On Feb 23, 11:57 am, David wrote:
At sunup, the AM band goes to **** here in Southern California. You
lose more than half the stations.

No big surprise, but luckily, looks like AM IBOC is pretty dead:

"RW Opinion: Rethinking AM's future"

"Only 175 or so AM stations have even licensed AM-HD. For a number of
reasons, quite a few have tried it and taken it off the air, or so the
anecdotal evidence suggests. (Ibiquity no longer reports in its public
summaries whether a station is on the air.)"

http://www.rwonline.com/pages/s.0044/t.557.html

Here comes Edweeeeeeenie ! :-)