The FMCP1018 from Fairview Microwave is a Dual Directional Coupler with Coupling 20 dB, Coupling Variation ± 0.7 dB, Frequency 2 to 6 GHz, Average Power 100 W, Insertion Loss 0.35 dB. Tags: Module with Connectors. More details for FMCP1018 can be seen below.