The QDDC-80-1000-K8-50-N7 from Qualwave is a Dual Directional Coupler with Coupling 50 dB, Coupling Variation ±1 dB, Frequency 80 to 1000 MHz, Average Power 800 W, Insertion Loss 0.3 dB. Tags: Module with Connectors. More details for QDDC-80-1000-K8-50-N7 can be seen below.