This range of double-ridge waveguide right angle adapters covers 1 to 40 GHz and is suitable for microwave component testing, radar systems, and satellite applications. The adapters have deep matching and high-power handling capability. Partial band adapters are available upon request with better electrical characteristics. Other features include optional pressurized and TVAC units to meet customer requirements. The WRD250S/WRD600 models are SMC special double-ridge waveguide structures that cover extremely wide bandwidths and the WRD600P has high-power handling capability. The SMC-137D180 WRD180 covers 18 to 40 GHz and uses female K connectors. The adapters are made of 6061 aluminum and copper with a chromate-plated brass finish.