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Views: 491
Votes: 0
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Posted: 31 May, 2007
by: Admin A.
Updated: 03 Jun, 2007
by: Admin A.
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Nope not necessarily. Broadcasters can transmit on a VHF high band channel
but they can and will usually label the channel
to match their analog
station. So lets say your Analog
channel
8 Broadcaster has 8.1 and 8.2 listed, They may actually be broadcasting on a UHF channel
like channel
24.
This is a new numbering system for DTV channels. The system, called the “DTV virtual channels,” gives a number for each DTV program service, and almost always uses the analog NTSC channel number as the first number for that station. The use of virtual channels allows stations to use the same channel number “brand” for both NTSC and DTV . The printed listing services have not yet changed their format to show only the DTV virtual channel numbering system. So in the example, the station is using RF Channel 38 for DTV and is transmitting DTV programs with virtual channel numbers 15.n. The 15.n is short hand for 15.1, and 15.2 and 15.3, etc., as there can be more than one DTV program lineup from the station. So, 15.1 is the first DTV program lineup, 15.2 is the second, 15.3 is the third. Some DTV stations may have only one virtual channel , others perhaps as many as six. Transmitting HDTV on one of the channels usually means few other channels are on the air at that time as the HDTV takes most of the DTV channel capacity.
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