Can one of you tell me how to enable Airport to use channel 12 and 13 on a MBP from the US? My WLAN operates on channel 12 at home (which is perfectly fine in my country). I'd switch to a different channel if it wasn't for all the other WLANs in the proximity. There is no option in the preferences menu, but it should be possible to switch this behavior in software. It's not like they build different sets of Airport cards in China... I'm sure someone has asked this before, but I couldn't find anything.