The PE9881-20 WR-15 waveguide horn antenna from Pasternack operates from 50 to 75 GHz. This WR-15 waveguide horn antenna has a 20 dBi nominal gain and a UG-385/U flange. It has a vertical beam width of 20 degrees at 3 dB. This antenna measures 1.81×1.07×1.07 inches in size and weighs 0.188 lbs.