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ISDB-Tb frequency DTV channel 14 uses 473.142857 MHz, but ATSC 3.0, DVB-T/DVB-T2, and DTMB, use 473.0 MHz. Channel 37 is reserved for radio astronomy in the United States, Canada, Bermuda , Belize , and the Bahamas , thus there are no television stations assigned to it.
In March 2006, DVB decided to study options for an upgraded DVB-T standard. In June 2006, a formal study group named TM-T2 (Technical Module on Next Generation DVB-T) was established by the DVB Group to develop an advanced modulation scheme that could be adopted by a second generation digital terrestrial television standard, to be named DVB-T2.
The MPEG transport stream delivered by DVB-S is mandated as MPEG-2. DVB-C stands for Digital Video Broadcasting - Cable and it is the DVB European consortium standard for the broadcast transmission of digital television over cable. This system transmits an MPEG-2 family digital audio/video stream, using a QAM modulation with channel coding.
The current DVB-T2 television system is being used to broadcast television on the UHF band nationwide, with the participation of transmission providers: VTV, SDTV, VTC, AVG and DTV, on frequencies from E21–E48.
DVB-T has been further developed into newer standards such as DVB-H (Handheld), which was a commercial failure and is no longer in operation, and DVB-T2, which was initially finalised in August 2011. DVB-T as a digital transmission delivers data in a series of discrete blocks at the symbol rate.
From 2017, to make it easier for people to receive DVB-T2 waves, transmission units often change the channel frequency of stations to the correct channel frequency as prescribed by the Frequency Department and of the main station, called the network. single frequency (SFN). There is also a multi-frequency network (MFN).
Frequency UHF kW Service System 743.25 MHz: 55 0.012 BBC1 South West: PAL System I 775.25 MHz: 59 0.012 Westcountry: PAL System I 801.833 MHz: 62 0.0025 BBC A DVB-T: 823.25 MHz 65 0.012 Channel 4: PAL System I
Frequency UHF kW Operator System 481.833 MHz 22 20 PSB1 (BBC A) DVB-T: 506.000 MHz 25 20 PSB2 (Digital 3&4) DVB-T 530.000 MHz 28 20 PSB3 (BBC B) DVB-T2: 554.000 MHz 31 1 Local TV