Sometimes when I find the time, I play with wireless lan components, trying to find out how to enhance the reach of my wireless network using self-made antennas, professional antennas,

tweaking wlan-cards or modifying a router (link) to get a couple of meters more out of the network or to be able to transmit from the basement go the attic.
Using 2 modified Linksys-Routers and 2 of the cAntennas, I was able to get a wireless link over more than 1km.

But the guys at Defcon seriously overdid it this time, breaking their own world record from last year, where they achieved a 55 mile wireless link.
More than 200 km of wireless connection without amplification!

The final result was a full 11 Mbps data transfer rate over a distance of 125 miles, a new world record for an unamplified wireless networking connection.

I just love extreme technology :D

See the details at wifi-shootout and for details go to the blog of the team at http://pasadena.net/shootout05/