The QSDLC-8200-12500 from Qualwave is a Waveguide Coupler with Frequency 8.2 to 12.5 GHz, Coupling 10 to 30 dB, Directivity 25 dB, Insertion Loss 0.25 dB, Power 330000 W. Tags: Directional Coupler, Loop Coupler. More details for QSDLC-8200-12500 can be seen below.