In October 2005, the Minister for Communications, Information Technology and the Arts announced a
framework to guide the introduction of digital radio in Australia. The CBAA has
lobbied hard over the last decade for community broadcasters to have the same entitlements to digital capacity as the national and commercial broadcasters.
The Minister’s framework detailed a staged rollout for digital radio services. During the first stage, ‘wide-coverage’ community radio broadcasters have secured access rights of 128 kbps, up to a maximum of 256 kbps per available ‘multiplex’ in each state capital city, with that capacity to be used on a collective basis.
In other words, all wide-coverage community broadcasters receive a combined allocation of digital spectrum and work together to figure out how it’s used. New encoding technologies may enable more efficient use of the spectrum so that better use can be made of the available capacity.
By contrast to analogue, radio stations operating in digital transmit a signal to a multiplex that combines several audio channels and encodes them into a single data stream. Data and other services – such as multimedia content – can then be added to form an ‘ensemble’.
As part of the digital radio framework, the community broadcasting sector also has the right to collectively manage the operations of state-based multiplexes – the transmission infrastructure for digital radio – through a separate joint company and in consultation with commercial providers.
Community broadcasters will need to deliver a stream of ‘community radio content’ to each state-based multiplex to be readied for broadcast. Such an approach, and the nature of digital technology, requires the establishment of new content, management, and technical structures.