The QSDC-400-1560-30-10-S from Qualwave is a Directional Coupler with Frequency 400 to 1560 MHz, Coupling 10±1 to 10±1.5 dB, Directivity 20 dB, Average Power 30 W, Insertion Loss 1.1 dB. Tags: Module with Connectors. More details for QSDC-400-1560-30-10-S can be seen below.