The ZADC-20-50DC+ from Mini Circuits is a Directional Coupler with Frequency 800 MHz to 1.6 GHz, Coupling 19.91 to 21.32 dB, Directivity 13.68 to 25.44 dB, Power 5 W, Average Power 5 W. Tags: Module with Connectors. More details for ZADC-20-50DC+ can be seen below.