The QDDC-2000-8000-80-45-S from Qualwave is a Dual Directional Coupler with Coupling 45 dB, Coupling Variation ±0.6 dB, Frequency 2000 to 8000 MHz, Average Power 80 W, Insertion Loss 0.3 dB. Tags: Module with Connectors. More details for QDDC-2000-8000-80-45-S can be seen below.