Fred is looking for a hardware hacker to fix some problem for a free wireless infrastructure developement, any one can find a solution? Write to fred if you need further information, with a cc to me.
Nagarjuna
----- Forwarded message from Fred Pook fredpook@gmail.com -----
Date: Sat, 15 Oct 2005 13:54:33 +0200 From: Fred Pook fredpook@gmail.com Subject: electronics expert volunteer needed To: Arun Mehta arunlists@softhome.net, nagarjun@gnowledge.org
Hi Arun and Nagarjuna, How are you today? Since we are allowed to use 1 Watt RF output on the 2.4 Ghz frequency in India. And most Wi-Fi consumer products that we are using only output about 80mW, I went on a search for a low-cost RF amplifier. I found: http://www.fairchildsemi.com/news/2004/0407/rmpa2455.html chosen by broadcom (the producer of the chipset used in WRT54G and Asus) as the basis of an 2.4Ghz amplifier. So being Dutch and bold I just went on an ordered 10 of them here: http://www.digikey.com/scripts/dksearch/dksus.dll?KeywordSearch?Keywords=RMP... to my surprise they arrived with no problem. Now this IC is very small 3 X 3mm with 16 tiny surface mounting contacts and it needs some supporting capacitors etc all describe in the datasheet here: http://www.fairchildsemi.com/ds/RM/RMPA2455.pdf Do you know any electronics hackers in India who can put this together for us? And how to get these tiny little IC's to him? To have some extra RF output will make our wireless life a lot easier since we don't have to worry to much about cable and plug loss and it can keep the design of the antenna much smaller and lower-cost. Now higher output doesn't solve every problem on long range Wi-Fi connections (fresnel zone clearance is the big one) but it did wonders for the Djursland project after they got 1Watt 802.11a equipment. OK, so much for now, hope to see you soon, Fred
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