Sector 3 GHz antennas from KP Performance Antennas are designed to operate in the unlicensed and licensed 3300 MHz – 3800 MHz spectrum. KP’s family of sector 3 GHz antennas are shipped from stock the same-day they are ordered. 3 GHz sector antenna series from KP comes with a 100% performance guarantee and are backed by expert technical support from a team of former WISP operators and Ph.D. antenna engineers.