The QSDC-800-2700-50-10-S from Qualwave is a Directional Coupler with Frequency 800 to 2700 MHz, Coupling 10±1 dB, Directivity 18 dB, Average Power 50 W, Insertion Loss 1 dB. Tags: Module with Connectors. More details for QSDC-800-2700-50-10-S can be seen below.