Still, HD Radio is only in its infancy. Unlike digital TV, HD Radio broadcasts won't replace analog broadcasts (at least not in the near future) but will run parallel to them. Stations supporting ...

Analogue radio services, for example Radio 1 or Radio 4, are broadcast from a transmitter using separate radio frequencies. Digital radio (DAB) allows us to be more efficient and to group a number ...

A major drawback of the analogue wireless system has been the ease with which the police radio frequency can be accessed by outsiders. There have been instances where Chinese-made radio ...