The QDDC-4000-6000-K1-10-NS from Qualwave is a Dual Directional Coupler with Coupling 10 dB, Coupling Variation ±0.5 dB, Frequency 4000 to 6000 MHz, Peak Power 1000 W, Average Power 100 W. Tags: Module with Connectors. More details for QDDC-4000-6000-K1-10-NS can be seen below.