Wi-Fi range issue with new MBA 13 and Netgear WNR 2200 router
My problem was that I've tried to improve performance switching from 54mb and WPA to 150-300 and WPA2.

Struggled with problems around 6 months and could not get back as messed with couple of configuration params.

Finally found that WPA2 does not affect to issues at all but speed need to be 54mb.

Now I've got lower speed, hope this won't affect skype calls (but it worked well with youtube (10xxp).