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Guide to digital radio

This section provides a brief guide to digital radio (DAB), explains how the features of your DRX-701ES provide access to it, and provides some

useful addresses for finding out more.

Your DRX-701ES enables you to receive and listen to DAB radio programmes. Digital Audio Broadcast (DAB) uses digital signals rather than

traditional analogue signals enabling near CD-quality audio with virtually interference-free reception. DAB also enables broadcasters to transmit

additional data along with the audio including other audio channels, text and in the future, perhaps computer data and images.

Digital radio is broadcast as groups of data called ensembles or multiplexes. Each multiplex can contain a number of stations (services) and

each station contains a primary service and can contain secondary services as illustrated in the following diagram.

Each multiplex is transmitted in a set frequency range and received by your DRX-701ES for decoding. Your DRX-701ES enables you to receive

multiplexes broadcast in frequency band III (174-240 MHz) and store the services in each multiplex for you to access. The number of

multiplexes you receive will vary depending on your location. Band III is divided into 41 channels identified as 5A to 13F.

Each channel can

contain one multiplex. Channels allocated to the UK are in the range 11B to 12D.

Multiplexes and stations have labels (names) which are used to identify them. Instead of needing to know a particular frequency to listen to

your favourite broadcast you can simply select the station name. Secondary services and additional data such as text containing programme or

multiplex information are also easily accessed using your DRX-701ES.

Useful addresses

The following addresses provide additional useful information about digital radio including coverage, available stations and usage tips:

DAB Signal

Multiplex

National DAB

e.g. BBC National DAB

Primary DAB Services

Main higher bandwidth services such as music or speech

e.g. BBC Radio 4

Secondary DAB Services

Lower bandwidth services such as news, text information or speech

e.g. Parliament

BBC Digital Radio tel: 08700 100 123

Broadcasting House web: www.bbc.co.uk/digitalradio

Portland Place

London, W1A 1AA

Digital Radio Development Bureau tel: 020 7306 2630

The Radio centre e-mail: [email protected]

77 Shaftesbury Avenue web: www.drdb.org

LONDON, W1D 5DU

Digital One tel: 020 7288 4600

20 Southampton Street e-mail: [email protected]

LONDON, WC2E 7QH web: www.ukdigitalradio.com

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