IBOC : FM HD-Radio Needs More HD-2 Power !
 

On Jun 2, 9:51*pm, RHF wrote:
On Jun 2, 6:18*pm, "pocket-radio" wrote:





10-times-greater power thing aboutHD Radiois something you should pay
attention to.” There’s no actual rulemaking at FCC yet, but one’s expected
soon that would allow stations to run much high power on their various HD
channels. Plenty of receiver buyers are disappointed to discover they need
an external antenna to pick up a main HD channel, and then even if they get
a solid signal on that one, the HD-2 channel drops in and out, because
there’s no analog backup to switch to. Raising power levels would certainly
fix that – but would introduce plenty of other unforeseen choices, like
perhaps the question about buying a new transmitter and/antenna. (Not in
every case, but for some.) Looks like the industry’s voluntary conversion to
digital is about to enter a new phase – and this time it’s an issue for the
industry itself. The FCC has generally been willing to give radio operators
the technology they request, after vetting it for potential interference and
general efficacy. TV’s conversion to digital is going to happen next
February because the government wants it to. In the case of radio – it’s
laissez-faire.

Unfortunately "Laissez-Faire" {Let Do} to the FCC means
that they LET the Big Media Corporations DO : What They
Want To Do . . . The Radio Listener Be Dammed. ~ RHF

Development of the 816HD FM-IBOC Transmitterhttp://www.contelec.com/fm_white_papers.html
For FMHD-Radioadn their HD-2 Channels the Digital
Power Level is secondary to ensuring that the Digital
Signals are maintained within the HD-Signal Mask that
the FCC imposed on such transmissions.http://www.jampro.com/uploads/images...LHD/ALLHD1.jpg

Note - The FMHD-RadioScheme is 'different' from
the AMHD-RadioScheme.
.
IBOC &HD-Radio= Follow-the-Money = Bu$ine$$ & Politi¢$
*.
the truth is out-there - riding on a radio-wave ~ RHF
*.
- - - the digital divide : i draw the line @ iboc 'hd' radio- - -http://en..wikipedia.org/wiki/In-band_on-channel
*.
Find-Out-for-Yourself - Google Search Results :HD-Radio-http://www.google.com/search?hl=en&q=HD-Radio
*.
Read-the-News-for-Yourself Google News Results :HD-Radio-http://news.google.com/news?hl=en&q=HD-Radio
*.
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
CopyRight © RHF {Radio High Frequency} All Rights Reserved.
*.
Fair Use Notice : This Entire Message in Part or Entirety
may be Copied and Reposted on/in All Media : Provided
the Source the "Rec.Radio.Shortwave" Newsgroup and
the Author RHF {Radio High Frequency} are both identified.
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*.- Hide quoted text -

- Show quoted text -

"Are Elevated FM IBOC Levels a Good Fix?"

"Certainly the initiative, though not yet at the level of an official
FCC request, has its critics, who cite potential for increased
interference as well as increased implementation costs. One wrote on
an engineering listserv: The NAB has determined that they think the
increase to 10 percent will work without interference or damage to the
analog. They haven’t said they’re sure. How do you go to the FCC
without being able to document your claim? Another engineer said in an
interview that an FM power increase would result in a replay of the AM
[interference] problem.”

http://www.rwonline.com/pages/s.0049/t.12575.html

"NAB to Seek FCC Approval of Major IBOC Power Boost"

"For some broadcasters, however, the fact that the NAB has apparently
signed on to the recommendation without first revealing details of
this rather secretive study to its general membership is both striking
and troubling."

http://tinyurl.com/39foj9

"Upping HD Radio signal strengths"

"The short math given what we know today is that it will cost roughly
double on the transmission end to increase HD Radio FM power tenfold.
There are likely to be additional costs for cooling and air handling
as well, in order to dissipate the excess energy required to get out
another 10 dB in HD Radio signal. And, for some higher powered
stations, existing HD Radio configurations may not be able to handle
the power load, which could add to the cost and complexity of
increasing HD Radio beyond its current power level."

http://tinyurl.com/4yu5m6

"What Are We Doing to Ourselves, Exactly?"

"IBOC FM Interference Has Been Reported in Several Cases Where FCC
Contours Provide Inadequate Protection."

http://tinyurl.com/yt286v

"HD Interference: Not Just For AM Anymore"

"Radio World Engineering Extra dropped a bomb this month with a very
provocative cover story: 'What Are We Doing to Ourselves, Exactly?'
Written by Doug Vernier, the man who authored the technical
specifications for an ongoing Corporation for Public Broadcasting-
sponsored HD Radio interference analysis, the report is the first of
its kind to document interference between FM-HD stations around the
country. Using anecdotal reportage, some sophisticated contour-
mapping, and presumably 'early data' from the CPB study, Vernier's
article conclusively proves how stations running in hybrid HD/analog
mode can (and do) interfere somewhat significantly with not only
themselves, but their neighbors on the FM dial."

http://diymedia.net/archive/1207.htm#122307

Good-luck with raising the power.

IBOC : FM HD-Radio Needs More HD-2 Power !
 

Pogo: We Have Met the Enemy and He Is Us.

IBOC : FM HD-Radio Needs More HD-2 Power !
 

On Jun 3, 7:38*pm, "pocket-radio" wrote:

- Pogo: We Have Met the Enemy and He Is Us.

little pocket-radio,

D'OhGo ! - We Have Met the FCC and We Own Them !
-so says- Very B I G Corporate Media Ownership

The 'concept' behind small media ownership and limited
media markets was that no one media corpoation could
exercise control over all members of the US Congress :
Now with Very B I G Corporate Media Ownership a
company like Clear Channel Corp has Total Control
over the US Congress and thus : What Clear Channel
Corp Wants The FCC Does.

in reality the us congress sucks ~ RHF
.
IBOC & HD-Radio = Follow-the-Money = Bu$ine$$ & Politi¢$

IBOC : FM HD-Radio Needs More HD-2 Power !
 

On Jun 3, 5:35*am, gallant17 wrote:
On Jun 2, 9:51*pm, RHF wrote:





On Jun 2, 6:18*pm, "pocket-radio" wrote:

10-times-greater power thing aboutHD Radiois something you should pay
attention to.” There’s no actual rulemaking at FCC yet, but one’s expected
soon that would allow stations to run much high power on their various HD
channels. Plenty of receiver buyers are disappointed to discover they need
an external antenna to pick up a main HD channel, and then even if they get
a solid signal on that one, the HD-2 channel drops in and out, because
there’s no analog backup to switch to. Raising power levels would certainly
fix that – but would introduce plenty of other unforeseen choices, like
perhaps the question about buying a new transmitter and/antenna. (Not in
every case, but for some.) Looks like the industry’s voluntary conversion to
digital is about to enter a new phase – and this time it’s an issue for the
industry itself. The FCC has generally been willing to give radio operators
the technology they request, after vetting it for potential interference and
general efficacy. TV’s conversion to digital is going to happen next
February because the government wants it to. In the case of radio – it’s
laissez-faire.

Unfortunately "Laissez-Faire" {Let Do} to the FCC means
that they LET the Big Media Corporations DO : What They
Want To Do . . . The Radio Listener Be Dammed. ~ RHF

Development of the 816HD FM-IBOC Transmitterhttp://www.contelec.com/fm_white_papers.html
For FMHD-Radioadn their HD-2 Channels the Digital
Power Level is secondary to ensuring that the Digital
Signals are maintained within the HD-Signal Mask that
the FCC imposed on such transmissions.http://www.jampro.com/uploads/images...LHD/ALLHD1.jpg

Note - The FMHD-RadioScheme is 'different' from
the AMHD-RadioScheme.
.
IBOC &HD-Radio= Follow-the-Money = Bu$ine$$ & Politi¢$
*.
the truth is out-there - riding on a radio-wave ~ RHF
*.
- - - the digital divide : i draw the line @ iboc 'hd' radio- - -http://en.wikipedia.org/wiki/In-band_on-channel
*.
Find-Out-for-Yourself - Google Search Results :HD-Radio-http://www.google.com/search?hl=en&q=HD-Radio
*.
Read-the-News-for-Yourself Google News Results :HD-Radio-http://news.google.com/news?hl=en&q=HD-Radio
*.
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
CopyRight © RHF {Radio High Frequency} All Rights Reserved.
*.
Fair Use Notice : This Entire Message in Part or Entirety
may be Copied and Reposted on/in All Media : Provided
the Source the "Rec.Radio.Shortwave" Newsgroup and
the Author RHF {Radio High Frequency} are both identified.
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
*.- Hide quoted text -

- Show quoted text -

"Are Elevated FM IBOC Levels a Good Fix?"

"Certainly the initiative, though not yet at the level of an official
FCC request, has its critics, who cite potential for increased
interference as well as increased implementation costs. One wrote on
an engineering listserv: The NAB has determined that they think the
increase to 10 percent will work without interference or damage to the
analog. They haven’t said they’re sure. How do you go to the FCC
without being able to document your claim? Another engineer said in an
interview that an FM power increase would result in a replay of the AM
[interference] problem.”

http://www.rwonline.com/pages/s.0049/t.12575.html

"NAB to Seek FCC Approval of Major IBOC Power Boost"

"For some broadcasters, however, the fact that the NAB has apparently
signed on to the recommendation without first revealing details of
this rather secretive study to its general membership is both striking
and troubling."

http://tinyurl.com/39foj9

"Upping HD Radio signal strengths"

"The short math given what we know today is that it will cost roughly
double on the transmission end to increase HD Radio FM power tenfold.
There are likely to be additional costs for cooling and air handling
as well, in order to dissipate the excess energy required to get out
another 10 dB in HD Radio signal. And, for some higher powered
stations, existing HD Radio configurations may not be able to handle
the power load, which could add to the cost and complexity of
increasing HD Radio beyond its current power level."

http://tinyurl.com/4yu5m6

"What Are We Doing to Ourselves, Exactly?"

"IBOC FM Interference Has Been Reported in Several Cases Where FCC
Contours Provide Inadequate Protection."

http://tinyurl.com/yt286v

"HD Interference: Not Just For AM Anymore"

"Radio World Engineering Extra dropped a bomb this month with a very
provocative cover story: 'What Are We Doing to Ourselves, Exactly?'
Written by Doug Vernier, the man who authored the technical
specifications for an ongoing Corporation for Public Broadcasting-
sponsored HD Radio interference analysis, the report is the first of
its kind to document interference between FM-HD stations around the
country. Using anecdotal reportage, some sophisticated contour-
mapping, and presumably 'early data' from the CPB study, Vernier's
article conclusively proves how stations running in hybrid HD/analog
mode can (and do) interfere somewhat significantly with not only
themselves, but their neighbors on the FM dial."

http://diymedia.net/archive/1207.htm#122307

- Good-luck with raising the power.

G17,

That is why the 'logical step' from 1% of the Analog ERP
is 4% not 10% and Testing for Full Technical Compliance
to the FCC's Mandated FM HD-Radio Signal Mask that
the FCC imposed on such transmissions.
http://www.jampro.com/uploads/images...LHD/ALLHD1.jpg

One Year of Operation and Monitoring of HD-2 Channels
at 4% without Technical Violations or Public Complaints;
followed by a step-up to 10% with One Year {Year # 2}
of Operation and Monitoring of HD-2 Channels at 4%
without Technical Violations or Public Complaints.

During Year # 2 the Primary FM HD-Radio Signal could
be stepped-up-to 4% of the Analog ERP with One Year
of Operation and Monitoring of Primary FM HD-Radio
Signal without Technical Violations or Public Complaints.

Yes Indeed - Good Luck Raising the Power
in Full Technical Compliance [.]

idtars ~ RHF