Icom AT-141 User's Manual
Contents
1. 2 Strip the cable as shown below Soft solder the cen ter conductor the entire length of the exposed braid 1 2 mm 10 mm soft solder 10 mm zz36 inches INSTALLATIONS 2 3 Slide the connector body over the cable and sol der as shown below Solder Solder 4 Screw the coupling ring onto the connector body n E Mounting Attach the AT 141 either horizontally or vertically with one of the water drains facing downwards After mounting remove the screw in the water drain Mounting on a Mast Metal pole Mast Using U bolts d Metal pole U bolt U bolt plate Flat washer L Spring washer Flat washer S WARNING Mount the AT 141 securely with the supplied nuts and bolts Otherwise vibrations and shocks due to waves etc could loosen the antenna tuner making if fall causing personal injury Mounting on a flat surface Using nuts and bolts Using self tapping Nut gt rm cm Flat m washer S Spring 4 pos washer Flat washer L 22222221 Flat gt Weatherproof T washer L Hex head bot gt Drill a hole here Diameter 7 8 mm 9 82 5 16 inches E 2 INSTALLATIONS Cable connections CD Connect the coaxial cable and the control cable to 4 Connect the coaxial cable and the control cable to the AT 12. voltage 8 Approx 7 5 V V 6 4 2 Less than 1 V to Y start tuning 0 i s Time For tuner through operation Less than 250 msec Key voltage KEY During automatic tuning the AT 141 grounds the key voltage line and the HF transceiver reduces output power During automatic tuning Pm 8 Approx 7 5 V V 4 2 0 Grounded Time 4 UNIT DESCRIPTION AND SPECIFICATIONS E Unit description Ground terminal Water drain screw Antenna cable receptacle Antenna terminal gt 35 Mounting plate 91 5 mm Specifications e Frequency coverage 1 6 30 MHZ with 7 m or longer antenna element Power supply requirement 13 6 V DC supplied from HF transceiver Current drain 2A Operating temperature range 30 C to 60 C Weight approx 2 5 kg Antenna connector SO 239 50 Q Max Input power 150 W PEP 100 W continuous e Automatic tuning time Approx 2 3 sec general condition Max 15 sec Approx 1 sec re tuning for a memorized frequency e Automatic tuning accuracy SWR 2 0 1 after tuning except for multiples of 122 All stated specifications are subject to change without notice or obligation Count A 6472H 1EU Printed in Japan 2005 Icom Inc Icom America Inc Corporate Headquarters 2380 116th Avenue N E Bellevue WA 98004 U S A Phone 1 425 454 8155 Fax 1 425 454
3. 34 93 590 26 70 Fax 34 93 589 04 46 URL http www icomspain com E mail icom icomspain com Icom UK Ltd Unit 9 Sea St Herne Bay Kent CT6 8LD U K Phone 44 01227 741741 Fax 44 01227 741742 URL http www icomuk co uk E mail info icomuk co uk Icom France S a Zac de la Plaine 1 Rue Brindejonc des Moulinais BP 5804 31505 Toulouse Cedex France Phone 33 5 61 36 03 03 Fax 33 5 61 36 03 00 URL http www icom france com E mail icom icom france com Icom Polska Sopot 3 Maja 54 Poland Phone 48 58 550 7135 Fax 48 58 551 0484 E mail icompolska icompolska com pl 1 1 32 Kamiminami Hirano ku Osaka 547 0003 Japan
4. 1509 URL http www icomamerica com E mail sales icomamerica com Customer service Phone 425 454 7619 Icom Canada Glenwood Centre 150 6165 Highway 17 Delta B C V4K 5B8 Canada Phone 1 604 952 4266 Fax 1 604 952 0090 URL http www icomcanada com E mail info icomcanada com Icom Australia Pty Ltd A B N 88 006 092 575 Unit 1 103 Garden Road Clayton Victoria 3168 Australia Phone 61 03 9549 7500 Fax 61 03 9549 7505 URL http www icom net au E mail sales Qicom net au Icom New Zealand 146A Harris Road East Tamaki Auckland New Zealand Phone 64 09 274 4062 Fax 64 09 274 4708 URL http www icom co nz E mail inquiries icom co nz Asia Icom Inc 6F No 68 Sec 1 Cheng Teh Road Taipei Taiwan R O C Phone 886 02 2559 1899 Fax 886 02 2559 1874 URL http www asia icom com E mail sales asia icom com Beijing Icom Ltd Room C01 10th Floor Long Silver Mansion No 88 Yong Ding Road Haidian District Beijing 100039 China Phone 86 010 5889 4250Fax 86 010 5889 4250 URL http www bjicom com E mail bjicom bjicom com Icom Inc Icom Europe GmbH Communication Equipment Himmelgeister Str 100 D 40255 D sseldorf Germany Phone 49 0211 346047 Fax 49 0211 333639 URL http www icomeurope com E mail info icomeurope com Icom Spain S L Ctra Rubi No 88 Edificio Can Castanyer 08190 Sant Cugat del Valles Barcelona Spain Phone
5. Matches all bands The AT 141 matches any frequency on every HF ma rine band For example the tuner matches a 7 m 23 ft long wire antenna across 1 6 30 MHz Full automatic tuning Just push the TUNE key on the transceiver and the AT 141 adjusts immediately to the minimum SWR of any frequency on any HF marine band HF operation on any size ship The AT 141 allows you HF operation where antenna element length is restricted due to space Weather resistant The AT 141 is housed in a durable completely weather resistant ASA case with a rubber gasket The antenna tuner can be conveniently installed both on the deck or in the cabin near the antenna element Simple installation Installation is simple Just connect the control and an tenna cables You never need to open the cover 45 memories for shorter tuning time To decrease the tune up time the AT 141 automatically stores the matching conditions for up to 45 frequencies Re tuning for a memorized frequency takes approx 1 sec Super capacitor for memory backup Even if the AT 141 is not used for approx 1 week the built in super capacitor backs up contents of the 45 memories Low power tune up The AT 141 emits low output power during tuning This feature reduces the possibility of causing interference to other stations Tuner through function The tuner through function is built into the AT 141 This function helps improve receiver gain depending on the antenna elemen
6. 41 as illustrated below the transceiver as illustrated below 2 Cover both the antenna and the control cable con 5 Ground the transceiver AT 141 and shield cable of nectors with rubber vulcanizing tape and fix it with the control cable via the ground terminal a vinyl tape to prevent water seeping into the con See p 2 for grounding details nector Z IMPORTANT AT 141 NEVER ground the AT141 via the mounting plate It is not connected to ground internally 3 Fix both of the coaxial and control cables to pro tect the inside connections Ground terminal Mounting plate O MQ LL Z DO NOT pull the antenna and control cable re 2 ceptacles This may cause disconnection in the Z AT 141 internal connector damaged or bad Z connection Icom s HF transceiver SS 2 lt lt T di AT 141 4 Grounding CONTROL CABLE SIGNALS B Terminal information Consider the following points when using non Icom transceiver Terminal Description KEY voltage Grounded during tuning Max current drain 100 mA 13 6 13 6 V DC input terminal Max current drain 2 STAR Receives start voltage Max current drain 1 mA ANTC Antenna current detector output Start voltage STAR When start voltage less than 1 V is received the AT 141 begins automatic tuning More than 350 msec Start gt
7. CCESSORIES The following accessories are supplied with the AT 141 Aa E TH SA TTT 00060 3999151 9 0 CEO 200000000 00000000 9 Mn 9 m coo mr mumm HH Qty a diceres 2 2 U bolt plates censum 2 3 Flat washers M6 large 8 4 Flat washers small 4 5 Spring washers 6 8 Nuts M6 8 7 Hex head bolts M6x50 4 Self tapping screws AO 6x30 4 9 Weatherproof cap 1 4 pin connector 1 Connector pis eer 4 2 Ground cable 412 1 Icom Icom Inc and the cow logo are registered trademarks of Icom Incorporated Japan in the United States the United King dom Germany France Spain Russia and or other countries MISCELLANEOUS ITEMS The following parts are additionally required for instal lation but are not supplied with the AT 141 Purchase these parts locally CD AWG 14x4 conductor shielded cable Icom offers an optional OPC 1465 CONTROL CABLE Length 10 m 32 8 feet 2 50 Q coaxial cable 3 PL 259 connectors FEATURES
8. O ICOM INSTRUCTION MANUAL HF AUTOMATIC ANTENNA TUNER 141 Icom Inc FOREWORD PRECAUTIONS 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 INSTRUCTIONS carefully and com pletely before using the AT 141 SAVE THIS INSTRUCTION MANUAL This in struction manual contains important safety and instal lation instructions EXPLICIT DEFINITIONS Word Definition WARNING Personal injury fire hazard or electric shock may occur CAUTION Equipment damage may occur If disregarded inconvenience only No NOTE personal injury fire hazard or electric shock A DANGER HIGH VOLTAGE NEVER touch the antenna terminal ground terminal antenna or counterpoise while transmitting Place the AT 141 an tenna and counterpoise in positions where no one can touch them NEVER use without a ground connection NEVER transmit during internal adjustment This may cause an electric shock USE the ground terminal for ground connection The mounting plate is not connected internally DO NOT operate your HF marine transceiver without running the boat s engine AVOID using the AT 141 in areas where the temper ature is below 30 C or above 60 C SUPPLIED A
9. cable tween the transceiver and the AT 141 Refer to Control cable below Refer to p 5 Cable connections 2 Connect and solder the PL 259 connector to the 8 Connect an antenna ship s ground or counter coaxial cable poise Refer to p 1 Antenna for ship and p 2 Ground and Refer to p 4 PL 259 connector counterpoise 3 Mount the AT 141 in the desired location Refer to p 4 Mounting B Control cable Between the AT 141 and HF marine transceiver con OPC 1465 for IC M801E nect 4 control signal lines as shown below To prevent RF feedback use a 4 conductor shielded cable Con Refer to p 6 Terminal information for details nect the shield line to the GND terminal on the trans ceiver Icom offers 10 m 32 8 ft long optional control cables as at right o When connecting to Icom IC M801E Use the optional OPC 1465 or assemble the desired length 4 con ductor shielded cable and the connector kits supplied with the trans ceiver and the tuner To transceiver To AT 141 CT ANTC Black 13 6 Red C STAR White C KEY Green ANTC Black 13 6 Red STAR White KEY Green GND B PL 259 connector D 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 Coupling 30 mm 10 mm soft solder
10. e filters for alternators fluorescent lights etc Ask your Dealer for details E Ground and counterpoise Why a ship s ground is required The AT 141 s ground terminal MUST be connected to your ship s ground Grounding prevents electric shocks interference to other equipment and other problems Grounding also ensures effective signal transmission DANGER NEVER connect the ground terminal to the following points These connections may cause an explosion or electric shocks Gas or electrical pipe Fuel tank or oil catch pan IMPORTANT The mounting plate is NOT con nected to the AT 141 s internal ground Ideal ground points One of following points is ideal External ground plate External copper screen External copper foil Good ground points If electrically connected to sea water one of the fol lowing points is usable Stainless steel stanchion Through mast Through hull Metal water tank Undesirable ground points AVOID the following points if possible These con nections may cause noise or electrolysis Engine block Ship s DC battery ground Electrolysis All ground cables from the AT 141 HF transceiver etc on your ship should be connected to only 1 ship s ground AVOID connection to 2 or more points Voltage dif ference between 2 or more ship s grounds may cause electrolysis AVOID connection between dissimilar metals where an electric current is p
11. lement length 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 4 MHz band 7 m 23 0 feet or longer 3 m 9 8 feet or longer The longer the antenna element the better the an tenna efficiency Undesirable antenna element lengths AVOID multiples of 12 half wavelength for an tenna element lengths since tuning becomes difficult L Antenna element length to be avoided m f Operating frequency MHz n Natural number n 1 2 3 Le 300 x xn f 2 Example At an operating frequency of 16 MHz avoid the fol lowing antenna element lengths 300 1 L 46 x mon n a 9 4 18 8 1m zz 39 inches For example if 15 m is selected for an antenna ele ment length you have no problem in the 1 6 25 MHz marine bands range Backstay operates as a long wire antenna Whip antenna NOTE Keep antennas as far away from other objects as possible especially metal objects B 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 ANTENNA SYSTEM 1 To prevent erroneous indications keep cables as far away as possible from the flux gate compass Use suitable nois
12. resent These connections may cause electrolysis Counterpoise If your ship is made of FRP etc and a good ship s ground is not available connect a counterpoise 14 radial for each band Ground terminal AT 141 quarter wavelength radial for each band is suit able for a counterpoise Install the counterpoise di rectly below the AT 141 s ground terminal Insulate the ends of each radial from other metal objects Lay out the radial horizontally and as straight as possible L Counterpoise length for the operating frequency m f Operating frequency MHz Example At an operating frequency of 16 MHz use a counter poise with the following length 300 1 1 1 zz 39 inches Ground cable For best results use the heaviest gauge wire or metal strap available Make the distance between the AT 141 s ground terminal and ship s ground as short as possible Supplied ground cable can be used for ground con nection to a through mast Confirm that the through mast is electrically connected to sea water A WARNING When grounding to metal hull Use a Zinc anode to protect the hull from electroly sis Ask your technical dealer installer or refer to a tech nical book etc for RF ground details 2 INSTALLATIONS B installation outline D Connect a control cable and 4 conductor shielded 4 Connect the control and the coaxial cables be
13. t length used and operating fre quency TABLE OF CONTENTS FOREWORD IMPORTANT EXPLICIT DEFINITIONS i PRECAUTIONS i SUPPLIED ACCESSORIES i MISCELLANEOUS ITEMS ii FEATURES ii TABLE OF CONTENTS ii 1 ANTENNA SYSTEM 1 2 B Antenna for ship 1 Coaxial cable 2 E Ground and counterpoise 2 2 INSTALLATIONS 3 5 B Installation outline 3 E Control 3 PL 259 4 B Mounting 4 Cable connections 5 3 CONTROL CABLE SIGNALS 6 Bi Terminal information 4 UNIT DESCRIPTION AND SPECIFICATIONS 7 B Unit 7 B Specifications 7 EN ANTENNA SYSTEM E Antenna for ship Required antenna e
Download Pdf Manuals
Related Search