The ZHDC-16-63-NS+ from Mini Circuits is a Directional Coupler with Frequency 50 MHz to 6 GHz, Coupling 16 to 18 dB, Directivity 24 to 32 dB, Power 0.5 W, Average Power 0.5 W. Tags: Module with Connectors. More details for ZHDC-16-63-NS+ can be seen below.