Hf automatic antenna tuner at-140 instruction manual.
Supplied accessories the following accessories are supplied with the at-140. 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 operation. If you have an...
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/n control cable . Length: 10 m (32.8 feet) w 50 Ω coaxial cable e two ...
1 1 system installation * the at-140 is housed in a durable, completely weather resistant case. You don’t have to worry a lot about rain, splash, and so on. Five critical points for a successful hf installation ■ these critical points apply to almost any hf installa- tion, whether it is for a base s...
2 1 antenna system antenna and tuners ■ if your icom hf system is going aboard a sailboat, you may use an insulated backstay to make up your antenna system. Your best range will be from an in- sulated backstay because of the long length of the antenna element which is that portion between the top an...
2 3 antenna system antenna for land operation ■ antenna for ship ■ required antenna element length d required antenna element length to achieve full per- formance varies, according to the lowest frequency. The lowest frequency required antenna element length 1.6 mhz band 7 m (23.0 feet) or longer 4 ...
4 2 antenna system coaxial cable ■ insulate the lead-in cable of the at-140 antenna termi- nal and antenna element from other metal objects. To prevent interference, keep cables as far as pos- sible from an antenna, electric pump and other elec- tronic equipment. To prevent erroneous indications, ke...
2001 new 3 5 installations 2001 new 2001 new installation outline ■ q connect the pins to the control cable and insert into the supplied connector. • refer to “control cable” as described below. W connect and solder the pl-259 connector to the coaxial cable. Refer to page 6, “pl-259 connector.” e mo...
2001 new 2001 new 6 3 installations pl-259 connector ■ q slide the coupling ring down. Strip the cable jacket and tin the shield. • tin the exposed braid and then pull out the jacket. Coupling 30 mm 10 mm (tin) w strip the cable as shown below. Tin the center conductor. 1–2 mm 10 mm tin e slide the ...
7 control cable signals 3 7 mounting ■ caution: mount the at-140 in a horizontal posi- tion or in a vertical position with the antenna termi- nal up. Mounting on a mast/metal pole d using u-bolts u-bolt u-bolt plate flat washer (l) spring washer nut mast/ metal pole 32–60 mm; 1.3–2.4˝ flat washer (s...
8 4 control cable signals terminal information ■ terminal description [key] key voltage. Grounded during tuning. Maximum current drain; 100 ma [13.6] 13.6 v dc + input terminal. Maximum current drain; 2 a [star] receives start voltage. Maximum current drain; 1 ma [antc] antenna current detector outp...
2001 new 2001 new 9 4 control cable signals 2001 new 2001 new 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. See the ic- m700 instruction...
2001 new 5 10 unit description and specifications 2001 new 2001 new 10 specifications ■ unit description ■ frequency coverage: 1.6–30 mhz (with 7 m; 23.0 feet) or longer antenna element) • power supply requirement: 13.6 v dc (supplied from the hf transceiver) • current drain: maximum 2 a • operating...
6 11 installation example 2001 new 2001 new 11 2001 new 2001 new the following are antenna tuner and antenna installa- tion examples for a non-sail boat. They also explain both transmission and reception performance, for your reference. • descriptions antenna tuner vertical element horizontal elemen...
2001 new 2001 new 12 6 installation example rdanger: high voltage! Never touch the antenna element while tuning or transmitting. Antenna tuner location versus the strength of radiation from the same length of the d antenna element when the antenna tuner is installed on the deck with the same element...
1-1-32 kamiminami, hirano-ku, osaka 547-0003, japan a-6175h-1ex-t printed in japan © 2002–2013 icom inc. Printed on recycled paper with soy ink..