Satellite transmission of network signals is allowed only in areas where local signals are poor.
It would also permit satellite broadcasters, for the first time, to carry local signals in local markets.
Darwin was the last capital city to receive the channel, with a local signal launched on 20 May 1994.
Satellite companies are prevented under existing law from carrying the local signals - a handicap that has limited their appeal.
A local signal may travel by more than one path from the transmitter to receiving antenna.
They are further categorized as being input, output, or local signals.
The formation of these arbors is regulated by the strength of local signals during development.
The distant signals may block local weak signals in some cases.
Some of the tracks to the depot and the local signal were removed during summer 2006.
Because they do not overlap, the beams' radio frequencies can be reused to carry local signals in different markets.