The ZUDC10-83-S+ from Mini Circuits is a Directional Coupler with Frequency 0.3 to 8 GHZ, Coupling 10 dB, Coupling Variation ±1.0 dB, Directivity 18 to 24 dB, Average Power 20 W. Tags: Module with Connectors. More details for ZUDC10-83-S+ can be seen below.