  We investigate the low-frequency spectral emission from a network of
superconducting cosmic string loops in hopes of explaining the observed radio
synchrotron background. After considering constraints from a variety of
astrophysical and cosmological measurements, we identify a best-fit solution
with string tension $G\mu \simeq 6.5 \times 10^{-12}$ and current $\mathcal{I}
\simeq 2.5 \times 10^6$ GeV. This model yields a convincing fit to the data and
may be testable in the near future by spectral distortion (TMS, BISOU) and 21
cm experiments (HERA, SKA, REACH). We also find that soft photon heating
protects us against current constraints from global $21$ cm experiments.
