Ubiquiti airMAX® 2.4GHz-13dBi OmniDirectional Antenna. The Ubiquiti airMAX® 2.4GHz-13dBi OmniDirectional Antennais a high-performance, 2x2 dual-polarity antenna built in a patented, dual-polarity omni-directional design. This antenna delivers a powerful 360? Coverage and 2x2 dual-polarity MIMO performance both in Line-of-Sight (LOS) or Non-Line-of-Sight (NLOS) applications.