The QSDC-500-6000-K6 from Qualwave is a Directional Coupler with Frequency 500 to 6000 MHz, Coupling 30±0.7 to 40±0.8 dB, Directivity 15 dB, Average Power 600 W, Insertion Loss 0.6 dB. Tags: Module with Connectors. More details for QSDC-500-6000-K6 can be seen below.