The QSDC-12400-18000-50 from Qualwave is a Directional Coupler with Frequency 12400 to 18000 MHz, Coupling 10±1 to 20±1 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.