http://www.radioworld.com/pages/s.0121/t.14665.html
"At 10% IBOC transmission power, most stations would gain covered
population, approximately equaling analog indoor and ****table and
exceeding auto. However, they’d pay the price from digital interference
to their analog signals. At this power level, stations would lose an
average of 26% of their FM auto population coverage because of IBOC
interference, the lab concludes. “Interference would affect some
stations severely,” 41% could lose a third or more of their covered
population and 18% would lose more than half of their population."
