The QSDC-400-800-K8-40-NS from Qualwave is a Directional Coupler with Frequency 400 to 800 MHz, Coupling 40±1 dB, Directivity 18 dB, Average Power 800 W, Insertion Loss 0.3 dB. Tags: Module with Connectors. More details for QSDC-400-800-K8-40-NS can be seen below.