Total power emission from the Toothbrush relic at 70″ resolution. Left: Effelsberg 14.25 GHz image. The largest linear size of the relic is ∼1.8 Mpc, similar to those reported below 10 GHz. Contour levels are drawn at , where σ_{rms, 14.25 GHz} = 0.2 m Jy beam⁻¹ and σ_{rms, 18.6 GHz} = 0.4 m Jy beam⁻¹. Right: SRT 18.6 GHz image overlaid with the SRT (gray) and Effelsberg (white) contours. Cyan boxes define the area used for measuring the integrated spectrum of the relic and its subregions. The emission at the top right corner in the SRT image is due to blending of discrete sources.