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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 than UHF with the lower power they are assigned, and they do not penetrate buildings as well, especially in larger cities.
Digital television (DTV) is the transmission of television signals using digital encoding, in contrast to the earlier analog television technology which used analog signals. At the time of its development it was considered an innovative advancement and represented the first significant evolution in television technology since color television ...
ZFB-TV (analog channel 7) and ZBM-TV (analog channel 9), the two television stations in Bermuda, switched to digital channels 20.1 and 20.2, respectively. [122] Like its parent nation (the United Kingdom) and unlike the United States, Canada, and the Bahamas (which have been transitioning to ATSC ), Bermuda switched over to DVB-T .
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
Outdoor antennas provide up to a 15 dB gain in signal strength and 15-20 dB greater rejection of ghost signals in analog TV. [6] Combined with a signal increase of 14 dB due to height and 11 dB due to lack of attenuating building walls, an outdoor antenna can result in a signal strength increase of up to 40 dB at the TV receiver. [6]
HDTV antenna amplifiers counteract poor picture and sound on local TV broadcasts caused by a degraded cable signal, which may occur when you use an extra-long run of cable or a line that runs ...