Full-resolution images of the central region of A3528N (top row), A3528S (centre row), and A3532 (bottom row). From left to right: uGMRT Band 3 (410 MHz), uGMRT Band 4 (650/700 MHz), and MeerKAT (1284 MHz). Radio contours are displayed at 3σ_rms, ν × [ − 1, 1, 2, 4, 8, 16, 32] levels (when present, negative contours are shown as dashed lines), where σ_rms, ν is the map noise at the different frequencies (see Table 3). The radio sources and features are labelled in the right panel. The beams are displayed in the bottom left corner of each panel (see Table 3). The white cross (×) shows the location of the X-ray peak.