7
700WLW
Guest
DavidEduardo said:And that is about the sum total of the full signal, viable AM count in the top 100 markets.
"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. Making AM-HD work well as a long-term investment is seen as an expensive and risky challenge for most stations and their owners. With the bulk of successful AMs airing news, talk and sports, the improved fidelity advantage of HD and stereo seem only marginally attractive. There is the significant downside of potential new interference to some of their own AM analog listeners as well as listeners of adjacent-channel stations. And of course we still have no nighttime authority for AM-HD."
http://www.rwonline.com/pages/s.0044/t.557.html
Sounds more like, the AM stations tried IBOC, then realized that it does not work on the AM band, as advertised.