The QSDC-500-6000-30 from Qualwave is a Directional Coupler with Frequency 500 to 6000 MHz, Coupling 20±1 to 30±1.5 dB, Directivity 18 dB, Average Power 30 W, Insertion Loss 0.6 to 1 dB. Tags: Module with Connectors. More details for QSDC-500-6000-30 can be seen below.