The QSDC-600-2700-K4-40-N from Qualwave is a Directional Coupler with Frequency 600 to 2700 MHz, Coupling 40±1.5 dB, Directivity 20 dB, Average Power 400 W, Insertion Loss 0.3 dB. Tags: Module with Connectors. More details for QSDC-600-2700-K4-40-N can be seen below.