Selected total intensity contour maps of the J1528+0544 outer (top four panels) and inner (bottom four panels) doubles over the entire available frequency range. The contour levels are −3, 3, 6, 9, 15, 24, 39, 63, 102, 165, 267, 432, 699, and 1131 × σ_rms. The negative contours are marked with dashed lines. The basic properties of individual maps together with noise levels, σ_rms, are given in Table 1. The center frequencies are shown in the top corners of each panel. The sizes of the circular beams are 45″ for the outer double maps. For the inner double maps, the beam sizes are given in Table 1. The beam sizes are also presented in the bottom left corners of each panel. The regions with a low signal-to-noise ratio at the edges of the primary beams in in high-frequency maps were masked. In the top right corner of the low-resolution 6610 MHz panel, a high-resolution image of the inner structure at the same frequency is included for reference.