The FCC last week adopted a Report and Order that finalizes authorization of the Digital Transmission System (DTS) distribution model. DTS can be used by television stations as an alternative to a single-transmitter model that makes it easier for those stations to reach viewers in areas obstructed by man-made and natural barriers. DTS has been allowed on a tentative basis since 2004. According to the Report, DTS "employs multiple synchronized transmitters spread around a station's service area, rather than the current single-transmitter approach. Each transmitter broadcasts the station's DTV signal on the same channel. Due to the synchronization of the transmitted signals, DTV receivers treat the multiple signals as reflections or 'ghosts' and use 'adaptive equalizer' circuitry to cancel or combine them to produce a single signal." You can read the Report and Order here.