As digital radio is broadcast from a multiplex transmitter where multiple station signals are broadcast simultaneously in a stream of data, individual stations do not need to operate their own transmitters. Instead, a station’s signal is digitised at the station and then sent to the multiplex transmitter site via a dedicated network link. Federal legislation allows community broadcasters to transmit digital radio services by accessing a portion of a multiplex transmitter. The multiplex transmitters used by community broadcasters are operated by commercial radio stations. In accordance with the legislation, eligible community licensees can access up to two-ninths of the multiplex capacity. As there are varying numbers of community licensees sharing this capacity in each city, the exact amount of capacity available to each station varies from city to city.