The TV region covering Oxfordshire, parts of Berkshire and Buckinghamshire, has completed the first stage of the digital switchover.
Analogue BBC Two was permanently turned off at the Oxford transmitter group and digital TV boosted to reach all areas.
Homes already watching Freeview will need to retune their TVs and boxes in order to regain their BBC services, which are missing this morning.
The start of TV switchover means that 6,000 viewers in digital blackspots such as Guiting Power and Chipping Norton can get BBC Freeview channels for the first time, while picture quality will improve for many existing viewers.
The process will be completed on 28 September, when the remaining analogue channels will be switched off. Further Freeview channels from ITV, Channel 4 and Channel 5 will then be available from local transmitters for the first time.
DTG Staff | 14.09.2011