The QDDC-6000-10000-K12-40-NS from Qualwave is a Dual Directional Coupler with Coupling 40 dB, Coupling Variation ±1 dB, Frequency 6000 to 10000 MHz, Average Power 120 W, Insertion Loss 0.3 dB. Tags: Module with Connectors. More details for QDDC-6000-10000-K12-40-NS can be seen below.