The QSDC-2000-18000-K25-40-NS from Qualwave is a Directional Coupler with Frequency 2000 to 18000 MHz, Coupling 40±1 dB, Directivity 10 dB, Average Power 250 W, Insertion Loss 0.6 dB. Tags: Module with Connectors. More details for QSDC-2000-18000-K25-40-NS can be seen below.