Can I combine four UA864 antennas from two rooms to a ULXD receiver?
Sometimes, in a wireless mic installation it is necessary to combine antennas from multiple rooms, such as shown at: Antenna Distribution - 2 rooms, 4 antennas
There was an issue (now resolved) when connecting four UA864 (or UA870) antennas directly to either a ULXD4, ULXD4D, or ULXD4Q. The ULXD receiver would show an error message. This issue was resolved in firmware v1.6.11. Firmware can be updated using the Shure Update Utility.