"Newps" wrote in message ...


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.

Of course, the localizer is off the end of the runway. The glideslope is in the
vicinity of the touchdown zone. Since they don't last too long if they stick then
in the touchdown zone, you've got at least two possibilities for siting (one on each
side of the runway).