"Newps" wrote in message =
...
=20
"Matt Whiting" wrote in message
...

I suspect it has to do with the location of the antenna. I don't =
they
they are all located in exactly the same spot WRT to the runway.
=20
The glideslopes are as they are all positioned to bring you to the =
same spot
on every runway. The localizer is sited so it is a certain width at =
the
approach end of the runway, therefore they will move the localizer =
antenna
closer to or farther away from the departure end of the runway to =
achieve
that.
=20

By far the most impressive localizer antenna I've ever seen
is on the top of Aspen Mountain, aimed out across the Pitkin County =
Airport
and the valley beyond to the northwest.
It's an array of, I think, sixteen rugged Yagis over an expanded-metal =
screen.
However, I doubt that localizer course width at any threshold was a =
factor
in the design of this particular installation. It's for missed =
approaches only.
---JRC---