The QDDC-6000-12000-80-35-S from Qualwave is a Dual Directional Coupler with Coupling 35 dB, Coupling Variation ±1 dB, Frequency 6000 to 12000 MHz, Average Power 80 W, Insertion Loss 0.5 dB. Tags: Module with Connectors. More details for QDDC-6000-12000-80-35-S can be seen below.