Left panel: GMRT 610 MHz radio contours of J 1332–3308 at a resolution of 8.2′′ × 5.0′′, p.a. 0° overlaid on the GMRT 240 MHz colour image (same as right panel). The 1σ level at 610 MHz is ~0.28 mJy b^-1. Contours are spaced by a factor 2 starting from ± 3σ = 0.85 mJy beam^-1. Negative contours are shown in blue. Right panel: GMRT 240 MHz radio contours of J 1332–3308 at a resolution of 18.6′′ × 11.6′′, pa −3.2° overlaid on the DSS–2 image. The 1σ noise level is ~2 mJy b^-1. Contours are spaced by a factor 2 starting from ±3σ = 5.5 mJy b^-1. Negative contours are shown in white. In each panel the restoring beam is reported in the bottom left corner.