The QDDC-80-1000-1K-50-NS from Qualwave is a Dual Directional Coupler with Coupling 50 dB, Coupling Variation ±1 dB, Frequency 80 to 1000 MHz, Average Power 1000 W, Insertion Loss 0.3 dB. Tags: Module with Connectors. More details for QDDC-80-1000-1K-50-NS can be seen below.