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describes the design and construction of a 4 GHz amateur radio telescope dedicated to SETI.
http://www.bambi.net/
contains extensive documentation on the Optical Search for Extraterrestrial Intelligence (OSETI) and the activities of the observatory.
http://www.coseti.org/
also known as the Big Ear Radio Observatory. Kraus-type radio telescope famous for the 'Wow!' Signal and for the longest-running SETI project.
http://www.bigear.org/
see where project BETA is searching right now, learn about META II and SERENDIP, and discover new, exciting SETI programs.
http://seti.planetary.org/
the Australian division of a world-wide experiment carried out by a number of independent groups. Includes news and articles.
http://seti.uws.edu.au/
engaged in scientific and educational projects relevant to the nature, distribution, and prevalence of life in the universe.
http://www.seti.org/
grass-roots, nonprofit, member-supported organization devoted to the Search for Extraterrestrial Intelligence.
http://www.setileague.org/
a serious attempt to build the machinery, electronics, and logic necessary to detect an electromagnetic extraterrestrial signal.
http://www.seti.net/
sign up to become part of the SETI Institute's unique work: the high-tech investigation of the cosmos for signals from other civilizations.
http://www.teamseti.org/