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Table of contents for the manual
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Page 1
2001 NEW HF AUT OMA TIC ANTENNA TUNER AT-141 INSTRUCTION MANUAL AT-141_0.qxd 05.12.1 11:06 Page 1[...]
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i 2001 NEW 2001 NEW FOREWORD Thank you for purchasing the A T -141 HF AUTO- MA TIC ANTENNA TUNER . The A T -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 . IMPOR T ANT READ ALL INSTRUCTIONS carefully and com- pletely befor[...]
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ii 2001 NEW MISCELLANEOUS ITEMS The following parts are additionally required for instal- lation, but are not supplied with the A T -141. Purchase these parts locally . q A WG 14 × 4-conductor shielded cable *Icom offers an optional OPC-1465 CONTROL CABLE . Length: 10 m; 32.8 feet w 50 Ω coaxial cable e PL-259 connectors FEA TURES Matches all ba[...]
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1 1 ANTENNA SYSTEM 2001 NEW ■ Antenna for ship Required antenna element length Required antenna element length to achieve full per- formance varies according to the lowest frequency: The longer the antenna element, the better the an- tenna ef fi ciency . Undesirable antenna element lengths A VOID multiples of 1 ⁄ 2 λ (half wavelength) for an-[...]
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2 1 ANTENNA SYSTEM ■ Coaxial cable Insulate the lead-in cable of the A T -141 antenna ter- minal and antenna element from other metal objects. T o prevent interference, keep cables as far as possi- ble from an antenna, electric pump and other elec- tronic equipment. T o prevent erroneous indications, keep cables as far away as possible from the ?[...]
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2 3 INST ALLA TIONS 2001 NEW ■ Installation outline q Connect a control cable and 4-conductor shielded cable. • Refer to “ Control cable ” below . w Connect and solder the PL-259 connector to the coaxial cable. • Refer to p. 4 “ PL-259 connector . ” e Mount the A T -141 in the desired location. • Refer to p. 4 “ Mounting. ” r Co[...]
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4 2 INST ALLA TIONS ■ PL-259 connector q Slide the coupling ring over the coaxial cable. Strip the cable jacket and pull back to reveal 10 mm of braid. • Soft solder the exposed braid and then pull out the jacket. w Strip the cable as shown below . Soft solder the cen- ter conductor the entire length of the exposed braid. e Slide the connector [...]
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5 2 INST ALLA TIONS 2001 NEW ■ Cable connections q Connect the coaxial cable and the control cable to the A T -141 as illustrated below . w Cover both the antenna and the control cable con- nectors with rubber vulcanizing tape and fi x it with a vinyl tape to prevent water seeping into the con- nector . e Fix both of the coaxial and control cabl[...]
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3 6 CONTROL CABLE SIGNALS 2001 NEW ■ T erminal information Consider the following points when using a non-Icom transceiver . Start voltage [ST AR] When a start voltage (less than 1 V) is received, the A T -141 begins automatic tuning. Key voltage [KEY] During automatic tuning, the A T -141 grounds the key voltage line, and the HF transceiver redu[...]
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4 7 UNIT DESCRIPTION AND SPECIFICA TIONS 2001 NEW Antenna terminal Mounting plate Control cable receptacle Antenna cable receptacle Mounting plate W ater drain screw Ground terminal 340 mm 230 mm 80 mm 91.5 mm ■ Speci fi cations ■ Unit description • Frequency coverage : 1.6 – 30 MHz (with 7 m or longer antenna element) • Power supply req[...]
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1-1-32 Kamiminami, Hirano-ku, Osaka 547-0003, Japan A-6472H-1EU Printed in Japan © 2005 Icom Inc. 2001 NEW Ico m A m e ri ca I n c . <Corporate Headquarters> 2380 1 16th Avenue N.E., Bellevue, W A 98004, U.S.A. Phone: +1 (425) 454-8155 Fax: +1 (425) 454-1509 URL: http//www .icomamerica.com E-mail: sales@icomamerica.com <Customer service&g[...]