Ultra high frequency
However, with the emergence of additional broadcast television networks ( Fox, UPN, WB, and PaxThe PAX Network PAX TV PaxNet or simply PAX is a cable television network formed in 1998. PAX, which is owned by Paxson Communications, shows family-oriented programming. Its programming contains little or no sex, violence or strong language. Unlike most), the concentration of media ownershipConcentration of media ownership is a commonly used terms among media critics, policy makers, and others to characterize ownership structure of media industries. Media ownership is said to be concentrated usually in one or more of the following ways., and the proliferation of cable televisionCable television or Community Antenna Television CATV (and often shortened to 'cable') is a system of providing television, FM radio programming and other services to consumers through fixed coaxial cables, rather than by the older and more widespread rad, digital televisionDigital television DTV uses digital modulation and compression to broadcast video, audio and data signals to television sets.