The switchover began early on Wednesday morning when BBC Two's analogue signal was permanently turned off at the Oxford transmitter group.

BBC: England

Two-thirds of its 4.5m subscribers receive the channel through a scrambled, over-the-air, analogue signal, not as part of a broader cable or satellite package.

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Northern Ireland is the last place in the UK to switch off the analogue signal which has been in use for more than 70 years.

BBC: Digital Switchover

According to Kenya's Daily Nation newspaper, the Consumer Federation of Kenya (Cofek) said the first notice about the analogue signal switch-off, planned for 31 December 2012, was given on 7 December 2012.

BBC: Kenyan digital TV switchover: Post-election date urged

Bandwidth - which in the UK will come when the analogue signal is switched off - needs to be freed up by regulators and manufacturers have to provide phones that can cope with TV viewing alongside the myriad other functions already eating up battery life.

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They found that it was possible to transmit text information in the "spare lines" transmitted on the analogue TV signal.

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The analogue TV signal in Northern Ireland will be turned off permanently on Tuesday night, completing the final stage of the UK digital switchover.

BBC: Digital Switchover

Kenya's high court has ordered that the date for the switch off of the analogue television signal be delayed, preferably until after the March poll.

BBC: Kenyan digital TV switchover: Post-election date urged

ILA, in which the signal is converted to analogue form, is smoother and better because it makes no assumptions about the number of pixels in the original digital signal.

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The high-end devices have a fully symmetrical layout for operation with analogue audio sources, thus ensuring absolutely symmetrical signal transmission from the source to the headphones.

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