The QDDC-80-3000-K15-50-N from Qualwave is a Dual Directional Coupler with Coupling 50 dB, Coupling Variation ±1 dB, Frequency 80 to 3000 MHz, Average Power 150 W, Insertion Loss 0.8 dB. Tags: Module with Connectors. More details for QDDC-80-3000-K15-50-N can be seen below.