The QSDC-1-500-K2-40-NS from Qualwave is a Directional Coupler with Frequency 1 to 500 MHz, Coupling 40±0.5 dB, Directivity 18 dB, Average Power 200 W, Insertion Loss 0.6 dB. Tags: Module with Connectors. More details for QSDC-1-500-K2-40-NS can be seen below.