Shure UA874US Active Directional Antenna

120 degree pickup pattern Mounts to microphone stands or boom pole Compatible with Shure wireless receivers and antenna distribution systems that provide 12v DC bias Four-position gain selector switch Low-noise signal amplifier that compensates for transmission loss in coaxial cable Two antennas are required for a true diversity wireless system Add the optional microphone boom pole and mounting clamp (pictured, but sold separately) to elevate your antenna from 3.1 to 8.1 high above the mounting point