The FMW90CP001-20 from Fairview Microwave is a Waveguide Coupler with Frequency 8.2 to 12.5 GHz, Coupling 20 dB, Directivity 35 dB, Insertion Loss 0.15 dB, Power 300 W. Tags: Broadwall Coupler, Directional Coupler. More details for FMW90CP001-20 can be seen below.