A rather pretty plaza with a few restaurants I know has a rather intrusive noisy recording that they play each night at dusk, but as I said in my earlier post, maybe you just encourage them to move a mile or so up the approach so no big advantage, in fact possibly the opposite. All this crap about putting landing lights/ wx radar on has never seemed to me to make a blind bit of difference at known "problem airfields". What we really need is someone to invent a forward facing device that transmits on a frequency that they REALLY don't like. Problem is, there are so many different devices emitting electro -magnetic energy (and onboard mobile phone facilitators to come) that I wonder if any of us will be able to father the next generation of PPRuNers at the end of the day.