The QSDC-1000-40000-20 from Qualwave is a Directional Coupler with Frequency 1000 to 40000 MHz, Coupling 6±0.8 to 30±1.2 dB, Directivity 9 to 10 dB, Average Power 20 W, Insertion Loss 1.9 to 3.8 dB. Tags: Module with Connectors. More details for QSDC-1000-40000-20 can be seen below.