The QSDC-300-6000-K6 from Qualwave is a Directional Coupler with Frequency 300 to 6000 MHz, Coupling 30±0.9 to 40±1.0 dB, Directivity 15 dB, Average Power 600 W, Insertion Loss 0.7 dB. Tags: Module with Connectors. More details for QSDC-300-6000-K6 can be seen below.