  Over the last three decades, several experimental initiatives have been
launched with the goal of observing radio-frequency signals produced by
ultra-high energy neutrinos (UHEN) interacting in solid media. Observed
neutrino event signatures comprise impulsive signals with duration of order the
inverse of the antenna+system bandwidth, superimposed upon an incoherent
(typically white noise) thermal noise spectrum. Although bulk volume scattering
(VS) of external radio-frequency signals is well-studied within the radar and
glaciological communities, and can, in principle, contribute to that
background. However, thus far, neutrino experiments have neglected to account
for VS when projecting event rates. Herein, we present both model-dependent and
model-independent constraints on both coherent, and also incoherent volume
scattering, and assess their impact on UHEN experiments. We find that VS
contributions are only weakly constrained by extant data; stronger limits may
be obtained with dedicated calibration experiments.
