The QSDC-600-6000-50 from Qualwave is a Directional Coupler with Frequency 600 to 6000 MHz, Coupling 10±1.2 to 30±1.2 dB, Directivity 15 to 18 dB, Average Power 50 W, Insertion Loss 0.5 to 1 dB. Tags: Module with Connectors. More details for QSDC-600-6000-50 can be seen below.