The QSDC-2500-6000-50-6-S from Qualwave is a Directional Coupler with Frequency 2.5 to 6 GHz, Coupling 6±1 dB, Directivity 20 dB, Average Power 50 W, Insertion Loss 0.8 dB. Tags: Module with Connectors. More details for QSDC-2500-6000-50-6-S can be seen below.