The ZFDC-15-5 from Mini Circuits is a Directional Coupler with Frequency 1 MHz to 2 GHz, Coupling 14.87 to 16.06 dB, Directivity 19.42 to 39.47 dB, Power 0.5 to 2 W, Average Power 0.5 to 2 W. Tags: Module with Connectors. More details for ZFDC-15-5 can be seen below.