  This paper presents observations of Cygnus A at 74 and 327 MHz at angular
resolutions of approximately 10" and 3", respectively. These observations are
among the highest angular resolutions obtained below 1000 MHz for this object.
While the angular resolution at 74 MHz is not sufficient to separate clearly
the hot spots from the lobes, guided by 151 and 327 MHz images, we have
estimated the 74 MHz emission from the hot spots. We confirm that the emission
from both the western and eastern hot spots flattens at low frequencies and
that there is a spectral asymmetry between the two. For the eastern hot spot, a
low-energy cutoff in the electron energy spectrum appears to explain the
flattening, which implies a cutoff Lorentz factor \gamma_min ~ 300, though we
cannot exclude the possibility that there might be a moderate level of
free-free absorption. For the western hot spot, the current observations are
not sufficient to distinguish between a free-free absorped power-law spectrum
and a synchrotron self-absorbed spectrum.
