The QSDC-300-10000-50 from Qualwave is a Directional Coupler with Frequency 300 to 10000 MHz, Coupling 10±2 to 30±2 dB, Directivity 8 to 10 dB, Average Power 50 W, Insertion Loss 2 to 2.5 dB. Tags: Module with Connectors. More details for QSDC-300-10000-50 can be seen below.