Icom AT-141 manual

INSTRUCTION MANUAL

HF AUTOMATIC

ANTENNA TUNER

AT-141

Contents

INSTRUCTION MANUAL FOREWORD AT-141 HF AUTO MATIC ANTENNA TUNER IMPORTANT MISCELLANEOUS ITEMS FEATURES TABLE OF CONTENTS 1 ANTENNA SYSTEM ■Antenna for ship Required antenna element length Undesirable antenna element lengths ■Coaxial cable ■Ground and counterpoise Why a ship’s ground is required MUST DANGER! NEVER 2 INSTALLATIONS ■Installation outline ■ Control cable ■PL-259connector ■Mounting Mounting on a Mast/Metal pole WARNING: Mounting on a ﬂat surface ■Cable connections IMPORTANT!— AT-141 CONTROL CABLE SIGNALS ■Terminal information Start voltage [STAR] Key voltage [KEY] 4 UNIT DESCRIPTION AND SPECIFICATIONS ■Unit description ■ Speciﬁcations