Specifications

Guide to digital radio

Your EVOKE-1 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 EVOKE-1 for decoding. Your EVOKE-1

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 EVOKE-1.