The Z30-16-5-75+ from Mini Circuits is a Directional Coupler with Frequency 5 MHz to 1.5 GHz, Coupling 16.12 to 18.42 dB, Directivity 14.32 to 28.99 dB, Power 0.5 to 1 W, Average Power 0.5 to 1 W. Tags: Module with Connectors. More details for Z30-16-5-75+ can be seen below.