The ZUDC30-06183-S+ from Mini Circuits is a Directional Coupler with Frequency 6 to 18 GHz, Coupling 27.5 to 32.5 dB, Directivity 10 to 21.8 dB, Average Power 50 W, Insertion Loss 0.3 to 0.7 dB. Tags: Module with Connectors. More details for ZUDC30-06183-S+ can be seen below.