{"product_id":"four-channel-antenna-combiner-865-960-mhz","title":"Shure PA421BX Four-Channel Antenna Combiner","description":"\u003cp data-start=\"75\" data-end=\"452\"\u003eThe Shure PA421BX is a professional-grade four-channel antenna combiner engineered to streamline RF management in complex in-ear monitoring setups. Designed for high-performance wireless environments, it allows up to four compatible PSM transmitters to share a single antenna, significantly reducing rack clutter while improving overall RF efficiency.\u003c\/p\u003e\n\u003cp data-start=\"454\" data-end=\"941\"\u003eOperating in the 865–960 MHz frequency range, the PA421BX delivers stable, wideband performance ideal for touring, broadcast, and installed AV systems. Its advanced design minimizes intermodulation artifacts, ensuring a cleaner RF environment and more reliable signal transmission. Integrated DC power outputs simplify system cabling by powering connected transmitters directly, while LED indicators provide real-time monitoring of signal presence, overload conditions, and current draw.\u003c\/p\u003e\n\u003cp data-start=\"943\" data-end=\"1170\"\u003eWith expansion capabilities for larger systems and an improved thermal design for quiet operation, the PA421BX is a dependable solution for professional audio engineers seeking scalable and efficient wireless system management.\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\u003eFrequency Range\u003c\/td\u003e\n\u003ctd\u003e865–960 MHz\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRF Channels\u003c\/td\u003e\n\u003ctd\u003eCombines up to four transmitters\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eImpedance\u003c\/td\u003e\n\u003ctd\u003e50 Ω\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRF Input Connector\u003c\/td\u003e\n\u003ctd\u003eBNC (Active)\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\u003eRF Gain\u003c\/td\u003e\n\u003ctd\u003e0 dB (±2 dB)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eExpansion Port\u003c\/td\u003e\n\u003ctd\u003eBNC (Passive), supports daisy-chaining\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eExpansion Port Insertion Loss\u003c\/td\u003e\n\u003ctd\u003e\u0026lt;4 dB\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRF Expansion Port Range\u003c\/td\u003e\n\u003ctd\u003e33 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, current draw\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDetection Threshold\u003c\/td\u003e\n\u003ctd\u003e2.5 dBm (signal), 85 mA (current)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOverload Threshold\u003c\/td\u003e\n\u003ctd\u003e\u0026gt;24 dBm (RF), \u0026gt;660 mA (current)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePower Requirements\u003c\/td\u003e\n\u003ctd\u003e100–240 V AC, 50–60 Hz\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePower Consumption\u003c\/td\u003e\n\u003ctd\u003e98 W maximum\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\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\u003eIncluded Accessories\u003c\/td\u003e\n\u003ctd\u003eIEC power cord, DC power cables, BNC coaxial cables\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCompatibility\u003c\/td\u003e\n\u003ctd\u003eShure PSM Personal Monitor Systems\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e","brand":"Shure","offers":[{"title":"Default Title","offer_id":50808434458857,"sku":"PA421BX","price":2112.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1706\/8839\/files\/1502794181_1354608.jpg?v=1776144565","url":"https:\/\/www.avendor.com\/products\/four-channel-antenna-combiner-865-960-mhz","provider":"Avendor","version":"1.0","type":"link"}