The QSDC-11900-18000-2K-40-62 from Qualwave is a Waveguide Coupler with Frequency 11.9 to 18 GHz, Coupling 40 dB, Directivity 20 dB, Insertion Loss 0.3 dB, Power 2000 W. Tags: Directional Coupler. More details for QSDC-11900-18000-2K-40-62 can be seen below.