Left: WSRT 1360 MHz continuum image of 4C 35.06. Overlaid in red are contours taken from the same image, with levels (− 5,15,150)σ, while plotted in black are 4885 MHz VLA contours of the central region with contour levels of (− 5,50,100,200,350)σ. The WSRT beam is shown in the lower left corner. Middle: the 4C 35.06 radio source as seen by LOFAR at 62 MHz, represented by red contours (33 levels spanning (− 3,183)σ) over an inverted grayscale SDSS image of the central region of the Abell 407 cluster. The peak flux density in this map is 9.1 Jy. Regions in the LOFAR map are labeled A through E. Overlaid in blue are the VLA 4885 MHz image contours. Right: LOFAR 62 MHz (red) and VLA 1415 MHz (blue) contours overlaid over an inverted grayscale SDSS image of the cluster core (UGC 2489). The location of the core hosting the AGN is indicated with a white star. Arrows show the extent and the location of the regions of interest in different images. The relevant beam sizes and noise levels of the images are given in Table 1.