10
AN OVERVIEW OF DIGITAL AUDIO
BROADCASTING (DAB)
This section gives a brief overview of digital radio, or DAB as it is also
known, along with some useful addresses if you require further
information.
The Cambridge Audio DAB300 lets you receive and listen to the
abundance of digital radio broadcasts available. DAB uses digital
signals rather than traditional analogue transmissions, providing clear,
high quality reception.
Digital radio is broadcast as groups of data called multiplexes. Each
multiplex contains a number of stations, transmitted at a set frequency,
which the DAB300 decodes. The DAB300 can receive multiplexes
broadcast on Band III DAB frequencies. The number of multiplexes and
radio stations you receive will vary depending on your location. With
DAB, radio stations have labels for identification. Instead of needing to
know a particular frequency to listen to your favourite broadcast you can
simply select the station name.
DAB also enables broadcasters to transmit additional data with the
audio, which takes in other audio channels, text and in the future,
perhaps computer data and images. Additional data, such as text
containing programme or multiplex information, is shown on the
DAB300’s display.
Digital Radio Development Bureau
The Radio Centre
77 Shaftesbury Avenue
London W1D 5DU
Telephone: 020 7306 2630
E-mail: info@drdb.org
Website: www.drdb.org
BBC Digital Radio
Room 5661
Broadcasting House
Portland Place
London W1A 1AA
E-mail: bbcdigitalradio@bbc.co.uk
Website: www.bbc.co.uk/digitalradio
SPECIFICATIONS
Sample Rate 48kHz
Frequency Range VHF (174MHz to 240MHz) Band 3
Sensitivity -96dBm
Signal to Noise 99dB
Frequency Response 20 - 20kHz +0.1, -0.3dB
Distortion <0.01%, 1kHz, 2vrms o/p
Stereo Separation >60dB, 20Hz- 20kHz
Input Voltage 220-240V AC~50Hz
Maximum Power Consumption 10W
Standby Power Consumption 7W
Dimensions(mm) 80(h)x430(w)x285(d)
Weight 3.5kg
USEFUL ADDRESSES
DAB300