{"product_id":"icom-at140-hf-1-6-30mhz-automatic-antenna-tuner","title":"Icom AT140 HF (1.6-30MHz) Automatic Antenna Tuner","description":"\u003ch2 data-path-to-node=\"2\"\u003eHF Automatic Antenna Tuner for Marine and Land Mobile Transceivers\u003c\/h2\u003e\n\u003ch3 data-path-to-node=\"3\"\u003eAdvanced weather-resistant antenna matching network engineered for 150W single sideband (SSB) communications.\u003c\/h3\u003e\n\u003cp\u003eThe \u003cb data-path-to-node=\"4\" data-index-in-node=\"4\"\u003eIcom AT140\u003c\/b\u003e is an authentic original equipment manufacturer heavy-duty automatic antenna tuner designed to deliver rock-solid impedance balancing across oceanic and remote land terrain environments. Engineered to connect with high-class marine single sideband (SSB) and commercial base transceivers, this high-performance system handles up to 150 Watts PEP of input power. The \u003cb data-path-to-node=\"4\" data-index-in-node=\"380\"\u003eIcom AT140 HF (1.6-30MHz) Automatic Antenna Tuner\u003c\/b\u003e enables operators to quickly match long-wire, backstay, or vertical whip antennas measuring 7 meters (23 feet) or longer, ensuring peak power transfer efficiency and a safe voltage standing wave ratio (VSWR) across challenging operations.\u003c\/p\u003e\n\u003cp\u003eHoused in a durable, completely weather-resistant acrylic case fitted with custom internal rubber gaskets, this marine-grade system can be installed externally near the base of the antenna element to minimize RF transmission line loss. Controlled by an advanced central processor, the unit rapidly runs automated matching cycles in roughly 2 to 3 seconds. For extreme convenience when alternating channels, the tuner features an integrated non-volatile electronic memory array capable of caching previous configurations for up to 45 unique frequencies, enabling rapid 1-second re-tuning when returning to an established band.\u003c\/p\u003e\n\u003cp\u003eTo preserve strict channel hygiene and prevent active interference with neighboring channels, the tuner implements a specialized low-power tune-up system that radiates only 300mW of RF energy from the antenna during active matching routines. The unit features built-in pass-thru tuning capability and pre-wired connection blocks to simplify hardware field terminations. This outdoor component draws its entire 13.6V DC operational power supply lines straight from the connected host radio via a shielded data control cable, bypassing any need for a distinct external power wire run. Operators should note that the physical long-wire antennas, copper grounding foil systems, linear high-power amplifiers, and core desktop transceiver decks are sold separately.\u003c\/p\u003e\n\u003ch3 data-path-to-node=\"7\"\u003eKey Features \u0026amp; Benefits\u003c\/h3\u003e\n\u003cul data-path-to-node=\"8\"\u003e\n\u003cli\u003e\n\u003cb data-path-to-node=\"8,0,0\" data-index-in-node=\"0\"\u003eWide Range HF Coverage\u003c\/b\u003e: Automatically matches frequencies across the 1.6 MHz to 30 MHz range when connected to an antenna element 7 meters or longer.\u003c\/li\u003e\n\u003cli\u003e\n\u003cb data-path-to-node=\"8,1,0\" data-index-in-node=\"0\"\u003eWeatherproof Acrylic Casing\u003c\/b\u003e: Engineered with a heavy-duty gasket-sealed outer shell to repel heavy rain, high humidity, salt spray, and oceanic environment stress.\u003c\/li\u003e\n\u003cli\u003e\n\u003cb data-path-to-node=\"8,2,0\" data-index-in-node=\"0\"\u003e45 Frequency Auto-Memories\u003c\/b\u003e: Recalls matching parameters instantly from onboard memory blocks to drop re-tuning times to roughly 1 second.\u003c\/li\u003e\n\u003cli\u003e\n\u003cb data-path-to-node=\"8,3,0\" data-index-in-node=\"0\"\u003eUltra-Low Tuning Radiation\u003c\/b\u003e: Emits a minimal 300mW RF footprint during setup to safeguard spectrum clarity and block interference with other vessels.\u003c\/li\u003e\n\u003cli\u003e\n\u003cb data-path-to-node=\"8,4,0\" data-index-in-node=\"0\"\u003ePass-Thru Tuning Integration\u003c\/b\u003e: Retains a bypass pathway to ensure continuous basic receiver signal flow even if power pathways are deactivated.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3 data-path-to-node=\"9\"\u003eSpecifications\u003c\/h3\u003e\n\u003ctable data-path-to-node=\"10\"\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eAttribute\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003eDetails\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan data-path-to-node=\"10,1,0,0\"\u003eBrand\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan data-path-to-node=\"10,1,1,0\"\u003eIcom\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan data-path-to-node=\"10,2,0,0\"\u003eModel\/SKU\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan data-path-to-node=\"10,2,1,0\"\u003eAT140\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan data-path-to-node=\"10,3,0,0\"\u003eProduct Type\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan data-path-to-node=\"10,3,1,0\"\u003eAutomatic Antenna Tuner\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan data-path-to-node=\"10,4,0,0\"\u003eFrequency Segment\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan data-path-to-node=\"10,4,1,0\"\u003eHF (1.6 – 30 MHz)\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan data-path-to-node=\"10,5,0,0\"\u003eMaximum Input Power\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan data-path-to-node=\"10,5,1,0\"\u003e150 Watts PEP \/ 100 Watts Continuous\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan data-path-to-node=\"10,6,0,0\"\u003eInput Impedance\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan data-path-to-node=\"10,6,1,0\"\u003e50 Ohm (SO239 Female Coaxial Terminal)\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan data-path-to-node=\"10,7,0,0\"\u003eTuning Power Required\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan data-path-to-node=\"10,7,1,0\"\u003e5 – 15 Watts (Nominal Rated)\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan data-path-to-node=\"10,8,0,0\"\u003eTuning Speed\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan data-path-to-node=\"10,8,1,0\"\u003e2 – 3 Seconds Average (15 Seconds Max)\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan data-path-to-node=\"10,9,0,0\"\u003eRe-tuning Speed\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan data-path-to-node=\"10,9,1,0\"\u003eApproximately 1 Second (Memorized Channel)\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan data-path-to-node=\"10,10,0,0\"\u003eTuning Accuracy\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan data-path-to-node=\"10,10,1,0\"\u003eVSWR 2.0:1 or Better\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan data-path-to-node=\"10,11,0,0\"\u003eMemory Capacity\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan data-path-to-node=\"10,11,1,0\"\u003e45 Onboard Saved Frequencies\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan data-path-to-node=\"10,12,0,0\"\u003ePower Supply Requirement\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan data-path-to-node=\"10,12,1,0\"\u003e13.6V DC (Supplied Directly from the HF Transceiver)\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan data-path-to-node=\"10,13,0,0\"\u003eCurrent Drain\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan data-path-to-node=\"10,13,1,0\"\u003eMax 2.0 Amps\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan data-path-to-node=\"10,14,0,0\"\u003eCase Construction\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan data-path-to-node=\"10,14,1,0\"\u003eWeather-Resistant Sealed Acrylic with Rubber Gaskets\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan data-path-to-node=\"10,15,0,0\"\u003eUsable Pole Diameter\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan data-path-to-node=\"10,15,1,0\"\u003e32 to 60 mm (1.3 to 2.4 Inches)\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch3 data-path-to-node=\"11\"\u003eCompatibility\u003c\/h3\u003e\n\u003ctable data-path-to-node=\"12\"\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003e\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003e\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003e\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003e\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan data-path-to-node=\"12,1,0,0\"\u003eM803\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan data-path-to-node=\"12,1,1,0\"\u003eF8101\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch3 data-path-to-node=\"17\"\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003ch4 data-path-to-node=\"18\"\u003eIs the primary radio control interface cable included inside this package box?\u003c\/h4\u003e\n\u003cp\u003eNo, this SKU comprises the automatic antenna tuner hardware and basic mechanical mounting brackets. The necessary multi-conductor shielded control interface lines must be purchased as separate accessories.\u003c\/p\u003e\n\u003ch4 data-path-to-node=\"20\"\u003eCan I mount this antenna tuner on an open deck exposed to ocean water sprays?\u003c\/h4\u003e\n\u003cp\u003eYes, the housing is constructed with an air-tight acrylic shell and moisture-blocking rubber perimeter gaskets specifically designed for exposed outdoor marine mast or bulkhead installations.\u003c\/p\u003e\n\u003ch4 data-path-to-node=\"22\"\u003eWhat is the absolute minimum wire size needed to operate down to 1.6 MHz?\u003c\/h4\u003e\n\u003cp\u003eTo tune across the full specified range down through the lower 1.6 MHz band lines, your long-wire antenna or whip configuration must measure a minimum of 7 meters (23 feet) in length.\u003c\/p\u003e\n\u003ch4 data-path-to-node=\"24\"\u003eDoes this tuner require an independent marine grounding setup?\u003c\/h4\u003e\n\u003cp\u003eYes, a low-resistance electrical pathway to a heavy ground counterpoise plate, external hull anode plane, or wide copper ground strip is vital to track accurate VSWR levels.\u003c\/p\u003e\n\u003ch4 data-path-to-node=\"26\"\u003eWill this automatic matcher function safely with a 500W commercial power deck?\u003c\/h4\u003e\n\u003cp\u003eNo, this unit is engineered strictly for 150W-class SSB and HF marine radios. Passing higher wattage tiers through this component will trigger an instant thermal or inductive overload.\u003c\/p\u003e\n\u003ch4 data-path-to-node=\"28\"\u003eWhy does the tuner limit its transmission output to 300mW during setup?\u003c\/h4\u003e\n\u003cp\u003eLimiting the active tune power to a minimal 300mW baseline ensures that the host radio avoids radiating heavy output spikes, keeping localized marine data frequencies safe from cross-talk.\u003c\/p\u003e\n\u003cp data-path-to-node=\"29\"\u003e \u003c\/p\u003e\n\u003ch3 data-path-to-node=\"30\"\u003eWarranty\u003c\/h3\u003e\n\u003cp data-path-to-node=\"31\"\u003e1-year manufacturer’s warranty.\u003c\/p\u003e","brand":"Icom","offers":[{"title":"Default Title","offer_id":48021842854062,"sku":"AT140","price":599.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0062\/0845\/4744\/files\/AT140a.png?v=1782418115","url":"https:\/\/www.atlanticradiocorp.com\/products\/icom-at140-hf-1-6-30mhz-automatic-antenna-tuner","provider":"Atlantic Radio Communications Corp. 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