FOREWORD

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 op- eration. If you have any questions, contact your dealer.

IMPORTANT

READ ALL INSTRUCTIONS carefully and completely before using the AT-141.

SAVE THIS INSTRUCTION MANUAL. This instruction manual contains important safety and installation instructions.

EXPLICIT DEFINITIONS

WordDefinition

RWARNING Personal injury, fire hazard or electric shock may occur.

CAUTION Equipment damage may occur.

If disregarded, inconvenience only. No

NOTE personal injury, fire hazard or electric shock.

PRECAUTIONS

RDANGER 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.

NEVER use without a ground connection.

NEVER transmit during internal adjustment. This may cause an electric shock.

USE the ground terminal for ground connection. The mounting plate is not connected internally.

Ground terminal

Mounting plate

DO NOT operate your HF marine transceiver without running the boat’s engine.

AVOID using the AT-141 in areas where the temperature is below –30°C or above +60°C.

SUPPLIED ACCESSORIES

The following accessories are supplied with the AT-141.

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u

w

 

 

 

 

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!0

!1

 

 

 

!2

 

Qty.

qU-bolts ……………………………………………… 2 w U-bolt plates ……………………………………… 2

e Flat washers (M6 large)

………………………… 8

r Flat washers (M6 small)

………………………… 4

tSpring washers (M6) ……………………………… 8 y Nuts (M6) …………………………………………… 8

u Hex head bolts (M6⋅50) ………………………… 4

iSelf-tapping screws (A0 6⋅30) …………………… 4 o Weatherproof cap ………………………………… 1 !04-pin connector …………………………………… 1 !1Connector pins …………………………………… 4 !2Ground cable (OPC-412) ………………………… 1

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

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