Key Specifications. Product Type Horn Covers Waveguide Size WR-90 Body Material Polymethacrylimide (PMI). 10 dBi WR-90 Standard Gain Horn Radome CoverFMWGCOV090-10 is a radome cover for 10 dBi WR-90 Standard Gain Horn antenna. This waveguide antenna radome cover is made from high strength, thermally stable Polymethacrylimide (PMI). PMI offers a low Relative Permittivity (Dielectric Constant) at the high frequency ranges seen with microwave and millimeter wave components. This allows for minimal signal loss or attenuation over other materials. Increase your system capabilities with our PMI radome covers, designed to enhance the durability and longevity of standard gain horn antennas. Shielding against environmental elements, our radome covers ensure consistent signal integrity in any conditions. FMWGCOV090-10 has internal dimensions of 1.5 in by 1.25 in and will fit 10 dBi WR-90 standard gain horns. Fairview Microwave offers a wide selection of high performance waveguide components available in stock and same-day shipping to customers worldwide.Min Qty:1Package Multiple:1FMWGCOV090-10 Part Details