The QSDC-2000-40000-30 from Qualwave is a Directional Coupler with Frequency 2000 to 40000 MHz, Coupling 10±1.5 to 30±1.5 dB, Directivity 10 dB, Average Power 30 W, Insertion Loss 1.5 to 2 dB. Tags: Module with Connectors. More details for QSDC-2000-40000-30 can be seen below.