KV-RA are Thin, Flexible, Weatherproof, Resonating Rubber based Microwave Absorbers.Consists of Magnetically/Electrically loaded Neoprene and Silicone (KV-RA-SI) rubbers.Design frequency range is of 1 to 18 GHz.Unlike typical iron-filled rubber absorbers, no oxidation is possible due to the chemical nature of the filler component.