The QSDC-375-6000-30-30-S from Qualwave is a Directional Coupler with Frequency 375 to 6000 MHz, Coupling 30±1.6 dB, Directivity 18 dB, Average Power 30 W, Insertion Loss 0.5 dB. Tags: Module with Connectors. More details for QSDC-375-6000-30-30-S can be seen below.