The QSDC-500-18000-30-6-S from Qualwave is a Directional Coupler with Frequency 500 to 18000 MHz, Coupling 6±0.8 dB, Directivity 14 dB, Average Power 30 W, Insertion Loss 2.6 dB. Tags: Module with Connectors. More details for QSDC-500-18000-30-6-S can be seen below.