The ZCDC10-K1844+ from Mini Circuits is a Directional Coupler with Frequency 18 to 40 GHz, Coupling 10 dB, Coupling Variation ±1.2 dB, Directivity 12.0 to 24 dB, Average Power 17 W. Tags: Module with Connectors. More details for ZCDC10-K1844+ can be seen below.