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Old February 15th 08, 09:48 PM posted to rec.radio.shortwave
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First recorded activity by RadioBanter: Jun 2006
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Default WBBM 780 IBOC back on

On Feb 15, 5:38*am, David wrote:
Bart Bailey wrote:
In

posted on Thu, 14 Feb 2008 08:36:23 -0800 (PST), ShortwaveLoonWatch LtD
wrote: Begin *


The IBOC is turned on during daylight hours. Wipes out everything 7
khz either
side of their center carrier.


I seem to remember it being more like peaks12.5kcs on either side,
guess I'll have to fire up the spectrum scope and have another looksee.


- You don't need an analyzer.
- Any AM adio will do.
- 1st and 2nd adjacents are effectively wiped-out

GRAPH-IMAGE : AM & FM "HD" Radio showing both the
http://electronicdesign.com/Files/29.../Figure_02.gif
Analog Signal and Digital Side-Bands using IBOC by iBiquity