How is DTV different from digital broadcast satellite (DBS)?
While broadcast DTV and DBS use digital transmission, a key difference is that DTV broadcasts are over-the air and free to all viewers, whereas DBS is a pay subscription service. Regardless of whether a program is broadcast over-the-air or sent to consumers digitally, such as with many DBS services, consumers still must purchase a new digital receiver in order to view the program digitally.
