The QSDC-8000-18000-10-10-N from Qualwave is a Directional Coupler with Frequency 8000 to 18000 MHz, Coupling 10±1.2 dB, Directivity 12 dB, Average Power 10 W, Insertion Loss 1 dB. Tags: Module with Connectors. More details for QSDC-8000-18000-10-10-N can be seen below.