The QSDC-1000-40000-30 from Qualwave is a Directional Coupler with Frequency 1000 to 40000 MHz, Coupling 10±1.2 to 20±1.5 dB, Directivity 10 dB, Average Power 30 W, Insertion Loss 2.6 to 2.8 dB. Tags: Module with Connectors. More details for QSDC-1000-40000-30 can be seen below.