posted on Jun, 14 2008 @ 02:09 AM
reply to post by krill
wheather this means they will be using the same spectrum as before but just using a digital signal be broadcast over them
For digital TV, we use DVB here in Europe (most likely the same in Americas). For terrestrial purposes, there is DVB-T and for satellite, there is
DVB-S. DVB-T is a standard that generally uses the same frequency band as analogue TV transmission. However, because you have one "multiplex" per
channel, and one multiplex contains about 6 channels, the "station-per-megahertz" ratio rises from about 0.2 to about 1
So yes, the digital terrestrial (and also digital satellite) broadcasting uses the same frequency spectrum as their analog counterparts, with the main
difference that you can have about 6 times more channels. Good for the media, huh? More brainwashing channels to choose from.
Similar with DAB (digital audio broadcasting), but this will not use the 87,5-108 MHz range which FM radio transmission did, but will move to about
200MHz area, which is the bottom part of the TV spectrum. And also, spectrum will get used much more efficiently - much more stations per MHz.
[edit on 14/6/08 by Disney]