The QSDC-2000-18000-K2-50-NS from Qualwave is a Directional Coupler with Frequency 2000 to 18000 MHz, Coupling 50±2 dB, Directivity 10 dB, Average Power 200 W, Insertion Loss 0.6 dB. Tags: Module with Connectors. More details for QSDC-2000-18000-K2-50-NS can be seen below.