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email thisCringely posted a rather far-fetched article last week about setting up his own multi-mile wireless relay which naturally made some of the network community very interested in finding out if or how he really did it. There's a great group of folks out there hacking pringles and coffee cans, Apple Airports, and Lucent wireless PCMCIA cards on their Win/Linux/Macs to squeeze out more range via better antenna and configuration tools.
Albert Einstien once explained radio:
"You see, wire telegraph is a kind of a very, very long cat. You pull his tail in New York and his head is meowing in Los Angeles. Do you understand this? And radio operates exactly the same way: you send signals here, they receive them there. The only difference is that there is no cat."