2001 new hf automatic antenna tuner at-141 instruction manual at-141_0.Qxd 05.12.1 11:06 page 1.
I 2001 new 2001 new 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 ins...
Ii 2001 new miscellaneous items the following parts are additionally required for instal- lation, 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; 32.8 feet w 50 Ω coaxial cable e ...
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 efficiency. Undesirable antenna element lengths avoid multip...
2 1 antenna system ■ coaxial cable insulate the lead-in cable of the at-141 antenna ter- minal and antenna element from other metal objects. To prevent interference, keep cables as far as possi- ble from an antenna, electric pump and other elec- tronic equipment. To prevent erroneous indications, ke...
2 3 installations 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 at-141 in the desired location. • refer to p. ...
4 2 installations ■ 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 o...
5 2 installations 2001 new ■ cable connections q connect the coaxial cable and the control cable to the at-141 as illustrated below. W cover both the antenna and the control cable con- nectors with rubber vulcanizing tape and fix it with a vinyl tape to prevent water seeping into the con- nector. E ...
3 6 control cable signals 2001 new ■ terminal information consider the following points when using a non-icom transceiver. Start voltage [star] when a start voltage (less than 1 v) is received, the at-141 begins automatic tuning. Key voltage [key] during automatic tuning, the at-141 grounds the key ...
4 7 unit description and specifications 2001 new antenna terminal mounting plate control cable receptacle antenna cable receptacle mounting plate water drain screw ground terminal 340 mm 230 mm 80 mm 91.5 mm ■ specifications ■ unit description • frequency coverage : 1.6–30 mhz (with 7 m or longer an...
1-1-32 kamiminami, hirano-ku, osaka 547-0003, japan a-6472h-1eu printed in japan © 2005 icom inc. 2001 new icom america inc. 2380 116th avenue n.E., bellevue, wa 98004, u.S.A. Phone: +1 (425) 454-8155 fax: +1 (425) 454-1509 url: http//www.Icomamerica.Com e-mail: sales@icomamerica.Com phone: (425) 45...
