White space spectrum is the gap between TV broadcasts on the digital television band, freed up by the increased efficiency of digital over analog broadcasting.
The FCC first proposed to open up this spectrum in 2008, but met with opposition from broadcasters concerned about interference.
The FCC decision will prompt other comms regulators to look more closely at the possibilities of using free-up TV spectrum.
Australian regulator ACMA said at a recent conference that it was monitoring the issue, but its decision will depend on restack and wireless microphones.
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