Shure UA874 Active Directional Antenna | Frequency: UA874XA (902-960 MHz)The UA874 Active Directional Antenna from Shure can be stand mounted, suspended from the ceiling, or wall mounted using the included swivel adapter bracket. UA874 uses a log periodic dipole array to produce a cardioid pattern towards the desired coverage area with greater rejection of RF signals outside the coverage area when compared to standard 1 2 wave omnidirectional antennas. An integrated amplifier with four gain settings compensate for varying