{"product_id":"four-channel-antenna-combiner-470-865-mhz","title":"Shure Four-Channel Antenna Combiner for PSM Systems 470–865 MHz (PA421B)","description":"\u003cp data-start=\"94\" data-end=\"445\"\u003eThe Shure PA421B Antenna Combiner is a professional-grade RF management solution designed to streamline wireless in-ear monitoring systems. Engineered for use with Shure PSM personal monitor systems, it efficiently combines up to four transmitters into a single antenna, reducing rack clutter while optimizing RF performance.\u003c\/p\u003e\n\u003cp data-start=\"447\" data-end=\"893\"\u003eIdeal for live sound, broadcast, and installed AV environments, the PA421B minimizes intermodulation distortion to maintain a clean and stable RF signal. Its wideband operation across 470–865 MHz ensures compatibility with a wide range of wireless setups. Integrated DC power distribution eliminates the need for separate power supplies, while LED indicators provide real-time monitoring of signal presence, overload conditions, and current draw.\u003c\/p\u003e\n\u003cp data-start=\"895\" data-end=\"1103\"\u003eWith its improved thermal design and quiet operation, the PA421B is built for reliability in demanding environments, making it an essential component for scalable and professional wireless monitoring systems.\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 to 865 MHz\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRF Input Connectors\u003c\/td\u003e\n\u003ctd\u003eBNC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRF Output Connector\u003c\/td\u003e\n\u003ctd\u003eBNC\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 Configuration\u003c\/td\u003e\n\u003ctd\u003eActive\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eExpansion Port\u003c\/td\u003e\n\u003ctd\u003eBNC, passive configuration\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 Operating Range\u003c\/td\u003e\n\u003ctd\u003eUp to 33 dBm (2 W)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDC Output Voltage\u003c\/td\u003e\n\u003ctd\u003e15 V DC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDC Output Current (Per Output)\u003c\/td\u003e\n\u003ctd\u003eUp to 660 mA\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDC Output Power (Per Output)\u003c\/td\u003e\n\u003ctd\u003e9.9 W\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eLED Indicators\u003c\/td\u003e\n\u003ctd\u003eSignal presence, overload, and current draw\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eLED Detection Threshold\u003c\/td\u003e\n\u003ctd\u003e2.5 dBm (RF), 85 mA (DC)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eLED Overload Threshold\u003c\/td\u003e\n\u003ctd\u003eGreater than 24 dBm (RF)\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 to 60 Hz\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePower Consumption\u003c\/td\u003e\n\u003ctd\u003eMaximum 98 W\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCurrent Drain\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 Range\u003c\/td\u003e\n\u003ctd\u003e-18°C to 63°C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSystem Compatibility\u003c\/td\u003e\n\u003ctd\u003eShure PSM Personal Monitor Systems\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eKey Features\u003c\/td\u003e\n\u003ctd\u003eCombines up to four transmitters, reduces intermodulation, rack space optimization, DC power distribution, daisy-chain capability\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e","brand":"Shure","offers":[{"title":"Default Title","offer_id":50808431182057,"sku":"PA421B","price":2112.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1706\/8839\/files\/1502794181_1354607.jpg?v=1776144936","url":"https:\/\/www.avendor.com\/products\/four-channel-antenna-combiner-470-865-mhz","provider":"Avendor","version":"1.0","type":"link"}