The QSDC-800-6000-K4-20-NS from Qualwave is a Directional Coupler with Frequency 800 to 6000 MHz, Coupling 20±1 dB, Directivity 14 dB, Average Power 400 W, Insertion Loss 0.5 dB. Tags: Module with Connectors. More details for QSDC-800-6000-K4-20-NS can be seen below.