The FMCP1003 from Fairview Microwave is a Dual Directional Coupler with Coupling 50 dB, Coupling Variation ± 0.5 dB, Frequency 20 to 500 MHz, Average Power 1 W, Insertion Loss 0.1 dB. Tags: Module with Connectors. More details for FMCP1003 can be seen below.