The QSDC-800-3000-K8-50-NS from Qualwave is a Directional Coupler with Frequency 800 to 3000 MHz, Coupling 50±1.2 dB, Directivity 20 dB, Average Power 800 W, Insertion Loss 0.3 dB. Tags: Module with Connectors. More details for QSDC-800-3000-K8-50-NS can be seen below.