{"product_id":"listen-technologies-la-81-4-way-rf-antenna-combiner","title":"Listen Technologies LA-81 – 4-Way RF Antenna Combiner","description":"\u003ch2\u003eProduct Overview\u003c\/h2\u003e\u003cp\u003eThe Listen Technologies LA-81 is a 4-way RF antenna combiner, allowing up to four RF assistive listening transmitters to share a single antenna. Any venue running simultaneous interpretation or audio description needs one transmitter per channel, and running an antenna for each is neither practical nor electrically sound.\u003c\/p\u003e\u003ch2\u003eProduct Description\u003c\/h2\u003e\u003cp\u003eMulti-channel RF assistive listening requires one transmitter per channel. A venue offering the floor language plus two interpretation feeds needs three transmitters.\u003c\/p\u003e\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0603\/7982\/4364\/files\/main_la_81_lg.jpg?v=1787627361\" alt=\"Listen Technologies LA-81 4-way rf antenna combiner\" style=\"max-width:100%;height:auto;\"\u003e\u003c\/p\u003e\u003cp\u003eRunning a separate antenna per transmitter is the obvious approach and the wrong one: adjacent antennas interfere with each other and coverage becomes unpredictable, while cable runs and mounting points multiply for no benefit.\u003c\/p\u003e\u003cp\u003eThe LA-81 combines up to four transmitter outputs onto one antenna feed. Where more channels are required, the \u003ca href=\"https:\/\/creationnetworks.net\/products\/listen-technologies-la-82-6-way-rf-antenna-combiner\"\u003e6-way combiner\u003c\/a\u003e covers up to six. Antenna cable is ordered separately: \u003ca href=\"https:\/\/creationnetworks.net\/products\/listen-technologies-la-112-500-rg-58-50-ohm-coaxial-cable-500-ft\"\u003eRG-58\u003c\/a\u003e for shorter runs, \u003ca href=\"https:\/\/creationnetworks.net\/products\/listen-technologies-la-113-500-rg-8-50-ohm-low-loss-coaxial-cable-500-ft\"\u003elow-loss RG-8\u003c\/a\u003e where the antenna is remote.\u003c\/p\u003e\u003ch2\u003eKey Features\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eFour transmitter inputs\u003c\/strong\u003e — Combines up to four RF transmitter outputs onto a single antenna feed.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSingle antenna coverage\u003c\/strong\u003e — Keeps coverage defined by one antenna position rather than several interfering ones.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMulti-channel support\u003c\/strong\u003e — Suits venues running simultaneous interpretation or audio description channels.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBNC connector family\u003c\/strong\u003e — Matches the connector standard across the Listen stationary RF range.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eTechnical Specifications\u003c\/h2\u003e\u003cdiv style=\"overflow-x:auto;-webkit-overflow-scrolling:touch;\"\u003e\u003ctable style=\"width:100%;border-collapse:collapse;min-width:400px;\"\u003e\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\" style=\"text-align:left;padding:8px;border-bottom:1px solid #ddd;\"\u003eManufacturer\u003c\/th\u003e\n\u003ctd style=\"padding:8px;border-bottom:1px solid #ddd;\"\u003eListen Technologies\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\" style=\"text-align:left;padding:8px;border-bottom:1px solid #ddd;\"\u003ePart Number\u003c\/th\u003e\n\u003ctd style=\"padding:8px;border-bottom:1px solid #ddd;\"\u003eLA-81\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\" style=\"text-align:left;padding:8px;border-bottom:1px solid #ddd;\"\u003eType\u003c\/th\u003e\n\u003ctd style=\"padding:8px;border-bottom:1px solid #ddd;\"\u003eRF antenna combiner\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\" style=\"text-align:left;padding:8px;border-bottom:1px solid #ddd;\"\u003eInputs\u003c\/th\u003e\n\u003ctd style=\"padding:8px;border-bottom:1px solid #ddd;\"\u003e4\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\" style=\"text-align:left;padding:8px;border-bottom:1px solid #ddd;\"\u003eImpedance\u003c\/th\u003e\n\u003ctd style=\"padding:8px;border-bottom:1px solid #ddd;\"\u003e50 ohm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\" style=\"text-align:left;padding:8px;border-bottom:1px solid #ddd;\"\u003eApplication\u003c\/th\u003e\n\u003ctd style=\"padding:8px;border-bottom:1px solid #ddd;\"\u003eMulti-transmitter RF assistive listening installations\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\u003c\/table\u003e\u003c\/div\u003e\u003cp\u003e\u003cem\u003eSpecifications sourced from the Listen Technologies product listing.\u003c\/em\u003e\u003c\/p\u003e","brand":"Listen Technologies","offers":[{"title":"Default Title","offer_id":48228834017516,"sku":"LA-81","price":271.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0603\/7982\/4364\/files\/main_la_81_lg.jpg?v=1787627361","url":"https:\/\/creationnetworks.net\/products\/listen-technologies-la-81-4-way-rf-antenna-combiner","provider":"Creation Networks","version":"1.0","type":"link"}