This information is mostly taken from information posted by SamChurchill on the MailingList. I thought it was interesting and so I posted it here where it will hopefully be added to in the future. The idea is that instead of building a tower (which is fairly expensive) you could suspend an antenna, and possibly an access point, inside or beneath a weather balloon filled with helium.
http://www.spacedata.net/Our_Company/manned_launch.jpg http://news.bbc.co.uk/media/images/35958000/jpg/_35958981_airship300.jpg http://www.insitugroup.net/Images/aerosondeOverCar.jpg
