The QSDC-30-1000-50-20-S from Qualwave is a Directional Coupler with Frequency 30 to 1000 MHz, Coupling 20±1.5 dB, Directivity 20 dB, Average Power 50 W, Insertion Loss 0.65 dB. Tags: Module with Connectors. More details for QSDC-30-1000-50-20-S can be seen below.