The QSDC-300-2400-30 from Qualwave is a Directional Coupler with Frequency 300 to 2400 MHz, Coupling 10 to 30±3.5 dB, Directivity 18 dB, Average Power 30 W, Insertion Loss 0.5 to 1 dB. Tags: Module with Connectors. More details for QSDC-300-2400-30 can be seen below.