Clear-Com FSII-TCVR-24 - FreeSpeak II Wireless Intercom Active Antenna2. 4GHz Band Active Transceiver Antenna allows users to freely roam around a facility while staying connected to the base station. Each Active Antenna can create a coverage zone of up to 1,475 feet. One Active Antenna supports up to 4 beltpacks with the ability of adding more if roaming or more beltpack support is required. Up to 10 remote Active Antennas can be strategically placed to cover a wide area. Each active transceiver antenna is IP65 rated