From EDN magazine Ideas for Design:
Low-cost RF sniffer finds 2.4-GHz sources.
<http://www.edn.com/article/CA6391433.html?spacedesc=designideas&industryid=44 217>
<http://www.edn.com/contents/images/6391433f1.pdf>
The input filter can be cannibalized from any Wi-Fi device with a
ceramic bandpass filter near the antenna.
--
Jeff Liebermann
jeffl@comix.santa-cruz.ca.us
150 Felker St #D
http://www.LearnByDestroying.com
Santa Cruz CA 95060
http://802.11junk.com
Skype: JeffLiebermann AE6KS 831-336-2558