The FMCP1020 from Fairview Microwave is a Dual Directional Coupler with Coupling 40 dB, Coupling Variation ± 0.5 dB, Frequency 100 to 500 MHz, Average Power 1 W, Insertion Loss 0.3 dB. Tags: Module with Connectors. More details for FMCP1020 can be seen below.