====== Bats! ======

===== Information about the Austin bats =====
  * [[http://www.batcon.org/index.php/get-involved/visit-a-bat-location/congress-avenue-bridge.html|Overview of Congress Bridge]]
  * [[http://www.batcon.org/index.php/get-involved/visit-a-bat-location/congress-avenue-bridge/subcategory/51.html|When and where to watch the bats]]
  * [[http://austin.about.com/od/austinattractions/p/Bats_in_Austin.htm|Schedule and hotline info]]
  * 

===== Bats and ultrasound =====
  * [[http://hyperphysics.phy-astr.gsu.edu/hbase/sound/usound.html#c2|Bats use ultrasonics to navigate]]
  * [[http://binaryacoustictech.com/batpages_files/Recording.htm|Mexican free-tailed bat ultrasonic recordings and information]]

===== Equipment =====
  * Bat detectors @ Wikipedia - http://en.wikipedia.org/wiki/Bat_detector
  * [[http://binaryacoustictech.com/batpages_files/ar125.htm|Really freaking expensive ultrasonic recorder]] - $1085
    * 1khz to 125khz
    * "90dB dynamic range"
    * usb 2.0
    * camera mount
    * Specs: http://binaryacoustictech.com/Web%20design%202/3%20Downloads/Doc/AR125%20Product%20Specification.pdf
  * Cheaper one - http://www.econvergence.net/faqdet.htm - $65
    * 20 - 100 kHz
  * http://www.bugspray.com/catalog/bats/bat11.html $100
  * http://pw1.netcom.com/~t-rex/BatDetector.html
    * Bre made this for a weekend project - http://blog.makezine.com/archive/2006/09/make_podcast_weekend_proj_6.html
  * More bat detector info and links: http://bertrik.sikken.nl/bat/index.html

Ultrasonic transducers
  * http://www.acroname.com/robotics/parts/R134-600.html
  * SensComp 600 series electrostatic transducer (the Polaroid one) - http://www.acroname.com/robotics/parts/R13-INST.html
    * http://www.senscomp.com/specs/600%20instrument%20spec.pdf
  * http://www.acroname.com/robotics/parts/R12-7000.html