In article k.net, "Steven
P. McNicoll" writes:

It seems to me that any ILS antenna that can be passed by an aircraft on
a taxiway would be prone to interference.


And if it can't be passed by an aircraft on a taxiway it isn't a problem.
If access to the runway is from just one side and the glideslope transmitter
is on the far side of the runway it can't be passed by an aircraft on a
taxiway. That's the situation you find at most uncontrolled fields.


A story why you need a safety pilot. I was on a practice ILS at KLPR ( a non
towered airport) and the glide slope needle was "right on". Safety pilot said,
"Chuck, take off your hood, you are getting pretty low." We sure were, but no
glideslope flag. Advance power and as we over fly the field, we see that they
are mowing around the antenna. Now on any ILS, I like to be one mark high on
the glideslope. ILS runways are long for my Archer and it better insures that
all is OK.

Chuck