(a) Radio properties visible on LOFAR 144 MHz contour radio image of SBS 1343+537 overlaid on the greyscale Faint Images of the Radio Sky at Twenty-cm (FIRST) data. Contours greyscale starts from the 3σ level (0.24, 0.75, 0.66, 0.30, 0.60, 0.85) mJy beam⁻¹. Negative 3σ contours are marked with a dashed line. LOFAR Two-meter Sky Survey (LoTSS) beam of 6 × 6 arcsec is shown in the corner. The red cross shows the reference radio/optical position of SBS 1343+537 (Pajdosz-Śmierciak et al. 2022). (b) Image at 1.359 GHz with visible extended emission by Apertif DR1 at Westerbork Synthesis Radio Telescope (WSRT; Kutkin et al. 2022). Contours start from the 3σ level, with the first positive contour at 0.15 mJy beam⁻¹, and are scaled by a factor of $\sqrt{2}$. Negative 3σ. contours are shown with dashed lines. The synthesised beam of 17.49  ×  12.31 arcsec is shown in the corner.