Digital terrestrial television

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Two digital terrestrial television receiving antenna on the roof, upper antenna facing Tokyo Tower and lower one to another Local Television Stations in Kantō Plain of Japan until Tokyo Skytree operates. (For ISDB-T system)

Digital terrestrial television (DTTV or DTT) is the technological evolution of broadcast television and an advancement of analog television. DTTV broadcasts land-based (terrestrial) signals. The purposes of digital terrestrial television, similar to digital versus analog in other platforms such as cable, satellite, and telecommunications, reduced use of spectrum and to provide more capacity than analog, provide better quality picture, and to lower operating costs for broadcast and transmission (after the initial upgrade costs). A terrestrial implementation of digital television (DTV) technology uses an aerial to broadcast to a conventional television antenna (or aerial) instead of a satellite dish or cable television connections.

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