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I think they're a bit late to the game.
Broadcasting is fading in the USA in favor of "narrowcasting" where we get highly focused content via podcasts,etc through cellular and wifi providers. Cellular providers aren't interested in the public safety aspects that broadcasting offers. There's no money to be made given their current business model.
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On Apr 25, 2016, at 8:42 AM, 'Andrew O'Brien' k3ukandy@...
Digital Radio Mondiale has submitted comments to the FCC in regards to the AM Revitalization (MM Docket No. ET 13-249). While the organization says that it is supportive of changes to rules for AM broadcasters, in its comments it also submits a proposal for the FCC to consider its DRM30 standard mode for replacing analog sound broadcasting in frequency bands below 30 MHz. The organization cites its recent rollout in India as an example of its benefits.Among the benefits of the DRM 30, according to DRM, is its ability to provide data services — such as emergency warnings, data carriage, and EPG — to supplement the program content or for independent purposes as required by Recommendation ITU-R BS.1348.DRM says that its service can provide AM audio quality close to that of FM. It also offers up to three audio channels and one data on a single frequency, as well as stable reception over long distances. The organization claims that current infrastructure can be used and upgraded.In addition, more content is available, according to DRM. For example, additional audio/visual/text content; web pages and links; and stereo/surround sound/surround sound 5.1.
“While we recognize that the United States has selected HD Radio technology for its standard, other systems are in wide use in other parts of the world,” said Ruxandra Obreja, DRM Consortium chairman. “We respectfully request that the FCC consider the universality which could be created by multi-standard receivers.”
- See more at: http://www.radioworld.com/article/drm-recommends-drm30-for-fccs-am-revitalization/278678#sthash.O5qbMudu.dpuf