The QSDC-1000-18000-30 from Qualwave is a Directional Coupler with Frequency 1000 to 18000 MHz, Coupling 10, 20, 30 dB, Directivity 10 dB, Average Power 30 W, Insertion Loss 1.5 to 1.8 dB. Tags: Module with Connectors. More details for QSDC-1000-18000-30 can be seen below.