In article , gatt
wrote:

Anybody ever seen intermittent ILS localizer reception during multiple
missed approaches?
What causes that?

Not sure about the localizer, but glideslope can be affected. I will
have to pull out my copy of TERPS to check.
Was there an aircraft parked somewhere in the runway environment
(beyond the hold-short line) between you and the the ILS antennas?
The glideslope signal is reflected off the flat ground between the
antenna and the runway threshhold. Hold-short lines on the taxiways are
placed far enough back from the runway that an aircraft in the runup
area will not interfer with the glideslope signal.