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Will do Jon and thanks David Bartsch > Date: Fri, 19 Feb 2010 13:12:32 -0500 > From: jonw@psubs.org > To: personal_submersibles@psubs.org > Subject: Re: [PSUBS-MAILIST] Passive sonar research > > > David, > > Do an internet search for "bat detector" or "listening to bats" or use > similar wording. Somebody out there has a schematic for a home-built > bat listening device. I've seen it before but didn't keep a reference > to it. It detects the ultrasonic "pings" of bats looking for food at > night. This will save you from having to reverse engineer an existing > device. As I recall, the circuit is minimal and quite simple. > > Jon > > > > > I was able to locate a kids toy that could detect and allow the > > listening to bats. Perhaps if I took this simple device apart, I could > > modify it to detect slightly higher frequencies I so desire. > > > > > > > > > ************************************************************************ > ************************************************************************ > ************************************************************************ > The personal submersibles mailing list complies with the US Federal > CAN-SPAM Act of 2003. Your email address appears in our database > because either you, or someone you know, requested you receive messages > from our organization. > > If you want to be removed from this mailing list simply click on the > link below or send a blank email message to: > removeme-personal_submersibles@psubs.org > > Removal of your email address from this mailing list occurs by an > automated process and should be complete within five minutes of > our server receiving your request. > > PSUBS.ORG > PO Box 53 > Weare, NH 03281 > 603-529-1100 > ************************************************************************ > ************************************************************************ > ************************************************************************ > Hotmail: Powerful Free email with security by Microsoft. Get it now. |