequency.
This is useful for fine tuning stations calling you off-frequency or when you prefer to listen to slightly differentsounding voice characteristics, etc.
&0 CLEAR SWITCH CLEAR (pgs. 5-10, 6-4)
Clears the RIT/∂TX shift frequency when pushed
and held for 1 sec. or when pushed momentarily,
depending on the quick RIT/∂TX clear function setting (p. 12-15).
• “ MN ” appears when manual notch is in use.
• “ AN ” appears when auto notch is in use.
➥ Switches the manual notch characteristics from
wide, middle and narrow when pushed and held
for 1 sec.
&1 ∂TX SWITCH ∂TX (p. 6-4)
➥ Turns the ∂TX function ON and OFF when
pushed.
✔ What is the notch function?
The notch function is a narrow filter that 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.
• Use [RIT/∂TX] control to vary the ∂TX frequency.
➥ Adds the ∂TX shift frequency to the operating
frequency when pushed and held 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.
^7 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
shown on the main VFO.
• 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.
Frequency
increases
Frequency
decreases
• The shift frequency range is ±9.999 kHz in 1 Hz steps
(or ±9.99 kHz in 10 Hz steps).
1-11
1
PANEL DESCRIPTION
■ Rear panel
t y
i o
!0
REMOTE
RS-232C
EXT-DISPLAY
AC
!1
15A
ANT 1
ANT 3
ANT 2
ANT 4
GND
!2
RX ANT
OUT
IN
X-VERTER
@8
@7
@6
DC OUT
15V
MAX1A
ACC
EXT
METER KEYPAD
@5 @4
EXT-SP
@3
@2 @1 @0
RELAY
ALC
ALC
ADJ
S/P DIF
OUT
IN
CW KEY
REF I/O
10MHz
-10dBm
!9 !8 !7 !6 !5 !4 !3
!0 RS-232C TERMINAL [RS-232C] (p. 2-6)
Connects an RS-232C cable, D-sub 9-pin to connect the IC-7700 to a PC.
Can be used to remotely control the IC-7700 without the optional CT-17, or for RTTY/PSK31 decoded signal output. The [RS-232C] interface is
wired as a modem (DCE).
q ANTENNA CONNECTOR 1 [ANT 1] (p. 2-5)
w ANTENNA CONNECTOR 2 [ANT 2] (p. 2-5)
e ANTENNA CONNECTOR 3 [ANT 3] (p. 2-5)
r ANTENNA CONNECTOR 4 [ANT 4] (p. 2-5)
Accept a 50 antenna with a PL-259 plug connector.
t GROUND TERMINAL [GND] (p. 2-4)
Connect this terminal to a ground to prevent electrical shocks, TVI, BCI and other problems.
!1 MAIN POWER SWITCH [I/O] (p. 3-2)
Turns the internal power supply ON and OFF.
!2 AC POWER SOCKET [AC] (p. 2-5)
Connects the supplied AC power cable to an AC
line-voltage receptacle.
y CIRCUIT BREAKER
Cuts off the AC input when over-current occurs.
u EXTERNAL DISPLAY TERMINAL
[EXT-DISPLAY] (p. 2-7)
Connects to an external display monitor.
!3 REFERENCE SIGNAL INPUT/OUTPUT
TERMINAL [REF I/O]
Inputs/outputs a 10 MHz reference signal.
• At least 800×600 pixel display is necessary.
i ETHERNET CONNECTOR (p. 16-6)
Connects to a PC through a LAN (Local Area Network).
!4 STRAIGHT KEY JACK [CW KEY] (p. 2-5)
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)
o CI-V REMOTE CONTROL JACK [REMOTE]
(pgs. 2-6, 14-2)
➥ 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.
(+)
(_)
1-12
PANEL DESCRIPTION
!5 S/P DIF INPUT TERMINAL [S/P DIF– IN] (p. 2-7)
!6 S/P DIF OUTPUT TERMINAL [S/P DIF– OUT]
(p. 2-7)
Connects external equipment that supports S/P DIF
input/output.
@6 TRANSVERTER CONNECTOR [X-VERTER]
(p. 2-6)
External transverter input/output connector.
Activated by voltage applied to [ACC 2] pin 6, or
when the transverter function is in use. (pgs. 2-11)
!7 ALC LEVEL ADJUSTMENT POT [ALC ADJ]
Adjusts the ALC levels.
No adjustment is required when the ALC output
level of a connected non-Icom linear amplifier is 0
to –4 V a DC.
@7 RECEIVE ANTENNA IN [RX ANT– IN]
@8 RECEIVE ANTENNA OUT [RX ANT– OUT]
Located between the transmit/receive switching circuit and receiver’s RF stage.
Connects an external unit, such as preamplifier or
RF filter, using BNC connectors, if desired.
!8 ALC INPUT JACK [ALC] (p. 2-8)
Connects to the ALC output jack of a non-Icom linear amplifier.
When no external unit is connected, [RX ANT– IN]
and [RX ANT– OUT] must be deactivated and
shorted by the switching relay internally. This setting is available on the antenna set screen. (p. 10-5)
!9 T/R CONTROL JACK [RELAY] (p. 2-8)
Connects to ground when transmitting to control an
external 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 MOSFET switching).
Transmit/Receive
switching circuit
@0 ACCESSORY SOCKET 1 [ACC 1]
@1 ACCESSORY SOCKET 2 [ACC 2]
Enable connection of external equipment such as a
linear amplifier, an automatic antenna selector/
tuner, a TNC for data communications, etc.
ANT
IN
[RX ANT]
• See p. 2-11 for socket information.
OUT
@2 EXTERNAL SPEAKER JACK [EXT-SP] (p. 2-6)
Connects an external speaker (4–8 ), if desired.
Receiver
@3 EXTERNAL KEYPAD JACK [EXT KEYPAD]
(p. 2-7)
Connects an external keypad for direct voice memory or electronic keyer control.
Transceiver mute control line (both transmit and receive) is also supported.
@4 METER JACK [METER] (p. 2-7)
Outputs a signal showing received signal strength,
transmit output power, VSWR, ALC, speech compression, VD or ID level for external meter indication.
@5 DC OUTPUT JACK [DC OUT] (p. 2-7)
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)
RX
only
Transmitter
1-13
1
PANEL DESCRIPTION
■ LCD display
r t y
!0
!1
!2
!3
!4
!5
!6
@5
@4
@3
@2
@1
!7
@0
!9
!8
q S/RF METER (pgs. 3-10, 3-11)
Shows the signal strength while receiving. Shows
the relative output power, SWR, ALC or compression levels while transmitting.
w SHIFT FREQUENCY INDICATOR (p. 5-12)
Shows the shift frequency of the IF filter.
e BAND WIDTH INDICATOR (p. 5-12)
Shows the passband width of the IF filter.
• A total of 3 meter types are available.
r BANDPASS FILTER INDICATOR
Appears when the narrow filter (500 Hz or less) is
selected during CW, RTTY or PSK31 operation.
• Standard meter
+20 +40
ID
0 10
Po
SWR 0
COMP
10
50
1.5 102
ALC
100 150
200
'dB
20
+60dB
15
250
t PASSBAND WIDTH INDICATOR (p. 5-12)
Graphically displays the passband width for twin
PBT operation and center frequency for IF shift operation.
44 52V VD
• Edgewise meter
Po 0
50
100
+20
150
y NOTCH INDICATOR (p. 5-18)
➥ “ MN ” appears when the manual notch function
is in use. This function is available in SSB, CW,
RTTY, PSK and AM modes.
➥ “ AN ” appears when the auto notch function is
in use. This function is available in SSB, AM and
FM modes.
+40 +60dB
200
250W
• Bar meter
Po 0
10
9 +20 +40 +60dB
50
100 150 200 250W
u RTTY TUNING INDICATOR
Shows the tuning condition in RTTY mode.
1-14
PANEL DESCRIPTION
@3 TX INDICATOR
Indicates the frequency readout for transmit.
i APF/TPF INDICATOR
➥ “ APF ” appears when the audio peak filter function is in use. This function is available in CW
mode. (p. 4-6)
➥ “ TPF ” appears when the twin peak filter function
is in use. This function is available in RTTY
mode. (p. 4-14)
@4 VFO/MEMORY CHANNEL INDICATOR (p. 3-3)
Indicates the VFO mode or selected memory channel number.
@5 MODE INDICATOR
Shows the selected mode.
o CLOCK READOUT
Shows the current time. Local and UTC time can be
indicated at the same time.
!0 USB-MEMORY INDICATOR
Appears when USB-Memory is connected and
blinks while reading or writing the USB-Memory.
!1 RIT INDICATOR
Appears when RIT function is in use.
!2 ∂TX INDICATOR
Appears when ∂TX function is in use.
!3 RIT/∂TX SHIFT FREQUENCY INDICATOR
Shows the shift frequency for the RIT or ∂TX function.
!4 IF FILTER INDICATOR (p. 5-13)
Shows the selected IF filter number.
!5 QUICK TUNING INDICATOR (p. 3-6)
Appears when the quick tuning step function is in use.
!6 FREQUENCY READOUTS
Shows the operating frequency.
!7 MULTI-FUNCTION SCREEN
Shows the screens for the multi-function digital
meter, spectrum scope, voice recorder, memory list,
scan, memory keyer, RTTY decoder, PSK decoder,
IF filter selection or set modes, etc.
!8 LCD FUNCTION SWITCH GUIDE
Indicates the function of the LCD function switches
( F-1 – F-7 ).
!9 MEMORY CHANNEL READOUTS
➥ Shows the selected memory channel contents in
VFO mode.
➥ Shows the VFO contents in memory mode.
@0 MULTI-FUNCTION SWITCH GUIDE
Indicates the function of the multi-function switches.
@1 SELECT MEMORY CHANNEL INDICATOR (p. 9-7)
Indicates the displayed memory channel is set as a
select memory channel.
@2 SELECT ANTENNA INDICATOR
Indicates the selected antenna.
1-15
1
PANEL DESCRIPTION
■ 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.
• PSK31 decoder screen (PSK mode; p. 4-21)
F-1
F-2
F-3
F-4
F-5
F-6
F-7
F-3
• Spectrum scope screen (p. 5-2)
• Memory list screen (p. 8-5)
F-4
• Voice recorder screen (p. 7-3)
• Scan screen (VFO mode; p. 9-4)
F-2
F-5
• Memory keyer screen (CW mode; p. 4-8)
• Scan screen (Memory mode; p. 9-6)
F-3
F-5
• RTTY decoder screen (RTTY mode; p. 4-13)
• Set mode menu screen (p. 12-2)
F-3
F-7
1-16
INSTALLATION AND CONNECTIONS
■
■
■
■
■
■
■
■
■
■
■
■
■
■
■
Section
Unpacking ……………………………………………………………… 2-2
Main dial attachment …………………………………………………… 2-2
Rack mounting handle detachment …………………………………… 2-3
Selecting a location …………………………………………………… 2-3
Grounding ……………………………………………………………… 2-4
Antenna connection …………………………………………………… 2-4
USB-Memory connection ……………………………………………… 2-4
Required connections ………………………………………………… 2-5
D Front panel …………………………………………………………… 2-5
D Rear panel …………………………………………………………… 2-5
Advanced connections ………………………………………………… 2-6
D Front panel …………………………………………………………… 2-6
D Rear panel—1 ……………………………………………………… 2-6
D Rear panel—2 ……………………………………………………… 2-7
Linear amplifier connections …………………………………………… 2-8
D Connecting the IC-PW1/EURO …………………………………… 2-8
D Connecting a non-Icom linear amplifier …………………………… 2-8
Transverter jack information …………………………………………… 2-9
FSK and AFSK (SSTV) connections ………………………………… 2-9
Microphone connector information ………………………………… 2-10
Microphones (options) ………………………………………………… 2-10
D SM-20 ……………………………………………………………… 2-10
D HM-36 ……………………………………………………………… 2-10
Accessory connector information …………………………………… 2-11
CAUTION!: The transceiver weighs approx. 24 kg (53 lb).
Always have two people available to carry, lift or
turn over the transceiver.
2-1
2
INSTALLATION AND CONNECTIONS
■ Unpacking
After unpacking, immediately report any damage to the
delivering carrier or dealer. Keep the shipping cartons.
For a description and a diagram of accessory equipment included with the IC-7700, see ‘Supplied accessories’ on p. iii of this manual.
■ Main dial attachment
The main dial is shipped unattached to the transceiver
to prevent possible damage to the dial shaft or rotary
encoder during shipping. Please attach the dial as described below.
R CAUTION!: NEVER hold any controller
knob(s), such as the main dial, when carrying or lifting the transceiver. This will damage the dial shaft or
rotary encoder.
q Slide the dial brake adjustment to the right position
(Fig. 1).
• The dial brakes move inward as shown.
Fig. 1
w Insert the main dial set-screw into the screw hole of
the main dial, then tighten the screw until the screw
extends into the shaft hole out slightly using supplied hexagonal wrench (2 mm) (Fig. 2).
Dial brake adjustment
Shorter than
1 mm (1/32 in)
• Be careful that the screw does not extend out more than
1 mm (1/32 in).
e Attach the main dial as illustrated (Fig. 3).
• Be careful to match the correct orientation of the flat face
of the shaft and the screw hole of the dial knob.
r Tighten the screw using supplied hexagonal wrench
as illustrated (Fig. 3).
Fig. 2
t Install the rubber cover of the main dial (Fig. 4).
Then adjust the main dial brake as desired.
• Be careful to match the correct position of the convex
part of the cover and the concavo part of the dial knob.
Fig. 3
Fig. 4
Side view
2-2
INSTALLATION AND CONNECTIONS
■ Rack mounting handle detachment
The rack mounting handles are supplied attached to
the transceiver to stabilize the transceiver in the shock
absorber material in the box. If you want to remove
them, use the supplied screws as described below.
FH: Flat head
PH: Pan head
q Remove the six screws from the rack mounting handles on both side and remove the rack mounting
handles.
w Tighten the supplied six screws (PH M4×8) on both
sides of the front panel and side panel.
FH M4 × 9 mm
✔ When re-packing and shipping the transceiver:
Attach the rack mounting handles using original screws
when re-packing and shipping the transceiver at any
time.
FH M4 × 15 mm
PH M4 × 8 mm
■ 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 feet for
desktop use. Set the feet to one of two angles depending on your operating preference.
2-3
2
INSTALLATION AND CONNECTIONS
■ 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 importance, along with output power and receiver sensitivity. Select antenna(s), such as a well-matched 50
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.
PL-259 CONNECTOR INSTALLATION EXAMPLE
30 mm
Coupling ring
Slide the coupling ring
down. Strip the cable
jacket and in the braid.
10 mm (soft solder)
10 mm
Soft
solder
1–2 mm
Strip the cable as
shown at left. Tin the
center conductor.
When using 1 antenna, use the [ANT1] connector.
CAUTION: Protect your transceiver from lightning
by using a lightning arrestor.
solder solder
Slide the connector
body on and solder it.
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-7700 has an SWR
meter to monitor the antenna SWR continuously.
Screw the coupling
ring
onto
the
connector body.
30 mm § 9⁄8 in 10 mm § 3⁄8 in 1–2 mm § 1⁄16 in
■ USB-Memory connection (USB-Memory: Not supplied by Icom)
Connect the USB-Memory* to the USB connector.
• Unmount operation is necessary before removing the USBMemory* (p.12-25).
Make sure to connect the USB-Memory correctly.
NEVER connect or remove the USB-Memory when
the read/write indicator lights or blinks.
A USB keyboard* or USB hub* can also be connected to the USB connector.
or
*: USB-Memory, USB keyboard or USB hub is not supplied
by Icom.
2-4
2
INSTALLATION AND CONNECTIONS
■ Required connections
D Front panel
CW key
TX
HF/50MHz TRANSCEIVER
POWER
RX
i7700
TRANSMIT
VOX
MIC
BK-IN
RF PWR
MONITOR
KEY SPEED
DELAY
TUNER
A straight or bug key can be used when
the internal electronic keyer is turned
OFF in keyer set mode. (p. 4-12)
TIMER
AGC
SQL
NR
NB
PHONES
Microphones (p. 2-10)
ELEC-KEY
AGC VR
Optional
SM-20
NR
MIC
Optional
HM-36
NB
AF
RF
DRIVE
Use the heaviest gauge
wire or strap available and
make the connection as
short as possible.
AC outlet
R WARNING:
Use the supplied
AC power cable
only.
Grounding prevents electrical shocks, TVI and
other problems.
REMOTE
EXT-DISPLAY
RS-232C
AC
15A
ANT 1
ANT 3
ANT 2
ANT 4
GND
RX ANT
OUT
IN
X-VERTER
DC OUT
15V
MAX1A
ACC
EXT
METER KEYPAD
EXT-SP
RELAY
Antenna 1, 2, 3, 4 (p. 2-4)
[Example]: ANT1 for 1.8–18 MHz bands, ANT 2 for 21–28 MHz bands
ANT3 for 50 MHz band, ANT 4 for receive antenna.
NOTE: Attach the supplied antenna connector cap when no antenna or external equipment is connected.
2-5
ALC
ALC
ADJ
S/P DIF
OUT
IN
F-2
CW
COMP
D Rear panel
Ground
(p. 2-4)
F-1
SSB
CW KEY
Straight key
REF I/O
10MHz
-10dBm
MONI GAIN
F-3
RTTY/PS
VOX GAIN
2
INSTALLATION AND CONNECTIONS
■ Advanced connections
D Front panel
USB-Memory
Headphones
TX
HF/50MHz TRANSCEIVER
POWER
RX
i7700
TRANSMIT
BK-IN
VOX
MIC
RF PWR
MONITOR
KEY SPEED
DELAY
TUNER
TIMER
Keyboard
Connects an USB type PC keyboard directly for RTTY/PSK31 operation, as well as other text edit operations.
AGC
SQL
NR
NB
PHONES
ELEC-KEY
AGC VR
NR
MIC
MIC
The AFSK modulation signal can also
be input to [MIC].
NB
AF
RF
DRIVE
F-1
F-2
F-3
SSB
CW
RTTY/PSK
COMP
MONI GAIN
D Rear panel— 1
Antenna 1, 2, 3, 4 (p. 2-8)
Connects a linear amplifier,
antenna selector, etc.
[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].
[X-VERTER]
Connects a transverter
for V/UHF band use.
REMOTE
EXT-DISPLAY
RS-232C
AC
15A
ANT 1
ANT 3
ANT 2
ANT 4
GND
RX ANT
OUT
IN
RX ANT IN/OUT
Connects an external
preamp or lowpass filter.
X-VERTER
DC OUT
15V
MAX1A
ACC
EXT
METER KEYPAD
EXT-SP
External speaker (p. 15-4)
RX ANT IN/OUT must be
activated in the antenna
set screen (p.10-5).
SP-20
(option)
2-6
RELAY
ALC
ALC
ADJ
S/P DIF
OUT
IN
CW KEY
REF I/O
10MHz
-10dBm
[RELAY], [ALC] (p. 2-8)
Used for connecting a
non-Icom linear amplifier.
ACC sockets
(pgs. 2-9, 2-11)
VOX GAIN
INSTALLATION AND CONNECTIONS
D Rear panel— 2
Ethernet connector (p. 16-6)
External Display
Connects a PC-style
monitor display (at least
800×600 resolution).
Video output signal can
be turned ON and OFF
in set mode (p. 12-11)
Connects a PC
via a LAN for the
CPU firmware
update.
REMOTE
EXT-DISPLAY
RS-232C
AC
15A
ANT 1
ANT 3
ANT 2
ANT 4
GND
RX ANT
OUT
IN
X-VERTER
DC OUT
15V
MAX1A
ACC
EXT
METER KEYPAD
EXT-SP
[METER]
Connects an external meter, etc.
RELAY
ALC
ALC
ADJ
S/P DIF
OUT
IN
CW KEY
REF I/O
10MHz
-10dBm
[S/P DIF IN/OUT]
Connects a PC for
audio signal data
(48 kHz, 16-bit)
input/output.
3.5 (d) mm; 1⁄8″ plug
[DC OUT]
Outputs regulated 14 V
(approx.) DC for external
equipment power supply.
(max. 1 A capacity)
External keypad
Connects an external keypad for direct voice memory
and memory keyer controls.
EXTERNAL KEYPAD
3.5 (d) mm; 1⁄8″ plug
1.5 kΩ
±5%
1.5 kΩ
±5%
2.2 kΩ
±5%
4.7 kΩ
±5%
S1
(T1/M1)
S2
(T2/M2)
S3
(T3/M3)
S4
(T4/M4)
Mute switch: Mutes both transmission and
reception when switched ON during transceive operation, etc.
2-7
2
INSTALLATION AND CONNECTIONS
■ Linear amplifier connections
D Connecting the IC-PW1/EURO
To an
antenna
ACC-1
ACC cable (supplied with the IC-PW1/EURO)
Remote control cable (supplied with the IC-PW1/EURO)
Coaxial cable
REMOTE
ANT
(supplied with the
IC-PW1/EURO)
Be sure to connect the cable
to the 7-pin ACC 2 jack.
Connect
[INPUT2]
if necessary
INPUT1
INPUT2
REMOTE
Coaxial cable*
EXCITER
1&2
ANT1
ANT2
GND
ACC 2
GND
Transceiver
IC-PW1/EURO
AC outlet
*Optional
Ground
(Non-European versions: 100–120/220–240 V
European version
: 230 V)
D Connecting a non-Icom linear amplifier
R WARNING:
Set the transceiver output power and linear amplifier ALC output level after referring to the linear amplifier instruction manual.
ANT1
To an
antenna
RF OUTPUT
RELAY
50 1
coaxial cable
The ALC input level must be in the range 0 V to
–4 V. The transceiver does not accept positive voltage. Non-matched ALC and RF power settings
could overheat or damage the linear amplifier.
Transceiver
ALC
The maximum signal level of [RELAY] jack is
16 V/0.5 A DC with initial setting, and 250 V/200 mA
with “MOSFET” setting (see p. 12-8 for details). Use
an external relay unit if your non-Icom linear amplifier requires control voltage and/or current greater
than specified.
RF INPUT
SEND
ALC
Non-Icom linear amplifier
2-8
INSTALLATION AND CONNECTIONS
■ Transverter jack information
When 2 to 13.8 V is applied to pin 6 of [ACC 2], the [XVERTER] connector is activated for transverter operation and the antenna connectors do not receive or
transmit any signals.
While receiving, [X-VERTER] connector can be activated as an input terminal from an external transverter.
While transmitting, the [X-VERTER] connector outputs
signals of the displayed frequency at –20 dBm (22 mV)
as signals for the external transverter.
Transverter connector
■ FSK and AFSK (SSTV) connections
To connect a TNC or scan converter, etc., refer to the
diagram below.
D FSK operation— when connecting to [ACC 1]
• When using a PC application
RTTY
RTTY OUTPUT
GND
GND
AF
AUDIO INPUT
SEND
PTT
Connect to serial port, parallel
port, speaker jack, microphone
jack and line IN/OUT jack, etc.
See the instruction manual of the
application for details.
PC
Rear panel view
TNC or scan converter
• When using a TNC
RTTY
GND
RTTY OUTPUT
AF
SEND
AUDIO INPUT
RS-232C
GND
PTT
Rear panel view
D AFSK operation
• When connecting to [ACC 1]
Rear panel view
• When using a PC application
Audio output
GND
AF input
PTT
Rear panel view
PC
n†
• When connecting to [MIC]
w i y
Connect to serial port, parallel
port, speaker jack, microphone
jack and line IN/OUT jack, etc.
See the instruction manual of
the application for details.
v*
n†
n†
• When using a TNC
AFSK output
TNC or scan converter
RS-232C
AF input
PTT*
GND
SQL input†
*When using the VOX function, no need to connect. Refer to the instruction
manual of the external equipment (TNC, etc.).
†
When connecting the squelch line, consult the necessary manual (TNC, etc.).
2-9
2
INSTALLATION AND CONNECTIONS
■ Microphone connector information
(Front panel view)
i AF output (varies with [AF])
q Microphone input
[MIC]
Pin No.
u GND
(Microphone ground)
w +8 V DC output
y GND (PTT ground)
e Frequency up/down
t PTT
r Squelch switch
FUNCTION
DESCRIPTION
+8 V DC output
Max. 10 mA
Frequency up
Ground
Frequency down
Ground through 470
Squelch open
“Low” level
Squelch closed
“High” level
CAUTION: DO NOT short pin 2 to ground as this
can damage the internal 8 V regulator.
NOTE: DC voltage is applied to pin 1 for microphone operation. Use caution when using a nonIcom microphone.
■ Microphones (options)
q UP/DOWN SWITCHES [UP]/[DN]
Change the selected readout frequency or memory
channel.
D SM-20
• Continuous pushing changes the frequency or memory
channel number continuously.
• While pushing [XFC], the transmit readout frequency can
be controlled while in split frequency operation.
• The [UP]/[DN] switch can simulate a key paddle. Preset
in the keyer set mode. (p. 4-12)
w PTT SWITCH
Push and hold to transmit; release to receive.
e PTT LOCK SWITCH (available for SM-20 only)
Push to toggle between transmit and receive.
D HM-36
2-10
INSTALLATION AND CONNECTIONS
■ Accessory connector information
ACC 1
PIN No. NAME
8 3
RTTY Controls RTTY keying
GND Connects to ground.
Connected in parallel with ACC 2 pin 2.
Input/output pin.
SEND Goes to ground when transmitting.
When grounded, transmits.
Ground level
: –0.5 V to 0.8 V
Output current
: Less than 20 mA
Input current (Tx) : Less than 200 mA
Connected in parallel with ACC 2 pin 3.
MOD
AF
SQLS
13.8 V 13.8 V output when power is ON.
ALC
PIN No. NAME
SPECIFICATIONS
“High” level
“Low” level
Output current
ACC 2
DESCRIPTION
Modulator input.
Connects to a modulator.
Input impedance
Input level
: More than 2.4 V
: Less than 0.6 V
: Less than 2 mA
: 10 k
: Approx. 100 mV rms
AF detector output.
Output impedance : 4.7 k
Fixed, regardless of [AF] position
Output level
: 100–300 mV rms
in default settings. (see notes below)
Squelch output.
Goes to ground when squelch opens.
SQL open
SQL closed
: Less than 0.3 V/5 mA
: More than 6.0 V/100 μA
Output current
: Max. 1 A
Connected in parallel with ACC 2 pin 7.
Control voltage
: –4 V to 0 V
Input impedance
: More than 10 k
Connected in parallel with ACC 2 pin 5.
ALC voltage input.
DESCRIPTION
SPECIFICATIONS
Output voltage
Output current
8V
Regulated 8 V output.
GND
Same as ACC 1 pin 2.
SEND
Same as ACC 1 pin 3.
BAND
ALC
Same as ACC 1 pin 8.
TRV
Activates [X-VERTER] input/output Input impedance
when “HIGH” voltage is applied.
Input voltage
13.8 V
Band voltage output.
(Varies with amateur band)
Output voltage
: 8 V ±0.3 V
: Less than 10 mA
: 0 to 8.0 V
: More than 10 k
: 2 to 13.8 V
Same as ACC 1 pin 7.
NOTE: If the CW side tone level limit or beep level
limit is in use, the CW side tone or beep tone decreases from the fixed level when the [AF] control is
rotated above a specified level. (p. 12-6)
2-11
BASIC OPERATIONS
■
■
■
■
■
■
■
■
■
■
■
■
■
Section
When first applying power (CPU resetting) ………………………… 3-2
Initial settings …………………………………………………………… 3-2
Selecting VFO/memory mode ………………………………………… 3-3
VFO selection …………………………………………………………… 3-3
D Selecting VFO-A/VFO-B …………………………………………… 3-3
D VFO equalization …………………………………………………… 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
D 1⁄4 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
Voice synthesizer operation ………………………………………… 3-11
Basic transmit operation ……………………………………………… 3-12
D Transmitting ………………………………………………………… 3-12
D Microphone gain adjustment ……………………………………… 3-12
D Drive gain adjustment ……………………………………………… 3-13
3-1
3
BASIC OPERATIONS
■ When first applying power (CPU resetting)
Before first applying power, make sure all connections
required for your system are complete by referring to
Section 2. Then, reset the transceiver using the following procedure.
Resetting CLEARS all programmed contents in
memory channels and returns programmed values
in set mode to default values.
q Turn the main power ON with [I/O] on the rear
panel.
[I/O]
• The transceiver power is still OFF and the power indicator lights orange.
w While pushing and holding F-INP ENT and
push POWER to turn power ON.
• The CPU is reset.
• The CPU start-up takes approx. 5 sec.
• The transceiver displays its initial VFO frequencies
when resetting is complete.
F-INP ENT
MW
POWER
MW
e Change the set mode settings after resetting, if desired.
In cooler temperatures, the LCD may appear dark
and unstable after turning power ON. This is normal
and does not indicate any equipment malfunction.
■ Initial settings
After resetting the transceiver, set controls as shown
in the figure below.
[KEY SPEED]
: 10–12 o’clock
[NR]
: Max. counter clockwise
[DELAY]
: Max. clockwise
[NB]
: Max. counter clockwise
TWIN-PBT
TX
HF/50MHz TRANSCEIVER
POWER
RX
SPLIT
LOCK
1.8
i7700
[MIC]
: 10–12 o’clock
TRANSMIT
VOX
MIC
BK-IN
RF PWR
MONITOR
KEY SPEED
3.5
FILTER
10
21
DELAY
GENE
14
24
50
TUNER
18
PBT-CLR
28
F-INP
DIGI-SEL
ENT
NOTCH
DIGI-SEL
MP-W
[RF PWR]
: Max. clockwise
TIMER
MP-R
MW
V/M
A/B
A=B
APF/TPF
NOTCH
AGC
SQL
NR
NB
PHONES
RIT/∂TX
TS
[AGC]: 12 o’clock
[SQL]
: Max. counterclockwise
[NOTCH]
: 12 o’clock
[DEGI-SEL]
: 12 o’clock
RIT
XFC
∂TX
ELEC-KEY
CLEAR
AGC VR
MIC
NR
AF
NB
RF
F-1
F-2
F-3
F-4
F-5
F-6
F-7
SSB
CW
RTTY/PSK
AM/FM
DATA
M.SCOPE
EXIT/SET
CW PITCH
SPEECH
AUTO
TUNE
LOCK
SPLIT
REC
DRIVE
COMP
MONI GAIN
VOX GAIN
ANTI VOX
[AF]
: Max. counterclockwise
CONTRAST
BRIGHT
PLAY
VOICE MEMORY
[CW PITCH]
: 12 o’clock
[RF]
: Max. clockwise
[DRIVE], [COMP], [MONI GAIN],
[VOX GAIN], [ANTI VOX]
: 12 o’clock
3-2
BASIC OPERATIONS
■ Selecting VFO/memory mode
➥ Push V/M
modes.
to switch between VFO and memory
• “ VFO-A ” or “ VFO-B ” appears when in VFO mode, or the
selected memory channel number appears when in
memory mode.
• Pushing and holding V/M for 1 sec. transfers the
contents of the selected memory channel to VFO.
(p. 8-4)
V/M
“VFO” indicator
Memory channel
number
■ VFO selection
VFO is an abbreviation of Variable Frequency Oscillator, and is commonly referred to as a main tuning function.
The main dial is often called the “VFO knob.”
D Selecting VFO-A/VFO-B
➥ In VFO mode, push
VFO-B.
A/B
to toggle VFO-A and
• “ VFO-A ” or “ VFO-B ” appears when VFO-A or VFO-B is
selected, respectively
A/B
D VFO equalization
➥ In VFO mode, push and hold A=B for 1 sec. to
set the undisplayed VFO frequency and mode to
those of the displayed VFO.
• Three beeps sound when the VFO equalization is completed.
A=B
3-3
3
BASIC OPERATIONS
■ Selecting an operating band
The triple band stacking register provides 3 memories
for each band key, storing frequency and mode information.
Band keys
This function is convenient when you operate 3 modes
on one band. For example, one register is used for a
CW frequency, another for an SSB frequency and the
other one for an RTTY frequency.
If a band key is pushed once, the frequency and operating mode last used are called up. When the key is
pushed again, another stored frequency and operating
mode are called up.
See the table below for a list of the bands available
and the default settings for each band.
BAND
REGISTER 1
1.8 MHz
3.5 MHz
7 MHz
10 MHz
14 MHz
18 MHz
21 MHz
24 MHz
28 MHz
50 MHz
General
1.900000 MHz
3.550000 MHz
7.050000 MHz
10.120000 MHz
14.100000 MHz
18.100000 MHz
21.200000 MHz
24.950000 MHz
28.500000 MHz
50.100000 MHz
15.000000 MHz
REGISTER 2
CW
LSB
LSB
CW
USB
USB
USB
USB
USB
USB
USB
1.910000 MHz
3.560000 MHz
7.060000 MHz
10.130000 MHz
14.200000 MHz
18.130000 MHz
21.300000 MHz
24.980000 MHz
29.500000 MHz
50.200000 MHz
15.100000 MHz
CW
LSB
LSB
CW
USB
USB
USB
USB
USB
USB
USB
REGISTER 3
1.915000 MHz
3.580000 MHz
7.020000 MHz
10.140000 MHz
14.050000 MHz
18.150000 MHz
21.050000 MHz
24.900000 MHz
28.100000 MHz
51.000000 MHz
15.200000 MHz
CW
LSB
CW
CW
CW
USB
CW
CW
CW
FM
USB
D Using the band stacking registers
q Push 14 5 , then select a frequency and an operating mode.
[Example]: 14 MHz band
1.8
10
21
GENE
3.5
14
24
50
18
28
• Frequency and operating mode are memorized in the
first band stacking register.
w Push 14 5 again, then tune to another frequency
and operating mode.
• This frequency and operating mode are memorized in
the second band stacking register.
e Push 14 5 again, then tune to another frequency
and operating mode.
F-INP
ENT
• This frequency and operating mode are memorized in
the third band stacking register.
• When a fourth frequency and operating mode are selected on a band, the first register set in step q, is over
written.
3-4
BASIC OPERATIONS
■ Frequency setting
The transceiver has several tuning methods for convenient frequency tuning.
D Tuning with the main dial
q Push the desired band key on the keypad 1–3
times.
Band keys
• 3 different frequencies can be selected on each band
with the band key.
w Rotate the main dial to set the desired frequency.
If the dial lock function is activated, the lock indicator
lights, and the main dial does not function. In this
case, push [LOCK] to deactivate the lock function.
(see p. 5-17 for details)
Main dial
D Direct frequency entry with the keypad
The transceiver has a keypad for direct frequency
entry as described below.
q Push
Keypad
F-INP ENT .
• “ F-INP ” indicator appears and keypad backlight lights.
w Input the desired frequency
• Push GENE • to input “. (decimal point)” between the
MHz units and kHz units.
e Push
F-INP ENT
to set the input frequency.
• To cancel the input, push ∫ / √ instead of
[EXAMPLE]
7.00000 MHz
Push F-INPENT
21.24000 MHz
Push F-INPENT
21
3.5
F-INP
ENT
1.8
GENE
3.5
21.24000 MHz ⇒ 21.36000 MHz
Push F-INPENT GENE
850 kHz (0.85000 MHz)
Push F-INPENT 50 0 GENE
24
18
14
10
F-INP
ENT
F-INP
ENT
F-INP
ENT
3-5
F-INPENT
3
BASIC OPERATIONS
D Quick tuning step
The operating frequency can be changed in larger
steps (0.1, 1, 5, 9, 10, 12.5, 20 or 25 kHz selectable)
for quick tuning.
q Push [TS] to turn the quick tuning function ON.
• “Z” appears when the quick tuning function is ON.
w Rotate the main dial to change the frequency in programmed kHz steps.
e Push [TS] again to turn OFF the indicator.
r Rotate the main dial for normal tuning if desired.
Select mode
Main dial
TS
Quick tuning indicator
D Selecting “kHz” step
q Push [TS] to turn the quick tuning function ON and
OFF.
• “Z” appears when the quick tuning function ON.
w Push and hold [TS] for 1 sec. to enter quick tuning
step set mode.
• Selected tuning steps for all modes appear.
e Select the desired operating mode.
r Rotate the main dial to select the desired tuning step.
t Repeat steps e and r to select quick tuning steps
for other modes, if desired.
y Push EXIT/SET to exit the setting display.
NOTE: When entering quick tuning step set mode,
the quick tuning function must be activated first.
D 1⁄4 tuning step function
When operating in SSB data, CW, RTTY or PSK, the
1⁄4 tuning function is available. Dial rotation is reduced
to 1⁄4 of normal speed when the 1⁄4 tuning function is
ON for finer tuning control.
1/4
➥ Push [1/4] (MF6) to toggle the 1⁄4 tuning function ON
and OFF.
• “ 1⁄4 ” appears when the 1⁄4 tuning function is ON.
1⁄4
tuning step OFF
1/4
OFF
1⁄4
tuning step ON
1/4
ON
3-6
BASIC OPERATIONS
D Selecting 1 Hz step
A minimum tuning step of 1 Hz can be used for fine
tuning.
q Push [TS] to turn the quick tuning function OFF.
w Push and hold [TS] for 1 sec. to turn the 1 Hz tuning
step ON and OFF.
1Hz step indicator
D Auto tuning step function
When rotating the main dial rapidly, the tuning speed
accelerates automatically as selected.
q Push EXIT/SET several times to close a multi-function screen, if necessary.
w Push [SET] F-7 to select set mode menu screen.
• Pushing and holding EXIT/SET for 1 sec. also selects set
mode menu screen.
∫
√
OTHERS
F-1
F-2
F-5
EXIT/SET
e Push [OTHERS] F-5 to enter Others set mode.
r Push [Y] F-1 or [Z] F-2 to select “MAIN DIAL
Auto TS.”
t Rotate the main dial to select the desired condition
from high, low and OFF.
• High : Approx. 5 times faster
• Low : Approx. twice faster
• OFF : Auto tuning step is turned OFF.
y Push EXIT/SET to exit the set mode.
SET
F-7
D Band edge warning beep
When you tune outside of an amateur band’s frequency
range, a warning beep sounds.
This function can be turned OFF in set mode, if desired.
q Push EXIT/SET several times to close a multi-function screen, if necessary.
w Push [SET] F-7 to select set mode menu screen.
• Pushing and holding EXIT/SET for 1 sec. also selects set
mode menu screen.
e Push [OTHERS] F-5 to enter Others set mode.
r Push [Y] F-1 or [Z] F-2 to select “Beep (Band
Edge).”
t Rotate the main dial to turn the band edge warning
beep ON and OFF.
y Push EXIT/SET to exit the set mode.
3-7
3
BASIC OPERATIONS
■ Operating mode selection
SSB (USB/LSB), SSB data (USB data/LSB data), CW,
CW reverse (CW-R), RTTY, RTTY reverse (RTTY-R),
PSK, PSK reverse (PSK-R), AM, AM data, FM and FM
data modes are available in the IC-7700. Select the
desired operation mode as follows.
To select a mode of operation, push the desired mode
switch momentarily. Push the switch again to toggle
between USB and LSB, CW and CW-R, RTTY/RTTYR and PSK/PSK-R, AM and FM, if desired. Push and
hold the switch for 1 sec. to toggle between RTTY and
RTTY-R, PSK and PSK-R, if desired.
SSB
CW
RTTY/PSK
AM/FM
See the diagram below left for the order of selection.
DATA
Microphone signals are muted when data mode is
selected.
• Selecting SSB mode
➥ Push SSB to select USB or LSB.
USB
CW
RTTY-R
RTTY
AM
USB
LSB
AM
FM
• USB is selected first when above 10 MHz; or LSB is selected first when below 10 MHz operation.
(USB is selected when 5 MHz band is selected for the
USA version.)
• After USB or LSB is selected, push SSB to toggle
between USB and LSB.
LSB
CW-R
PSK
• Selecting CW mode
➥ Push CW to select CW.
PSK-R
• After CW is selected, push
CW and CW reverse mode.
FM
USB-D1
LSB-D1
AM-D1
FM-D1
to toggle between
• Selecting RTTY/PSK mode
➥ Push RTTY/PSK to select RTTY or PSK.
USB-D2
LSB-D2
AM-D2
FM-D2
• After RTTY or PSK is selected, push RTTY/PSK to toggle
between RTTY and PSK.
• After RTTY or PSK is selected, push and hold RTTY/PSK
for 1 sec. to toggle between RTTY and RTTY reverse,
or, PSK and PSK reverse mode, respectively.
USB-D3
LSB-D3
AM-D3
FM-D3
Push mode switch
for 1 sec.
CW
• Selecting AM/FM mode
➥ Push AM/FM to select AM or FM.
• After AM or FM is selected, push AM/FM to toggle between AM and FM.
Push mode switch
momentarily.
• Selecting DATA mode
➥ After USB, LSB, AM or FM is selected, push
DATA to select USB data, LSB data, AM data or
FM data mode, respectively.
• After data mode is selected, push DATA to toggle between regular voice and data mode.
• After data mode is selected, push and hold DATA for
1 sec. to select data 1, 2 and 3 in sequence.
3-8
BASIC OPERATIONS
■ Volume setting
➥ Rotate [AF] control clockwise to increase, counterclockwise to decrease the audio output level.
• Set a suitable audio level.
[AF]
Audio output
increases
Audio output
decreases
■ RF gain adjustment
➥ Rotate [RF] control clockwise to increase, counterclockwise to decrease the receiver sensitivity.
NOTE:
When [RF] control is adjusted CCW in FM mode,
audio output decreases then disappears. This is normal, not a malfunction.
[RF]
Sensitivity
increases
Sensitivity
decreases
■ Squelch level adjustment
The squelch mutes noise output from the speaker
(closed squelch) when no signal is received.
➥ When no signal is received, rotate [SQL] control
fully counterclockwise first, then rotate [SQL] clockwise to the point that the noise just disappears.
• Push and hold MONITOR to open the squelch temporarily.
[SQL]
MONITOR
Noise squelch
(Recommended level; FM mode only)
Squelch is
open
S-meter
squelch
3-9
3
BASIC OPERATIONS
■ Meter indication selection
The S/RF meter indication, during transmit, can be selected from the following items as you desire.
➥ Push [METER] (MF2) several times to select the desired item.
METER
METER
Po
METER
SWR
METER
ALC
Signal strength
level readout
+20 +40
ID readout
ID
Power level
readout
0 10
SWR 0
COMP
Po
10
50
1.5 102
ALC
100 150
200
20
+60dB
15
250
'dB
Indicates the VSWR on the transmission
line.
Indicates the ALC level. The ALC circuit
begins to activate when the RF output
power reaches a preset level.
METER
COMP
Indicates the compression level when
the speech compressor is in use.
METER
ID
Indicates the drain current of the final
amplifier MOSFETs.
METER
VD
Indicates the drain terminal voltage of
the final amplifier MOSFETs.
44 52V VD
VSWR readout
Compression level
ALC level readout
readout
Indicates the RF output power in watts.
VD readout
D Multi-function digital meter
METER
The IC-7700 can display the multi-function digital
meter on the LCD display. This meter displays all
transmit parameters simultaneously.
P-HOLD
F-1
q Push and hold [METER] for 1 sec. to turn the multifunction digital meter ON.
w Push [P-HOLD] F-1 to toggle the peak level hold
function ON.
• “ P-HOLD ” appears on the window title when the peak
level hold function is ON.
e Push and hold [METER] for 1 sec., or push
EXIT/SET to turn the multi-function digital meter
OFF.
“P-HOLD” indicator
3-10
BASIC OPERATIONS
D Meter type selection
A total of 3 meter types are available in the IC-7700—
Standard, Edgewise and Bar meters.
Follow the instructions below for the meter type selection.
∫
√
DISP
F-1
F-2
F-3
EXIT/SET
q Push EXIT/SET several times to return to normal
screen, if necessary.
w Push [SET] F-7 , then push [DISP] F-3 to select
display set mode.
e Push [Y] F-1 or [Z] F-2 to select “Meter type
(Normal Screen)” item.
r Rotate the main dial to select the desired meter type
from “Standard,” “Edgewise” and “Bar.”
t Push EXIT/SET to exit display set mode.
SET
F-7
• Edgewise meter
Po 0
50
100
+20
150
+40 +60dB
200
250W
• Bar meter
Po 0
10
9 +20 +40 +60dB
50
100 150 200 250W
■ Voice synthesizer operation
The IC-7700 has built-in voice synthesizer to announce the frequency, mode, etc. (S-meter level can
also be announced—p. 12-15) in clear, electronically-generated voice, in English (or Japanese).
➥ Push SPEECH to announce the currently selected frequency, etc.
• Push and hold SPEECH for 1 sec. to additionally announce the selected mode.
➥ Pushing a mode switch also announces the appropriate mode. (p. 12-15)
The output level of the voice synthesizer can be
adjusted in level set mode. (p. 12-6)
SPEECH
3-11
3
BASIC OPERATIONS
■ Basic transmit operation
Before transmitting, monitor your selected operating frequency to make sure transmitting won’t
cause interference to other stations on the same
frequency. It’s good amateur practice to listen
first, and then, even if nothing is heard, ask “is
the frequency in use” once or twice, before you
begin operating on that frequency.
D Transmitting
Before transmitting, monitor your selected operating
frequency to make sure transmitting won’t cause interference to other stations on the same frequency.
[TX] indicator
TRANSMIT
q Push TRANSMIT or [PTT] (microphone) to transmit.
• The [TX] indicator lights red.
w Push TRANSMIT again or release [PTT] (microphone) to return to receive.
✔ Adjusting the transmit output power
➥ Rotate [RF PWR].
[RF PWR]
• Adjustable range
Decreases
min. 5 W
: 5 W to 200 W
(AM mode: 5 W to 50 W)
Increases
max. 200 W
(50 W for AM)
D Microphone gain adjustment
[MIC]
Before transmitting, monitor your selected operating
frequency to make sure transmitting won’t cause interference to other stations on the same frequency.
METER
q Push [METER] (MF2) to select the ALC meter.
w Push [PTT] (microphone) to transmit.
• Talk into the microphone at your normal voice level.
e While talking into the microphone, rotate [MIC] so
that the ALC meter reading doesn’t go outside the
ALC zone. (see at left)
r Release [PTT] (microphone) to return to receive.
ALC zone
ID
0 10
SWR 0
COMP
Po
+20 +40
10
50
1.5 102
ALC
100 150
200
20
+60dB
15
250
∞dB
44 52V VD
3-12
BASIC OPERATIONS
D Drive gain adjustment
The drive gain is active for all modes other than SSB
mode with speech compressor OFF. The [DRIVE] control adjusts the amplifying gain at the driver stage.
Before transmitting, monitor your selected operating
frequency to make sure transmitting won’t cause interference to other stations on the same frequency.
METER
q Push [METER] (MF2) to select the ALC meter.
w Push [PTT] (microphone; SSB with [COMP] ON, AM
or FM), key down (CW) or push TRANSMIT (RTTY
or PSK) to transmit.
e While talking into the microphone, keying down or
transmitting, rotate [DRIVE] so that the ALC meter
reading is between 30 to 50% of the ALC scale. (see
left)
[DRIVE]
Drive gain range
• Talk into the microphone at your normal voice level.
ID
0 10
SWR 0
COMP
Po
+20 +40
10
50
1.5 102
ALC
100 150
200
20
+60dB
15
250
∞dB
r Release [PTT], stop keying or push TRANSMIT
again to return to receive.
44 52V VD
3-13
RECEIVE AND TRANSMIT
Section
■ 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
■ Electronic keyer functions ……………………………………………… 4-7
D Memory keyer screen …………………………………………………4-8
D Editing a memory keyer ………………………………………………4-9
D Contest number set mode …………………………………………4-10
D Keyer set mode ………………………………………………………4-11
■ Operating RTTY (FSK) ……………………………………………… 4-13
D Convenient functions for receive …………………………………4-14
D About RTTY reverse mode …………………………………………4-14
D Twin peak filter ………………………………………………………4-14
D Functions for the RTTY decoder indication ………………………4-15
D Setting the decoder threshold level ………………………………4-15
D RTTY memory transmission ………………………………………4-16
D Automatic transmission/reception setting …………………………4-16
D Editing RTTY memory ………………………………………………4-17
D RTTY decode set mode ……………………………………………4-18
D Data saving …………………………………………………………4-20
■ Operating PSK ………………………………………………………… 4-21
D Convenient functions for receive …………………………………4-22
D About BPSK and QPSK modes ……………………………………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 …………………………………4-33
■ Tone squelch operation ……………………………………………… 4-34
■ Data mode (AFSK) operation ………………………………………… 4-35
4-1
4
RECEIVE AND TRANSMIT
■ Operating SSB
[MIC]
q Push a band key to select the desired band.
w Push SSB to select LSB or USB.
[TX] indicator [RX] indicator Band keys
• “USB” or “LSB” appears.
• Below 10 MHz LSB is automatically selected; above
10 MHz USB is automatically selected.
e Rotate the main dial to tune a desired signal.
• The S-meter indicates received signal strength when a
signal is received.
TRANSMIT
[AF]
SSB
r Rotate [AF] to set audio to a comfortable listening
level.
t Push TRANSMIT or [PTT] (microphone) to transmit.
Main dial
• [TX] indicator lights red.
Appears
y Speak into the microphone at your normal voice
level.
• Adjust the microphone gain with [MIC] at this step, if
necessary.
u Push TRANSMIT or release [PTT] (microphone) to
return to receive.
D Convenient functions for receive
• Preamp (p. 5-9)
➥ Push [P.AMP] (MF3) several times to set the preamp OFF, preamp 1 ON or preamp 2 ON.
• Noise reduction (p. 5-17)
➥ Push NR to turn the noise reduction ON and
OFF.
• “P.AMP1” or “P.AMP2” appears when the preamp 1 or
preamp 2 is ON, respectively.
• Rotate [NR] control to adjust the noise reduction
level.
• Noise reduction indicator (above NR switch) lights
when the noise reduction is ON.
• Attenuator (p. 5-9)
➥ Push [ATT] (MF4) several times to set the attenuator in 6 dB steps.
• Notch filter (p. 5-18)
➥ Push NOTCH to turn the auto or manual notch
function ON and OFF.
• Push and hold [ATT] (MF4) for 1 sec. to turn the
attenuator function OFF.
• “ATT” and attenuation level appear when the attenuator is ON.
• Rotate [NOTCH] control to set the “valley” frequency
for manual notch operation.
• Notch indicator (above NOTCH switch) lights when
either the auto or manual notch is ON.
• Noise blanker (p. 5-16)
➥ Push NB to turn the noise blanker ON and
OFF, and then rotate [NB] control to adjust the
threshold level.
• AGC (auto gain control) (p. 5-11)
➥ Push [AGC] (MF5) switch several times to select
AGC FAST, AGC MID or AGC SLOW.
➥ Push AGC VR to turn the AGC time constant
manual setting ON and OFF.
• Noise blanker indicator (above NB switch) lights
when the noise blanker is ON.
• Push and hold NB for 1 sec. to enter noise blanker
set mode.
• Rotate [AGC] control to adjust the time constant.
• Twin PBT (passband tuning) (p. 5-12)
➥ Rotate [TWIN PBT] controls (inner/outer).
• VSC (voice squelch control) (p. 9-3)
➥ Push [VSC] (MF7) to turn the VSC function ON
and OFF.
• PBT indicator (above PBT-CLR switch) lights when
PBT is in use.
• Push and hold PBT-CLR for 1 sec. to clear the settings.
• The VSC indicator appears when the voice squelch
function is set to ON.
• Audio tone control (p. 12-4)
➥ Push [SET] F-7 then [LEVEL] F-1 to enter level
set mode. Select an item with [Y] F-1 /[Z] F-2
then rotate the main dial to adjust the audio tone.
4-2
RECEIVE AND TRANSMIT
D Convenient functions for transmit
• Speech compressor (p. 6-5)
➥ Push [COMP] (MF6) to turn the speech compressor ON and OFF.
• Transmit quality monitor (p. 6-4)
➥ Push MONITOR to turn the monitor function ON
and OFF.
• Push and hold [COMP] (MF6) for 1 sec. to select the
compression bandwidth from wide, middle and narrow.
• Rotate [MONI GAIN] to adjust the monitor gain.
• Monitor indicator (above MONITOR switch) lights
when the monitor function is ON.
• VOX (voice operated transmit) (p. 6-2)
➥ Push VOX to turn the VOX function ON and
OFF.
• Audio tone control (p. 12-5)
➥ Push [SET] F-7 then [LEVEL] F-1 to enter level
set mode. Select an item with [Y] F-1 /[Z] F-2
then rotate the main dial to adjust the audio tone.
• “ VOX ” appears when the VOX function is ON.
D About 5 MHz band operation (USA version only)
Operation on the 5 MHz band is allowed on 5 discrete
frequencies and must adhere to the following:
• USB mode
• Maximum of 50 watts ERP (Effective Radiated Power)
• 2.8 kHz bandwidth
IC-7700 Tuning
Frequency*
FCC Channel
Center Frequency*
5.33050 MHz
5.34650 MHz
5.36650 MHz
5.37150 MHz
5.40350 MHz
5.33200 MHz
5.34800 MHz
5.36800 MHz
5.37300 MHz
5.40500 MHz
It’s your responsibility to set all controls so that transmission in this band meets the stringent conditions
under which amateur operations may use these frequencies.
NOTE: We recommend that you store these frequencies, mode and filter settings into memory
channels for easy recall.
*The FCC specifies center frequencies on the
5 MHz band. However, the IC-7700 displays carrier frequency. Therefore, tune the transceiver to
1.5 kHz below the specified FCC channel center
frequency.
To assist you in operating the 5 MHz band within the
rules specified by the FCC, transmission is illegal on
any 5 MHz band frequency other than the five frequencies indicated in the table above.
4-3
4
RECEIVE AND TRANSMIT
■ Operating CW
q Push a band key to select the desired band.
w Push CW to select CW.
[KEY SPEED] [TX] indicator [RX] indicator Band keys
• After CW mode is selected, push
tween CW and CW-R modes.
• “CW” or “CW-R” appears.
CW
to toggle be-
e Rotate the main dial to tune a desired signal.
TRANSMIT
[AF]
CW
• Try to match the specified signal’s tone to the side tone
frequency.
• The S-meter indicates received signal strength when
signal is received.
Main dial
r Rotate [AF] to set audio to a comfortable listening
level.
t Push TRANSMIT to transmit.
Appears
• [TX] indicator lights red.
y Use the electric keyer or paddle to key your CW signals.
• The power meter indicates transmitted CW output
power.
u Adjust CW speed with [KEY SPEED].
• Adjustable within 6–48 WPM.
i Push TRANSMIT to return to receive.
D Convenient functions for receive
• Twin PBT (passband tuning) (p. 5-12)
➥ Rotate [TWIN PBT] controls (inner/outer).
• Preamp (p. 5-9)
➥ Push [P.AMP] (MF3) several times to set the preamp OFF, preamp 1 ON or preamp 2 ON.
• PBT indicator (above PBT-CLR switch) lights when
PBT is in use.
• Push and hold PBT-CLR for 1 sec. to clear the settings.
• “P.AMP1” or “P.AMP2” appears when the preamp 1 or
preamp 2 is ON.
• Attenuator (p. 5-9)
➥ Push [ATT] (MF4) several times to set the attenuator in 6 dB steps.
• Manual notch filter (p. 5-18)
➥ Push NOTCH to turn the manual notch function
ON and OFF.
• Push and hold [ATT] (MF4) for 1 sec. to turn the
attenuator function OFF.
• “ATT” and attenuation level appear when the attenuator is ON.
• Rotate [NOTCH] control to set the attenuating frequency.
• Notch indicator (above NOTCH switch) lights when
the manual notch is ON.
• Noise blanker (p. 5-16)
➥ Push NB to turn the noise blanker ON and
OFF, and then rotate [NB] control to adjust the
threshold level.
• AGC (auto gain control) (p. 5-11)
➥ Push [AGC] switch several times to select
AGC FAST, AGC MID or AGC SLOW.
➥ Push AGC VR to turn the AGC time constant
manual setting ON and OFF.
• Noise blanker indicator (above NB switch) lights
when the noise blanker is ON.
• Push and hold NB for 1 sec. to enter noise blanker
set mode.
• Rotate [AGC] control to adjust the time constant.
• 1⁄4 function (p. 3-6)
➥ Push [1/4] to turn the 1⁄4 function ON and OFF.
• Noise reduction (p. 5-17)
➥ Push NR to turn the noise reduction ON and
OFF.
• Auto tuning function (p. 5-19)
➥ Push [AUTOTUNE] to turn the auto tuning function ON and OFF.
• Rotate [NR] control to adjust the noise reduction
level.
• Noise reduction indicator (above NR switch) lights
when the noise reduction is ON.
• The transceiver automatically tunes the desired signal within a ±500 Hz range.
IMPORTANT!
When receiving a weak signal, or receiving a signal
with interference, the automatic tuning function may
not tune properly, or tune onto an undesired signal.
4-4
RECEIVE AND TRANSMIT
D Convenient functions for transmit
• Break-in function (p. 6-3)
➥ Push BK-IN several times to select the break-in
OFF, semi break-in and full break-in.
• “ BKIN ” or “ F-BKIN ” appears when the semi breakin or full break-in function is ON, respectively.
D About CW reverse mode
CW-R (CW Reverse) mode uses the opposite side
band to receive CW signals.
Push
Use when interfering signals are near a desired signal
and you want to use CW-R to reduce the interference.
BFO
➥ During CW mode, push
CW-R mode.
BFO
Interference Desired signal
Interference Desired signal
CW mode (LSB side)
CW-R mode (USB side)
CW
to select CW and
D About CW pitch control
The received CW audio pitch and CW side tone can
be adjusted to suit your preference (from 300 to
900 Hz in 5 Hz steps). This does not change the operating frequency.
➥ Rotate [CW PITCH] to suit your preference.
• Adjustable within 300 to 900 Hz in 5 Hz steps.
[CW PITCH]
D CW side tone function
When the transceiver is in receive (and the break-in
function is OFF— p. 6-3) you can listen to the CW side
tone without actually transmitting.
This allows you to match your transmit frequency exactly to another station’s by matching the audio tone.
You can also use the CW side tone (be sure to turn
OFF break-in!) to practice CW sending. CW side tone
level can be adjusted in level set mode (p. 12-6).
[MONI GAIN]
4-5
4
RECEIVE AND TRANSMIT
D APF (Audio Peak Filter) operation
The APF changes the audio frequency response by
boosting a particular frequency to enhance a desired
CW signal.
APF/TPF
The peak frequency can be adjusted with [DIGI-SEL]
control when “APF” is selected for “DIGI-SEL VR Operation” in Others set mode (p. 12-16).
The audio filter shape is also selectable from “SOFT”
and “SHARP” in Others set mode (p. 12-16).
q During CW mode, push APF/TPF to turn the audio
peak filter ON and OFF.
[DIGI-SEL]
• “ APF ” appears in the display and [APF/TPF] indicator
above this switch lights green.
w Push and hold APF/TPF for 1 sec. several times to
select the desired audio filter width.
• WIDE, MID and NAR filters, or, 320, 160 and 80 Hz filters are available depending on APF type setting in level
set mode.
e If “APF” is selected for “DIGI-SEL VR Operation,”
rotate [DIGI-SEL] control to suit your preference.
4-6
RECEIVE AND TRANSMIT
■ Electronic keyer functions
The IC-7700 has a number of convenient functions for
the built-in electronic keyer.
F-1
–
F-4
CW
q During CW mode, push EXIT/SET several times to
normal screen, if necessary.
w Push [KEYER] F-3 to select memory keyer screen.
e Push EXIT/SET to select memory keyer menu
screen.
r Push one of the LCD function switches ( F-1 to
F-4 ) to select the desired menu. See the diagram
below.
EXIT/SET
• Push EXIT/SET to return to the previous display.
F-1
F-2
F-3
F-4
F-5
F-6
F-7
• Memory keyer screen (p. 4-8)
• Memory keyer edit screen (p. 4-9)
F-1
EXIT/SET
F-2
• Memory keyer menu screen
F-1
F-2
F-3
F-4
• Contest number set mode (p. 4-10)
F-5
F-6
F-7
F-3
• Keyer set mode screen (p. 4-11)
F-4
4-7
4
RECEIVE AND TRANSMIT
D Memory keyer screen
Pre-set characters can be sent using the keyer send
menu. Contents of the memory keyer are set using the
edit menu.
M1
F-1
TRANSMIT
–
M4
F-4
CW
• Transmitting
q During CW mode operation, push [KEYER] F-3 to
select memory keyer screen.
w Push TRANSMIT to set the transceiver to transmit,
or set the break-in function ON (p. 6-3).
e Push one of the function keys ([M1] F-1 to [M4]
F-4 ) to send the contents of the memory keyer.
–1
F-5
• Pushing and holding a function key for 1 sec. repeatedly
sends the contents; push any function key to cancel the
transmission.
• The contest serial number counter is incremented each
time the contents are sent.
• Push [–1] F-5 to reduce the contest serial number
count by 1 when resending contents to unanswered
calls.
EXIT/SET
• Memory keyer screen
For your information
When an external keypad is connected to [EXT
KEYPAD] connector on the rear panel, the programmed contents, M1—M4, can be transmitted
without selecting the memory keyer screen.
See p. 2-7 for details.
r Push EXIT/SET twice to return to normal screen.
4-8
RECEIVE AND TRANSMIT
D Editing a memory keyer
The contents of the memory keyer memories can be
set using the memory keyer edit menu. The memory
keyer can memorize and re-transmit 4 CW key codes
for often-used CW sentences, contest serial numbers,
etc. Total capacity of the memory keyer is 70 characters per memory channel.
123
Symbol
ABC
DEL
SPACE
F-3
F-4
• Programming contents
q During CW mode operation, push [KEYER] F-3 to
select memory keyer screen.
w Push EXIT/SET to select memory keyer menu, then
push [EDIT] F-2 to select keyer edit screen.
• Memory keyer contents of Channel 1 (M1) is selected.
Ω
F-1
≈
EXIT/SET
F-2
e Push [M1..M4] F-7 several times to select the desired memory keyer channel to be edited.
r Push [ABC] (MF6) or [123] (MF7) or [Symbol] (MF7)
to select the character group, then rotate the main
dial to select the character, or push the keypad for
number input.
M1..M4
• [Symbol] appears when [123] (MF7) is pushed when
“123” character group is selected.
• Selectable characters (using the main dial);
F-7
• Memory keyer edit screen
CQ TEST CQ TEST DE ICOM ICOM TEST
UR 5NN✱ BK
M3
CFM TU
M4
QRZ?
ABC
A to Z (capital letters)
123
0 to 9 (numbers)
Symbol
/ ?^.,@✱
✔ For your convenience
When a PC keyboard is connected to [USB] connector on the front panel, the memory keyer contents can also be edited from the keyboard.
• Pre-programmed contents
CH
Contents
M2
Editable characters
NOTE:
“^” is used to transmit a following word with no
space such as AR. Put “^” before a text string
such as ^AR, and the string “AR ” is sent with no
space.
“✱” is used to insert the CW contest serial number. The serial number automatically increments
by 1. This function is only available for one memory keyer channel at a time. Memory keyer channel M2 used “✱” by default.
• Example— entered “QSL TU DE JA3YUA TEST”
into memory keyer channel 3
M1
Key selection
t Push [Ω] F-1 or [≈] F-2 to move the cursor
backwards or forwards, respectively.
• Pushing [DEL] F-3 deletes a character and [SPACE]
F-4 inserts a space.
y Repeat steps r and t to input the desired characters.
u Push EXIT/SET twice to return normal screen.
4-9
4
RECEIVE AND TRANSMIT
D Contest number set mode
This menu is used to set the contest (serial) number
and count-up trigger, etc.
∫
F-1
√
F-2
DEF
F-4
EXIT/SET
• Setting contents
q During CW mode operation, push [KEYER] F-3 to
select memory keyer screen.
w Push EXIT/SET to select memory keyer menu, then
push [001] F-3 to select contest serial number set
mode.
e Push [Y] F-1 or [Z] F-2 to select the desired set
item.
r Set the desired condition using the main dial.
Main dial
• Push and hold [DEF] F-4 for 1 sec. to select the default condition or value.
t Push EXIT/SET twice to normal screen.
• Contest number set mode screen
Number Style
Normal
This item sets the numbering system used for contest
(serial) numbers— normal or short morse numbers.
• Normal
• 190➔ANO
• 190➔ANT
• 90➔ NO
• 90➔ NT
Count Up Trigger
: Does not use short morse numbers
(default)
: Sets 1 as A, 9 as N and 0 as O.
: Sets 1 as A, 9 as N and 0 as T.
: Sets 9 as N and 0 as O.
: Sets 9 as N and 0 as T.
M2
This selects which of the four memories will contain
the contest serial number exchange. The count-up
trigger allows the serial number to automatically increment after each complete serial number exchange
is sent.
• M1, M2, M3 and M4 can be set. (default: M2)
Present Number
001
This item shows the current number for the count-up
trigger channel set above.
• Rotate the main dial to change the number, or push
and hold [001CLR] F-3 for 1 sec. to reset the current number to 001.
4-10
RECEIVE AND TRANSMIT
D Keyer set mode
This set mode is used to set the memory keyer repeat
time, dash weight, paddle specifications, keyer type,
etc.
• Setting contents
q During CW mode operation, push [KEYER] F-3 to
select memory keyer screen.
w Push EXIT/SET to select memory keyer menu, then
push [CW KEY] F-4 to select keyer set mode.
e Push [Y] F-1 or [Z] F-2 to select the desired set
item.
r Set the desired condition using the main dial.
∫
F-1
√
F-2
DEF
F-4
EXIT/SET
• Push and hold [DEF] F-4 for 1 sec. to select the default condition or value.
Main dial
t Push EXIT/SET twice to normal screen.
• Keyer set mode screen
Keyer Repeat Time
2s
When sending CW using the repeat timer, this item
sets the time between transmission.
• 1 to 60 sec. in 1 sec. steps can be selected.
(default: 2 sec.)
Dot/Dash Ratio
1:1:3.0
This item sets the dot/dash ratio.
• 1:1:2.8 to 1:1:4.5 (in 0.1 steps) can be selected.
(default: 1:1:3.0)
Keying weight example: Morse code “K”
Weight setting:
1:1:3 (default)
DASH
DOT (fixed*)
DASH
Weight setting:
Adjusted
Adjustable range
SPACE (fixed*)
*SPACE and DOT length can be
adjusted with [KEY SPEED] only.
Rise Time
4ms
This item sets the rise time of the transmitted CW envelope.
• 2, 4, 6 or 8 msec. can be selected. (default: 4 msec.)
• About rise time
Key action
Tx
Rx
Set Tx power level
Tx output power
Rise time
Time
to be continued…
4-11
4
RECEIVE AND TRANSMIT
D Keyer set mode (continued)
Paddle Polarity
Normal
This item sets the paddle polarity.
• Normal and reverse polarity can be selected.
Keyer Type
ELE-KEY
This item selects the keyer type for [ELEC-KEY] connector on the front panel.
• ELEC-KEY, BUG-KEY and Straight key can be selected. (default: ELEC-KEY)
Mic Up/Down Keyer
OFF
This item allows you to set the microphone [UP]/[DN]
keys to be used as a paddle.
• ON
• OFF
: [UP]/[DN] switches can be used for CW.
: [UP]/[DN] switches cannot be used for
CW.
NOTE: When “ON” is selected, the frequency and
memory channel cannot be changed using
the [UP]/[DN] switches.
4-12
RECEIVE AND TRANSMIT
■ Operating RTTY (FSK)
A DSP-based high-quality Baudot RTTY encoder/decoder is built-in to the IC-7700. When connecting a PC
keyboard (p. 2-6), RTTY operation can be performed
without an external RTTY terminal, TNC or PC.
If you would rather use your RTTY terminal or TNC,
consult the manual that comes with the RTTY terminal
or TNC.
[TX] indicator [RX] indicator
q Push a band key to select the desired band.
w Push RTTY/PSK to select RTTY.
Band keys
• After RTTY mode is selected, push and hold RTTY/PSK
for 1 sec. to toggle between RTTY and RTTY-R modes.
• “RTTY” or “RTTY-R” appears.
e Push [DECODE] F-3 to display the decode screen.
• The IC-7700 has a built-in Baudot decoder.
[AF]
RTTY/PSK
DECODE
r To tune the desired signal, aim for a symmetrical
waveform and ensure the peak points align with the
mark (2125 Hz) and shift (170 Hz) frequency lines
in the FFT scope.
Main dial
F-3
• The S-meter indicates received signal strength when
signal is received.
Appears
t Press [F12] on the connected keyboard to transmit.
• [TX] indicator lights red.
y Type from the keyboard to enter the contents that
you want to transmit.
• The typewritten contents are indicated in the TX buffer
screen and transmitted immediately.
• The text color will be changed when transmitted.
• Press one of [F1]–[F8] to transmit the TX memory contents.
u Press [F12] on the keyboard to return to receive.
✔ For your convenience
The transmission contents can be typed before being
transmitted.
q Perform the steps q to r above.
w Type from the connected keyboard to enter the
message that you want to transmit.
TX buffer screen
FFT scope
RX contents screen
Water-fall
• The typewritten contents are indicated in the TX buffer
screen.
e Press [F12] of the connected keyboard to transmit
the typewritten contents.
• The color of displayed text, in the TX buffer screen, will
be changed when transmitted.
• To cancel the transmission, press [F12] twice.
r Press [F12] of the keyboard to return to receive.
4-13
4
RECEIVE AND TRANSMIT
D Convenient functions for receive
• Preamp (p. 5-9)
➥ Push [P.AMP] (MF3) several times to set the preamp OFF, preamp 1 ON or preamp 2 ON.
• Noise reduction (p. 5-17)
➥ Push NR to turn the noise reduction ON and
OFF.
• “P.AMP1” or “P.AMP2” appears when the preamp 1 or
preamp 2 is ON.
• Rotate [NR] control to adjust the noise reduction
level.
• Noise reduction indicator (above NR switch) lights
when the noise reduction is ON.
• Attenuator (p. 5-9)
➥ Push [ATT] (MF4) several times to set the attenuator in 6 dB steps.
• Manual notch filter (p. 5-18)
➥ Push NOTCH to turn the manual notch function
ON and OFF.
• Push and hold [ATT] (MF4) for 1 sec. to turn the attenuator function OFF.
• “ATT” and attenuation level appear when the attenuator is ON.
• Rotate [NOTCH] control to set the attenuating frequency.
• Notch indicator (above NOTCH switch) lights when
the manual notch is ON.
• Noise blanker (p. 5-16)
➥ Push NB to turn the noise blanker ON and
OFF, and then rotate [NB] control to adjust the
threshold level.
• AGC (auto gain control) (p. 5-11)
➥ Push [AGC] switch several times to select
AGC FAST, AGC MID or AGC SLOW.
➥ Push AGC VR to turn the AGC time constant
manual setting ON and OFF.
• Noise blanker indicator (above NB switch) lights
when the noise blanker is ON.
• Push and hold NB for 1 sec. to enter noise blanker
set mode.
• Rotate [AGC] control to adjust the time constant.
• Twin PBT (passband tuning) (p. 5-12)
➥ Rotate [TWIN PBT] controls (inner/outer).
• 1⁄4 function (p. 3-6)
➥ Push [1/4] to turn the 1⁄4 function ON and OFF.
• PBT indicator (above PBT-CLR switch) lights when
PBT is in use.
• Push and hold PBT-CLR for 1 sec. to clear the settings.
D About RTTY reverse mode
Normal
170 Hz
2125 Hz
Space Mark
Received characters are occasionally garbled when
the received signal has Mark and Space tones reversed. This reversal can be caused by incorrect TNC
connections, setting, commands, etc. To receive reversed RTTY signals correctly, select RTTY-R mode.
Reverse
BFO
2125 Hz
BFO
170 Hz
Space
Mark
➥ During RTTY mode, push and hold RTTY/PSK for
1 sec. to select RTTY and RTTY-R mode.
D Twin peak filter
The twin peak filter changes audio frequency response
by boosting the mark and space frequencies (2125 and
2295 Hz) for better reception of RTTY signals.
APF/TPF
➥ During RTTY mode, push APF/TPF to turn the twin
peak filter ON and OFF.
• “ TPF ” appears in the LCD and the [APF/TPF] indicator
above this switch lights green while the filter is in use.
NOTE: When the twin peak filter is in use, the received audio output may increase. This is a normal,
not a malfunction.
4-14
RECEIVE AND TRANSMIT
D Functions for the RTTY decoder indication
HOLD/CLR
F-2
q Push a band key to select the desired band.
w Push RTTY/PSK to select RTTY.
WIDE
F-7
• After RTTY mode is selected, push and hold RTTY/PSK
for 1 sec. to toggle between RTTY and RTTY-R modes.
• “RTTY” or “RTTY-R” appears.
e Push [DECODE] F-3 to display the decode screen.
• When tuned into an RTTY signal, decoded characters
are displayed in the RX contents screen.
r Push [HOLD/CLR] F-2 to freeze the current screen.
RTTY/PSK
• “ HOLD ” appears while the function is in use.
• Push [HOLD/CLR] F-2 again to release the function.
EXIT/SET
t Push and hold [HOLD/CLR] F-2 for 1 sec. to clear
the displayed characters.
• “ HOLD ” indicator disappears at the same time when the
hold function is in use.
y Push [WIDE] F-7 to toggle the RTTY decode
screen size from normal and wide.
• S/RF meter type during wide screen indication can be
selected in display set mode. (pgs. 3-11, 12-10)
u Push EXIT/SET to close the RTTY decode screen.
• Wide screen indication
D Setting the decoder threshold level
Adjust the RTTY decoder threshold level if some characters are displayed when no signal is received.
q Select the RTTY decode screen as described
above.
w Push [ADJ] F-5 to select the threshold level setting condition.
e Rotate the main dial to adjust the RTTY decoder
threshold level.
• Push and hold [DEF] F-6 for 1 sec. to select the default setting.
r Push [ADJ] F-5 to exit from the threshold level setting condition.
The UnShift On Space (USOS) function and new
line code can be set in the RTTY set mode.
(p. 4-18)
4-15
4
RECEIVE AND TRANSMIT
D RTTY memory transmission
Pre-set characters can be sent using the RTTY memory. Contents of the memory are set using the edit
menu.
q During RTTY mode operation, push [DECODE]
F-3 to select RTTY decode screen.
w Push [TX MEM] F-4 to select RTTY memory
screen.
e Push [1–4/5–8] F-7 to select memory bank then
push one of the function keys ([RT1] F-1 to
[RT4] F-4 or [RT5] F-1 to [RT8] F-4 ).
RT1
F-1
–
RT4
F-4
or
RT5
F-1
–
RT8
F-4
EXIT/SET
• When no keyboard is connected, the selected memory
contents will be transmitted immediately.
• When a keyboard is connected, the memory contents
will be transmitted immediately when function key is
pushed, or transmitted after [F12] on the connected keyboard is pressed, depending on auto transmission/reception setting (see below).
• The transmission date, time, reception date and/or time
may be displayed in RX contents screen, depending on
setting.
1–4/5–8
F-7
D Automatic transmission/reception setting
q During RTTY mode operation, push [F-3•DECODE]
to select RTTY decode screen.
w Push [TX MEM] F-4 to select RTTY memory
screen, then push [EDIT] F-6 to select RTTY
memory edit screen.
• RTTY memory contents of the Channel 1 (RT1) is selected.
AUTO TX
F-6
EXIT/SET
e Push [RT1..RT8] F-7 several times to select the
desired RTTY memory.
r Push [AUTO TX] F-6 several times to select the
desired condition as follow.
• AUTO TX/RX : Automatically transmits the selected memory and returns to receive after the transmission.
• AUTO TX
: Automatically transmits the selected memory. To return to receive, press [F12] on the keyboard.
• AUTO RX
: Press [F12] on the keyboard to
transmit the selected memory. Automatically returns to receive after
the transmission.
• No indication : Press [F12] on the keyboard to
transmit the selected memory and
press [F12] again to return to receive.
t Push EXIT/SET to exit RTTY memory edit condition.
RT1..RT8
F-7
NOTE: The transceiver always functions in the
“AUTO TX/RX” setting when no keyboard is connected.
4-16
RECEIVE AND TRANSMIT
D Editing RTTY memory
The contents of the RTTY memories can be set using
the memory edit menu. The memory can store and retransmit 8 RTTY message for often-used RTTY information. Total capacity of the memory is 70 characters
per memory channel.
123
/ Symbol
ABC
/ abc
DEL
SPACE
F-3
F-4
• Programming contents
q During RTTY mode operation, push [F-3•DECODE]
to select RTTY decode screen.
w Push [TX MEM] F-4 to select RTTY memory
screen, then push [EDIT] F-6 to select RTTY
memory edit screen.
• RTTY memory contents of the Channel 1 (RT1) is selected.
Ω
≈
Ω≈
F-1
F-2
F-5
EXIT/SET
e Push [RT1..RT8] F-7 to several times to select the
desired RTTY memory channel to be edited.
r Push [Ω ≈] F-5 to select the edit item between
memory contents and memory name.
t Push [ABC] (MF6), [abc] (MF6), [123] (MF7) or [Symbol] (MF7) to select the character group, then rotate
the main dial to select the character, or push the
keypad for number input.
RT1..RT8
F-7
• RTTY memory edit screen
• [abc] (MF6) appears when [ABC] (MF6) is pushed when
“ABC” character group is selected, and [Symbol] (MF7)
appears when [123] (MF7) is pushed when “123” character group is selected.
• Selectable characters (with the main dial);
• Pre-programmed contents
CH
Name
Contents
RT1
MYCALLx2 ¿DE ICOM ICOM K¿
RT2
MYCALLx3 ¿DE ICOM ICOM ICOM K¿
RT3
QSLUR599 ¿QSL UR 599–599 BK¿
RT4
DE+UR599 ¿QSL DE ICOM ICOM UR 599–599
BK¿
RT5
RT6
73 GL SK
RIG&ANT
RT8
EQUIP.
Editable characters
ABC
A to Z (capital letters)
abc
¿MY TRANSCEIVER IS IC–7700 &
ANTENNA IS A 3–ELEMENT
TRIBAND YAGI.¿
a to z (small letters)
(selectable for memory name only)
123
0 to 9 (numbers)
Symbol
!#$%&¥?“‘`^+–✱/.,:;=
<>()[]{}|_~@
(For the memory contents setting, ! $ & ? “ ‘ – / . , : ; ( ) ¿ are
selectable.)
¿73 GL SK¿
CQ CQ CQ ¿CQ CQ CQ DE ICOM ICOM ICOM
K¿
RT7
Key selection
✔ For your convenience
When a PC keyboard is connected to [USB] connector on the front panel, the RTTY memory contents can also be edited from the keyboard.
¿MY RTTY EQUIPMENT IS
INTERNAL FSK UNIT &
DEMODULATOR OF THE
IC–7700.¿
y Push [Ω] F-1 or [≈] F-2 to move the cursor
backwards or forwards, respectively.
• Pushing [DEL] F-3 deletes a character and [SPACE]
F-4 inserts a space.
u Repeat steps t and y to input the desired characters.
i Push EXIT/SET to set the contents and exit RTTY
memory edit screen.
4-17
4
RECEIVE AND TRANSMIT
D RTTY decode set mode
This set mode is used to set the decode USOS function, time stamp setting, etc.
Ω≈
WIDE
F-3
F-7
• Setting contents
q During RTTY mode operation, push [DECODE]
F-3 to select RTTY decode screen.
w Push [] F-1 to select the second RTTY
decode menu, then push [SET] F-6 to select
RTTY decode set mode.
• Push [WIDE] F-7 to toggle the screen size from normal
and wide.
e Push [Y] F-1 or [Z] F-2 to select the desired set
item.
r Set the desired condition using the main dial.
∫
√
F-1
F-2
DEF
F-4
EXIT/SET
• Push and hold [DEF] F-4 for 1 sec. to select a default
condition or value.
• Push [Ω ≈] F-3 to select the set contents for some
items.
Main dial
• RTTY decode set mode screen
t Push EXIT/SET to exit from set mode.
RTTY FFT Scope Averaging
OFF
Select the FFT scope waveform averaging function
from 2 to 4 and OFF. (default: OFF)
Recommendation!
If you use the FFT scope waveform for tuning, use the
default or smaller number setting is recommended.
RTTY FFT Scope Waveform Color
51
153
255
Set the color for the FFT scope waveform.
• Push [Ω ≈] F-3 to select R (Red), G (Green) and B (Blue),
and then rotate the main dial to set the ratio from 0 to 255.
• The color is set in RGB format.
• The set color is indicated in the box beside the RGB scale.
RTTY Decode USOS
ON
Turn the capability of letter code decoding after receiving a “space” (USOS; UnShift On Space function)
ON and OFF.
• ON : Decode as letter code.
• OFF : Decode as character code.
RTTY Decode New Line Code
CR,LF,CR+LF
Selects the new line code of the internal RTTY decoder.
CR: Carriage Return, LF: Line Feed
• CR,LF,CR+LF : Makes new line with any codes.
• CR+LF
: Makes new line with CR+LF code
only.
RTTY Diddle
BLANK
Selects the diddle condition.
• BLANK
• LTRS
• OFF
4-18
: Transmits blank code during no code
transmission.
: Transmits letter code during no code
transmission.
: Turns the diddle function OFF.
4
RECEIVE AND TRANSMIT
D RTTY decode set mode (continued)
RTTY TX USOS
ON
Explicitly inserts the FIGS character even though it is
not required by the receiving station.
• ON : Inserts FIGS.
• OFF : Does not insert FIGS.
RTTY Time Stamp
ON
Turn the time stamp (date, transmission or reception
time) indication ON and OFF.
• ON : Displays the time stamp.
• OFF : No time stamp indication.
RTTY Auto CR+LF by TX
ON
Selects the automatic new line code (CR+LF) transmission capability.
• ON : Transmits CR+LF code once.
• OFF : Transmits no CR+LF code.
RTTY Time Stamp (Time)
Local
Selects the clock indication for time stamp usage.
• Local : Selects the time that set in “Time (Now).”
• UTC* : Selects the time that set in “CLOCK2.”
NOTE: The time won’t be displayed when “OFF” is
selected in “RTTY Time Stamp” as above.
*The name of choice may differ according to
“CLOCK2 Name” setting (p. 11-2). “UTC” is the
default name of CLOCK2.
RTTY Time Stamp (Frequency)
OFF
Selects the operating frequency indication for time
stamp usage.
• ON : Displays the operating frequency.
• OFF : No operating frequency display.
NOTE: The frequency won’t be displayed when “OFF”
is selected in “RTTY Time Stamp” as above.
RTTY Font Color (Receive)
128
255
128
Set the text color for received characters.
• Push [Ω ≈] F-3 to select R (Red), G (Green) and B (Blue),
and then rotate the main dial to set the ratio from 0 to 255.
• The color is set in RGB format.
• The set color is indicated in the box beside the RGB scale.
RTTY Font Color (Transmit)
255
106
106
Set the text color for transmitted characters.
• Push [Ω ≈] F-3 to select R (Red), G (Green) and B (Blue),
and then rotate the main dial to set the ratio from 0 to 255.
• The color is set in RGB format.
• The set color is indicated in the box beside the RGB scale.
RTTY Font Color (Time Stamp)
155
189
Set the text color for time stamp indication.
• Push [Ω ≈] F-3 to select R (Red), G (Green) and B (Blue),
and then rotate the main dial to set the ratio from 0 to 255.
• The color is set in RGB format.
• The set color is indicated in the box beside the RGB scale.
RTTY Font Color (TX Buffer)
255
255
255
Set the text color in the TX buffer screen.
• Push [Ω ≈] F-3 to select R (Red), G (Green) and B (Blue),
and then rotate the main dial to set the ratio from 0 to 255.
• The color is set in RGB format.
• The set color is indicated in the box beside the RGB scale.
4-19
4
RECEIVE AND TRANSMIT
D Data saving
The contents of the RTTY memory and received signal can be saved into the USB-Memory.
The USB-Memory is not supplied by Icom.
OPTION
SAVE
WIDE
F-5
F-6
F-7
DIR/FILE
EDIT
F-1
F-4
EXIT/SET
q During RTTY decode screen indication, push
[] F-1 to select the RTTY decode second menu.
w Push [SAVE] F-5 to select decode file save screen.
e Change the following conditions if desired.
• File name:
z Push [EDIT] F-4 to select file name edit condition.
• Push [DIR/FILE] F-1 several times to select the
file name, if necessary.
x Push [ABC] (MF6), [123] or [Symbol] (MF7) to
Main dial
select the character group, then rotate the
main dial to select the character.
• [ABC] (MF6): A to Z (capital letters); [123] (MF7): 0
to 9 (numerals); [Symbol] (MF7): ! # $ % & ‘ ` ^ + –
= ( ) [ ] { } _ ~ @ can be selected.
• Push [Ω] F-1 to move the cursor left, push [≈] F-2
to move the cursor right, [DEL] F-3 delete a character and push [SPACE] F-4 to insert a space.
• Decode file save screen
c Push EXIT/SET to set the file name.
• File format
z Push [OPTION] F-5 to enter save option
screen.
x Rotate the main dial to select the saving format from Text to HTML.
• Decode file save screen— file name edit
• “Text” is the default setting.
• Push and hold [DEF] F-4 for 1 sec. to select the
default setting.
c Push EXIT/SET to return to the previous indication.
• Saving location
z Push [DIR/FILE] F-1 to select tree view
screen.
x Select the desired directory or folder in the
USB-Memory.
• Save option screen
• Push [Ω ≈] F-4 to select the upper directory.
• Push [Y] F-2 or [Z] F-3 to select folder in the
same directory.
• Push and hold [Ω ≈] F-4 for 1 sec. to select a
folder in the directory.
• Push [REN/DEL] F-5 to rename the folder.
• Push and hold [REN/DEL] F-5 for 1 sec. to
delete the folder.
• Push and hold [MAKE] F-6 for 1 sec. to making
a new folder. (Edit the name with the same manner as the “• File name” above.)
When a PC keyboard is connected to [USB] connector on the front panel, the file name can also be
edited from the keyboard.
c Push [DIR/FILE] F-1 twice to select the file
name.
r Push [SAVE] F-6 .
• After saving is completed, returns to RTTY decode second menu automatically.
✔ For your convenience!
Two formats, Text and HTML, are available for storage
of data to your PC.
4-20
RECEIVE AND TRANSMIT
■ Operating PSK
A high-quality DSP-based PSK31 encoder/decoder is
built-in to the IC-7700. When connecting a PC keyboard (p. 2-6), PSK31 operation can be performed
without PSK software installed on your PC.
If desired, you can also use your PSK software; consult the manual that comes with the software.
[TX] indicator [RX] indicator
q Push a band key to select the desired band.
w Push RTTY/PSK to select PSK.
Band keys
• After PSK mode is selected, push and hold RTTY/PSK
for 1 sec. to toggle between PSK and PSK-R modes.
• “PSK” or “PSK-R” appears.
e Push [DECODE] F-3 to display the decode screen.
• The IC-7700 has a built-in PSK31 decoder.
r Tune to the desired signal with the main dial.
[AF]
RTTY/PSK
DECODE
• The signal is properly tuned when the radiated lines in
the vector tuning indicator narrow, as show in the example below.
• The radiated lines in the vector tuning indicator may be
displayed sporadically.
• When a PSK signal is received, the water-fall display is
activated.
• The water-fall display shows the signal condition within
the passband and a vertical line appears when a PSK
signal is received.
Main dial
F-3
Appears
t Press [F12] of the connected keyboard to transmit.
• [TX] indicator lights red.
y Type from the connected keyboard to enter the
message that you want to transmit.
• The typewritten contents are indicated in the TX buffer
screen and transmitted immediately.
• The text color will be changed when transmitted.
• Press one of [F1]–[F8] to transmit the TX memory contents.
u Press [F12] of the keyboard to return to receive.
✔ For your convenience
The transmission contents can be typed before being
transmitted.
TX buffer screen
FFT scope
RX contents screen
q Perform the steps q to r above.
w Type from the connected keyboard to enter the
message that you want to transmit.
Water-fall
Vector tuning indicator
• The message is shown in the TX buffer screen.
e Press [F12] of the connected keyboard to transmit
the message.
• The color of displayed text, in the TX buffer screen, will
be changed when transmitted.
• To cancel the transmission, press [F12] twice.
• Vector tuning indicator indication example
Tuned BPSK signal
Tuned QPSK signal
r Press [F12] of the keyboard to return to receive.
BPSK/QPSK idle signal
Unmodulated signal
4-21
4
RECEIVE AND TRANSMIT
D Convenient functions for receive
• Preamp (p. 5-9)
➥ Push [P.AMP] (MF3) several times to set the preamp OFF, preamp 1 ON or preamp 2 ON.
• Twin PBT (passband tuning) (p. 5-12)
➥ Rotate [TWIN PBT] controls (inner/outer).
• PBT indicator (above PBT-CLR switch) lights when
PBT is in use.
• Push and hold PBT-CLR for 1 sec. to clear the settings.
• “P.AMP1” or “P.AMP2” appears when the preamp 1 or
preamp 2 is ON.
• Attenuator (p. 5-9)
➥ Push [ATT] (MF4) several times to set the attenuator in 6 dB steps.
• AGC (auto gain control) (p. 5-11)
➥ Push [AGC] switch several times to select
AGC FAST, AGC MID or AGC SLOW.
➥ Push AGC VR to turn the AGC time constant
manual setting ON and OFF.
• Push and hold [ATT] (MF4) for 1 sec. to turn the attenuator function OFF.
• “ATT” and attenuation level appear when the attenuator is ON.
• Rotate [AGC] control to adjust the time constant.
• Noise blanker (p. 5-16)
➥ Push NB to turn the noise blanker ON and
OFF, and then rotate [NB] control to adjust the
threshold level.
• Manual notch filter (p. 5-18)
➥ Push NOTCH to turn the manual notch function
ON and OFF.
• Rotate [NOTCH] control to set the attenuating frequency.
• Notch indicator (above NOTCH switch) lights when
the manual notch is ON.
• Noise blanker indicator (above NB switch) lights
when the noise blanker is ON.
• Push and hold NB for 1 sec. to enter noise blanker
set mode.
• Fine tuning (p. 3-7)
➥ During PSK, make sure that the kHz tuning step
function is OFF (no “Z” indication), push and hold
[TS] for 1 sec.
• Noise reduction (p. 5-17)
➥ Push NR to turn the noise reduction ON and
OFF.
• Rotate [NR] control to adjust the noise reduction
level.
• Noise reduction indicator (above NR switch) lights
when the noise reduction is ON.
• PSK may not be decoded correctly using the 10 Hz
step tuning.
• 1⁄4 function (p. 3-6)
➥ Push [1/4] to turn the 1⁄4 function ON and OFF.
D About BPSK and QPSK modes
F-1
B/QPSK
F-2
BPSK and QPSK modes are available for PSK31.
• BPSK (Binary Phase Shift Keying) mode is the most
commonly used mode.
• QPSK (Quadrature Phase Shift Keying) mode has
error correction capability to provide better decoding
than BPSK mode in marginal condition. However,
more accurate tuning is required with QPSK mode,
due to the tight phase margin of QPSK.
DECODE
F-3
q During PSK mode selection, push [DECODE] F-3
to display the PSK decode screen.
w Push [] F-1 to select PSK decode second menu.
e Push [B/QPSK] F-2 to toggle between BPSK and
QPSK mode alternately.
• PSK decode screen— BPSK mode
• PSK decode screen— QPSK mode
4-22
RECEIVE AND TRANSMIT
D Functions for the PSK decoder indication
AFC/NET
F-3
q Push a band key to select the desired band.
w Push RTTY/PSK to select PSK.
WIDE
F-7
• After PSK mode is selected, push and hold RTTY/PSK
for 1 sec. to toggle between PSK and PSK-R modes.
• “PSK” or “PSK-R” appears.
e Push [DECODE] F-3 to display the decode screen.
• When tuned into a PSK signal, decoded characters are
displayed in the RX contents screen.
r Push [HOLD/CLR] F-2 to freeze the current screen.
HOLD/CLR
F-2
RTTY/PSK
• “ HOLD ” appears while the function is in use.
• Push [HOLD/CLR] F-2 again to release the function.
EXIT/SET
t Push and hold [HOLD/CLR] F-2 for 1 sec. to clear
the displayed characters.
• “ HOLD ” indicator disappears at the same time when the
hold function is in use.
y Push [AFC/NET] F-3 to turn the AFC function ON.
• “ AFC ” appears.
• If a PSK signal is received within the AFC tuning range,
the decoder automatically tunes into the signal and the
offset frequency is displayed.
• The AFC tuning range is set to ±15 Hz as the default.
Optional ±8 Hz setting is available in PSK decode set
mode. (p. 4-26)
• AFC/NET indications
NOTE: The AFC function may not tune the signal
properly when a weak PSK signal is received.
u Push [AFC/NET] F-3 again to turn the NET function ON.
• “ NET ” appears additionally.
i Push and hold [AFC/NET] F-3 for 1 sec. to add
the offset frequency to the displayed frequency.
o Push [WIDE] F-7 to toggle the PSK decode
screen size from normal and wide.
“AFC” and “NET” indicators
• S/RF meter type during wide screen indication can be
selected in display set mode. (pgs. 3-11, 12-10)
Offset frequency
!0 Push EXIT/SET to close the PSK decode screen.
D Setting the decoder threshold level
Adjust the PSK decoder threshold level if some characters are displayed when no signal is received.
q Call up the PSK decode screen as described
above.
w Push [ADJ] F-5 to select the threshold level setting condition.
e Rotate the main dial to adjust the PSK decoder
threshold level.
• Push and hold [DEF] F-6 for 1 sec. to select the default setting.
r Push [ADJ] F-5 to exit from the threshold level setting condition.
4-23
4
RECEIVE AND TRANSMIT
D PSK memory transmission
Pre-set characters can be sent using the PSK memory. Contents of the memory are set using the edit
menu.
q During PSK mode operation, push [DECODE] F-3
to select PSK decode screen.
w Push [TX MEM] F-4 to select PSK memory screen.
e Push [1–4/5–8] F-7 to select memory bank then
push one of the function keys ([PT1] F-1 to
[PT4] F-4 or [PT5] F-1 to [PT8] F-4 ).
PT1
F-1
–
PT4
F-4
or
PT5
F-1
–
PT8
F-4
EXIT/SET
• When no keyboard is connected, the selected memory
contents will be transmitted immediately.
• When a keyboard is connected, the memory contents
will be transmitted immediately when function key is
pushed, or transmitted after [F12] on the connected keyboard is pressed, depending on auto transmission/reception setting (see below).
• The transmission date, time, reception date and/or time
may be displayed in RX contents screen, depending on
setting.
1–4/5–8
F-7
D Automatic transmission/reception setting
q During PSK mode operation, push [DECODE] F-3
to select PSK decode screen.
w Push [TX MEM] F-4 to select PSK memory screen,
then push [EDIT] F-6 to select PSK memory edit
screen.
• PSK memory contents of Channel 1 (PT1) is selected.
AUTO TX
F-6
EXIT/SET
e Push [PT1..PT8] F-7 several times to select the
desired RTTY memory.
r Push [AUTO TX] F-6 several times to select the
desired condition, as follows.
• AUTO TX/RX : Automatically transmits the selected memory and returns to receive after the transmission.
• AUTO TX
: Automatically transmits the selected memory. To return to receive, press [F12] on the keyboard.
• AUTO RX
: Press [F12] on the keyboard to
transmit the selected memory. Automatically returns to receive after
the transmission.
• No indication : Press [F12] on the keyboard to
transmit the selected memory and
press [F12] again to return to receive.
t Push EXIT/SET to return to exit from PSK memory
edit condition.
PT1..PT8
F-7
NOTE: The transceiver always functions in the
“AUTO TX/RX” setting when no keyboard is connected.
4-24
RECEIVE AND TRANSMIT
D Editing PSK memory
The contents of the PSK memories can be set using
the memory edit menu. The memory can store 8 PSK
messages for often-used PSK information. Total
capacity of the memory is 70 characters per memory
channel.
123
/ Symbol
ABC
/ abc
DEL
SPACE
F-3
F-4
• Programming contents
q During PSK mode operation, push [DECODE] F-3
to select PSK decode screen.
w Push [TX MEM] F-4 to select PSK memory
screen, then push [EDIT] F-6 to select PSK memory edit screen.
• PSK memory contents of the Channel 1 (PT1) is selected.
Ω
≈
Ω≈
F-1
F-2
F-5
EXIT/SET
e Push [PT1..PT8] F-7 several times to select the
desired PSK memory channel to be edited.
r Push [Ω ≈] F-5 to select the edit item between
memory contents and memory name.
t Push [ABC] (MF6), [abc] (MF6), [123] (MF7) or [Symbol] (MF7) to select the character group, then rotate
the main dial to select the character, or push the
keypad for number input.
PT1..PT8
F-7
• PSK memory edit screen
• [abc] (MF6) appears when [ABC] (MF6) is pushed when
“ABC” character group is selected, and [Symbol] (MF7)
appears when [123] (MF7) is pushed when “123” character group is selected.
• Selectable characters (with the main dial);
• Pre-programmed contents
CH
Name
Contents
PT1
MYCALLx2 ¿DE Icom Icom K¿
PT2
MYCALLx3 ¿DE Icom Icom Icom K¿
PT3
QSLUR599 ¿QSL UR 599 599 BK¿
PT4
DE+UR599 ¿QSL DE Icom Icom UR 599 599
BK¿
PT5
PT6
PT7
PT8
73 GL SK
EQUIP.
Editable characters
ABC
A to Z (capital letters)
abc
a to z (small letters)
123
0 to 9 (numbers)
¿73 GL SK¿
CQ CQ CQ ¿CQ CQ CQ DE Icom Icom Icom
K¿
RIG&ANT
Key selection
Symbol
¿My transceiver is IC–7700 &
Antenna is a 3–element triband
yagi.¿
!#$%&¥?“‘`^+–✱/.,:;=
<>()[]{}|_~@¿
(“¿” is for the memory contents setting only.)
✔ For your convenience
When a PC keyboard is connected to [USB] connector on the front panel, the PSK memory contents
can also be edited from the keyboard.
¿My PSK equipment is internal
modulator & demodulator of the
IC–7700.¿
y Push [Ω] F-1 or [≈] F-2 to move the cursor
backwards or forwards, respectively.
• Pushing [DEL] F-3 deletes a character and [SPACE]
F-4 inserts a space.
u Repeat steps t and y to input the desired characters.
i Push EXIT/SET to set the contents and exit PSK
memory edit screen.
4-25
4
RECEIVE AND TRANSMIT
D PSK decode set mode
This set mode is used to set the decode USOS function, time stamp setting, etc.
Ω≈
WIDE
F-3
F-7
• Setting contents
q During PSK mode operation, push [DECODE] F-3
to select PSK decode screen.
w Push [] F-1 to select PSK decode second menu, then push [SET] F-6 to select PSK decode set mode.
• Push [WIDE] F-7 to toggle the screen size from normal
and wide.
e Push [Y] F-1 or [Z] F-2 to select the desired set
item.
r Set the desired condition using the main dial.
∫
√
F-1
F-2
DEF
F-4
EXIT/SET
• Push and hold [DEF] F-4 for 1 sec. to select a default
condition or value.
• Push [Ω ≈] F-3 to select the set contents for some
items.
Main dial
t Push EXIT/SET to exit from set mode.
PSK FFT Scope Averaging
OFF
Select the FFT scope waveform averaging function
from 2 to 4 and OFF. (default: OFF)
Recommendation!
If you use the FFT scope waveform for tuning, using
the default or smaller number setting is recommended.
PSK FFT Scope Waveform Color
51
153
255
Set the color for the FFT scope waveform.
• Push [Ω ≈] F-3 to select R (Red), G (Green) and B (Blue),
and then rotate the main dial to set the ratio from 0 to 255.
• The color is set in RGB format.
• The set color is indicated in the box beside the RGB scale.
±15Hz
PSK AFC Range
Select the AFC (Automatic Frequency Control) function operating range from ±15 Hz (default) and ±8 Hz.
NOTE: The AFC function may not tune the signal
properly when a weak PSK signal is received.
PSK Time Stamp
ON
Turn the time stamp (date, transmission or reception
time) display ON and OFF.
• ON : Displays the time stamp.
• OFF : No time stamp display.
PSK Time Stamp (Time)
Local
Selects the clock display for time stamp usage.
• Local : Selects the time that set in “Time (Now).”
• UTC* : Selects the time that set in “CLOCK2.”
NOTE: The time won’t be displayed when “OFF” is
selected in “PSK Time Stamp” as above.
*The name of choice may differ according to
“CLOCK2 Name” setting (p. 11-2). “UTC” is the
default name of CLOCK2.
4-26
RECEIVE AND TRANSMIT
D PSK decode set mode (continued)
PSK Time Stamp (Frequency)
OFF
Selects the operating frequency display for time
stamp usage.
• ON : Displays the operating frequency.
• OFF : No operating frequency display.
NOTE: The frequency won’t be displayed when
“OFF” is selected in “PSK Time Stamp” as
below left.
PSK Font Color (Receive)
128
255
128
Set the text color for received characters.
• Push [Ω ≈] F-3 to select R (Red), G (Green) and B (Blue),
and then rotate the main dial to set the ratio from 0 to 255.
• The color is set in RGB format.
• The set color is indicated in the box beside the RGB scale.
PSK Font Color (Transmit)
255
106
106
Set the text color for transmitted characters.
• Push [Ω ≈] F-3 to select R (Red), G (Green) and B (Blue),
and then rotate the main dial to set the ratio from 0 to 255.
• The color is set in RGB format.
• The set color is indicated in the box beside the RGB scale.
PSK Font Color (Time Stamp)
155
189
Set the text color for time stamp indication.
• Push [Ω ≈] F-3 to select R (Red), G (Green) and B (Blue),
and then rotate the main dial to set the ratio from 0 to 255.
• The color is set in RGB format.
• The set color is indicated in the box beside the RGB scale.
PSK Font Color (TX Buffer)
255
255
255
Set the text color in the TX buffer screen.
• Push [Ω ≈] F-3 to select R (Red), G (Green) and B (Blue),
and then rotate the main dial to set the ratio from 0 to 255.
• The color is set in RGB format.
• The set color is indicated in the box beside the RGB scale.
4-27
4
RECEIVE AND TRANSMIT
D Data saving
The contents of the PSK memory and received signal
can be saved into the USB-Memory.
The USB-Memory is not supplied by Icom.
OPTION
SAVE
WIDE
F-5
F-6
F-7
DIR/FILE
EDIT
F-1
F-4
EXIT/SET
q During PSK decode screen indication, push
[] F-1 to select PSK decode second
menu.
w Push [SAVE] F-5 to select decode file save screen.
e Change the following conditions if desired.
• File name:
z Push [EDIT] F-4 to select file name edit condition.
• Push [DIR/FILE] F-1 several times to select the
file name, if necessary.
x Push [ABC] (MF6), [123] (MF7) or [Symbol]
(MF7) to select the character group, then ro-
Main dial
tate the main dial to select the character.
• Decode file save screen
• [ABC] (MF6) : A to Z (capital letters); [123] (MF7): 0
to 9 (numerals); [Symbol] (MF7): ! # $ % & ‘ ` ^ + –
= ( ) [ ] { } _ ~ @ can be selected.
• Push [Ω] F-1 to move the cursor left, push [≈] F-2
to move the cursor right, [DEL] F-3 delete a character and push [SPACE] F-4 to insert a space.
c Push EXIT/SET to set the file name.
• File format
z Push [OPTION] F-5 to enter save option
screen.
x Rotate the main dial to select the saving format from Text and HTML.
• Decode file save screen— file name edit
• “Text” is the default setting.
• Push and hold [DEF] F-4 for 1 sec. to select the
default setting.
• Save option screen
c Push EXIT/SET to return to the previous indication.
• Saving location
z Push [DIR/FILE] F-1 to select tree view
screen.
x Select the desired directory or folder in the
USB-Memory.
• Push [Ω ≈] F-4 to select the upper directory.
• Push [Y] F-2 or [Z] F-3 to select folder in the
same directory.
• Push and hold [Ω ≈] F-4 for 1 sec. to select a
folder in the directory.
• Push [REN/DEL] F-5 to rename the folder.
• Push and hold [REN/DEL] F-5 for 1 sec. to
delete the folder.
• Push and hold [MAKE] F-6 for 1 sec. to make a
new folder. (Edit the name with the same manner
as the “• File name” above.)
c Push [DIR/FILE] F-1 twice to select the file
name.
r Push [SAVE] F-6 .
• After saving is completed, return to PSK decode second
menu automatically.
✔ For your convenience!
Two data formats, Text and HTML, are available for
PC data storage.
4-28
RECEIVE AND TRANSMIT
■ Operating AM
[MIC]
q Push a band key to select the desired band.
w Push AM/FM to select AM.
[TX] indicator [RX] indicator Band keys
• “AM” indicator appears.
• After AM mode is selected, push AM/FM to toggle between AM and FM modes.
e Rotate the main dial to tune to the desired frequency.
• The S-meter indicates received signal strength when
signal is received.
[AF]
AM/FM
r Rotate [AF] to set audio to a comfortable listening
level.
t Push TRANSMIT or [PTT] (microphone) to transmit.
Main dial
Appears
• The TX indicator lights red.
y Speak into the microphone at your normal voice
level.
• Adjust the microphone gain with [MIC] at this step, if
necessary.
u Push TRANSMIT or release [PTT] (microphone) to
return to receive.
D Convenient functions for receive
• Twin PBT (passband tuning) (p. 5-12)
➥ Rotate [TWIN PBT] controls (inner/outer).
• Preamp (p. 5-9)
➥ Push [P.AMP] (MF3) several times to set the preamp OFF, preamp 1 ON or preamp 2 ON.
• PBT indicator (above PBT-CLR switch) lights when
PBT is in use.
• Push and hold PBT-CLR for 1 sec. to clear the settings.
• “P.AMP1” or “P.AMP2” appears when the preamp 1 or
preamp 2 is ON.
• Attenuator (p. 5-9)
➥ Push [ATT] (MF4) several times to set the attenuator in 6 dB steps.
• Notch filter (p. 5-18)
➥ Push NOTCH to turn the manual notch function
ON and OFF.
• Push and hold [ATT] (MF3) for 1 sec. to turn the attenuator function OFF.
• “ATT” and attenuation level appear when the attenuator is ON.
• Rotate [NOTCH] control to set the attenuating frequency.
• Notch indicator (above NOTCH switch) lights when
either the auto or manual notch is ON.
• Noise blanker (p. 5-16)
➥ Push NB to turn the noise blanker ON and
OFF, and then rotate [NB] control to adjust the
threshold level.
• AGC (auto gain control) (p. 5-11)
➥ Push [AGC] switch several times to select
AGC FAST, AGC MID or AGC SLOW.
➥ Push AGC VR to turn the AGC time constant
manual setting ON and OFF.
• Noise blanker indicator (above NB switch) lights
when the noise blanker is ON.
• Push and hold NB for 1 sec. to enter noise blanker
set mode.
• Rotate [AGC] control to adjust the time constant.
• Auto tuning function (p. 5-19)
➥ Push [AUTOTUNE] to turn the auto tuning function ON and OFF.
• Noise reduction (p. 5-17)
➥ Push NR to turn the noise reduction ON and
OFF.
• The transceiver automatically tunes the desired signal within ±5 kHz range.
• Rotate [NR] control to adjust the noise reduction
level.
• Noise reduction indicator (above NR switch) lights
when the noise reduction is ON.
IMPORTANT!
When receiving a weak signal, or receiving a signal
with interference, the automatic tuning function may
not tune, or may tune to an undesired signal.
• Audio tone control (p. 12-4)
➥ Push [SET] F-7 then [LEVEL] F-1 to enter level
set mode. Select an item with [Y] F-1 /[Z] F-2
then rotate the main dial to adjust the audio tone.
4-29
4
RECEIVE AND TRANSMIT
D Convenient functions for transmit
• VOX (voice operated transmit) (p. 6-2)
➥ Push VOX to turn the VOX function ON and
OFF.
•“
VOX
• Audio tone control (p. 12-5)
➥ Push [SET] F-7 then [LEVEL] F-1 to enter level
set mode. Select an item with [Y] F-1 /[Z] F-2
then rotate the main dial to adjust the audio tone.
” appears when the VOX function is ON.
• Transmit quality monitor (p. 6-4)
➥ Push MONITOR to turn the monitor function ON
and OFF.
• Rotate [MONI GAIN] to adjust the monitor gain.
• Monitor indicator (above MONITOR switch) lights
when the monitor function is ON.
4-30
RECEIVE AND TRANSMIT
■ Operating FM
[MIC]
q Push a band key to select the desired band.
w Push AM/FM to select FM.
[TX] indicator [RX] indicator Band keys
• “FM” indicator appears.
• After FM mode is selected, push AM/FM to toggle between FM and AM modes.
e Rotate the main dial to tune to the desired frequency.
[AF]
AM/FM
Main dial
• The S-meter indicates received signal strength when
signal is received.
• 10 kHz tuning step is preset for the FM mode.
• Push FILTER several times to select the desired filter
width.
FILTER
r Rotate [AF] to set audio to a comfortable listening
level.
t Push TRANSMIT or [PTT] (microphone) to transmit.
Appears
• The TX indicator lights red.
y Speak into the microphone at your normal voice
level.
• Adjust the microphone gain with [MIC] at this step, if
necessary.
• FM narrow transmission is available when “FIL2” or
“FIL3” is selected.
u Push TRANSMIT or release [PTT] (microphone) to
return to receive.
D Convenient functions for receive
• Preamp (p. 5-9)
➥ Push [P.AMP] (MF3) several times to set the preamp OFF, preamp 1 ON or preamp 2 ON.
• Attenuator (p. 5-9)
➥ Push [ATT] (MF4) several times to set the attenuator in 6 dB steps.
• “P.AMP1” or “P.AMP2” appears when the preamp 1 or
preamp 2 is ON.
• Push and hold [ATT] (MF4) for 1 sec. to turn the attenuator function OFF.
• “ATT” and attenuation level appear when the attenuator is ON.
• Auto notch filter (p. 5-18)
➥ Push NOTCH to turn the auto notch function
ON and OFF.
• Audio tone control (p. 12-4)
➥ Push [SET] F-7 then [LEVEL] F-1 to enter level
set mode. Select an item with [Y] F-1 /[Z] F-2
then rotate the main dial to adjust the audio tone.
• Notch indicator (above NOTCH switch) lights when
the auto notch is ON.
D Convenient functions for transmit
• VOX (voice operated transmit) (p. 6-2)
➥ Push VOX to turn the VOX function ON and
OFF.
•“
VOX
• Audio tone control (p. 12-5)
➥ Push [SET] F-7 then [LEVEL] F-1 to enter level
set mode. Select an item with [Y] F-1 /[Z] F-2
then rotate the main dial to adjust the audio tone.
” appears when the VOX function is ON.
• Transmit quality monitor (p. 6-4)
➥ Push MONITOR to turn the monitor function ON
and OFF.
• Rotate [MONI GAIN] to adjust the monitor gain.
• Monitor indicator (above MONITOR switch) lights
when the monitor function is ON.
4-31
4
RECEIVE AND TRANSMIT
■ Repeater operation
A repeater amplifies received signals and retransmits
them at a different frequency. When using a repeater,
the transmit frequency is shifted from the receive frequency by an offset frequency. A repeater can be accessed using split frequency operation with the shift
frequency set to the repeater’s receive frequency.
For accessing a repeater which requires a repeater
tone, set the repeater tone frequency in tone frequency set mode as described below.
[SPLIT] indicator Band keys
V/M
[XFC] Main dial
SPLIT
AM/FM
q Set the offset frequencies (HF, 50 MHz) and turn
ON the quick split function in Others set mode in advance. (pgs. 12-12, 12-13)
w Push V/M to select VFO mode.
e Push the desired band key.
r Push AM/FM several times to select FM mode.
t Set the receive frequency (repeater output frequency).
y Push and hold SPLIT for 1 sec. to start repeater
operation.
• Repeater tone is turned ON automatically.
• [SPLIT] indicator lights and “ SPLIT ” appears on the
LCD.
• Shifted transmit frequency and “TX” appear in the sub
band.
• The transmit frequency can be monitored while pushing
[XFC].
u Push and hold [PTT] to transmit; release [PTT] to
receive.
i To return to simplex, push SPLIT momentarily.
4-32
RECEIVE AND TRANSMIT
D Repeater tone frequency setting
Some repeaters require subaudible tones to be accessed. Subaudible tones are superimposed on your
normal signal and must be set in advance. The transceiver has 50 tones from 67.0 Hz to 254.1 Hz.
TONE
q Select FM mode.
w Push and hold [TONE] (MF6) for 1 sec. to tone frequency set mode.
e Push [Y] F-1 or [Z] F-2 to select REPEATER
TONE item.
r Rotate the main dial to select the desired repeater
tone frequency.
DEF
F-4
• Push and hold [DEF] F-4 for 1 sec. to select the default setting.
t Push EXIT/SET to return to the previous indication.
∫
√
F-1
F-2
AM/FM
Main dial
• Available tone frequencies
67.0
69.3
71.9
74.4
77.0
79.7
82.5
4-33
085.4
088.5
091.5
094.8
097.4
100.0
103.5
107.2
110.9
114.8
118.8
123.0
127.3
131.8
136.5
141.3
146.2
151.4
156.7
159.8
162.2
165.5
167.9
171.3
173.8
177.3
179.9
183.5
(unit: Hz)
186.2
189.9
192.8
196.6
199.5
203.5
206.5
210.7 254.1
218.1
225.7
229.1
233.6
241.8
250.3
4
RECEIVE AND TRANSMIT
■ Tone squelch operation
The tone squelch opens only when receiving a signal
containing a matching subaudible tone. You can
silently wait for calls from group members using the
same tone.
TONE
q Set the desired frequency band and select FM
mode.
w Push [TONE] (MF6) to turn the tone squelch function ON.
DEF
F-4
•“
∫
√
F-1
F-2
AM/FM
TSQL
” appears
e Push and hold [TONE] (MF6) for 1 sec. to tone frequency set mode.
r Push [Y] F-1 or [Z] F-2 to select T-SQL TONE
item.
t Rotate the main dial to select the desired tone
squelch frequency.
Main dial
• Push and hold [DEF] F-4 for 1 sec. to select the default setting.
y Push EXIT/SET to return to the previous indication.
u When the received signal includes a matching tone,
squelch opens and the signal can be heard.
• When the received signal’s tone does not match, tone
squelch does not open. However, the S-indicator shows
signal strength.
• To open the squelch manually, push [XFC].
i Operate the transceiver in the normal way.
o To cancel the tone squelch, push [TONE] (MF6) to
clear “TSQL.”
• Available tone frequencies
67.0
69.3
71.9
74.4
77.0
79.7
82.5
4-34
085.4
088.5
091.5
094.8
097.4
100.0
103.5
107.2
110.9
114.8
118.8
123.0
127.3
131.8
136.5
141.3
146.2
151.4
156.7
159.8
162.2
165.5
167.9
171.3
173.8
177.3
179.9
183.5
(unit: Hz)
186.2
189.9
192.8
196.6
199.5
203.5
206.5
210.7 254.1
218.1
225.7
229.1
233.6
241.8
250.3
RECEIVE AND TRANSMIT
■ Data mode (AFSK) operation
When operating AMTOR or PACKET with your TNC
and/or PC software, consult the manual that comes
with the TNC and/or the software.
q Connect a PC and TNC to the transceiver. (p. 2-9)
w Push a band key to select the desired band.
e Push SSB or AM/FM to select the desired operating mode.
r Push DATA to turn data mode ON.
Band keys
• One of “-D1,” “-D2” or “-D3” is additionally appears.
• During data mode selection, push and hold DATA for
1 sec. to select data mode 1 (D1), 2 (D2) and 3 (D3) in
sequence.
[AF]
SSB
DATA
AM/FM
t Rotate the main dial to tune to the desired signal
and decode it correctly.
Main dial
• Also use the tuning indicator of the TNC or software.
• During SSB data mode, 1⁄4 tuning function can be used
for critical tuning.
Appears
y Operate the PC (software) or TNC to transmit.
• When operating in SSB data mode, adjust the TNC output level so that the ALC meter reading doesn’t go outside the ALC zone.
NOTE: When SSB data mode is selected, the audio
input from the [ACC1 (pin 6)] is used for transmission instead of [MIC]’s. (Modulation input connector can
be changed in ACC set mode. (pgs. 12-7, 12-8))
The fixed condition is used for SSB data transmission as follows:
• [COMP]
: OFF
• Tx bandwidth
: MID
• Tx Tone (Bass) : 0
• Tx Tone (Trebles): 0
• Tone-pair example
✔ For your information
Carrier frequency is displayed when SSB data mode
is selected.
2325 Hz
200 Hz
2125 Hz
See the diagram left for the tone-pair example.
Carrier frequency
(displayed frequency)
4-35
FUNCTIONS FOR RECEIVE
Section
■ Spectrum scope screen ……………………………………………… 5-2
D Center mode ………………………………………………………… 5-2
D Fixed 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
D DSP filter shape …………………………………………………… 5-14
D Filter shape set mode ……………………………………………… 5-14
■ Noise blanker ………………………………………………………… 5-16
D NB set mode ………………………………………………………… 5-16
■ Noise reduction ………………………………………………………… 5-17
■ Dial lock function ……………………………………………………… 5-17
■ Notch function ………………………………………………………… 5-18
■ Digital selector ………………………………………………………… 5-18
■ Autotune function ……………………………………………………… 5-19
5-1
5
FUNCTIONS FOR RECEIVE
■ Spectrum scope screen
This DSP-based spectrum scope allows you to display
the conditions on the selected band, as well as relative
strengths of signals. The IC-7700 has two modes for
the spectrum indication— one is center mode, and anther one is fixed mode.
In addition, the IC-7700 has a mini scope screen to
save screen space.
D Center mode
Displays signals around the set frequency within the
selected span. The set frequency is always displayed
at the center of the screen.
MARKER
HOLD
CENT/FIX
F-3
F-4
F-5
q Push EXIT/SET several times to close a multi-function screen, if necessary.
w Push [SCOPE] F-1 to select the scope screen.
e Push [CENT/FIX] F-5 to select the center mode.
• “ CENTER ” is displayed when center mode is selected.
r Push [SPAN]
scope span.
SPAN
ATT
F-1
F-2
F-1
several times to select the
• ±2.5, ±5.0, ±10, ±25, ±50, ±100 and ±250 kHz are available.
• Push and hold [F-1•SPAN] for 1 sec. to return to ±2.5
kHz span.
• Sweeping speed is selectable for each span independently in scope set mode. (pgs. 5-5, 5-6)
EXIT/SET
t Push [ATT] F-2 several times to activate an attenuator or turn the attenuator OFF.
• 10, 20 and 30 dB attenuators are available.
• Push and hold [ATT] F-2 for 1 sec. to turn OFF the attenuator.
y Push [MARKER] F-3 to turn the marker for transmit frequency ON or OFF.
• “ T ” displays the marker at the transmit frequency.
• “<<” or “>>” appears when the marker is out of range.
• The spectrum scope shows the transmit signal waveform while transmitting. This can be deactivated in
scope set mode. (p. 5-5)
• The spectrum scope shows the peak level holding function. Peak levels are displayed in the background of the
current spectrum in a different color until the receive frequency changes. This can be deactivated and the waveform color can be set in scope set mode. (p. 5-5)
• Observed indication example
u Push [HOLD] F-4 to freeze the current spectrum
waveform.
• “ HOLD ” appears while the function is in use.
• The peak hold function can be deactivated in scope set
mode.
i Push EXIT/SET to exit the scope screen.
NOTE: If a strong signal is received, a ghost waveform may appear. Push [ATT] F-2 several times to
activate the spectrum scope attenuator in this case.
Spurious signal waveforms may be displayed. They
are generated in the internal scope circuit and do
not indicate a transceiver malfunction.
5-2
FUNCTIONS FOR RECEIVE
D Fixed mode
Displays signals within the specified frequency range.
The selected frequency band conditions can be observed at a glance when using this mode.
MARKER
HOLD
CENT/FIX
F-3
F-4
F-5
q Push EXIT/SET several times to close a multi-function screen, if necessary.
w Push [SCOPE] F-1 to select the scope screen.
e Push [CENT/FIX] F-5 to select the fixed mode.
•“
FIX
” is displayed when fixed mode is selected.
r Push [ATT] F-2 several times to activate an attenuator or turn the attenuator OFF.
• 10, 20 and 30 dB attenuators are available.
• Push and hold [ATT] F-2 for 1 sec. to turn OFF the attenuator.
ATT
t Push [MARKER] F-3 several times to select the
marker for transmit frequency or turn the marker
OFF.
EXIT/SET
F-2
• “ R ” displays the marker at the receive frequency. (always displayed)
• “ T ” displays the marker at the transmit frequency.
• “<<” or “>>” appears when the marker is out of range.
• The spectrum scope shows the transmit signal waveform while transmitting. This can be deactivated in
scope set mode. (p. 5-5)
• The spectrum scope shows the peak level holding function. Peak levels are displayed in the background of the
current spectrum in a different color until the receive frequency changes. This can be deactivated and the waveform color can be set in scope set mode. (p. 5-5)
y Push [HOLD] F-4 to freeze the current spectrum
waveform.
• “ HOLD ” appears while the function is in use.
• The peak hold function can be deactivated in scope set
mode.
u Push EXIT/SET to exit the scope screen.
NOTE: If a strong signal is received, a ghost waveform may appear. Push [ATT] F-2 several times to
activate the spectrum scope attenuator in this case.
The scope bandwidth can be specified for each operating frequency band independently in scope set
mode. (pgs. 5-6 to 5-8)
5-3
5
FUNCTIONS FOR RECEIVE
D Mini scope screen indication
The mini scope screen can be displayed with another
screen display, such as set mode menu, decode
screen, memory list screen, etc. simultaneously.
q Set the scope mode (center or fixed), marker, attenuator, span, etc. in advance. (pgs. 5-2, 5-3)
w Push M.SCOPE to toggle the mini scope indication
ON and OFF.
• The S/RF meter type during mini scope indication can
be selected in display set mode (Meter Type (Wide
Screen) item). (p. 12-10)
M.SCOPE
D Scope set mode
This set mode is used to set the waveform color,
sweeping speed, scope range for fixed mode, etc.
Ω≈
WIDE
F-3
F-7
q During spectrum scope display ON, push
[SET] F-7 to select scope set mode screen.
• Push [WIDE] F-7 to toggle the screen size between
normal and wide.
w Push [Y] F-1 or [Z] F-2 to select the desired set
item.
e Set the desired condition using the main dial.
∫
√
F-1
F-2
DEF
F-4
EXIT/SET
• Push and hold [DEF] F-4 for 1 sec. to select the default condition or value.
• Push [Ω ≈] F-3 to select the set contents for some
items.
Main dial
r Push EXIT/SET to exit from set mode.
5-4
FUNCTIONS FOR RECEIVE
D Scope set mode (continued)
Scope during Tx (CENTER Type)
ON
Turn the transmitting signal waveform indication ON
and OFF.
NOTE: The transmitting signal waveform indication is available for the center mode only.
Max Hold
ON
Turn the peak level holding function ON and OFF.
CENTER Type Display
Filter Center
Select the center frequency of the spectrum scope
indication (center mode only).
• Filter center
: Shows the selected filter’s center
frequency at the center.
• Carrier Point Center
: Shows the selected operating
mode carrier point frequency at
the center.
• Carrier Point Center (Abs. Freq.)
: In addition to the carrier point
center setting above, the actual
frequency is displayed for the
bottom of the scope.
Waveform Color (Current)
Set the waveform color for the currently received signals.
Set the waveform color for the receiving signals maximum level.
102
153
• The color is set in RGB format.
• Push [Ω ≈] F-3 to select R (Red), G (Green) and B
(Blue), and rotate the ratio from 0 to 255 range.
• The set color is indicated in the box beside the RGB
scale.
Sweep Speed (± 2.5k)
MID
Select the sweep speed for the ±2.5 kHz span selection from SLOW, MID and FAST.
NOTE: The waveform may be displayed incorrectly with “FAST” setting.
5k)
MID
Select the sweep speed for the ±5 kHz span selection from SLOW, MID and FAST.
(±
102
• The color is set in RGB format.
• Push [Ω ≈] F-3 to select R (Red), G (Green) and B
(Blue), and rotate the ratio from 0 to 255 range.
• The set color is indicated in the box beside the RGB
scale.
Waveform Color (Max Hold)
(±
204
NOTE: The waveform may be displayed incorrectly with “FAST” setting.
10k)
FAST
Select the sweep speed for the ±10 kHz span selection from SLOW, MID and FAST.
5-5
5
FUNCTIONS FOR RECEIVE
D Scope set mode (continued)
(±
25k)
FAST
Select the sweep speed for the ±25 kHz span selection from SLOW, MID and FAST.
(±
50k)
FAST
Select the sweep speed for the ±50 kHz span selection from SLOW, MID and FAST.
(± 100k)
FAST
Select the sweep speed for the ±100 kHz span selection from SLOW, MID and FAST.
(± 250k)
FAST
Select the sweep speed for the ±250 kHz span selection from SLOW, MID and FAST.
Fixed Edges ( 0.03 –
1.60)
0.750
Set the scope edge frequencies for fixed mode for
bands below 1.6 MHz.
( 1.60 –
2.00)
1.800
–
2.000 MHz
• Set the frequencies within 1.600 to 2.000 MHz
range in 1 kHz steps.
6.00)
3.500
Set the scope edge frequencies for fixed mode scope
when the 2 to 6 MHz band is selected.
( 6.00 –
1.250 MHz
• Set the frequencies within 0.030 to 1.600 MHz
range in 1 kHz steps.
Up to 500 kHz band width can be specified, so
either edge frequency will be set to the difference
between higher and lower frequencies from 5 to
500 kHz automatically while setting another edge
frequency.
Set the scope edge frequencies for fixed mode scope
when the 1.6 to 2 MHz band is selected.
( 2.00 –
–
–
4.000 MHz
• Set the frequencies within 2.000 to 6.000 MHz
range in 1 kHz steps.
Up to 500 kHz band width can be specified, so
either edge frequency will be set to the difference
between higher and lower frequencies from 5 to
500 kHz automatically while setting another edge
frequency.
8.00)
7.000
Set the scope edge frequencies for fixed mode scope
when the 6 to 8 MHz band is selected.
–
7.300 MHz
• Set the frequencies within 6.000 to 8.000 MHz
range in 1 kHz steps.
Up to 500 kHz band width can be specified, so
either edge frequency will be set to the difference
between higher and lower frequencies from 5 to
500 kHz automatically while setting another edge
frequency.
5-6
FUNCTIONS FOR RECEIVE
D Scope set mode (continued)
( 8.00 – 11.00)
10.100
Set the scope edge frequencies for fixed mode scope
when the 8 to 11 MHz band is selected.
–
10.150 MHz
• Set the frequencies within 8.000 to 11.000 MHz
range in 1 kHz steps.
Up to 500 kHz band width can be specified, so
either edge frequency will be set to the difference
between higher and lower frequencies from 5 to
500 kHz automatically while setting another edge
frequency.
(11.00 – 15.00)
14.000
Set the scope edge frequencies for fixed mode scope
when the 11 to 15 MHz band is selected.
–
14.350 MHz
• Set the frequencies within 11.000 to 15.000 MHz
range in 1 kHz steps.
Up to 500 kHz band width can be specified, so
either edge frequency will be set to the difference
between higher and lower frequencies from 5 to
500 kHz automatically while setting another edge
frequency.
(15.00 – 20.00)
18.068
Set the scope edge frequencies for fixed mode scope
when the 15 to 20 MHz band is selected.
–
18.168 MHz
• Set the frequencies within 15.000 to 20.000 MHz
range in 1 kHz steps.
Up to 500 kHz band width can be specified, so
either edge frequency will be set to the difference between higher and lower frequencies from
5 to 500 kHz automatically while setting another
edge frequency.
(20.00 – 22.00)
21.000
Set the scope edge frequencies for fixed mode scope
when the 20 to 22 MHz band is selected.
–
21.450 MHz
• Set the frequencies within 20.000 to 22.000 MHz
range in 1 kHz steps.
Up to 500 kHz band width can be specified, so
either edge frequency will be set to the difference
between higher and lower frequencies become 5
to 500 kHz automatically while setting another
edge frequency.
(22.00 – 26.00)
24.890
Set the scope edge frequencies for fixed mode scope
when the 22 to 26 MHz band is selected.
–
24.990 MHz
• Set the frequencies within 22.000 to 26.000 MHz
range in 1 kHz steps.
Up to 500 kHz band width can be specified, so
either edge frequency will be set to the difference
between higher and lower frequencies from 5 to
500 kHz automatically while setting another edge
frequency.
5-7
5
FUNCTIONS FOR RECEIVE
D Scope set mode (continued)
(26.00 – 30.00)
28.000
Set the scope edge frequencies for fixed mode scope
when the 26 to 30 MHz band is selected.
–
28.500 MHz
• Set the frequencies within 26.000 to 30.000 MHz
range in 1 kHz steps.
Up to 500 kHz band width can be specified, so
either edge frequency will be set to the difference
between higher and lower frequencies from 5 to
500 kHz automatically while setting another edge
frequency.
(30.00 – 45.00)
30.000
Set the scope edge frequencies for fixed mode scope
when the 30 to 45 MHz band is selected.
–
30.500 MHz
• Set the frequencies within 30.000 to 45.000 MHz
range in 1 kHz steps.
Up to 500 kHz band width can be specified, so
either edge frequency will be set to the difference
between higher and lower frequencies from 5 to
500 kHz automatically while setting another edge
frequency.
(45.00 – 60.00)
50.000
Set the scope edge frequencies for fixed mode scope
when the 45 to 60 MHz band is selected.
–
50.500 MHz
• Set the frequencies within 45.000 to 60.000 MHz
range in 1 kHz steps.
Up to 500 kHz band width can be specified, so
either edge frequency will be set to the difference
between higher and lower frequencies from 5 to
500 kHz automatically while setting another edge
frequency.
5-8
FUNCTIONS FOR RECEIVE
■ Preamplifier
The preamp amplifies received signals in the receiver
front end, to improve the S/N ratio and sensitivity. Set
this to preamp 1 or preamp 2 when receiving weak signals.
➥ Push [P.AMP] (MF3) several times to set the preamp
OFF, preamp 1 ON or preamp 2 ON.
P.AMP
P.AMP
P.AMP
For all HF bands
High-gain preamp for 24 MHz band and
above
✔ About the “P.AMP2”
The “P.AMP 2” is a high gain receive amplifier. When
the “P.AMP 2” is used in the presence of strong electromagnetic fields, distortion sometimes results. In
such cases, use the transceiver with the “P.AMP 1” or
“P.AMP OFF” setting.
The “P.AMP 2” is most effective when:
• Used on bands above 24 MHz and when signals are
weak.
• Receive sensitivity is insufficient when using low-gain
antennas, or while using a narrow band antenna
(such as small loop, a Beverage antenna or a short
Yagi antenna).
■ Attenuator
The attenuator prevents a desired signal from distortion when very strong signals are near the desired frequency or when very strong electromagnetic fields,
such as from broadcasting stations near your location.
➥ Push [ATT] (MF4) several times to set the attenuator
6 dB, 12 dB, 18 dB or attenuator OFF.
➥ Push and hold [ATT] (MF4) for 1 sec. to turn the attenuator function OFF.
ATT
5-9
ATT
6dB
6 dB
attenuation
ATT
12dB
12 dB
attenuation
ATT
18dB
18 dB
attenuation
5
FUNCTIONS FOR RECEIVE
■ RIT function
The RIT (Receive Increment Tuning) function compensates for off-frequency operation of the received
station.
The function shifts the receive frequency up to
±9.99 kHz in 10 Hz steps without moving the transmit
frequency.
q Push
[RIT/∂TX]
RIT
to turn the RIT function ON and OFF.
• “ RIT ” and the shifting frequency appear when the function is ON.
w Rotate the [RIT/∂TX] control.
• Push and hold CLEAR for 1 sec. to reset the RIT frequency.
• Push CLEAR momentarily to reset the RIT frequency
when the quick RIT/∂TX clear function is ON. (p. 12-15)
• Push and hold RIT for 1 sec. to add the shift frequency to the operating frequency.
RIT
CLEAR
D RIT monitor function
When the RIT function is ON, pushing and holding
[XFC] allows you to monitor the operating frequency
directly (RIT is temporarily cancelled).
✔ For your convenience— Calculate function
The shift frequency of the RIT function can be
added/subtracted to the displayed frequency.
➥ While displaying the RIT shift frequency, push and
hold RIT for 1 sec.
XFC
5-10
FUNCTIONS FOR RECEIVE
■ AGC function
The AGC (auto gain control) controls receiver gain to
produce a constant audio output level even when the
received signal strength varies greatly.
The transceiver has 3 preset AGC characteristics (time
constant: fast, mid, slow) for non-FM mode.
[AGC] control
AGC VR
The FM mode AGC time constant is fixed as ‘FAST’
(0.1 sec.) and AGC time constant cannot be
changed.
AGC
D Selecting the preset value
q Select any non-FM mode.
w Push [AGC] (MF5) several times to select AGC fast,
AGC medium (MID) or AGC slow.
• Push and hold
function OFF.
D Adjusting the AGC time constant
AGC VR
for 1 sec. to turn the AGC
q Select any non-FM mode.
w Push AGC VR , then rotate [AGC] control to adjust
the AGC time constant.
• [AGC VR] indicator above the switch lights green.
D Setting the AGC time constant preset value
q Select any non-FM mode.
w Push and hold [AGC] (MF5) for 1 sec. to enter AGC
set mode.
e Push [AGC] (MF5) several times to select FAST time
constant.
r Rotate the main dial to set the desired time constant
for ‘AGC FAST.’
• Selectable AGC time constant
Mode
Default
(unit: sec.)
Selectable AGC time constant
SSB
0.3 (FAST)
0.1, 0.2, 0.3, 0.5, 0.8, 1.2, 1.6, 2.0,
2.0 (MID)
2.5, 3.0, 4.0, 5.0, 6.0
6.0 (SLOW)
CW
0.1 (FAST)
0.1, 0.2, 0.3, 0.5, 0.8, 1.2, 1.6, 2.0,
0.5 (MID)
2.5, 3.0, 4.0, 5.0, 6.0
1.2 (SLOW)
• AGC time constant can be set between 0.1 to 8.0 sec.
(depends on mode) or turned OFF.
• Push and hold [DEF] F-4 for 1 sec. to select a default
value.
t Push [AGC] (MF5) to select medium time constant.
y Rotate the main dial to set the desired time constant
for ‘AGC MID.’
• AGC time constant can be set between 0.1 to 8.0 sec.
(depends on mode) or turned OFF.
• Push and hold [DEF] F-4 for 1 sec. to select a default
value.
u Push [AGC] (MF5) to select slow time constant.
0.1 (FAST)
RTTY
0.1, 0.2, 0.3, 0.5, 0.8, 1.2, 1.6, 2.0,
0.5 (MID)
PSK
2.5, 3.0, 4.0, 5.0, 6.0
1.2 (SLOW)
AM
3.0 (FAST)
0.3, 0.5, 0.8, 1.2, 1.6, 2.0, 2.5, 3.0,
5.0 (MID)
4.0, 5.0, 6.0, 7.0, 8.0
7.0 (SLOW)
FM
0.1 (FAST)
i Rotate the main dial to set the desired time constant
for ‘AGC SLOW.’
• AGC time constant can be set between 0.1 to 8.0 sec.
(depends on mode) or turned OFF.
• Push and hold [DEF] F-4 for 1 sec. to select a default
value.
Fixed
o Select another non-FM mode. Repeat steps e to i
if desired.
!0 Push EXIT/SET to exit the AGC set mode screen.
5-11
5
FUNCTIONS FOR RECEIVE
■ Twin PBT operation
PBT (Passband Tuning) electronically narrows the IF
passband width by shifting the IF frequency slightly
outside of the IF filter passband to reject interference.
The IC-7700 uses DSP for the PBT function. Moving
both [TWIN-PBT] controls to the same position shifts
the IF for both high and low frequencies.
➥ The LCD shows the passband width and shift frequency graphically.
[TWIN-PBT]
• PBT indicator above PBT-CLR switch lights when PBT
is in use.
➥ Push and hold FILTER for 1 sec. to enter the filter
set screen. Current passband width and shift frequency is displayed in the filter set screen.
➥ To set the [TWIN-PBT] controls to the center positions, push and hold PBT-CLR for 1 sec.
PBT-CLR
The variable range depends on the passband width
and mode. The edge of the variable range is half of the
passband width, and PBT is adjustable in 25
(SSB/CW/RTTY/PSK modes) or 100 Hz (AM mode)
steps.
Shows filter width, shifting value and condition
• [TWIN-PBT] should normally be set to the center positions (PBT setting is cleared) when there is no interference.
• When PBT is used, the audio tone may be changed.
• Not available for FM mode.
• While rotating [TWIN-PBT], noise may occur. This comes
from the DSP unit and does not indicate an equipment
malfunction.
• Filter set screen
• PBT operation example
Both controls at
center position
Cutting a lower
passband
Cutting both higher and
lower passbands
PBT1
PBT1
PBT2
PBT1
PBT2
PBT2
Passband
IF center frequency
Interference
Desired signal
5-12
Passband
Interference Desired signal
Interference
FUNCTIONS FOR RECEIVE
■ IF filter selection
The transceiver has 3 passband width IF filters for
each mode.
FILTER
For SSB, CW and PSK modes, the passband width
can be set within 50 to 3600 Hz in 50 or 100 Hz steps.
A total of 41 passband widths are available.
For RTTY mode, the passband width can be set within
50 to 2700 Hz in 50 or 100 Hz steps. A total of 32 passband widths are available.
For AM mode, the passband width can be set within
200 Hz to 10 kHz in 200 Hz steps. A total of 50 passband widths are available.
For FM mode, the passband width is fixed and 3 passband widths are available.
The filter selection is automatically memorized in
each mode.
The PBT shift frequencies are automatically memorized in each filter.
D IF filter selection
q Select the desired mode.
w Push FILTER several times to select the IF filter
1, 2 or 3.
• The selected passband width and filter number is displayed in the LCD.
D Filter passband width setting (except FM mode)
q Push and hold FILTER for 1 sec. to enter filter set
screen.
w Select any mode except FM.
• Passband widths for FM modes are fixed and cannot be set.
e Push FILTER several times to select the desired
IF filter.
r While pushing [BW] F-1 , rotate the main dial to set
the desired passband width.
• In SSB, CW and PSK modes, the passband width can
be set within the following range.
50 to 500 Hz
50 Hz steps
600 to 3600 Hz
100 Hz steps
• In RTTY mode, the passband width can be set within the
following range.
50 to 500 Hz
50 Hz steps
600 to 2700 Hz
100 Hz steps
• In AM mode, the passband width can be set within the
following range.
200 Hz to 10 kHz 200 Hz steps
• Push and hold [DEF] F-4 for 1 sec. to select the default
value.
t Repeat steps w to r if desired for other modes.
y Push EXIT/SET to exit filter set screen.
The PBT shift frequencies are cleared when the
passband width is changed.
This filter set screen graphically displays the PBT
shift frequencies and CW pitch operations.
5-13
5
FUNCTIONS FOR RECEIVE
D Roofing filter selection
The IC-7700 has 3, 6 and 15 kHz roofing filters at the
1st IF frequency. The roofing filter provides interference reduction from nearby strong signals.
q Push and hold FILTER for 1 sec. to enter filter set
screen.
w Select any mode except FM.
e Push [ROOFING] F-6 to select the desired filter
width from 15 kHz (default), 6 kHz and 3 kHz.
• Push and hold [DEF] F-4 for 1 sec. to select a default
value.
r Push EXIT/SET to exit filter set screen.
D DSP filter shape
The type of DSP filter shape for each SSB, SSB data
and CW can be selected independently from soft and
sharp.
q Push and hold FILTER for 1 sec. to enter filter set
screen.
w Select SSB, SSB data or CW mode.
e Push [SHAPE] F-7 to select the desired filter
shape from soft and sharp.
r Push EXIT/SET to exit filter set screen.
The filter shape can be set for each band (HF and
50 MHz bands), mode, as well as the passband width
setting (CW only) independently from your default setting in filter shape set mode.
D Filter shape set mode
The type of DSP filter shape for SSB, SSB data and
CW can be selected independently from soft and
sharp.
q Push and hold FILTER for 1 sec. to enter filter set
screen.
w Push and hold [SHAPE] F-7 for 1 sec. to enter filter shape set mode.
e Push [Y] F-1 or [Z] F-2 to select the desired item.
r Rotate the main dial to select the filter shape from
soft and sharp.
t Push EXIT/SET to exit filter shape set mode.
HF
SSB
SHARP
(600Hz – )
Select the filter shape for SSB mode in HF bands.
The set filter shape is automatically used only
when the IF filter is set to 600 Hz or wider.
SHARP
SSB–D (600Hz – )
Select the filter shape for SSB data mode in HF
bands.
The set filter shape is automatically used only
when the IF filter is set to 600 Hz or wider.
5-14
FUNCTIONS FOR RECEIVE
D Filter shape set mode (continued)
CW
SHARP
( – 500Hz)
Select the filter shape for CW mode in HF bands.
CW
The set filter shape is automatically used only
when the IF filter is set to 500 Hz or narrower.
SHARP
(600Hz – )
Select the filter shape for CW mode in HF bands.
50M SSB
The set filter shape is automatically used only
when the IF filter is set to 600 Hz or wider.
SOFT
(600Hz – )
Select the filter shape for SSB mode in 50 MHz band.
The set filter shape is automatically used only
when the IF filter is set to 600 Hz or wider.
SHARP
SSB–D (600Hz – )
Select the filter shape for SSB data mode in 50 MHz
band.
CW
The set filter shape is automatically used only
when the IF filter is set to 600 Hz or wider.
SHARP
( – 500Hz)
Select the filter shape for CW mode in 50 MHz band.
CW
The set filter shape is automatically used only
when the IF filter is set to 500 Hz or narrower.
SHARP
(600Hz – )
Select the filter shape for CW mode in 50 MHz band.
The set filter shape is automatically used only
when the IF filter is set to 600 Hz or wider.
5-15
5
FUNCTIONS FOR RECEIVE
■ Noise blanker
The noise blanker eliminates pulse-type noise such as
the noise from car ignitions. The noise blanker is not
available for FM mode.
q Push NB
and OFF.
to turn the noise blanker function ON
• [NB] indicator above this switch lights green.
w Rotate [NB] control to adjust the noise blanker
threshold level.
NB
When using the noise blanker, received signals may
be distorted if they are excessively strong or the
noise type is other than impulse. Turn the noise
blanker OFF, or rotate [NB] control to a shallow position in this case.
[NB] control
D NB set mode
To deal with various type of noises, attenuation level
and noise blank time can be set in NB set mode.
q Push and hold NB for 1 sec. to enter NB set
mode.
w Push [Y] F-1 or [Z] F-2 to select the desired item.
e Rotate the main dial to set the desired level or value.
• Push and hold [DEF] F-4 for 1 sec. to select a default
value.
r Push EXIT/SET to exit NB set mode.
NB Depth
Set the noise attenuation level from 1 to 10.
NB Width
50
Set the blank time from 1 to 100.
5-16
FUNCTIONS FOR RECEIVE
■ Noise reduction
The noise reduction function reduces random noise
components and enhances desired signals which are
buried in noise. The DSP performs the random noise
reduction function.
q Push
NR
to turn the noise reduction ON.
• [NR] indicator above this switch lights green.
w Rotate the [NR] control to adjust the noise reduction
level.
e Push NR to turn the noise reduction OFF.
• [NR] indicator lights off.
NR
Large rotations of the [NR] control results in audio
signal masking or distortion. Set the [NR] control for
maximum readability.
[NR] control
■ Dial lock function
The dial lock function prevents frequency changes by
accidental movement of the tuning dial. The lock function electronically locks the dial.
➥ Push [LOCK] to toggle the dial lock function ON and
OFF.
• The [LOCK] indicator lights when the dial lock function
is in use.
[LOCK] indicator
LOCK
5-17
5
FUNCTIONS FOR RECEIVE
■ Notch function
This transceiver has auto and manual notch functions.
The auto notch function uses DSP to automatically attenuate more than 3 beat tones, tuning signals, etc.,
even if they are moving. The manual notch can be set
to attenuate a frequency via the [NOTCH] control.The
auto notch can be used in SSB, AM and FM mode.
The manual notch can be used in SSB, CW, RTTY,
PSK and AM modes.
[NOTCH] control
➥ Push NOTCH to toggle the notch function between
auto, manual and OFF in SSB and AM modes.
➥ Push NOTCH to turn the manual notch function
ON and OFF in CW, RTTY, PSK modes.
➥ Push NOTCH to turn the auto notch function ON
and OFF in FM mode.
NOTCH
• Auto notch indication
• [NOTCH] indicator above this switch lights green.
• Push and hold NOTCH for 1 sec. to select the notch filter width for manual notch from wide, middle and narrow.
• Set to attenuate a frequency for manual notch via the
[NOTCH] control.
• “ AN ” appears when auto notch is in use.
• “ MN ” appears when manual notch is in use.
• Manual notch indication
While tuning the manual notch, noise may be heard.
This comes from the DSP unit and does not indicate
an equipment malfunction.
■ Digital selector
The digital selector manually adjusts the center frequency of the automatic pre-selector.
[DIGI-SEL] control
The automatic pre-selector adds selectivity ahead of
the 1st mixer. This reduces intermodulation distortion
from the nearby strong signals.
The automatic pre-selector tracks the frequency tuning, changing it’s resonant frequency in discrete steps.
q Push DIGI-SEL to turn the digital selector ON and
OFF.
DIGI-SEL
• [DIGI-SEL] indicator above this switch lights green.
w Rotate [DIGI-SEL] control to adjust the center frequency.
NOTE:
• When rotating the main dial while the digital selector is activated, mechanical noise may be heard
due to the switching noise from internal relays.
• The preamp (P.AMP1 or P.AMP2) cannot be used
while the digital selector is activated.
5-18
FUNCTIONS FOR RECEIVE
■ Autotune function
The Automatic tuning function tunes the displayed frequency (max. CW: 500 Hz, AM: ±5 kHz) automatically
when an off frequency signal is received. This function
is active while in CW or AM mode is selected.
➥ Push [AUTOTUNE] to toggle the autotune function
ON or OFF.
• “ AUTOTUNE ” blinks when autotune function is activate.
• After 30 sec. has passed, the autotune function stops
tuning automatically even it’s still off-frequency.
AUTO
TUNE
AUTOTUNE
Appears
5-19
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