Hf automatic antenna tuner at-140 instruction manual.
I foreword thank you for purchasing the at-140 hf auto- matic antenna tuner . The at-140 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 carefull...
Ii miscellaneous items the following parts are additionally required for instal- lation, but are not supplied with the at-140. Purchase these parts locally. Q awg 14 × 4-conductor shielded cable *icom offers an optional opc-1147 control cable . Length: 10 m; 32.8 feet w 50 Ω coaxial cable e pl-259 c...
1 1 antenna system ■ 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 multiples of 1 ...
2 1 antenna system ■ coaxial cable insulate the lead-in cable of the at-140 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 ■ 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-140 in the desired location. • refer to p. 4 “mounti...
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 ■ cable connections q connect the coaxial cable and the control cable to the at-140 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 fix both ...
3 6 control cable signals ■ 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-140 begins automatic tuning. Key voltage [key] during automatic tuning, the at-140 grounds the key voltage l...
7 3 control cable signals ■ transceiver setting ic-m700 with serial number 2500 and below in the ic-m700, change the [tune] switch setting from the “1” position to the “2” position. Confirm that the [key] switch is in the “2” position. Refer to the ic- m700 instruction manual p. 9 for details. Other...
8 4 unit description and specifications antenna terminal mounting plate control cable receptacle antenna cable receptacle mounting plate water drain screw ground terminal 340 mm; 13.4 in 230 mm; 9.1 in 80 mm; 3.1 in 91.5 mm; 3.6 in ■ specifications ■ unit description • frequency coverage : 1.6–30 mh...
1-1-32 kamiminami, hirano-ku, osaka 547-0003 japan a-6175h-1ex printed in japan © 2002 icom inc. Icom america inc. 2380 116th avenue n.E., bellevue, wa 98004, u.S.A. Phone: (425) 454-8155 fax: (425) 454-7619 url: http//www.Icomamerica.Com phone: (425) 454-7619 icom (europe) gmbh communication equipm...
