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Digital television launched terrestrially in Taiwan on July 2, 2004. Currently, [ when? ] there are simulcasts of analogue and digital television. Taiwan plans to replace an American analogue broadcasting system NTSC with a European digital TV system DVB-T2 by 2012 using 6 MHz channel bandwidth just like in Colombia , Panama , and Trinidad and ...
During World War II, the frequencies originally assigned as channels 13 to 18 were appropriated by the U.S. military, which still uses them to this day. It was also decided to move the allocation for FM radio from the 42-50 MHz band to a larger 88-106 MHz band (later extended to the current 88-108 MHz FM band).
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
Digital television in New Zealand currently uses UHF frequencies between channels 26 and 39 (510-622 MHz), with channel 25 used as a guard band. Channels 40 to 48 are currently allocated but reserved; frequencies above this have been reallocated to 4G (LTE) mobile phone services in the 700 MHz band.
Temporary assignments retain, unmodified, the call sign of the corresponding permanent allocation; this includes translator-style calls (a format, such as W55ZZ-D, based on RF channel number plus a sequential identifier) even on those temporarily moving to another frequency. Digital Television distributed transmission system (multiple ...
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 ...
The Pan-American television frequencies are different for terrestrial and cable television systems. Terrestrial television channels are divided into two bands: the VHF band which comprises channels 2 through 13 and occupies frequencies between 54 and 216 MHz, and the UHF band, which comprises channels 14 through 36 and occupies frequencies between 470 and 608 MHz.
The analog switch-off rendered all non-digital television sets unable to receive most over-the-air television channels without an external converter box; however, low-power television stations and cable TV systems were not required to convert to digital until 1 September 2015.