Spectrum of the continuum emission from SNR Kes 17 at radio frequencies, constructed with the fluxes in Table 1. Blue data points denote our new measurements from public survey images, and the green points correspond to literature flux estimates. The straight line represents the best fit with a power-law model in the form S_ν ∝ ν^α, which yields a spectral index value α = −0.488 ± 0.023. The shaded darker and lighter pink regions around the straight line denote a variation in the fitted spectral parameters of 1 and 2σ, respectively.