The QSDC-20000-50000-10 from Qualwave is a Directional Coupler with Frequency 20000 to 50000 MHz, Coupling 10±1.2 to 30±1.2 dB, Directivity 8 to 10 dB, Average Power 10 W, Insertion Loss 1.2 to 1.8 dB. Tags: Module with Connectors. More details for QSDC-20000-50000-10 can be seen below.