On Sep 2, 2:17*pm, Richard Evans
wrote:
DigitalRadioScams wrote:
On Sep 2, 4:05 pm, Richard Evans
wrote:
If they wanted to use the FM band, they may have been better off using DRM+.

Much more spectrally efficient.
Likely to provide better sound quality.
The only licensing requirement is for decoding of aac+.
Better control of which frequencies to use, hence more chance of
avoiding interference to FM services.

No one is interested in buing digital radios.

- Perhaps not. But if they are going to try
- and sell them to people, they could at least
- have tried selling then a descent system.

A $300~$450 Option on a Car is NOT a
Decent HD Radio System !?!

Yes better HD-Radios are needed . . .

=BUT= FM HD-Radio has done this with 1%
of the Analog's 100% Power; and Analog
still has 99% EFP.

What Happens : When FM HD-Radio has 10%
of the Analog's 100% Power; and Analog is
then down to 90% ?

-by- 2015~2020 most FM HD-Radio Stations
will be at 15%~20% of the former Analog 100%
and will be considering treminating the remaining
80% of the Analog Output because the Radio
Listeners will no-longer be there . . .

IBOC - iBiquity Finally Under Investigation
-ROTFL- ~ RHF
Lawsuit Most Likely Going Nowhere
http://groups.google.com/group/ba.br...b5d6149534c9ae

On Sep 2, 2:08*pm, DigitalRadioScams
wrote:
On Sep 2, 4:05*pm, Richard Evans
wrote:

If they wanted to use the FM band, they may have been better off using DRM+.

Much more spectrally efficient.
Likely to provide better sound quality.
The only licensing requirement is for decoding of aac+.
Better control of which frequencies to use, hence more chance of
avoiding interference to FM services.

- No one is interested in buing digital radios.

DigitalRadioScams are you 'buing' yourself too much ?

IBOC - iBiquity Finally Under Investigation
-ROTFL- ~ RHF
Lawsuit Most Likely Going Nowhere
http://groups.google.com/group/ba.br...b5d6149534c9ae

On Sep 2, 1:05*pm, Richard Evans
wrote:
If they wanted to use the FM band, they may have been better off using DRM+.

Much more spectrally efficient.
Likely to provide better sound quality.
The only licensing requirement is for decoding of aac+.
Better control of which frequencies to use, hence more chance of
avoiding interference to FM services.

IBOC is about 'morphing'* the existing FM Radio Band
not replacing all at once with a new Technology or
an new FM/UHF Band.

* Creating a natural Analog to Digital transition over
a Decade or two as both Radio Listeners and Radio's
in-service migrate from the old mode to the new mode.

IBOC - iBiquity Finally Under Investigation
-ROTFL- ~ RHF
Lawsuit Most Likely Going Nowhere
http://groups.google.com/group/ba.br...b5d6149534c9ae

Maybe we will eventually have DRM for AM here in the US.

IBOC on AM is a disaster.

harddisque wrote:
Maybe we will eventually have DRM for AM here in the US.

IBOC on AM is a disaster.



AM radio sounds great if you know what you're doing. The NRSC mask
needs to go away, along with every station (or night-time operation)
authorized since the late '70s.

Dancing dog is Web sensation
http://www.libertypost.org/cgi-bin/r...?ArtNum=295206

WOOF WOOF.
cuhulin

dave wrote:
harddisque wrote:
Maybe we will eventually have DRM for AM here in the US.

IBOC on AM is a disaster.



AM radio sounds great if you know what you're doing. The NRSC mask
needs to go away, along with every station (or night-time operation)
authorized since the late '70s.



You're pretty much right on.

Standard AM does have more background noise at low and moderate
signal strengths. And the extreme high end, above, say, 10 kHz, is
hard to get perfectly flat at some (but not all) directional facilities.

But with analogue AM you can transmit high-fidelity audio with no
data compression whatever (and none of its attendant artifacts) in
30 kHz of RF bandwidth. You can't do that with IBOC of either the AM
or FM varieties.

And with standard analogue AM, no de-emphasis need be used on the
receiving end, so high frequencies that are 100 per cent. modulated
come through at full level on the receiving end. You can't do that
with pre-emphasized FM.

When WEAM 1390 in Arlington ran its progressive format in the 1970s,
they used very modest amounts of optical compression and peak
limiting, and subtle equalization -- and they sounded absolutely
stunning on my McKay Dymek AM5 tuner.

With all good wishes,


Kevin, WB4AIO.
--
http://kevinalfredstrom.com/