The QSDLC-5000-18000 from Qualwave is a Waveguide Coupler with Frequency 5 to 18 GHz, Coupling 40 dB, Directivity 12 dB, Power 2000 W. Tags: Double Ridged Coupler, Loop Coupler, Directional Coupler. More details for QSDLC-5000-18000 can be seen below.