The QDDC-800-2800-1K5 from Qualwave is a Dual Directional Coupler with Coupling 50 dB, Coupling Variation ±1 to ±1.5 dB, Frequency 800 to 2800 MHz, Average Power 1500 W, Insertion Loss 0.2 to 0.25 dB. Tags: Module with Connectors. More details for QDDC-800-2800-1K5 can be seen below.