Maury Microwave’s AT-series of fixed coaxial 1.85mm Microwave Attenuators are used to reduce the power of a RF, MW or mmW signal without distorting its signal quality/waveform. Following the proposed IEEE high-frequency connector/adapter color convention, AT-series 1.85mm Microwave Attenuators are the first commercially available products to offer clear indications of compatibility and intermatability. AT-series 1.85mm Microwave Attenuators make it a simple matter to avoid and eliminate damaged equipment, degraded equipment reliability, degraded performance and lengthy maintenance times due to improper mating (and attempted mating) of incompatible adapters.