The QSDC-10-500-K1-50-NS from Qualwave is a Directional Coupler with Frequency 10 to 500 MHz, Coupling 50±1.5 dB, Directivity 18 dB, Average Power 100 W, Insertion Loss 0.2 dB. Tags: Module with Connectors. More details for QSDC-10-500-K1-50-NS can be seen below.