A repost, the original degenerated into a reasonably amusing series of observations about some members of the community's attachment for the musical form known as 'doof doof' and a likely link to this installation. Please put any more posts along those lines where that thread now is: Jetblast. Flying Spike's post almost made me cack myself, circle work indeed...
http://www.pprune.org/forums/showthread.php?t=326610
These appeared a while ago alongside the Sunbury road, well short of the 16 threshold at Melbourne. They appear to have been lashed up out of marine ply, foam plastic and tek screws in a very temporary/improvised fashion and each have a line of pa-type speakers inside. The equipment hut has what looks like a rack of routers and a couple of pc and a radio link.
I figured they are some sort of bird frighteners. Other submissions:
Ultimate Fallback communications: "Not here Speedbirdxxx, over THERE!"
Ground based active noise reduction,
any other ideas?
http://i186.photobucket.com/albums/x...03-08_1356.jpg
http://i186.photobucket.com/albums/x...03-08_1357.jpg
http://i186.photobucket.com/albums/x...03-08_1358.jpg
ps. One poster chided me for breaching security by placing these details in a forum open to birds - please cover your budgie's cage while reading this.