Article from All Access about a test of digital-only boosters to enhance HD signals. Note that the program is co-funded by the National Association of Broadcasters and iBiquity.
http://www.allaccess.com/net-news/archive/story/83537/fm-iboc-technology-development-progresses
Link within article above to test results: http://www.nabfastroad.org/SFN-InterimFTRWD2XAB.pdf
Link to NAB/FASTROAD home page: http://www.nabfastroad.org/
EDIT: after re-reading the category choices, I realized that this post could go into the "HD Radio" forum...there's a thread already there on this subject. Sorry for the duplication/mis-categorization.
http://www.allaccess.com/net-news/archive/story/83537/fm-iboc-technology-development-progresses
Link within article above to test results: http://www.nabfastroad.org/SFN-InterimFTRWD2XAB.pdf
Link to NAB/FASTROAD home page: http://www.nabfastroad.org/
EDIT: after re-reading the category choices, I realized that this post could go into the "HD Radio" forum...there's a thread already there on this subject. Sorry for the duplication/mis-categorization.