The QSDC-400-2500-10 from Qualwave is a Directional Coupler with Frequency 400 to 2500 MHz, Coupling 10±3.5 to 30±1 dB, Directivity 18 dB, Average Power 10 W, Insertion Loss 0.5 to 1 dB. Tags: Module with Connectors. More details for QSDC-400-2500-10 can be seen below.