{"product_id":"icom-ah705-hf-50mhz-1-8-54mhz-automatic-antenna-tuner","title":"Icom AH705 HF\/50 MHz (1.8-54MHz) Automatic Antenna Tuner","description":"\u003ch2 data-path-to-node=\"2\"\u003eHF\/50 MHz Automatic Antenna Tuner for Portable SDR Transceivers\u003c\/h2\u003e\n\u003ch3 data-path-to-node=\"3\"\u003eCompact, weather-resistant outdoor impedance matching system engineered specifically for the IC705 QRP multi-band station.\u003c\/h3\u003e\n\u003cp\u003eThe \u003cb data-path-to-node=\"4\" data-index-in-node=\"4\"\u003eIcom AH705\u003c\/b\u003e is an authentic original equipment manufacturer automatic antenna tuner engineered to optimize field-deployable portable communication stations. Purpose-built to pair seamlessly alongside the iconic IC705 portable software-defined radio (SDR) transceiver, this micro-sized component delivers fast, effortless matching across the entire HF and 50 MHz spectrum. The \u003cb data-path-to-node=\"4\" data-index-in-node=\"379\"\u003eIcom AH705 HF\/50 MHz (1.8-54MHz) Automatic Antenna Tuner\u003c\/b\u003e enables multi-band operators to match standard 50-ohm resonant antennas like dipoles and Yagis, as well as unstructured non-resonant long-wire antenna setups, ensuring optimal power transfer and a safe voltage standing wave ratio (VSWR) metric under variable field environments.\u003c\/p\u003e\n\u003cp\u003eBuilt to sustain rugged tactical and outdoor deployments, the compact chassis features an IP54-certified dust-protected and splash-resistant construction matrix to shield delicate internal matching circuits from ambient moisture. The unit is designed with power-saving latching relays that draw power only during active tuning cycles, dropping standby battery consumption to near zero. For total field deployment independence, the tuner incorporates a dual-mode power architecture, allowing it to run smoothly off two internal AA alkaline dry cells or receive clean external 13.8V DC power directly from an independent base battery pack.\u003c\/p\u003e\n\u003cp\u003eOperators should note that this portable system is a specialized low-power QRP accessory rated to handle a maximum RF power threshold of 10 Watts PEP. Attempting to pass high-wattage desktop base amplification through this unit will cause immediate internal hardware failure. The standalone portable SDR transceiver chassis, external base station linear amplifiers, long-wire antenna wire spools, and secondary multi-unit replacement rechargeable battery packs 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\"\u003eWideband Impedance Coverage\u003c\/b\u003e: Automatically tracks and matches frequencies from 1.8 MHz to 54 MHz using long-wire or dipole elements.\u003c\/li\u003e\n\u003cli\u003e\n\u003cb data-path-to-node=\"8,1,0\" data-index-in-node=\"0\"\u003eOne-Touch Radio Integration\u003c\/b\u003e: Initiates full electronic tuning cycles instantly at the press of the native [TUNER] button on the host transceiver control panel.\u003c\/li\u003e\n\u003cli\u003e\n\u003cb data-path-to-node=\"8,2,0\" data-index-in-node=\"0\"\u003eIP54 Weatherized Integrity\u003c\/b\u003e: Protected by sealed outer housing skins and rugged terminal jack covers to repel dust storms and moisture splashes.\u003c\/li\u003e\n\u003cli\u003e\n\u003cb data-path-to-node=\"8,3,0\" data-index-in-node=\"0\"\u003eLow-Power Latching Relays\u003c\/b\u003e: Utilizes state-of-the-art internal latching relays to eliminate continuous electrical drain between active transmission periods.\u003c\/li\u003e\n\u003cli\u003e\n\u003cb data-path-to-node=\"8,4,0\" data-index-in-node=\"0\"\u003eDual Power Delivery Paths\u003c\/b\u003e: Features a versatile power grid accepting either two standard AA batteries for lightweight portables or direct 13.8V DC input lines.\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\"\u003eAH705\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 Band\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan data-path-to-node=\"10,4,1,0\"\u003eHF \/ 50 MHz (1.8 – 54 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\"\u003eMax Input Power\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan data-path-to-node=\"10,5,1,0\"\u003e10 Watts PEP\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\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 Req.\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan data-path-to-node=\"10,7,1,0\"\u003e5 Watts \/ 10 Watts\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\"\u003eTuning Accuracy\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan data-path-to-node=\"10,9,1,0\"\u003eLess than 1: 2.0 VSWR\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\"\u003eInternal Memories\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan data-path-to-node=\"10,10,1,0\"\u003e45 Tuned Channels\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\"\u003ePower Sources\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan data-path-to-node=\"10,11,1,0\"\u003e2x AA Alkaline Batteries or External 13.8V DC (±15%)\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\"\u003eCurrent Drain\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan data-path-to-node=\"10,12,1,0\"\u003e\u0026lt; 300 mA (Tuning) \/ \u0026lt; 1 mA (Standby)\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\"\u003eIngress Rating\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan data-path-to-node=\"10,13,1,0\"\u003eIP54 Dust and Water Resistant\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\"\u003eInterface Ports\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan data-path-to-node=\"10,14,1,0\"\u003eBNC (RF In) \/ SO239 (Antenna Out) \/ 3.5mm (Control Link)\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\"\u003e705\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\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=\"15\"\u003eRecommended Accessories\u003c\/h3\u003e\n\u003cul data-path-to-node=\"16\"\u003e\n\u003cli\u003e\n\u003ca href=\"https:\/\/www.atlanticradiocorp.com\/products\/icom-bp272\" title=\"Icom BP272\"\u003e\u003cb data-path-to-node=\"16,2,0\" data-index-in-node=\"0\"\u003eIcom BP272 Lithium-Ion Battery Pack\u003c\/b\u003e\u003c\/a\u003e – High-capacity 7.4V 2000mAh replacement intelligent power source to sustain active field operations.\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"https:\/\/www.atlanticradiocorp.com\/products\/icom-opc2274\" title=\"Icom OPC2274\"\u003e\u003cb data-path-to-node=\"16,1,0\" data-index-in-node=\"0\"\u003eIcom OPC2474 5-Meter Control Cable\u003c\/b\u003e \u003c\/a\u003e– Extended length 16.4-foot remote connection cable designed to place your antenna tuner far away from your operating position.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3 data-path-to-node=\"17\"\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003ch4 data-path-to-node=\"18\"\u003eAre the AA batteries for this tuner included with the packaging?\u003c\/h4\u003e\n\u003cp\u003eNo, this product listing is for the automatic tuner assembly and installation wiring hardware. The two required AA alkaline cells must be acquired separately.\u003c\/p\u003e\n\u003ch4 data-path-to-node=\"20\"\u003eCan I supply external DC power to this tuner from the IC705 radio?\u003c\/h4\u003e\n\u003cp\u003eNo, external 13.8V DC current must be pulled directly from a dedicated standalone external power supply distribution line, never through the IC705 accessory sockets.\u003c\/p\u003e\n\u003ch4 data-path-to-node=\"22\"\u003eIs this tuning unit compatible with high-power 100-watt hf transceivers?\u003c\/h4\u003e\n\u003cp\u003eNo, this unit is engineered strictly for low-power QRP field operations and has a hard ceiling capacity limit of 10 Watts. High-power inputs will damage internal components.\u003c\/p\u003e\n\u003ch4 data-path-to-node=\"24\"\u003eWhat type of antenna wire is required to tune down to the 1.8 MHz band?\u003c\/h4\u003e\n\u003cp\u003eTo operate reliably down into the 1.8 MHz segment, you must deploy a long-wire antenna element measuring at least 30 meters (98.4 feet) in total length.\u003c\/p\u003e\n\u003ch4 data-path-to-node=\"26\"\u003eHow many distinct tuning channel frequencies can the internal memory retain?\u003c\/h4\u003e\n\u003cp\u003eThe onboard processor contains non-volatile electronic memory blocks calibrated to store up to 45 separate unique matched configurations to reduce repeat tuning times.\u003c\/p\u003e\n\u003ch4 data-path-to-node=\"28\"\u003eDoes this tuner protect the radio if the VSWR is too high?\u003c\/h4\u003e\n\u003cp\u003eYes, it communicates directly via the control cable to verify proper matching lines, allowing the transceiver to monitor final safety limits before full power transmission.\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":48021745303726,"sku":"AH705","price":409.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0062\/0845\/4744\/files\/AH705a.png?v=1782414955","url":"https:\/\/www.atlanticradiocorp.com\/products\/icom-ah705-hf-50mhz-1-8-54mhz-automatic-antenna-tuner","provider":"Atlantic Radio Communications Corp. ","version":"1.0","type":"link"}