Sennheiser AWM 2 MK II SpeechLine Wall-Mount Antenna

SpeechLine Digital Wireless runs at 1.9 GHz, and 1.9 GHz does not go through walls the way UHF does. The AWM 2 MK II moves the antennas out of the rack and into the room they have to cover, on two R-SMA connections and a 225 mm bar that mounts to a wall through two 9 mm holes or onto a 3/8 inch stand thread.

It is passive and tuned to the 1,880 to 1,930 MHz band, so it does exactly one job and does not need power or configuration. For a room needing four antenna paths, the AWM 4 is the same idea with twice the elements.