The ZADC-15-252+ from Mini Circuits is a Directional Coupler with Frequency 850 to 2500 MHz, Coupling 14 to 14.5 dB, Coupling Variation ±1.2 to 1.5 dB, Directivity 12.5 to 18 dB, Average Power 8 W. Tags: Module with Connectors. More details for ZADC-15-252+ can be seen below.