"David" wrote in message
news
Thanks to Bob Gonsett

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

Thanks for the link.

That spectrum is consistant with what I heard a few evenings ago around
720 kHz. WGN's engineer said it wasn't them, and I haven't noticed the
noise since then.

Has anyone heard the sidebands produced by IBOC? The best description I
can come up with is something like "digital white noise".

Frank Dresser