If you're using the Dish western arc satellites, it won't be much of a concern soon. Dish is eliminating most of the SD channels as they move the HD channels off of the 129 degree satellite to either the 110 or 119 satellites in preparation for ending the lease on the 129 sat. Those subscribers that are still using an obsolete SD only receiver will need to arrange with Dish for an upgrade to an HD capable receiver. Notices have been going out for months.