The QSDC-500-12000-80-20-S from Qualwave is a Directional Coupler with Frequency 500 to 12000 MHz, Coupling 20±1 dB, Directivity 12 dB, Average Power 80 W, Insertion Loss 1 dB. Tags: Module with Connectors. More details for QSDC-500-12000-80-20-S can be seen below.