The RFOC-811-QRC-DC-10 from Quantic PMI (Planar Monolithics) is a Directional Coupler with Frequency 8 to 11 GHz, Coupling 10 dB, Frequency Sensitivity ±0.75 dB, Directivity 15 dB, Average Power 5(Reflected) to 50 W(Incident). Tags: Module with Connectors. More details for RFOC-811-QRC-DC-10 can be seen below.