Quote:
Originally Posted by HarryT
Granted. But, on the other hand, switching off one FM station probably frees up space for 10 digital ones, so I would have expected that the migration of FM stations to DAB would result in increased bandwidth per station, rather than reduced.
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well yes but no... they arent giving the bandwith to DAB! they are selling the 'spare' bandwith off to other wireless comms.
eg pre DAB Radio bandwith used 60% of available spectrum
They have estimated if they go digital Radio DAB needs only 15% so they sell off/assign the other 45% to other uses. Then DAB is left with 15% or no expansion room... add new stations means compress existing.
exactly the same is happening with digital TV they have given over a certain amount of space in the spectrum but didnt take HD into account really! so freeview HD being introduced is messing it up and they are having to basically make the pictures worse! BBC HD is now a lower quality picture than when it launched!