The QSDC-500-2000-30 from Qualwave is a Directional Coupler with Frequency 0.5 to 2 GHz, Coupling 10 to 30 dB, Directivity 20 dB, Average Power 30 W, Insertion Loss 0.8 dB. Tags: Module with Connectors. More details for QSDC-500-2000-30 can be seen below.