Norway is the first country in the world to start switching off its analogue radio signals.
The Nordic nation will start turning off the FM signal at 11:11 local time (10:11 GMT) on Wednesday, in favour of Digital Audio Broadcasting, or DAB.
The digital signal gives better quality and coverage than analogue – and for about an eighth of the cost.
But there are some who are concerned about the switch-off’s potential impact on the elderly and motorists.
By the end of the year, national networks will only be available on DAB, while local stations have five years to make the switch.