In article ,
Dave wrote:

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 portable and
exceeding auto. However, they¹d 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. ³Interference would affect some
stations severely,² 41% could lose a third or more of their covered
population and 18% would lose more than half of their population."

It's a problem on AM also. Since they started broadcasting IBOC KOGO has
a lot of the digital hiss in their audio for whatever reason.

KFI gets messed up evening also with this hiss although it seems to
coming from another station.

I also get this hiss on a pretty close local KVTA on 1520 evenings at
times.

--
Telamon
Ventura, California