There's not much tech info needed... if you use good radios/ants (see my post above; also, amplifiers other than those on the card are usually a bad idea) and have great LOS and no interference and you're set for hundreds of miles. You'll notice they used radio mobile to compute the signal stength; it's not entire accurate but it helps.
Well, some so-called "top shelf" stuff sucks too (think of Linksys, who uses crappy Broadcom radios in most of their equipment).
If you use good radios (Atheros, esp. the Ubiquity 400mw cards - wow), good antennas (these guys' dishes are 27dbi? Standard routers and cards are *2*dbi) and have great/incredible LOS, the distance you can go is essentially limited only by earth curvature.
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There's not much tech info needed... if you use good radios/ants (see my post above; also, amplifiers other than those on the card are usually a bad idea) and have great LOS and no interference and you're set for hundreds of miles. You'll notice they used radio mobile to compute the signal stength; it's not entire accurate but it helps.
Well, some so-called "top shelf" stuff sucks too (think of Linksys, who uses crappy Broadcom radios in most of their equipment).
If you use good radios (Atheros, esp. the Ubiquity 400mw cards - wow), good antennas (these guys' dishes are 27dbi? Standard routers and cards are *2*dbi) and have great/incredible LOS, the distance you can go is essentially limited only by earth curvature.