"Telamon" wrote in message
...
In article .com,
wrote:
Billy Smith wrote:
wrote in message
Interesting that the daytime signal can be heard, but no nighttime
signal - anyway, I emailed the article to WABC, not that it
matters
Daytime can be heard because the sun limits propagation to 100
miles. But during the nighttime, then all the various stations from
~1000 miles away start overlapping one another.
Well, that's all very interesting Mr. Digital engineer so how come I can
hear stations much further away than 100 miles in the daytime then?
So much for the Clear Channel concept which would be very useful in the
case
of REAL NATIONAL EMERGENCY. Considering that most of the AM
superstations
can cover at least half the country if not more, I wonder what they
will do
if TSHTF.
Most television cable are buried under the ground. Thus they are
protected, and they will continue operating, and people will watch CNN
or FOX News or MSNBC.
Well, that's all very interesting Mr. Digital engineer so how come some
TV signals are received over the air first or received from a satellite
first.
That, plus though the cable (or often, fiber optics) is underground in many
(not all by a LONG ways, mostly only in downtown and newer suburban locales
that already have buried utilities), the headend equipment is not.. nor is
said equipment, in most cases, backed up by generator. This is because if
the headend power goes down, it's most likely that the power grid in the
area of the headend is ALSO down, so the signal doesn't make it beyond the
headend..
Most americans wouldn't even think to get the old AM radio out (if
they even have an AM radio... my latest Ipod is FM only).
I guess he doesn't realize that MOST AMERICANS are not youngsters.. there
are a lot of us boomers around, and as of right now, we're still the largest
segment of the population, and will be for some time yet, since only the
fringe of us are starting to die off now, and we have a while to go (Korean
War boomers are only now getting into their mid-50's).