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INSTRUCTION MANUAL HF AUTOMATIC ANTENNA TUNER AT140 FOREWORD PRECAUTIONS Thank you for purchasing the AT140 HF AUTO R DANGER HIGH VOLTAGE NEVER touch MATIC ANTENNA TUNER the antenna terminal ground terminal antenna or counterpoise while transmitting Place the AT140 an The AT140 is designed primarily for use with Icom HF tenna and counterpoise in positions where no one can transceivers touch them Refer to your HF transceiver instruction manual for op NEVER use without a ground connection eration If you have any questions contact your dealer NEVER transmit during internal adjustment This may cause an electric shock IMPORTANT USE the ground terminal for ground connection The mounting plate is not connected internally READ ALL INSTRUCTIONS carefully and com pletely before using the AT140 SAVE THIS INSTRUCTION MANUAL This in struction manual contains important safety and instal Ground terminal lation instructions EXPLICIT DEFINITIONS Mounting plate Word Definition Personal injury fire hazard or electric R WARNING shock may occur DO NOT operate your HF marine transceiver without CAUTION Equipment damage may occur running the boats engine If disregarded inconvenience only No AVOID using the AT140 in areas where the temper NOTE personal injury fire hazard or electric ature is below 30C 22F or above 60C shock 140F SUPPLIED ACCESSORIES The following accessories are supplied with the AT140 Qty q Ubolts 2 w Ubolt plates 2 q u e Flat washers M6 large 8 r Flat washers M6 small 4 w t Spring washers M6 8 i y Nuts M6 8 u Hex head bolts M650 4 e o i Selftapping screws A0 630 4 0 1 o Weatherproof cap 1 r 0 4pin6pin connector 1 t 1 Connector pins 4 y 2 Ground cable OPC412 1 2 The supplied connector and pins are differ according to ver sion Icom Icom Inc and the are registered trademarks of Icom Incorporated Japan in the United States the United King dom Germany France Spain Russia andor other ITEMS TABLE OF CONTENTSThe following parts are additionally required for instal FOREWORD ilation but are not supplied with the AT140 IMPORTANT iPurchase these parts locally EXPLICIT DEFINITIONS iq AWG 144conductor shielded cable Icom offers an optional OPC1147N CONTROL CABLE PRECAUTIONS i Length 10 m 328 feet SUPPLIED ACCESSORIES iw 50 coaxial cablee PL259 connectors MISCELLANEOUS ITEMS ii FEATURES ii TABLE OF CONTENTS iiFEATURES 1 ANTENNA SYSTEM 12Matches all bands I Antenna for ship 1The AT140 matches any frequency on every HF ma I Antenna for land operation 1rine band For example the tuner matches a 7 m 23 ft I Coaxial cable 2longwire antenna across 1630 MHz I Ground and counterpoise 2Full automatic tuning 2 INSTALLATIONS 35Just push the TUNE switch on the transceiver and I lnstallation outline 3the AT140 adjusts immediately to the minimum SWR I Control cable 3of any frequency on any HF marine band I PL259 connector 4 I Mounting 4HF operation on any size ship I Cable connections 5The AT140 allows you HF operation where antennaelement length is restricted due to space 3 CONTROL CABLE SIGNALS 67 I Terminal information 6Weather resistant I Transceiver setting 7The AT140 is housed in a durable completely ASA case with a rubber gasket The antenna 4 UNIT DESCRIPTION AND can be conveniently installed both on the deck or 8in the cabin near the antenna element I Unit description 8 I Specifications 8Simple is simple Just connect the control and antenna cables You never need to open the cover45 memories for shorter tuning timeTo decrease the tuneup time the AT140 the matching conditions for up to 45 for a memorized frequency takes approx 1secSuper capacitor for memory backupEven if the AT140 is not used for approx 1 week thebuiltin super capacitor backs up contents of the 45memoriesLow power tune upThe AT140 emits low output power during tuning Thisfeature reduces the possibility of causing interferenceto other stationsTuner through functionThe tuner through function is built into the AT140 Thisfunction helps improve receiver gain depending on theantenna element length used and operating frequency ii 1 ANTENNA SYSTEM I Antenna for ship Required antenna element length Required antenna element length to achieve full per formance varies according to the lowest frequency Insulator The lowest frequency Required antenna element length Backstay operates as 16 MHz band 7 m 230 feet or longer a longwire antenna 4 MHz band 3 m 98 feet or longer The longer the antenna element the better the an tenna efficiency Undesirable antenna element lengths Insulator 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 3 300 1 L n f 2 Whip antenna Example At an operating frequency of 16 MHz avoid the fol lowing antenna element lengths 300 1 L n 94 188 16 2 1m 39 inches For example if 15 m is selected for an antenna ele ment length you have no problem in the 1625 MHz NOTE Keep antennas as far away from other objects marine bands range as possible especially metal objects I Antenna for land operation In some countries HF transceivers can be used for Refer to the AH2b instruction manual for the AH2b land mobile operation Ask your Icom Dealer for de and AT140 installation to your vehicle Ask your Icom tails since the radio law varies according to each Dealer for details country Connect a suitable antenna element for a base sta For land mobile operation on 4 MHz and above an tion To achieve full performance refer to Required optional AH2b ANTENNA ELEMENT is available antenna element length above The AH2b includes a sturdy tow hook mount system for holding a 25 m 82 feet stainless steel antenna element plus all the necessary hardware AH2b1 ANTENNA SYSTEM 1I Coaxial cableInsulate the leadin cable of the AT140 antenna ter To prevent erroneous indications keep cables as farminal and antenna element from other metal objects away as possible from the flux gate compassTo prevent interference keep cables as far as possi Use suitable noise filters for alternators fluorescentble from an antenna electric pump and other elec lights etc Ask your Dealer for detailstronic equipmentI Ground and a ships ground is required AT140s ground terminal MUST be connected If your ship is made of FRP etc and a good shipsto your ships ground Grounding prevents electric ground is not available connect a interference to other equipment and other 14radial forproblems Grounding also ensures effective signal each Ground terminalDANGER NEVER connect the ground terminal tothe following points These connections may causean explosion or electric shocks Gas or electrical pipe Fuel tank or oilcatch pan AT140IMPORTANT The mounting plate is NOT con 14 quarter wavelength radial for each band is suitnected to the AT140s internal ground able for a counterpoise Install the counterpoise diIdeal ground points rectly below the AT140s ground terminal InsulateOne of following points is ideal the ends of each radial from other metal objects Lay External ground plate out the radial horizontally and as straight as possible External copper screen L Counterpoise length for the operating frequency m External copper foil f Operating frequency MHzGood ground points 300 1If electrically connected to sea water one of the fol L f 4lowing points is usable Stainless steel stanchion Example Through mast At an operating frequency of 16 MHz use a counter Through hull poise with the following length Metal water tank 300 1 L 47 mUndesirable ground points 16 4AVOID the following points if possible These con 1m 39 inchesnections may cause noise or electrolysis Engine block Ground cable Ships DC battery ground For best results use the heaviest gauge wire or metal strap available Make the distance between the ATElectrolysis 140s ground terminal and ships ground as short asAll ground cables from the AT140 HF transceiver possibleetc on your ship should be connected to only 1 shipsground Supplied ground cable can be used for ground conAVOID connection to 2 or more points Voltage dif nection to a through mast Confirm that the throughference between 2 or more ships grounds may cause mast is electrically connected to sea R WARNING When grounding to metal hullAVOID connection between dissimilar metals where Use a Zinc anode to protect the hull from electrolyan electric current is present These connections may siscause electrolysis Ask your technical dealer installer or refer to a tech nical book etc for RF ground details 2 2 INSTALLATIONS I Installation outline q Connect a control cable and 4conductor shielded r Connect the control cable and the coaxial between cable the transceiver and the AT140 Refer to Control cable below Refer to p 5 Cable connections w Connect and solder the PL259 connector to the t Connect an antenna ships ground or counter coaxial cable poise Refer to p 4 PL259 connector Refer to p 1 Antenna for ship and p 2 Ground and counterpoise e Mount the AT140 in the desired location Refer to p 4 Mounting I Control cable Between the AT140 and HF marine transceiver con OPC566 for ICM710RT M700PRO nect 4 control signal lines as shown below To prevent OPC1147N for ICM802 RF feedback use a 4conductor shielded cable Con nect the shield line to the GND terminal on the trans Refer to p 6 Terminal information for details ceiver Icom offers 10 m 328 ft long optional control cables as at right D When connecting to Icom ICM802 To AT140 To transceiver Use the optional OPC1147N or assemble the desired length 4 conductor shielded cable and the connector kits supplied with the E Black transceiver and the tuner E Black 136 Red 136 Red STAR White STAR White KEY Green KEY Green GND GND OPC1147 OPC1147N D When connecting to Icom ICM710RT ICM700PRO Use the optional OPC5661147N either the connector to the AT140 To AT140 or the transceiver requires assem To transceiver bly or assemble the desired length STAR White 4conductor shielded cable and the KEY Green connector kits supplied with the transceiver and the tuner E Black 136 Red STAR White KEY Green 136 Red GND E Black GND OPC1147 OPC1147N D When connecting to Icom ICM700TY IC78 Use the optional OPC1147N this To AT140 connector only requires assembly or assemble the desired length 4 To transceiver conductor shielded cable and the connector kits supplied with the E Black transceiver and the tuner E Black 136 Red 136 Red STAR White STAR White KEY Green KEY Green GND GND OPC1147 OPC1147N3 INSTALLATIONS 2I PL259 connectorq Slide the coupling ring over the coaxial cable Strip e Slide the connector body over the cable and sol the cable jacket and pull back to reveal 10 mm of der as shown below braid Solder Solder Soft solder the exposed braid and then pull out the jacket Coupling 30 mm r Screw the coupling ring onto the connector body 10 mm soft solderw Strip the cable as shown below Soft solder the cen ter conductor the entire length of the exposed braid 12 mm 10 mm soft solder 10 mm 38 inchesI MountingAttach the AT140 either horizontally or vertically with Mounting on a flat surfaceone of the water drains facing downwards After Using nuts and bolts Using remove the screw in the water drain screwsMounting on a MastMetal pole Mast Using Ubolts Metal pole Ubolt Ubolt plate Flat washerL Spring washer Flat washerS Nut Nut Flat washerS Spring washer Flat washerLWARNING Mount the AT140 securely with thesupplied nuts and bolts Otherwise vibrations and Flat washerL Weatherproof capshocks due to waves etc could loosen the antenna Hex head Drill a hole here bolt Diameter78 mm 932516 inchestuner making if fall causing personal injury 4 2 INSTALLATIONS I Cable connections q Connect the coaxial cable and the control cable to r Connect the coaxial cable and the control cable to the AT140 as illustrated below the transceiver as illustrated below w Cover both the antenna and the control cable con t Ground the transceiver AT140 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 pgs 2 and 710 for grounding details nector IMPORTANT AT140 NEVER ground the AT140 via the mounting plate It is not connected to ground internally Rubber vulcanizing tape Ground terminal e Fix both of the coaxial and control cables to pro Mounting plate tect the inside connections DO NOT pull the antenna and control cable re ceptacles This may cause disconnection in the AT140 internal connector damaged or bad connection Icom HF transceiver AT140 Ground 28 ft N 10 m 3 P C 1147 Ground O5 CONTROL CABLE SIGNALS 3I Terminal the following points when using a nonIcom Start voltage When a start voltage less than 1 V is received the Terminal Description AT140 begins automatic tuning KEY Key voltage Grounded during tuning More than 350 msec Max current drain 100 mA Start voltage 8 Approx 75 V 136 136 V DC input terminal V Max current drain 2 A 6 4 STAR Receives start voltage 2 Less than 1 V to Max current drain 1 mA start tuning 0 E Ground terminal for above signals Time For tuner through operation Less than 250 msec Key voltage KEY During automatic tuning the AT140 grounds the key voltage line and the HF transceiver reduces output power During automatic tuning Key voltage 8 Approx 75 V V 6 KEY 4 STAR 136 2 E 0 Grounded Time Connector shape may differ according to version If the key voltage is more than 8 V switch the mode switch S1 to OFF mode lower position S1 NORMAL mode OFF mode E 136 STAR KEYMode switch S1 6 3 CONTROL CABLE SIGNALS I Transceiver setting ICM700 with serial number 2500 and below ICM710RT ICM700PRO In the ICM700 change the TUNE switch setting In the ICM710RT and ICM700PRO select the an from the 1 position to the 2 position Confirm that tenna tuner type as AH3 in initial set mode See the KEY switch is in the 2 position Refer to the IC ICM710RT instruction manual p 13 or ICM700PRO M700 instruction manual p 9 for details instruction manual p 11 for details KEY TUNE ICM802 In the ICM802 select the antenna tuner type as AT Confirm 2 position 140 in initial set mode See ICM802 instruction man Select 2 position ual p 49 for details NonIcom HF transceiver Other ICM700 and ICM700TY Select correct settings for the start voltage and key Nothing necessary to set However the tuner through voltage Refer to your HF transceiver instruction man function is not available when using the AT140 with ual for details ICM700TY IC78 NOTE When a nonIcom automatic tuner was pre In the IC78 select the antenna tuner type as 4 AH viously used confirm the tuner settings Refer to 4 in initial set mode See IC78 instruction manual the instruction manual for details p 32 for details With AT130 setting use of the AT140 is possible how ever the tuner through function cannot be operated7 UNIT DESCRIPTION AND SPECIFICATIONS 4I Unit description 340 mm 134 in in 230 mm 91 80 mm 31 in Ground terminal Mounting plate Water drain screw Antenna cable receptacle Control cable receptacle Antenna terminal Mounting plate 915 mm 36 inI Specifications Frequency coverage 1630 MHz with 7 m 230 feet or longer antenna element Power supply requirement 136 V DC supplied from HF transceiver Current drain Max 2 A Operating temperature range 30C to 60C 22F to 140F Weight 25 kg 55 lb Antenna connector SO239 50 Max Input power 150 W PEP 100 W continuous Automatic tuning time Approx 23 sec general condition Max 15 sec Approx 1 sec retuning for a memorized frequency Automatic tuning accuracy SWR 201 after tuning except for multiples of 12 All stated specifications are subject to change without notice or obligation 8 Icom America Inc Icom Europe GmbH Corporate Headquarters Communication Equipment 2380 116th Avenue NE Bellevue WA 98004 USA Himmelgeister Str 100 Phone 1 425 4548155 Fax 1 425 4541509 D40255 Dsseldorf Germany URL Phone 49 0211 346047 Fax 49 0211 333639 Email URL Customer service Email Phone 425 4547619 Icom Canada Icom Spain SL Glenwood Centre 1506165 Highway 17 Delta Crta de Gracia a Manresa Km 14750 08190 Sant BC V4K 5B8 Canada Cugat del Valles Barcelona SPAIN Phone 1 604 9524266 Fax 1 604 9520090 Phone 34 93 590 26 70 Fax 34 93 589 04 46 URL URL Email Email Icom Australia Pty Ltd Icom UK Ltd ABN 88 006 092 575 Unit 9 Sea St Herne Bay Kent CT6 8LD UK 290294 Albert Street Brunswick Victoria 3056 Phone 44 01227 741741 Fax 44 01227 741742 Australia URL Phone 61 03 9387 0666 Fax 61 03 9387 0022 Email infoicomukcouk URL Email salesicomnetau Icom New Zealand Icom France Sa 146A Harris Road East Tamaki Auckland New Zealand Zac de la Plaine 1 Rue Brindejonc des Moulinais Phone 64 09 274 4062 Fax 64 09 274 4708 BP 5804 31505 Toulouse Cedex France URL Phone 33 5 61 36 03 03 Fax 33 5 61 36 03 00 Email URL Email Asia Icom Inc Icom Polska 6F No 68 Sec 1 ChengTeh Road Taipei Taiwan ROC Sopot 3 Maja 54 Poland Phone 886 02 2559 1899 Fax 886 02 2559 1874 Phone 48 58 550 7135 Fax 48 58 551 0484 URL Email Email Beijing Icom Ltd 1305 Wanshang Plaza Shijingshan Road Beijing China Phone 86 010 6866 6337 Fax 86 010 6866 3553 Email in Japan 20022004 Icom Inc 1132 Kamiminami Hiranoku Osaka 5470003 Japan

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