The QDDC-30-80-2K-60-NS from Qualwave is a Dual Directional Coupler with Coupling 60 dB, Coupling Variation ±1 dB, Frequency 30 to 80 MHz, Average Power 2000 W, Insertion Loss 0.2 dB. Tags: Module with Connectors. More details for QDDC-30-80-2K-60-NS can be seen below.