  The Next Linear Collider(NLC) will provide a excellent tool for probing the
detailed nature of the top quark. By extending the recent analysis of
Dokshitzer, Khoze and Sterling, we perform a preliminary examination of the
influence of an anomalous chromomagnetic moment for the top, $\kappa$, on the
spectrum of gluon radiation associated with $t\bar t$ production. In
particular, we analyze the sensitivity of future data to non-zero values of
$\kappa$ and estimate the limits that can be placed on this parameter at the
NLC with center of mass energies $\sqrt {s}=$ 500 and 1000 GeV.
