  We discuss the radio spectrum of Sgr A* \index{Sgr A*, radio spectrum} in the
frequency range between $\approx 1\,{\rm GHz}$ and $\approx 1\,000\,{\rm GHz}$,
show that it can be explained by optically thin synchrotron radiation
\index{Sgr A*, synchrotron radiation, optically thin} of relativistic
electrons, and point toward a possible correlation between the spectrum of Sgr
A* and larger-scale ($\la 50\,{\rm pc}$) radio emission from the Galactic
Center \index{Galactic Center} region.
