I know in one area in Wisconsin did have large windmill farm area the last count I did it was over 110 or so I did not get a chance to count all of it and it not very far from my area in Wisconsin only about 80 Km or so

The max height of turbine blades if I did recall it correct it was little over 50 meters plus they have aircraft warning lights in the top of the generator / gearbox housing and all the warning lights are schyronouns so there is no differnce on the speed of lights.

Now for the noise what I heard the later models don't make much noise as early models did.

Merci,Marc

Pas de problme,il marche n'est-ce pas?"(No problem, it works doesn't it?)