The QSDC-600-3000-K5-40-NS from Qualwave is a Directional Coupler with Frequency 600 to 3000 MHz, Coupling 40±1 dB, Directivity 16 dB, Average Power 500 W, Insertion Loss 0.35 dB. Tags: Module with Connectors. More details for QSDC-600-3000-K5-40-NS can be seen below.