On Jan 12, 10:49*pm, Dave Barnett
wrote:
On 1/12/2012 5:26 PM, SMS wrote:

I think you're well aware of the answer. Not every FM station will be
able to use 400 Khz. Some can have only one sideband at maximum power. A
small percentage can't use either sideband. Life is rough when you're
trying to maximize spectral efficiency.

In fact a very small percentage will be able to use 400 KHz at their
assigned frequencies. *We had this discussion once before, since the
Ibiquity spec posted he

http://www.nrscstandards.org/SG/NRSC-5-B/1026sE.pdf

shows double the occupied bandwidth for a digital signal.

You said that most stations are spaced far enough from their
adjacent-channel neighbors that this wouldn't be a problem, despite
numerous examples of adjacent-channel interference right here in the Bay
Area. *The fact is that this would work somewhat in the plains of
Western Nebraska, but never in the Bay Area. *Moving just one station
has a severe domino effect. *Let me give you an example of one such
situation right here in the Bay Area:

The South Bay will soon have a full-power FM station on 93.7. *Why?

93.7 KXZM in Felton will be increasing power. *Why?

KXSM in Hollister is moving from 93.5 to 93.1 and increasing power. *Why?

KOSO in Patterson moved from 93.1 to 92.9 and decreased power. *Why?

So 93.1 KHLX in Pollock Pines could move their transmitter closer to
Sacramento.

How did Pollock Pines get a radio station? *Somebody bought a radio
station in Susanville and moved it to Pollock Pines.

This is just one example of how tightly sandwiched signals are
throughout the US. *A transaction in Susanville has an effect on the Bay
Area.

- Spacing is already so close that adjacent-channel
- HD interference is very obvious to those who know
- what it is.

NAH - To the average Radio Listener the simply will
continue to listen to their Favorite 'Local' Radio Station.
To the 99% : Radio Listening It's About Your 'Station*'
not the entire Radio Band.

* Maybe 1~2~3 Favorite 'Local' Radio Stations.

- Those who don't know the difference between regular
- static and digital noise just turn off their radio.

NAH - They will continue to listen to their Favorite
'Local' Radio Station. -again- To the 99% : Radio
Listening It's About Your 'Station*' not the entire
Radio Band.

-*That is why those of us who care about the real
- future of broadcasting and know how to use a
- spectrum analyzer would like to see the Ibiquity
- scheme just go away and be replaced with a truly
- viable digital radio medium.
-
- Dave B.

"spectrum analyzer" ROTFL clearly you are one of
the 1%ers; and thus are NOT worthy of consideration
when it comes to the Income Stream, Broadcast
Revenue and Expenditures related to the operation
of one (1) Radio Station as a 'Local' Business Enterprise
versus Managing the Entire Radio Band for a Metro
Area.

As always this is RHF and...
I'll leave the Radio 'On' ~ RHF
www.youtube.com/watch?v=g1jpxlEPHX8
-ps-:-turn-your-radio-'on'-&-just-listen-)-