Passive directional antenna for use with Evolution Wireless Digital systems. The ADP UHF passive directional antenna is the perfect addition for enhancing the wireless performance of your Evolution Wireless Digital system. The 5/8" and 3/8" threads make it easy to mount on any mic stand. The ADP UHF can be connected to the EW-D EM receiver, the EW-D AB antenna booster or EW-D ASA antenna splitter.