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How DAB Works

DAB works by taking the audio from many different radio stations, converting the audio from each station to digital format, then joins them all together to make one big digital signal. This is called “multiplexing”.

The digital signal is broadcast by a transmitter, then when received, your listeners radio decodes the digital signal back into individual audio radio stations.

Being digital the big advantage of DAB is that it can broadcast any data. As well as listeners hearing your station they can also see text and pictures you broadcast as well. The most basic example of this is a simple now playing message. But what’s to stop you adding local news, weather or more. As for traffic, show live pictures with grabs from on-street webcams.

When you open your imagination the possibilities are almost endless. When you factor in how useful this could be to advertisers, then you’re into a whole new profitable world.

You already have most of the tools you need to open this exciting world.

Many stations use scheduling, traffic and playout systems such as Selector and Master Control. Adding information about where pictures and text are stored is an easy process. Now, when you play a song, your playout system feeds your Content Manager the text/picture information in sync with the audio. Your Content Manager then packages that for all your broadcast platforms; FM, DAB, WiFi, Website, Phone App. The graphic below shows how it all links together.

Like to try this for real? Find out how to take part in the trial broadcasts.