This antenna is designed to help maintain tracking of GPS, Beacon and differential correction signals in challenging environments. Sometimes keeping the antenna level and away from electrical noise is just not possible. With improved multi-path mitigation and ability to filter out an additional 30 decibels of radio band frequencies, GPS L1/Lband/ Beacon antenna offers superior noise rejection. The Antenna GPS L1/L-band/Beacon is designed for use with ArWest L-Band/Beacon receivers.