A more sophisticated sytem for broadcasting digital TV (DDT) is being developed and is scheduled for switchover in 2018. At the same time, Freeview and radio channels are to be switched to another part of the broadcasting spectrum.
The shift to a more sophisticated system and the planned switching of channels would not be compatible with millions of TVs and set top boxes, so many users are likely to need new equipment to receive programmes, and it is thought that up to 30% of homes might need a new aerial.
By the end of 2018, industry forecasts expect 80% takeup of primary sets to DVB-T2/MPEG-4 receivers.
Moving the Freeview channels will face broadcasters like BBC, ITV and Channel 4 with huge costs to change their masts and broadcasting technology.
Digital Doctor column in Radio Times, 3 Oct. 2013
