The QSDC-2000-3000-50-20-S from Qualwave is a Directional Coupler with Frequency 2000 to 3000 MHz, Coupling 20±1 dB, Frequency Sensitivity 1 dB, Directivity 20 dB, Average Power 50 W. Tags: Module with Connectors. More details for QSDC-2000-3000-50-20-S can be seen below.