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Venezuelans set new WiFi distance record: 237 miles

posted ‎‎Jul 15, 2008 7:11 AM‎‎ by cuec eng


It's been a while since we've seen people muck around with long-distance WiFi -- not only are DIY solutions like cantennas possibly illegal, sexier technologies like WiMAX have emerged to better serve those long-distance IP needs. WiFi's flame burns on in Latin America, however, where researcher Ermanno Pietrosemoli has managed to shoot an 802.11 signal 382 kilometers (237 miles) between two mountains in the Venezuelan Andes. Pietrosemoli, who is president of Latin American networking association Escuela Latinoamerica de Redes, used some of Intel's long-range WiFi tech and $60 worth of Linksys hardware to achieve throughput of 3 Mbps in each direction and beat the former record of 310 kilometers (192 miles). Pietrosemoli hopes to use the tech to serve developing nations, but seeing as we barely get 3 Mbps in our WiFi-choked apartment building with the laptop sitting next to the router, we're hoping he lets us in on the secret as well.

Read - CNET Article
Read - Interview with Ermanno Pietrosemoli

source:http://www.engadget.com/2007/06/19/venezuelans-set-new-wifi-distance-record-237-miles/

125 Mile WiFi Connection

posted ‎‎Jul 15, 2008 5:51 AM‎‎ by cuec eng   [ updated ‎‎Jul 15, 2008 5:54 AM‎‎ ]

Record Holding WiFi Antenna

I know that this post seems old as this link wad made earlier on 2005, but i think that it is interesting to have live examples on how much you can extend your wifi signal without an amplifier.

A team participating in the DefCon WiFi shootout broke the world WiFi distance record, extending a connection across over 125 miles.

The incredible thing is that they were able to achieve a full 11Mbps connection over this distance, and it was unamplified!

Doubly cool: they also said they fully expect that this same rig would work at distances of over 300 miles. Considering most folks have trouble just getting a solid connection in their living rooms, that's totally insane!

At each end of the connection was a surplus satellite dish augmented with some custom welded support scaffolding. Team iFibre Redwire were so confident that everything would work, they didn't bother with a closer test-run, but instead headed directly across the Nevada state line to set up their second antenna on a hill in Utah.

If I heard correctly, they used a 3 watt amplified signal while initially aligning the dishes, but then were able to cut the power to the standard 30 milliwatt gain that a normal wifi device would have. The actual cards they used were 300mw capable Z-com pcmcia adapters.  Some sites are saying they ran the connection at 300mw, but I thought I heard them say they had reduced the gain to 30 and were still able to get a strong 11Mbps connection. I may have misunderstood.

They haven't posted additional updates to their site yet, but more details should follow soon. Until then, check out a few pictures I took of one of the dishes, and there are some maps of the site and discussion over at wifi-toys.

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