The FCC also previously barred companies from owning more than one television station within a single market, unless it operated as a satellite station (a full-power station that relays programming from its parent station to areas within the market that are not adequately covered if at all by the main signal) or a low-power station (either one that maintains its own programming or operates as a translator); however, it eventually allowed operators of public television stations to sign-on or acquire a second station that did not repeat the parent's signal (some of which were originally licensed as commercial outlets).