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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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