This article is from the Satellite TV FAQ, by Gary Bourgois flash@lopez.marquette.mi.us with numerous contributions by others.
DATS is Digital Audio Transmission System, and SEDATS is Spectrum Efficient
Digital Audio Transmission System, which are replacing SCPC for many
national services. All the Major networks, CBS, NBC, ABC, MUTUAL and
quite a number of syndicators (Howard Stern, etc) are now on DATS and
SEDATS. These signals are primarily on the Aurora (C5) Satellite. There
is no home DATS or SEDATS receiver, and no known experimenter project
for receiving this audio. We understand that the manufacturers of these
receivers WILL sell them to anyone, including home dish owners, but
the $4000 price tag for a mono audio only receiver has thus far placed
this technology out of reach for 99.9% of the audio experimenters we know.
 
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