Rice University grad student Ryan Guerra is on a mission to extend the range of WiFi signals from a few hundred feet to a mile—and beyond. This month, he succeeded, thanks to some nifty engineering and a few empty TV channels.
The first beneficiary of his work is Houston resident Leticia Aguirre, 48, who lives at the very edge of a local free WiFi network run by Technology for All. The high frequencies (2.4 GHz and 5 GHz) used by WiFi mean that signals don't easily penetrate the tree branches and leaves which surrounded Aguirre's home.
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