Building your own BiQuad WiFi dish

Nov 15 2005 @ 01:12PM by MikeC

Want to look for that elusive wireless network in your neighborhood? Or simply just trying to leech your internet from your neighbors. This how to will let you know how to extend the range of your wireless network to up to 8 miles.

Wireless enthusiasts have been repurposing satellite dishes for a couple years now. This summer the longest link ever was established over 125 miles using old 12 foot and 10 foot satellite dishes. A dish that big is usually overkill for most people and modern mini-dishes work just as well. The dish helps focus the radio waves onto a directional antenna feed. We?re building a biquad antenna feed because it offers very good performance and is pretty forgiving when it comes to assembly errors. Follow along as we assemble the feed, attach it to a DirecTV dish and test out its performance.
Why? With just a handful of cheap parts, a salvaged DirecTV dish and a little soldering, we were able to detect access points from over 8 miles away. Using consumer WiFi gear we picked up over 18 APs in an area with only 1 house per square mile.

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AMD Introduces ?Emerald? Clustering Environment For Multi-Core Application Testing And Development

Nov 15 2005 @ 01:08PM by MikeC

SUNNYVALE, CALIF. -- November 15, 2005 --AMD (NYSE: AMD) today unveiled its Emerald cluster installation. The AMD Developer Center?s Emerald is its newest and largest system, as well as its first publicly-available cluster based entirely on Dual-Core AMD Opteron? processors with Direct Connect Architecture. AMD is offering use of Emerald to industry partners, developers, customers and end users as a cutting-edge, multi-core test and development platform.

Press Release