The QDDC-1000-6000-50 from Qualwave is a Dual Directional Coupler with Coupling 10 to 40 dB, Coupling Variation ±1 to ±1.2 dB, Frequency 1000 to 6000 MHz, Average Power 50 W, Insertion Loss 0.5 to 2 dB. Tags: Module with Connectors. More details for QDDC-1000-6000-50 can be seen below.