The QSDC-12400-18000-50 from Qualwave is a Directional Coupler with Frequency 12.4 to 18 GHz, Coupling 10 to 20 dB, Directivity 12 dB, Average Power 50 W, Insertion Loss 0.8 dB. Tags: Module with Connectors. More details for QSDC-12400-18000-50 can be seen below.