"Frank" wrote in message
...
On Thu, 12 Mar 2009 22:42:11 -0700, David Eduardo wrote:



HD hardly uses any electrical. A sidelight on a tower uses more than
most.

That's nice. Would profit pressed pennypinchers keep that light on if it
weren't required by the insurance company or the government?


Citadel turned of HD on a couple of AMs which were interfering at night,
WABC an WJR.


That's odd. I had the impression that IBOC interference had no
significant effect beyond the FCC protected contour.


That's what IBOC shills would have you believe, but it has been demonstrated
many times now that this is not the case, and that significant sideband
interference from the IBOC sidebands is caused via skywave at nighttime.
Please note that it takes a significantly smaller signal to cause
interference than it does to actually HEAR the signal itself. Because of
this, those IBOC sidebands can and do interfere with stations in an area
where those same sidebands would not be copyable.