Bat Detectors
From Hackteria Wiki
http://home.earthlink.net/~bat-detector/BatDetector.html
Contents
SGMK version
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Links
Overviews
great overview: http://www.durhambats.org.uk/reviews.htm
Simple DIY BatDetectors
Arduino based Bat Detectors
Heterodyning BatScanners
Bat Communities
http://batconservationindia.org/
http://www.xn--flderms-6wa4ta.ch/unterhaltung/webcam/beggingen.html
Bat Planet UK, has many detectors from Ciels