"Newps" wrote in message
...

Irrelavant. The radar computer has software that will not show any target
within the user specified distance from the radar antenna. We set ours to
1 mile. There are also altitude filters that can be set.

Facilities that do radar approaches don't tend to filter out these targets.



There is no good reason to ever turn your transponder off or to STBY
unless ATC asks you to or you somehow know it's not working properly.


ASR on the field is good reason to turn your transponder off or to STBY
without ATC request.