homebrew wifi antennae, aircrack

i found a few good links on homebrew directional wifi antennae. this one gives a comparison between different designs and shows that soup can wave guides beat pringles cans. bottom line: nalley 40oz 'big chunk' beef stew wins, with a 16 dbi gain. here's a design for a helical, also advertised at 16 dbi. maybe i could make it better by increasing the length, but if it's the same gain as the soup can, i might as well make the easier one (which costs practically nothing considering i can eat the soup). some dish designs might do even better, but that means i have to buy a usb wifi and set up network bridging with the server. either of the other two can connect directly to the wap, after i remove one of the built-ins. speaking of which, that means i'll need to pick up a RP-TNC connect at radio smack. on a related subject, here's a tutorial on using aircrack. no, i don't plan to use these together, and neither should you.