On Sep 28, 11:28*pm, SMS wrote:
On 9/28/2010 9:49 PM, RHF wrote:

Conclusion : Why DAB Eureka 147 failed in the UK :
Maybe the reason IBOC "HD" AM& *FM Radio will
succeed in the USA.

Two things led to the IBOC solution in the U.S.:

1) There was no spectrum available for a digital-only service.

2) Broadcasters wanted an IBOC solution because it did not require the
purchase of additional spectrum or licenses.

Now there's talk of a new digital-only band in the space where analog TV
channels 5 and 6 used to be. This would be especially well suited to low
power FM stations. It would likely use iBiquity technology as well
because the silicon used for HD Radio could be easily modified for the
new band. With the low power stations moved off of FM there would be
less of an issue with increased power on HD FM causing interference to
those stations. The big issue with HD right now is that the power levels
are too low to provide equivalent coverage to FM.

The addition/adoption of HD has striking parallels to the
addition/adoption of FM radio in the 20th century. It took FM 40 years
to become as ubiquitous as AM. Those that complain that HD is taking too
long to become ubiquitous have no understanding of the radio business
and how hard it is to replace the installed base of receivers.

In any case, it all is coming together for HD in the U.S. with huge
increases in receiver sales, more vehicle manufacturers including HD,
and the HD consortium deciding to assist smaller stations with the
conversion to HD by helping with funding and engineering expertise that
the smaller stations lack.

Yes by simply Expanding the FM Radio Band and
requiring all the new FM Radio Stations to be IBOC
HD-Radio with a Cut-Off of Analog at 5 Years would
hasten the migration of Radio Listeners to HD-Radio
on the FM Band.

Use the New FM Channels to migrate many of the
Smaller and Lower Powered AM Radio Stations to
the Expanded FM Radio Band. {Depopulate the AM
Radio Band}.

I will repeat myself -presently- The driving force in
modifying Radio Listener Behavior is their Car/Truck
When the number of Cars/Trucks on-the-road with
IBOC HD-Radio is around 90% IBOC will be de-facto
Adopted by the Radio Listeners in their Car/Trucks.
That will take a Decade or more. Each of those new
IBOC AM & FM HD-Radio Listeners will eventually
buy a new HD-Radio for their Home and/or Office.
Yes is a Decade Long View to gently transition
to HD-Radio; by gradually expanding it's 'presence'.