A small (i.e. usually 18 inch) digital satellite receiver. Generally each subscriber gets their own separate channel over which streamed data from the channels they pay for is all blasted simultaneously, MPEG encoded and encrypted (so&that people can only receive their own paid data channel, rather than other peoples'). They thought this would be a good idea since there's "unlimited" bandwidth, but they vastly underestimated the bandwidth requirements, so DSS et al look crappy.