The British Broadcasting Service first broadcast audio signals in the digital format in the year 1995. FM radio and AM radio signals suffer from noise and other forms of distortions because high rise buildings and towers interfere with the waves. Digital Audio Broadcasting uses processors which eliminate these distortions. The programmes are very clear. DAB radios make use of MPEG and COFDM technologies to convert the analogue signals into digital signals.
There are three types of DAB radios available in the UK now. They are the Portable DAB Radio, the Table-Top DAB Radio and the Clock DAB Radio.
All the Radio sets are accompanied by Product Manuals which describe the features of the radio you wish to buy. But before you actually decide to buy one, it would be helpful to familiarize yourself with the technology and the products available. The programmes are broadcast from Digital Stations. You can customise some of your favourite stations and avoid looking for them every time you tune in. The Radio Data System gives you details of the broadcast on a LCD screen. The Pause and Rewind options help you to save your programmes when there is an interruption in your listening. The Electronic Programme Guide is a schedule of programmes given in advance to listeners. This can help them to tune in to their programmes. An External Line-in connects the DAB radio to a CD player or a DVD player. One can record programmes in his way. DAB broadcasts are free in the UK. The customer has to pay for the Radio set only and can enjoy uninterrupted hours of programmes.
At present, DAB radio broadcasts have one or two minor drawbacks. Programmes are broadcast in the mono format and not in the stereo format. DAB broadcasts cover only a limited area and when you are out of this cover, the reception on your set becomes feeble. These can be overcome when technology advances.
In the UK, the DAB radio broadcasts have become very popular in recent times. All the features mentioned above make the DAB radio an indispensable entertainment tool. At any place, and at any time, tune into your favourite station and start rocking.