The QSDC-2000-6000-K25-40-NS from Qualwave is a Directional Coupler with Frequency 2000 to 6000 MHz, Coupling 40±2 dB, Directivity 11.5 dB, Average Power 250 W, Insertion Loss 0.6 dB. Tags: Module with Connectors. More details for QSDC-2000-6000-K25-40-NS can be seen below.