ICOM AT-14T Instruction manual

INSTRUCTION MANUAL

HF AUTOMATIC
ANTENNA TUNER

AT-141

FOREWORD

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PRECAUTIONS

Thank you for purchasing the AT-141 HF AUTO-

MATIC ANTENNA TUNER.

The AT-141 is designed, primarily for use with Icom
HF transceivers.

Refer to your HF transceiver instruction manual for
operation. If you have any questions, contact your
dealer.

IMPORTANT

READ ALL INSTRUCTIONS carefully and com-

pletely before using the AT-141.

SAVE THIS INSTRUCTION MANUAL. This

instruction manual contains important safety and in­stallation instructions.

EXPLICIT DEFINITIONS

WORD DEFINITION

RDANGER!

RWARNING!

CAUTION Equipment damage may occur.

NOTE

Personal death, serious injury or an
explosion may occur.

Personal injury, fire hazard or elec­tric shock may occur.

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

R DANGER HIGH VOLTAGE! NEVER touch the

antenna terminal, ground terminal, antenna or counter­poise while transmitting. Place the AT-141, antenna and
counterpoise in positions where no one can touch them.

R WARNING! NEVER transmit during internal

adjustment. This may cause an electric shock.

NEVER use without a ground connection.

USE the ground terminal for ground connection.

The mounting plate is not connected internally.

Ground terminal

Mounting plate

DO NOT loosen the screws or cord bushings. This

may result in water immersion and damage the an­tenna tuner.

DO NOT operate your HF transceiver without run-

ning the vessel’s engine. When the transceiver’s
power is ON and your vessel’s engine is OFF, the ves­sel’s battery will soon become exhausted.

DO NOT use the AT-141 in areas where the tem-

perature is below –30°C or above +60°C.

SUPPLIED ACCESSORIES

The following accessories are supplied with the AT-141.

Qty.

i

q U-bolts ������������������ 2
w U-bolt plates ���������������� 2
e Flat washers (M6 large) ����������� 8
r Flat washers (M6 small) ����������� 4
t Spring washers (M6) ������������ 8
y Nuts (M6) ����������������� 8
u Hex head bolts (M6×50) ����������� 4
i Self-tapping screws (A0 6×30) �������� 4
o Weatherproof cap ������������� 1
!0 Rubber vulcanizing tape����������� 1
!1 4-pin connector �������������� 1
!2 Connector pins��������������� 4
!3 Ground cable (OPC-412) ���������� 1

MISCELLANEOUS ITEMS

TABLE OF CONTENTS

The following parts are additionally required for instal­lation, but are not supplied with the AT-141.
Purchase these parts locally.

q AWG 14 × 4 conductor shielded cable

• Icom offers an optional OPC-1465 control cable.
Length: 10 m

w 50 Ω coaxial cable
e Two PL-259 connectors

FEATURES

Weather resistant

The AT-141 is housed in a durable, completely
weather resistant ASA case, with a rubber gasket. The
antenna tuner can be conveniently installed near the
antenna element.

Matches all bands

The AT-141 matches all frequencies on the HF marine
band. For example, the tuner matches a 7 m long-wire
antenna across 1.6–30 MHz.

Full automatic tuning

Just push the [TUNE] key on the transceiver, and the
AT-141 immediately tunes for a minimum SWR on any
frequency in the HF marine band.

HF operation on any size ship

The AT-141 allows HF operation where antenna ele­ment length is restricted due to space.

Simple installation

Installation is simple. Just connect the control and an­tenna cables. You never need to open the cover.

45 memories for shorter tuning time

To decrease the tune-up time, the AT-141 automati­cally stores the matching conditions for up to 45 fre­quencies. Retuning a memorized frequency takes ap­proximately 1 second.

Super capacitor for memory backup

Even if the AT-141 is not used for approximately 1
week, the built-in super capacitor backs up the con­tents of the 45 memories.

FOREWORD ………………………………………… ii

IMPORTANT …………………………………………… ii

EXPLICIT DEFINITIONS …………………………… ii

PRECAUTIONS ……………………………………… ii

SUPPLIED ACCESSORIES ………………………… ii

MISCELLANEOUS ITEMS………………………… iii

FEATURES ………………………………………… iii

1 SYSTEM INSTALLATION ………………………… 1

■ Five Critical Points for a successful HF
installation ���������������� 1

■ Vessel ground connection �������� 1

■ Antenna and tuners ������������ 2

■ The importance of grounding ������� 2

2 ANTENNA SYSTEM ……………………………… 3

■ Antenna for ship ������������� 3

■ Coaxial cable �������������� 4

■ Ground and counterpoise ��������� 4

3 INSTALLATIONS ………………………………… 5

■ Installation outline ������������ 5

■ Control cable �������������� 5

■ PL-259 connector ������������ 5

■ Waterproofing the antenna connection ��� 6

■ Mounting ���������������� 6

■ Cable connections ������������ 7

4 CONTROL CABLE SIGNALS …………………… 8

■ Terminal information ����������� 8

■ Unit description ������������� 9

■ Specifications �������������� 9

5 UNIT DESCRIPTION AND SPECIFICATIONS … 9

6 INSTALLATION EXAMPLE …………………… 10

7 INFORMATION ………………………………… 12

■ About CE and DOC ����������� 12

■ Disposal ��������������� 12

Low power tune up

The AT-141 emits low output power during tuning. This
feature reduces the possibility of causing interference
to other stations.

Tuner Through function

The Tuner Through function is built into the AT-141.
This function helps improve receiver gain, depending
on the antenna element length used, and the operat­ing frequency.

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

ii

1

Copper pipe

Transceiver

Antenna tuner

Metal object Copper screen

SYSTEM INSTALLATION

■ Five Critical Points for a successful HF installation

These critical points apply to almost any HF installa­tion, whether it is for a base station, in a vehicle, or
a marine vessel. For the best and most reliable com­munication capability, use them during the planning
and installation of your HF system.

1. Install transceiver as close as possible to your ves­sel’s operation location and to your power source,
whether you are using batteries or an external
power supply.

2. Install the antenna in an open location as far as
possible from your operating station.

3. Install the antenna tuner in an open location* as
close to the base of your antenna as possible.

■ Vessel ground connection

The HF system MUST have an adequate RF ground
connection. Otherwise, the overall efficiency of the
HF system installation will be reduced. Electrolysis,
electrical shocks and interference from other equip­ment could also occur.

For best results, use 50 or 75 mm wide copper
strap and make the connection as short as possible.
Ground the HF system to one ground point, otherwise
the voltage difference (in RF level) between 2 ground
points may cause electrolysis.

RWARNING— When grounding to a metal hull

Use Zinc anodes to protect the hull from electroly-

sis.

Ask your technical dealer, installer or refer to a

technical book for RF grounding details.

CAUTION: NEVER connect the HF system to a

“positive-grounded ship,” otherwise it will not func­tion.

4. Install copper straps or radial wires as your ground
system. These will give you a good solid ground
system, which is critical for reliable communica­tions.

5. Make all your power source, control and coaxial
cables as short as possible. Do not coil up any
cables that are longer than they should or could
be.

Following these rules will minimize marginal installa­tions and problem sources such as RF feedback in
the transceiver, power supply or cables and “hot” or
RF burning microphones.
If all 5 above points are followed during the design
and installation of your HF system, the operator can
expect top performance.

* The AT-141 is housed in a durable, completely weather

resistant case. You don’t have to worry a lot about rain,
splash, and so on.

Best ground points

• External ground plate

• Copper screen

• Copper foil

Acceptable ground point

• Stainless steel stanchion

• Through mast

• Through hull

• Metal water tank

Undesirable ground points

• Engine block

• Ship’s DC battery ground

Unusable ground points

( these connections may cause an explosion or electrical

shock)

• Gas or electrical pipe

• Fuel tank or oil-catch pan

Ground system example

1

■ Antenna and tuners

SYSTEM INSTALLATION

1

If your Icom HF system is going aboard a sailboat,
you may use an insulated backstay to make up your
antenna system. Your best range will be from an in­sulated backstay because of the long length of the
antenna element which is that portion between the
top and bottom insulators. Have your rigger put the
top insulator about at least 1 meter down from the
tip of the mast. Have your rigger install the bottom
insulator at about eye-level when you’re standing
back aft. (This length between insulators should not
exceed 37 meters or be less than 7 meters.)

This non-resonant antenna can be tuned by the Icom
automatic antenna tuner that matches your trans­ceiver. The tuner is connected to the transceiver. We
suggest you use “GTO-15” high voltage lead-in wire
from the single wire output of the tuner to your in­sulated backstay. This high voltage wire won’t break
down in wet weather or sunlight. Use stainless steel
hose clamps to attach the wire to the insulated back­stay.

The tuner is fed with a coaxial and a control cable
from the Icom transceiver.

Check with your dealer regarding antennas and ca­bling.

RDANGER: HIGH VOLTAGE!

NEVER touch the antenna element while tuning

or transmitting.

Antenna element

Insulator

Antenna
tuner

Insulator

Ship’s
ground

Insulator

Antenna element

Antenna
tuner

To
transceiver

■ The importance of grounding

Surface area to the sea water and the use of copper
foil exclusively throughout your RF ground system is
the combination that gives you reliable long range
communications. The sea water gives your signal a
solid surface to push off from. This is called a “coun­terpoise,” and it’s the necessary “other-half” of your
antenna system that must be achieved for your over­all HF transceiver system to work well.

2

2

L =

300

f

×

1
2

n

×

L =

300

16

×

1

2

n

×

9.4, 18.8, ...

Insulator

Backstay operates as
a long-wire antenna.

Insulator

Whip antenna

ANTENNA SYSTEM

■ Antenna for ship

D Required antenna element length

Required antenna element length to achieve full per­formance varies, according to the lowest frequency.

The lowest frequency Required antenna element length

1.6 MHz band 7 m; 23.0 feet or longer

4 MHz band 3 m; 9.8 feet or longer

The longer the antenna element, the longer commu­nication distance.

D Undesirable antenna element lengths

DO NOT

tiples of 1⁄2λ lengths (half wavelength), since tuning
becomes difficult.

L : Undesirable antenna element length [m]
f : Operating frequency [MHz]
n : Natural number (n = 1, 2, 3, ...)

use an antenna element such as mul-

[Example]

At an operating frequency of 16 MHz, avoid the fol­lowing antenna element lengths:

For example, if 15 m is selected for an antenna ele­ment length, you have no problem in the 1.6 to 25
MHz marine bands range.

NOTE: Keep antennas as far away from other ob­jects as possible, especially metal objects.

3

3

■ Coaxial cable

L =

300

f

×

1
4

L =

300

16

×

1

4

4.7 [m]

Ground terminal

AT-141

1

⁄4λ radial for

each band

ANTENNA SYSTEM

2

Insulate the lead-in cable of the AT-141 antenna ter­minal and antenna element from other metal objects.

To prevent interference, keep cables as far as pos­sible from an antenna, electric pump and other elec­tronic equipment.

■ Ground and counterpoise

D Why a ship’s ground is required

The AT-141’s ground terminal MUST be connected
to your ship’s ground. Grounding prevents electric
shocks, interference to other equipment and other
problems. The AT-141 does not properly operate
without the grounding connections.

R DANGER! NEVER connect the ground termi-

nal to the following points. These connections may
cause an explosion or electric shocks:

• Gas or electrical pipe

• Fuel tank or oil-catch pan

IMPORTANT: The mounting plate is NOT con-

nected to the AT-141’s internal ground.

D Ideal ground points

One of following points is ideal:

• Ship’s ground

• External ground plate

• External copper screen/foil

D Good ground points

If electrically connected to sea water, one of the fol­lowing points is usable:

• Stainless steel stanchion

• Through mast

• Through hull

• Metal water tank

To prevent erroneous indications, keep cables as far
away as possible from the flux gate compass.

Use suitable noise filters for alternators or fluorescent
lights. Ask your dealer for details.

D Counterpoise

If your ship is made of FRP, etc. and a good ship’s
ground is not available, connect a counterpoise.

1

⁄4λ (quarter wavelength) radial for each band is suit-

able for a counterpoise. Install the counterpoise di­rectly below the AT-141’s ground terminal. Insulate
the ends of each radial from other metal objects.
Layout the radial horizontally and as straight as pos­sible.

L :

Counterpoise length for the operating frequency [m]

f : Operating frequency [MHz]

[Example]

At an operating frequency of 16 MHz, use a counter­poise with the following length:

D Undesirable ground points

These connections may cause noise or electrolysis:

• Engine block

• Ship’s DC battery ground

D Electrolysis

All ground cables from the AT-141 or HF transceiver
on your ship should be connected to only one ship’s
ground.

DO NOT connect to two or more points. Voltage

difference between two or more ship’s grounds may
cause electrolysis.

DO NOT connect between dissimilar metals where

an electric current is present. These connections may
cause electrolysis.

Ground cable

For best results, use the heaviest gauge wire or
metal strap. Make the distance between the AT-141’s
ground terminal and ship’s ground as short as pos­sible.

The supplied ground cable can be used for ground
connection through a mast. Confirm that the mast is
electrically connected to sea water.

RWARNING!— When grounding to metal hull

Use a Zinc anode to protect the hull from electroly­sis. Ask your technical dealer or installer, or refer to
a technical book for RF ground details.

4

3

D When connecting to an Icom transceiver

[GND]

To the AT-141

[ANTC] : Black

[13.6] : Red

[STAR] : White

[KEY] : Green

Use the optional OPC-1465, or assemble a four conductor shielded
cable of the desired length using the connector kits supplied with the
transceiver and the tuner.

[ANTC] : Black

[13.6] : Red

[STAR] : White

[KEY] : Green

To the transceiver

[GND]

Coupling

30 mm

10 mm (tin)

1–2 mm

10 mm

tin

Solder

Solder

INSTALLATIONS

■ Installation outline

q Connect the pins to the control cable and insert

into the supplied connector.

• Refer to “Control cable” as described below.

w Connect and solder the PL-259 connector to the

coaxial cable.

Refer to “PL-259 connector” as described below.

e Mount the AT-141 in the desired location.

• Refer to page 6, “Mounting.”

■ Control cable

Between the AT-141 and HF transceiver, connect
four control signal lines, as shown below.
To prevent RF feedback, use a four conductor
shielded cable.
Connect the shield line to the [GND] terminal on the
transceiver.

r Connect the control and coaxial cables between

the transceiver and the AT-141.

• Refer to page 7, “Cable connections.”

t Connect the AT-141’s ground terminal to the ship’s

ground or counterpoise.

• Refer to page 3 “Antenna for ship,” and page 4

“Ground and counterpoise.”

y Connect the antenna element (wire).

• Refer to examples on pages 2, and 10–12.

Icom offers an optional OPC-1465 control cable.

• Length: 10 m

Refer to page 8, “Terminal information” for details.

■ PL-259 connector

q Slide the coupling ring down.
Strip the cable jacket and tin the shield.

• Tin the exposed braid and then pull out the jacket.

w Strip the cable as shown below.
Tin the center conductor.

5

5

e Slide the connector body over the cable and sol-

der it.

NOTE: Use a soldering iron with enough heating
power to securely solder the ground braid and
body. Otherwise the connection may be loose, and
communication trouble may occur.

r Screw the coupling ring onto the connector body.

■ Waterproofing the antenna connection

Wing nut

Using U-bolts

U-bolt

U-bolt plate

Flat washer (L)

Spring washer

Nut

Mast/
Metal pole

32–60 mm

Flat washer (S)

NEVER install the antenna
tuner upside down.

Using self-tapping
screws

Using nuts and bolts

Nut

Spring
washer

Flat
washer (L)

Flat
washer (L)

Hex head
bolt

Drill a hole here
Diameter:7–8 mm;

9

⁄32–5⁄16 inches

Flat
washer (S)

CAUTION: If you skip the following steps, moisture will get

into the connector, and this could damage the antenna tuner.

q Cut off just the top of the weatherproof cap, and

pass the antenna wire through the cap.

Antenna wire

Weatherproof cap

w Insert the antenna wire into the opening of the

crimp-on wire terminal.

• Crimp or solder the antenna wire.

Crimp

Solder

e Put the crimp-on wire terminal, star washer, and

wing nut on the base nut, in that order, then,
tighten the wing nut.

• Make sure the base nut is tightened firmly, before you
tighten the wing nut. (See the Fig.1 to the right.)

• Carefully bend the wire terminal up, after you tighten
the wing nut. (See the Fig.2 to the right.)

Fig.1

r Place the weatherproof cap over as much of the

insulator as possible.

• How far down it will go depends on the height of the
wing nut.

t

Start wrapping the rubber vulcanizing tape at the bot­tom of the insulator, then the weatherproof cap and
finally the antenna wire to prevent water seeping.

• Wrap electrical tape* over the rubber vulcanizing tape
to secure waterproofing.

* The electrical tape is not supplied with the AT-141.

Fig.2

e

Insulator

Bend this part
up, AFTER
you tighten
the wing nut.

INSTALLATIONS

Star washer

Crimp-on wire terminal

Base nut

Antenna tuner

r

t

Rubber
vulcanizing tape

3

■ Mounting

CAUTION: Mount the AT-141 in a horizontal position

or in a vertical position with the antenna terminal up.

D Mounting on a Mast/Metal pole

R WARNING! Mount the AT-141 securely with

the supplied nuts and bolts. Otherwise, vibrations
and shocks due to waves could loosen the antenna
tuner making it fall, causing personal injury.

D Mounting on a flat surface

6

3

Rubber vulcanizing tape

Coaxial cable

Control cable

Icom’s HF transceiver

INSTALLATIONS

■ Cable connections

q Connect the coaxial cable and the control cable to

the AT-141, as shown below.

w Wrap both the antenna and the control cable con-

nectors with rubber vulcanizing tape, and then
wrap electrical tape* over the rubber vulcanizing
tape to secure waterproofing.

* The electrical tape is not supplied with the AT-141.

e Fix both the coaxial and control cable to protect

the inside connections.

DO NOT pull the antenna and control cable re-

ceptacles. This may cause disconnection (in­side the AT-141), internal connector damage or
a bad connection.

r Connect the coaxial cable and the control cable to

the transceiver as shown below.

t Ground the transceiver, AT-141 and shield cable

of the control cable via the ground terminal.

• See pages 1, 2 and 4 for grounding details.

IMPORTANT:

NEVER ground the AT-141 via the mounting

plate. It is not internally connected to ground.

Ground terminal

Mounting plate

Connect to the
ship’s ground.

OPC-412
(Supplied)

AT-141

Copper
strap,
etc.

Ship’s ground

Connect to the
ship’s ground.

Ground wire

(Purchase separately)

Ship’s ground

Copper
strap,
etc.

7

7

■ Terminal information

[KEY]
[STAR]
[13.6]
[ANTC]

8

6

4

2

0

Time

More than
350 milliseconds

Approximately 7.5 V

Less than 1 V to
start tuning

Start
voltage
[V]

*For tuner through operation; Less than 250 milliseconds

8

6

4

2

0

Time

Key
voltage
[V]

Grounded

Approximately 7.5 V

During automatic tuning

CONTROL CABLE SIGNALS

4

Terminal Description

[KEY]

[13.6]

[STAR]

Key voltage. Grounded during tuning.
Maximum current drain 100 mA

13.6 V DC + input terminal.
Maximum current drain 2 A

Receives start voltage.
Maximum current drain 1 mA

[ANTC] Antenna current detector output.

D Start voltage [STAR]

When a start voltage (less than 1 V) is received, the
AT-141 begins automatic tuning.

D Key voltage [KEY]

During automatic tuning, the AT-141 grounds the key
voltage line, and the HF transceiver reduces output
power.

8

8

5

Antenna ter

Mounting plate

le connector

Ground ter

UNIT DESCRIPTION AND SPECIFICATIONS

■ Unit description

340 mm

230 mm

80 mm

minal

Mounting plate

Antenna connector

minal

90 mm

Control cab

■ Specifications

• Frequency coverage : 1.6–30 MHz (

• Power supply requirement : 13.6 V DC ±15% (supplied from the HF transceiver)

• Current drain : 1.0 A or less

• Operating temperature range : –30°C to +60°C

• Weight (approximate) : 2.5 kg

• Antenna connector : SO-239 (50 Ω)

• Maximum Input power : 150 W (PEP)
100 W (continuous)

• Automatic tuning time : Approximately 2 to 3 seconds (general condition)
Maximum 15 seconds
Approximately 1 second (retuning to a memorized frequency)

• Automatic tuning accuracy : SWR 2.0 : 1 or less (after tuning, except for multiples of 1⁄2 λ)

• Usable pole diameter : 32 to 60 mm

All stated specifications are subject to change without notice or obligation.

With a wire antenna longer than 7 meters, and the ground
terminal connected to the vessel’s ground point, or a
counterpoise wire longer than 7 meters.

)

9

9

INSTALLATION EXAMPLE

Horizontal element

6

The following are antenna tuner and antenna installa­tion examples for a non-sail boat.
They also explain both transmission and reception
performance, for your reference.

RDANGER: HIGH VOLTAGE!

• Descriptions

Ver tical
element

Antenna
tuner

NEVER touch the antenna element while tuning or

transmitting.

D Antenna tuner location versus the strength of radiation from the antenna element

The antenna tuner should be installed outside the vessel as high as possible.
However, the length of the vertical element should also be as long as possible.

Good — High position

This antenna tuner unit position is bet­ter than others but the length of the ver­tical element is shorter than the others.

Better — Mid position

This installation is also good.

Best — Low position

This installation is perfect for the length
of the vertical element and the total ele­ment length.

D Style of the antenna element

When the horizontal element is longer, or made with multiple wires, the effective height of the antenna is high and
communication distance may be improved.

Good — Vertical

This is a basic style with only the verti­cal element. This style is not effective
for NVIS* communications.

* Near Vertical Incidence Skywave. This is a radio-wave propagation method that provides usable signals in the range between

groundwave and skywave distances (usually 30 to 400 miles, or 50 to 650 km).

Better — Inverted-L

This style is a good for NVIS* and lon­ger communications.

Best — Two wire inverted-L

This is an even better element style
than the one to the left.

D Antenna element style versus the strength of radiation from the antenna element

When the antenna tuner is installed on the deck, the following installation may be possible. The antenna element
should be as long as possible, especially for the HF low band, such as the 8 MHz marine band.

Good — Vertical

This is a good style. The vertical ele­ment radiates waves, but the length of
the element may not be enough for HF
low band operation.

Better — Type-T

The antenna effective height is much
better than other styles. The higher
position of the Antenna tuner provides
longer communication distance.

Best — Inverted-L

This is the best style for HF low band
operation as the vertical element is
long, and the total element length is
also long.

10

6

INSTALLATION EXAMPLE

D Antenna tuner location versus the strength of radiation from the same length of the

antenna element

When the antenna tuner is installed on the deck with the same element length connected.

Good — Horizontal

The antenna tuner is installed at a
higher position and the element is in­stalled horizontally.

Better — Inverted-L

The element is bent in the middle as an
Inverted-L antenna.

Best — Vertical

If the length of the antenna element is
limited because of installation space, a
longer vertical element will give a lon­ger communication distance.

D Style of the antenna element connection versus the strength of the radiation from the

element

The vertical element should be connected at the end of the horizontal element.

Good — Long

The distance is longer between the
connection of the vertical element and
the end of the horizontal element.

Better — Short

The distance between the vertical element
and the end of the horizontal element is
shorter, compared with the one to the left.

Best — Direct

The vertical element is connected di­rectly to the end of the horizontal ele­ment.

D Thickness of the Antenna element versus the strength of radiation from the element

The thickness of the antenna element does not change communication quality much, but it should be as thick as
possible for better radiation from the antenna element.

Good — Regular size

Better — Thick Best — Thicker

RDANGER: HIGH VOLTAGE!

NEVER touch the antenna element while tuning or transmitting.

11

■ About CE and DOC

Hereby, Icom Inc. declares that the ver­sions of AT-141 which have the “CE” sym­bol on the product, comply with the essen-

tial requirements of the Radio Equipment
Directive, 2014/53/EU, and the restriction of the use
of certain hazardous substances in electrical and elec­tronic equipment Directive, 2011/65/EU. The full text
of the EU declaration of conformity is available at the
following internet address:
https://www.icomjapan.com/support/

■ Disposal

The crossed-out wheeled-bin symbol
on your product, literature, or packag­ing reminds you that in the European
Union, all electrical and electronic
products, batteries, and accumulators

(rechargeable batteries) must be taken
to designated collection locations at the end of their
working life. Do not dispose of these products as un­sorted municipal waste. Dispose of them according to
the laws in your area.

INFORMATION

7

Below statement is for UKCA purpose only

United Kingdom Authorised Importer:
Icom (UK) Ltd.
Address: Blacksole House, Altira Park, Herne Bay,

Kent, CT6 6GZ, U.K.

12

12

How the World Communicates

A6472H-1EU-7
Printed in Japan
© 2005–2022 Icom Inc. Dec. 2022

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