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Buildings and trees can hinder your signal strength, but you can use the FCC's digital TV reception map to check for local TV channels and reception quality in your ZIP code. Sources Statistics ...
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
Area served City of license VC RF Callsign Translating Network Notes ~Boise, ID: Ontario, etc. 13 30 K30QD-D: KTVR: PBS: satellite of KOPB-TV ch. 10 Portland OPB Plus on 13.2, PBS Kids on 13.3, OPB Radio on 13.4 Albany: Albany: 17 34 KVDO-LD: KSLM-LD: QVC: YTA on 17.1, Weather on 17.2, Retro TV on 27.1, Azteca América on 37.1 Applegate Valley ...
High-definition television (HDTV) in the United States was introduced in 1998 and has since become increasingly popular and dominant in the television market. Hundreds of HD channels are available in millions of homes and businesses both terrestrially and via subscription services such as satellite , cable and IPTV .
A broadcaster may opt to use a standard-definition (SDTV) digital signal instead of an HDTV signal, because current convention allows the bandwidth of a DTV channel (or "multiplex") to be subdivided into multiple digital subchannels, (similar to what most FM radio stations offer with HD Radio), providing multiple feeds of entirely different ...
The ATSC signal is more susceptible to changes in radio propagation conditions than DVB-T and ISDB-T. It also lacks true hierarchical modulation, which would allow the SDTV part of an HDTV signal (or the audio portion of a television program) to be received uninterrupted even in fringe areas where signal strength is low.
In 2007, only the greater São Paulo metropolitan area could receive the signal. Belo Horizonte and Rio de Janeiro began to receive free-to-air digital signal on April 7 and April 8, 2008, respectively. [100] On August 4, 2008, and October 22, 2008, Goiânia and Curitiba began to receive DTV signal, respectively.
The "primary service area" is the area served by a station's strongest signal. The "city-grade contour" is 70 dBμ (decibels relative to one microvolt per meter of signal strength) or 3.16mV/m (millivolts per meter) for FM stations in the United States, according to Federal Communications Commission (FCC) regulations.
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