The HP2-18 from Radio Waves is a Base Station Antenna with Frequency 17.7 to 19.7 GHz, Frequency Band 1 17.7 to 19.7 GHz, Gain 38.2 to 39 dBi, Vertical Beamwidth 2 Degree, Horizontal Beamwidth 2 Degree. Tags: Parabolic. More details for HP2-18 can be seen below.