Make 2.4GHz parabolic mesh dishes from cheap but sturdy Chinese cookware scoops & a USB WiFi adaptor ! Note -the phrase "Poor Man" is not usually considered insulting, but indicates (possibly with a degree of DIY pride) a desire to "make it do, use it up, wear it out" while laterally solving a problem. New Zealand Kiwi's are champions of such #8 wire ingenuity,with electric fences a typical appropriate technology example. Guess our project even has East meets West cross cultural aspects- in the style of Kiwi Fruit evolving from Chinese Gooseberries !? Lab note jottings below pix rather blog style,but arose during an educational WiFi workout & are intended to stimulate others into similar DIY investigation. The author- who first wrangled antenna as a radio ham in the 1960s- is a career educator with a flair for innovation,& has had extensive hands on DIY WiFi experiences - www.manuka.orcon.net.nz has insights into "his" Sardine Can Biquad antenna.
The largest (300mm diam)shows 15-18dB gain (enough for a LOS range extension to 3-5km), costs ~US$5 &
comes with a user friendly bamboo handle that suits WLAN fieldwork- if you can handle the curious stares!
Read more at: http://www.usbwifi.orcon.net.nz/
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