The QSDC-100-110-10-10-S from Qualwave is a Directional Coupler with Frequency 100 to 110 MHz, Coupling 10±1 dB, Directivity 20 dB, Average Power 10 W, Insertion Loss 1 dB. Tags: Module with Connectors. More details for QSDC-100-110-10-10-S can be seen below.