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Prior to the conversion to digital TV, analog television broadcast audio for TV channels on a separate FM carrier signal from the video signal. This FM audio signal could be heard using standard radios equipped with the appropriate tuning circuits.
The five main ATSC formats of DTV currently [when?] broadcast in the U.S. are: . Standard definition—480i, to maintain compatibility with existing NTSC sets when a digital television broadcast is converted back to an analog one [citation needed] —either by a converter box or a cable/satellite operator's proprietary equipment
Over 480 stations were broadcasting digitally on the VHF spectrum after the transition, up from only 216 on the frequencies before. Many antennas marketed for digital TV are designed for UHF, which most digital stations use. VHF analog signals travel further than UHF signals, but watchable VHF digital signals appear to have a more limited range ...
Movies! maintains subchannel-only affiliations with approximately 45 stations. Bounce TV – Bounce TV is a digital multicast network owned by Katz Broadcasting; co-founded by Martin Luther King III and Andrew Young, and launched on September 26, 2011. Its programming is aimed at African Americans between the ages of 25 and 54, featuring a mix ...
On July 23, 1996, WRAL-TV (the then CBS affiliate in Raleigh, North Carolina; now affiliated with NBC) became the first television station in the United States to broadcast a digital television signal. [2] HDTV sets became available in the U.S. in 1998 and broadcasts began around November 1998.
With Digital TV was introduced, all UHF channels will allocate their frequencies and can be served for broadcast companies such as ABS-CBN, GMA Network and TV5, among others as the National Telecommunications Commission plans to migrate all VHF channels to digital UHF channels before December 31, 2015, though this was delayed several times.
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