How-To: Build a WiFi biquad dish antenna

Wireless enthusiasts have been repurposing old satellite dishes for a while now, and with good reason… the dish helps focus the radio waves onto a directional antenna feed. These guys will show you how to build a biquad antenna feed that offers ranges of 8 miles or more. And they even mount the dish on their Subaru.
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How-To: Build a WiFi biquad dish antenna – Engadget – www.engadget.com