The QDDC-5000-6000-K1-50-NS from Qualwave is a Dual Directional Coupler with Coupling 50 dB, Coupling Variation ±0.5 dB, Frequency 5000 to 6000 MHz, Average Power 100 W, Insertion Loss 0.5 dB. Tags: Module with Connectors. More details for QDDC-5000-6000-K1-50-NS can be seen below.