The Shure UA8 1/2 Wave Dipole Antenna (518 to 582 MHz) is compatible with Axient, UHF-R, ULX-D, ULX, SLX, and BLX4R receivers as well as PSM1000 and PSM900 transmitters. It offers 45° positioning related to the horizontal or vertical position, giving you more flexibility to achieve optimal RF reception.