  We have assembled an 8.4 GHz survey of bright, flat-spectrum (alpha > -0.5)
radio sources with nearly uniform extragalactic (|b|>10 deg) coverage for
sources brighter than S_{4.8 GHz} = 65 mJy. The catalog is assembled from
existing observations (especially CLASS and the Wright et al. PMN-CA survey),
augmented by reprocessing of archival VLA and ATCA data and by new observations
to fill in coverage gaps. We refer to this program as CRATES, the Combined
Radio All-sky Targeted Eight GHz Survey. The resulting catalog provides precise
positions, sub-arcsecond structures, and spectral indices for some 11,000
sources. We describe the morphology and spectral index distribution of the
sample and comment on the survey's power to select several classes of
interesting sources, especially high energy blazars. Comparison of CRATES with
other high-frequency surveys also provides unique opportunities for
identification of high-power radio sources.
