Impact of RFI sources on the u v plane and power spectra of different target fields. The visibility amplitude in the gridded u v plane for observed and simulated data for NCP and NT05 phase centers are shown in the top and middle rows. The bottom row shows the power spectra estimated from observed NT05 data, without (left) and with (right) the u v cells around the u = 0 line flagged. The white dashed lines indicate the horizon limit.