AR offers a standard product line of low-loss microwave waveguides. The WF1800 and WR1800 series are recommended for the output of our Model 200T8G18A, Model 500T8G18, and Model 1000T8G18B broadband microwave power amplifiers. The Model WF is a flexible and twistable waveguide. The Model WR is a rigid waveguide. The Model WT (90°) is a Rigid Twist Waveguide. The Model WS is a seamless waveguide. The Model WB is E or H bend 90°. All microwave waveguides on this specification are export-classified as EAR99.