Detection of a faint burst from the repeating FRB 20180916B at 150 MHz before (left) and after (right) using RFIClean. The lower panels show the spectrograms around the burst arrival time, after correcting for the known dispersive delay across the bandwidth. Due to the dispersive delay corrections, the periodic RFI appears as highly slanted stripes in the left image. The upper panels display the vertical averages of data displayed in the lower panels, and correspond to the net average profile of the burst. Improvement in the detection confidence and overall data quality of the burst is clearly visible.