The QDDC-2000-8000-K1-30-N from Qualwave is a Dual Directional Coupler with Coupling 30 dB, Coupling Variation ±1 dB, Frequency 2000 to 8000 MHz, Average Power 100 W, Insertion Loss 0.5 dB. Tags: Module with Connectors. More details for QDDC-2000-8000-K1-30-N can be seen below.