The FMCP1017 from Fairview Microwave is a Dual Directional Coupler with Coupling 40 dB, Coupling Variation ± 0.7 dB, Frequency 800 MHz to 4.2 GHz, Average Power 600 W, Insertion Loss 0.3 dB. Tags: Module with Connectors. More details for FMCP1017 can be seen below.