The QSDCC-8200-12500 from Qualwave is a Waveguide Coupler with Frequency 8.2 to 12.5 GHz, Coupling 20 to 60 dB, Directivity 15 to 20 dB, Power 330000 W. Tags: Crossguide Coupler, Directional Coupler. More details for QSDCC-8200-12500 can be seen below.