Hope I haven't exceed as to how much can be quoted, but for those that can't pull up the PDF, here are the first two paragraphs:
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As a Chief Engineer of an NPR station, and the
owner of a small market AM station, I had high hopes
that IBOC would be a positive step in the evolution of
terrestrial radio.
It certainly was initially touted as a way to bring AM
and FM radio to the next level for the future. Unfortunately,
I have learned that IBOC comes at a very high price
to first adjacent stations that are your neighbors on the
radio dial.
White Noise Hash
Rhode Island Public Radio operates WRNI-FM, a 2 kW
kilowatt Class A FM on 102.7, licensed to Narragansett Pier,
RI. It serves southern Rhode Island and WRNI-AM serves
northern Rhode Island.
WRNI-FM is a grandfathered, short spaced allocation
to WKLB-FM 102.5 in Waltham, Massachusetts. On
December 4, 2008, the licensee of WKLB-FM received an
Experimental Permit from the FCC to conduct tests at
higher IBOC levels.
When those tests started, the coverage area of WRNIFM
was dramatically reduced by white noise on 102.7.
The next paragraph reads:
"In come the complaints"
drt