The QSDC-1000-50000-20 from Qualwave is a Directional Coupler with Frequency 1000 to 50000 MHz, Coupling 10±1 to 20±1 dB, Directivity 8 to 9 dB, Average Power 20 W, Insertion Loss 3 to 3.5 dB. Tags: Module with Connectors. More details for QSDC-1000-50000-20 can be seen below.