The QSDC-500-2500-K5-40-NS from Qualwave is a Directional Coupler with Frequency 500 to 2500 MHz, Coupling 40±0.7 dB, Directivity 18 dB, Average Power 500 W, Insertion Loss 0.3 dB. Tags: Module with Connectors. More details for QSDC-500-2500-K5-40-NS can be seen below.