The QSDC-450-2500-50-6-S from Qualwave is a Directional Coupler with Frequency 450 to 2500 MHz, Coupling 6±1 dB, Directivity 18 dB, Average Power 50 W, Insertion Loss 0.8 dB. Tags: Module with Connectors. More details for QSDC-450-2500-50-6-S can be seen below.