The QSDC-500-8000-50 from Qualwave is a Directional Coupler with Frequency 500 to 8000 MHz, Coupling 10±1 to 20±1 dB, Directivity 12 to 15 dB, Average Power 50 W, Insertion Loss 1.2 dB. Tags: Module with Connectors. More details for QSDC-500-8000-50 can be seen below.