The QSDC-10900-13500-12-30-S from Qualwave is a Directional Coupler with Frequency 10900 to 13500 MHz, Coupling 30±1.2 dB, Directivity 17 dB, Average Power 12 W, Insertion Loss 0.6 dB. Tags: Module with Connectors. More details for QSDC-10900-13500-12-30-S can be seen below.