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.
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.