The QSDC-20000-50000-10 from Qualwave is a Directional Coupler with Frequency 20 to 50 GHz, Coupling 10 to 30 dB, Directivity 8 dB, Average Power 10 W, Insertion Loss 1.8 dB. Tags: Module with Connectors. More details for QSDC-20000-50000-10 can be seen below.