The QSDC-10-500-50-30-NS from Qualwave is a Directional Coupler with Frequency 10 to 500 MHz, Coupling 30±1 dB, Directivity 20 dB, Average Power 50 W, Insertion Loss 0.7 dB. Tags: Module with Connectors. More details for QSDC-10-500-50-30-NS can be seen below.