The QSDC-20-1000-K15-50-S from Qualwave is a Directional Coupler with Frequency 20 to 1000 MHz, Coupling 50±1 dB, Directivity 20 dB, Average Power 150 W, Insertion Loss 0.4 dB. Tags: Module with Connectors. More details for QSDC-20-1000-K15-50-S can be seen below.