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Should the FCC allow FM HD Radio stations to use asymmetrical sideband transmission more routinely?

Federal Register publication has triggered public comment filing deadlines on the question.

Currently, stations that wish to raise their digital power levels unevenly need a waiver of the FCC's rules to do so.

Asymmetrical sidebands are a way for FMs to raise HD Radio power while minimizing interference to adjacent stations, according to proponents.