Radio Waves ProLine parabolic microwave antennas are available in sizes of 1 to 8 feet (0.3 to 2.4 meter) in diameter and frequency ranges from 1.3 to 86 GHz. (Note that not all sizes are available at each frequency band.) Parabolic Antenna construction typically consists of a single piece of spun aluminum employing a dipole, waveguide or proprietary center-fed feed design. The antenna’s mount is fabricated of cast aluminum, incorporating fine azimuth and elevation adjustments for ease of alignment. High Performance antenna designs typically utilize an aluminum shroud and absorber material to suppress side lobes and improve front-to-back performance. Careful selection of mechanical components is required to assure long life and corrosion-free performance.