View Single Post
  #8   Report Post  
Old February 15th 08, 09:47 PM posted to rec.radio.shortwave
RHF RHF is offline
external usenet poster
 
First recorded activity by RadioBanter: Jun 2006
Posts: 8,652
Default WBBM 780 IBOC back on

On Feb 14, 9:04*am, 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.

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