The ZX30-17-5+ from Mini Circuits is a Directional Coupler with Frequency 5 MHz to 2 GHz, Coupling 16.33 to 18.83 dB, Directivity 11.92 to 26.8 dB, Power 0.5 to 1 W, Average Power 0.5 to 1 W. Tags: Module with Connectors. More details for ZX30-17-5+ can be seen below.