The ZFDC-10-1-75 from Mini Circuits is a Directional Coupler with Frequency 1 to 400 MHz, Coupling 10.46 to 10.97 dB, Directivity 22.28 to 59.93 dB, Power 2 to 4 W, Average Power 2 to 4 W. Tags: Module with Connectors. More details for ZFDC-10-1-75 can be seen below.