{"product_id":"4-ch-antenna-combiner-470-865-mhz-taa","title":"Shure PA421B Four-Channel Antenna Combiner 470–865 MHz TAA (PA421B-TA)","description":"\u003cp data-start=\"97\" data-end=\"519\"\u003eThe Shure PA421B Four-Channel Antenna Combiner is a high-performance RF management solution designed to streamline and optimize multi-channel in-ear monitoring systems. Built for professional audio environments, it efficiently combines up to four wireless transmitters into a single antenna system, reducing rack clutter while improving signal integrity and minimizing intermodulation distortion.\u003c\/p\u003e\n\u003cp data-start=\"521\" data-end=\"928\"\u003eEngineered for reliability and clean RF performance, the PA421B operates across a wide 470–865 MHz frequency range, making it ideal for demanding live sound, broadcast, and installed AV applications. Integrated DC power outputs simplify system deployment by powering compatible transmitters directly, while LED indicators provide real-time monitoring of signal status, overload conditions, and current draw.\u003c\/p\u003e\n\u003cp data-start=\"930\" data-end=\"1138\"\u003eWith support for daisy-chaining multiple units and a rugged rackmount design, the PA421B ensures scalable, organized, and interference-free wireless operation for professional audio engineers and integrators.\u003c\/p\u003e\n\u003ctable\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003eSpecification\u003c\/th\u003e\n\u003cth\u003eDetails\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eProduct Type\u003c\/td\u003e\n\u003ctd\u003eFour-Channel Antenna Combiner\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFrequency Range\u003c\/td\u003e\n\u003ctd\u003e470–865 MHz\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRF Inputs\u003c\/td\u003e\n\u003ctd\u003e4 x BNC (Active)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRF Output\u003c\/td\u003e\n\u003ctd\u003e1 x BNC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eExpansion Port\u003c\/td\u003e\n\u003ctd\u003e1 x BNC (Passive, Daisy-Chain Capable)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eImpedance\u003c\/td\u003e\n\u003ctd\u003e50 Ohms\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRF Gain\u003c\/td\u003e\n\u003ctd\u003e0 dB (±2 dB)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRF Input Detection Threshold\u003c\/td\u003e\n\u003ctd\u003e2.5 dBm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRF Overload Threshold\u003c\/td\u003e\n\u003ctd\u003eGreater than 24 dBm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eExpansion Port Insertion Loss\u003c\/td\u003e\n\u003ctd\u003eLess than 4 dB\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRF Expansion Port Max Input\u003c\/td\u003e\n\u003ctd\u003e33 dBm (2 W)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDC Outputs\u003c\/td\u003e\n\u003ctd\u003e4 x 15 V DC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOutput Current per Port\u003c\/td\u003e\n\u003ctd\u003eUp to 660 mA\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOutput Power per Port\u003c\/td\u003e\n\u003ctd\u003e9.9 W\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePower Requirements\u003c\/td\u003e\n\u003ctd\u003e100 to 240 V AC, 50–60 Hz\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePower Consumption\u003c\/td\u003e\n\u003ctd\u003eUp to 98 W\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCurrent Draw\u003c\/td\u003e\n\u003ctd\u003e1.09 A at 100 V AC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOperating Temperature\u003c\/td\u003e\n\u003ctd\u003e-18°C to 63°C (0°F to 145°F)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eLED Indicators\u003c\/td\u003e\n\u003ctd\u003eSignal Presence, Overload, Current Draw\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRack Compatibility\u003c\/td\u003e\n\u003ctd\u003eStandard 19-inch Rackmount\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eIncluded Accessories\u003c\/td\u003e\n\u003ctd\u003eIEC Power Cord, DC Power Cables, Coaxial Cables\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eApplication\u003c\/td\u003e\n\u003ctd\u003eWireless IEM RF Management\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCompliance\u003c\/td\u003e\n\u003ctd\u003eTAA Compliant\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e","brand":"Shure","offers":[{"title":"Default Title","offer_id":50808318296297,"sku":"PA421B-TA","price":2312.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1706\/8839\/files\/1ff0865faed84046eef4e3825f5316b0.avif?v=1776253379","url":"https:\/\/www.avendor.com\/products\/4-ch-antenna-combiner-470-865-mhz-taa","provider":"Avendor","version":"1.0","type":"link"}