The QSDBC-840-2000 from Qualwave is a Waveguide Coupler with Frequency 0.84 to 2 GHz, Coupling 60 dB, Directivity 20 dB, Power 2000 W. Tags: Broadwall Coupler, Directional Coupler, Double Ridged Coupler. More details for QSDBC-840-2000 can be seen below.