wrote in message
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David Eduardo wrote:
"RHF" wrote in message
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For One and All,

IBOC - Redefining AM Radio As We Know It :

To properly implement IBOC in the AM Radio Band
both Day and Night would require that AM Radio
Station Service in the USA be reclassified as a
"Local Voice Media Service".

Which, for all practical purposes, it is. Night listening to AM is less
than
2% of the population to start with. Night listening beyond the groundwave
contour is restricted to a handful of stations as most US AMs have vastly
reduced night coverage compared ot day coverage. So, there are very few
listening to AM at night and very few stations capable of getting a
skywave
outside the local coverage area that is consistently listenable.

I think you should define this "2% of the population" statistic a bit.
Many people have clock radios by their beds and tune into AM at night.
Ever hear of "Coast to Coast AM?".

Coast to coast gets a big share of nothing. In overnights, less than 1% of
the population is listening to the radio, and they get, in most markets,
about 10% or less of that.

AM at night gets around a 2 rating. Radio overall about a 7 (7 to Midnight)
A rating point is 1% of the universe. In overnights, the rating is below a 2
for all radio, and below a 0.3 rating for AM.