Really nifty article on Flakey.Info about turning an Apple Airport Wi-Fi base station into a multi-antenna system using a pigtail antenna and connector. The N-type connector on the pigtail can be used to mount an external antenna cable, an omni-directional antenna (shown), a “cantenna,” or a bi-quad antenna.
(Check out the nifty bi-quad, waterproofed by building it inside of a Tupperware container. I wonder how much of a sales boost Pringels and Tupperware are enjoying as a result of the community wireless movement? They’ve become staples of many a node.)