Ubiquiti 5Ghz Prism Base Station - No Antenna The Ubiquiti PrismStation 5AC PS-5AC directs RF energy in a tighter beamwidth using an interchangeable isolation antenna horn, available in both symmetrical and asymmetrical designs. With the focus in one direction, the PrismStation 5AC blocks or spatially filters out noise, so noise immunity is improved. This feature is especially important in an area crowded with other RF signals of the same or similar frequency. Symmetrical horn antennas (30° and 45° versions) offer breakthrough scalability options for wireless systems. Unique beam performance and great co-location characteristics allow for a higher density of sectors than traditional sector technology. Asymmetrical horn antennas (60° and 90° versions) have naturally attenuated side lobes and extremely low back radiation. They offer best front-to-back ratio in the industry and the lowest side lobe radiation. Symmetrical Horn Antennas are ideal for cluster sector installations with high co-location requirements