The ZCDC13-01263-S+ from Mini Circuits is a Directional Coupler with Frequency 1 to 26.5 GHz, Coupling 13 dB, Coupling Variation ±1.2 dB, Directivity 13 to 31 dB, Average Power 19 W. Tags: Module with Connectors. More details for ZCDC13-01263-S+ can be seen below.