On Oct 2, 11:22 am, wrote:
On Oct 2, 11:47 am, wrote:

ABC CITADEL AM STATIONS SUSPEND NIGHTTIME IBOC

http://www.radio-info.com/smf/index....c,82132.0.html

It's over for AM-HD - no sense in running it during the day, if it
doesn't work at night!

And I'm supposed to believe some anonymous guy without any proof (not
even a screenshot of the email).


- Truth is:
-
- Nightime IBOC would work just fine if the adjust
- they parameters to fit inside 10 kHz.

DOH ! - If the Shoe Don't Fit . . .
Don't Stick It In Your Mouth !

SFTV, { "Hybrid Digital" Man }

AM/MW "HD" Radio is 'by-design' Engineered to Interfer
with the two Adjacent AM/MW Radio Channels at 10 kHz.
http://electronicdesign.com/Files/29.../Figure_02.gif

AM {Basic} Analog Audio +/- 5 kHz
Digital Primary {Outside Audio} Side-Bands +/- 10~15 kHz
Digital Secondary {Inside Data} Side-Bands +/- 5~10 kHz

For the current IBOC Broadcast 'Scheme' to work on the
AM/MW Radio Band : The current Channel "Spacing" of
10 kHz would have to be expanded to 25 kHz. Meaning
that Half the Current AM/MW Radio Stations would have
to be 'transitioned' from the AM/MW Radio Band to the
FM Radio Band. In order to accomodate these 'new' FM
Radio Stations; the FM Radio Band would have to be
Expanded by using the former Analog TV Channels 5 & 6
{76 MHz to 88 MHz}.

1 - Serving in the Public Interest - The Clear Channel
Mega-Power AM/MW Radio Broadcaster is no longer
needed or required : Therefore the concept of Local
AM/MW Radio Stations having 1000 Watts and former
Clear Channel AM/MW Radio Stations having 50,000
Watts is clearly outdated.

2 - The 'artifical' 1% Digital to Analog Signal Ratio is
clearly not working fully within the 10 mv/m Contour
and Fails beyond it.
1000 Watts Analog ERP @ 1% = 10 Watts Digital
5000 Watts Analog ERP @ 1% = 50 Watts Digital
10,000 Watts Analog ERP @ 1% = 100 Watts Digital
20,000 Watts Analog ERP @ 1% = 200 Watts Digital
50,000 Watts Analog ERP @ 1% = 500 Watts Digital

3 - Localize All "HD" AM/MW Radio Broadcasting.
Three Classes of AM/MW "HD" Radio Broadcasters :
* Rural Local Radio Stations 100 Watts - Days and Nights
- - - Gives Local Radio Stations Ten Times (10X)
the Digital Power that they presently have.
* Metro Radio Stations 400 Watts - Days and Nights
- - - Gives Metro Area Radio Stations 2X~8X
the Digital Power that they presently have.
* Regional Radio Stations 1600 Watts Days and
800 Watts Nights
- - - Gives Regional Radio Stations 2X~3X
the Digital Power that they presently have.

FCC mandate that all new AM/FM Radios :
Made in the USA or Imported into the USA
be "HD" {IBOC} Radios by 2009.

FCC requirement that allAM/FM Radio Stations
be Broadcasting in "HD" {IBOC} Radios by 2010.

I Ask Myself : What IBOC ?
All I See Is The Blinking Blue Light ! ~ RHF
In That Distant Land* Where IBOC Fears To Go :
Life Exists and Radio Listeners Live Beyond the 10mv/m Contour.
* Twain Harte, CA -USA-