The QDDC-2000-5000-K4-45-NS from Qualwave is a Dual Directional Coupler with Coupling 45 dB, Coupling Variation ±1.5 dB, Frequency 2000 to 5000 MHz, Peak Power 3000 W, Average Power 400 W. Tags: Module with Connectors. More details for QDDC-2000-5000-K4-45-NS can be seen below.