Why is iBiquity's IBOC Broadcast Technology So Evil ? - Please Enlighten Me !

[~ RHF]

Why is iBiquity's IBOC Broadcast Technology So Evil ? - Please
Enlighten Me !

On Jan 23, 2:52 pm, "tom k in L.A." <toma...@gmail.com> wrote:
-
- Please enlighten me: Why is IBOC so Evil?
-

Tom K in LA,

Here is an Image of an AM {IBOC} "HD" Radio Signal
that is being Broadcast on 830 kHz.

http://earthsignals.com/add_CGC/KMXE.PDF

Notice the two HD Side Bands that extend-out on both
sides from 815~820 kHz and 840~845 kHz.

The 'lower' 815~820 kHz HD Side Band interfers
with the AM Radio Station on 820 kHz.

The 'high' 840~845 kHz HD Side Band interfers
with the AM Radio Station on 840 kHz.

The Simple {Apparent} and Scientific {Actual} Fact Is :
That IBOC Trashes the AM/MW Radio Band [.]
-Note- [.] Means PERIOD Final and Absolute.

WHY - AM/MW "HD" {IBOC} Radio is 'by-design' Engineered
to provide a Pair of {Left and Right} Primary Digital Side-Bands
and that these Two Side-Band can be used to produce "Stereo"
sound from a "HD" Radio that has a Two-Channel Audio Amplifier
and a Pair of Speakers.
http://electronicdesign.com/Files/29/12194/Figure_02.gif

IBOC's BUILT-IN INTERFERENCE :
All of the IBOC planning is done based on the IDEA that in
the vast majority of Metro Areas where the AM/MW Band
is crowded there is 20 kHz to 30 kHz or more between the
'local' AM/MW Radio Stations and that the 'other' AM/MW
Radio Stations that can be heard in the Metro Area serve
'other' Areas an thus are NOT in the 'local' 10 mv/m Service
Contour for the Radio Stations serving the Metro Area.

LEGALLY - The IBOC Side-Band Interference by FCC
Technical Standards : IS NOT INTERFERENCE [.]

NEW AM/MW RADIO LISTENERS :
For the Next Generation of AM/MW Radio Listeners
Digital Stereo "HD" AM/MW Radio using iBiquity's
IBOC Technology will be what they grow-up with and
Enjoy when making the 'Choice' to Listening to "Local"
AM/MW Radio in Stereo.

OLD AM/MW RADIO LISTENERS :
For the Pasting Generation of AM/MW Radio Listeners
Analog Mono AM/MW Radio using the 'old' stantard
Amplitude Modulation (AM) Technology will with time be
a thing of the past; and they will no longer be able to
Enjoy Listening to "Distant" (DX) on the AM/MW Radio.

WARNING - AM/MW DX'er Fear that iBiquity's IBOC Broadcast
Technology : Will Virtually Destroy All AM/MW DX'ing at Night.

A SECOND LOOK AT : iBiquity's IBOC {Hybrid Mode}
Broadcast Signal Mask/Scheme for AM/MW "HD" Radio
http://www.dallas.net/~jvpoll/rfi/AM620_KMKI/AM_IBOC_Mask10.gif
- Lower Digital Sidebands {Co-SideBand}
* Analog Host Signal (Mono) {Nested}
+ Upper Digital Sidebands {Co-SideBand}
-Note- The IBOC Signa supports the current AM Mono Signal
as well as the Digital {IBOC} Signal. Provides for 40 kbps Data
Rate, for Full Stereo plus a Low Speed Data Path. Audio 36 kbps,
Song Title and Artist 4 kbps .
http://www.rthk.org.hk/about/digitalbroadcasting/DSBS/ABU_AIR_2003/ses1_files/frame.htm#slide0143.htm

BY-DESIGN - iBiquity's IBOC Technology has the Analog
"AM" Signal that is 'Nested' {On-Channel} in-between the
Two Outer {Off-Channel} Digital Side-Bands
http://groups.google.com/group/rec.audio.tech/msg/8b2cd430f2f46f48
This Scheme creates Off-Channel Noise and Interference
to the Adjacent Lower and Upper AM/MW Radio Channels.

READ - AM/MW "HD" Radio is 'Stereo'
http://groups.google.com/group/rec.radio.shortwave/msg/0038a1877fe2785a


hy dee ray dee oh ~ RHF
Hello and Welcome to the "HD Radio" NewsGroup
HD RADIO => http://groups.google.com/group/hd-radio/
.

[IBOCcrock]

On Jan 23, 10:20 pm, "~ RHF" <rhf-newsgro...@pacbell.net> wrote:
> Why is iBiquity's IBOC Broadcast Technology So Evil ? - Please
> Enlighten Me !
>
> On Jan 23, 2:52 pm, "tom k in L.A." <toma...@gmail.com> wrote:
> -
> - Please enlighten me: Why is IBOC so Evil?
> -
>
> Tom K in LA,
>
> Here is an Image of an AM {IBOC} "HD" Radio Signal
> that is being Broadcast on 830 kHz.
>
> http://earthsignals.com/add_CGC/KMXE.PDF
>
> Notice the two HD Side Bands that extend-out on both
> sides from 815~820 kHz and 840~845 kHz.
>
> The 'lower' 815~820 kHz HD Side Band interfers
> with the AM Radio Station on 820 kHz.
>
> The 'high' 840~845 kHz HD Side Band interfers
> with the AM Radio Station on 840 kHz.
>
> The Simple {Apparent} and Scientific {Actual} Fact Is :
> That IBOC Trashes the AM/MW Radio Band [.]
> -Note- [.] Means PERIOD Final and Absolute.
>
> WHY - AM/MW "HD" {IBOC} Radio is 'by-design' Engineered
> to provide a Pair of {Left and Right} Primary Digital Side-Bands
> and that these Two Side-Band can be used to produce "Stereo"
> sound from a "HD" Radio that has a Two-Channel Audio Amplifier

> and a Pair of Speakers.http://electronicdesign.com/Files/29/12194/Figure_02.gif

> Broadcast Signal Mask/Scheme for AM/MW "HD" Radiohttp://www.dallas.net/~jvpoll/rfi/AM620_KMKI/AM_IBOC_Mask10.gif

> - Lower Digital Sidebands {Co-SideBand}
> * Analog Host Signal (Mono) {Nested}
> + Upper Digital Sidebands {Co-SideBand}
> -Note- The IBOC Signa supports the current AM Mono Signal
> as well as the Digital {IBOC} Signal. Provides for 40 kbps Data
> Rate, for Full Stereo plus a Low Speed Data Path. Audio 36 kbps,

> Song Title and Artist 4 kbps .http://www.rthk.org.hk/about/digitalbroadcasting/DSBS/ABU_AIR_2003/se...

>
> BY-DESIGN - iBiquity's IBOC Technology has the Analog
> "AM" Signal that is 'Nested' {On-Channel} in-between the

> Two Outer {Off-Channel} Digital Side-Bandshttp://groups.google.com/group/rec.audio.tech/msg/8b2cd430f2f46f48

> This Scheme creates Off-Channel Noise and Interference
> to the Adjacent Lower and Upper AM/MW Radio Channels.
>
> READ - AM/MW "HD" Radio is 'Stereo'http://groups.google.com/group/rec.radio.shortwave/msg/0038a1877fe2785a
>
> hy dee ray dee oh ~ RHF
> Hello and Welcome to the "HD Radio" NewsGroup
> HD RADIO =>http://groups.google.com/group/hd-radio/
> .

"Left in the dark"

"Local ratings show that plenty of Pocono listeners tune in to AM 770.
But about two weeks ago, WABC radio became impossible to hear in the
Poconos after sundown. And although the daytime signal is still
strong, WABC it is not likely to he heard here in the dark again. What
happened. An advancement in broadcast technology. WABC flipped the
switch for HD Radio. Something many stations are doing with, so far,
little notice from the public."

http://tinyurl.com/282tnj

"Night of the Bees"

"Radio listeners across America are trying to hide from a monster, but
there is no shelter. After spending its adolescence in technical
trials during daytime hours, IBOC has now come out at night... For
example, in New York City, WOR broadcasts on 710 kilohertz. When it
turns on its IBOC equipment, the digital noise it produces can be
heard on 690, 700, 720 and 730 kilohertz with a reduced fidelity
analog audio signal remaining on 710..."

http://karlzuk.blogspot.com/2007/09/night-of-bees.html

"AM HD Radio 24 x7 as of September 14, 2007"

"The HD Radio Interference, we will coin it HDRI, is characterized as
a loud obnoxious frying egg noise on top of an AM radio station's
analog signal. Here at PopularWireless HQ the kitchen is open and the
eggs are cooking big time. A favorite here has been New York's famous
WABC where many enjoy listening to Coast-to-Coast AM in the early
mornings. WABC is now plagued by HDRI making listening impossible at
times. Across the AM dial the analog receiver is sizzling away."

http://www.popularwireless.com/blog1/2007/09/22/hd-radio-24-x7-as-of-september-14-2007/