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DVB-T2 is an abbreviation for "Digital Video Broadcasting ... to ease receiver lock even if the nominal center frequency of the T2 signal is up to 500 kHz off. ...
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.
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.
[70] [71] This time, in addition to H.264 being used as the codec, the broadcast utilised DVB-T2 rather than the DVB-T used by standard Freeview and the earlier test broadcasts, thus requiring users to purchase new reception equipment. Freeview HD was the first operational TV service in the world to use the DVB-T2 standard. [72]
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).
The DVB-T2 standard gives more robust TV reception and increases the possible bit rate by over 30% for single transmitters (as in the UK) and will increase the maximum bit rate by over 50% in large single-frequency networks (as in Germany and Sweden).
VK3RTV is an experimental Amateur Television Repeater licensed by the ACMA to Amateur Radio Victoria. In late September 2009 the former single analogue channel was converted to a 2 channel DVB-T digital system. The output of the transmitter is on 445.5 MHz which can be received on some set top boxes and digital television sets.