The QSDC-6000-18000-30-6-S from Qualwave is a Directional Coupler with Frequency 6000 to 18000 MHz, Coupling 6±0.5 dB, Directivity 15 dB, Average Power 30 W, Insertion Loss 2 dB. Tags: Module with Connectors. More details for QSDC-6000-18000-30-6-S can be seen below.