On Tue, 09 Aug 2011 15:15:46 +0100, Jonathan de Boyne Pollard wrote:

WIWAL, the week clearly started on Saturday...

Lawyers start the week on Saturday?

all you had to do to prove it was to look at TV Guide...what's more,
each day
began at 6:00am, [...]

This is also true for non-lawyers reading TV listings.

Now (strangely given that *all* stations stay on the air round the
clock if only to air infomercials)TV Guide has decided [...]

This, however, is not true. In these days of digital television, some
stations go off the air entirely at certain times of day and their
bandwidth is taken up by other stations.

If you are talking about over-the-air TV stations in the same service
area, I'd like some specific examples of this, perhaps an FCC channel
assignment chart.

If you are referring to digital sub-channels, well, that's a different
thing, and leads to the question of how you define a "station".

Some radio stations in the US do leave the air and are replaced by other
stations on the same frequency. And some radio stations are daylight-only
stations, leaving the air at sunset. A local example is the University of
Arizona's public AM station, KUAZ-AM. It's a 25 kilowatt station, which
is quite powerful for a local station, and would interfere with other
stations on the same frequency around the country when night time skip
begins. Most of the powerful AM stations broadcast at 50 kilowatts and
are so-called "clear channel" stations so there are no other stations on
the same frequency.

--
Dave Hatunen: Free Baja Arizona