Bat detectors

[James Coplin]

I've built several bat detectors.  I like sitting out at night and
listening to them hunt as they buzz by.  The circuit itself is fairly easy
to make and parts are not expensive - far less to make than to purchase a
commercially available one.  The ones I've been making are these:

http://pw1.netcom.com/~t-rex/BatDetector.html

He is in the US but has links of who to purchase the PCB from in the UK
and Europe.

James R. Coplin

> -----Original Message-----
> From: music-bar-bounces at lists.music-bar.org [mailto:music-bar-
> bounces at lists.music-bar.org] On Behalf Of Jay Vaughan
> Sent: Friday, August 05, 2011 3:59 AM
> To: Music-bar
> Subject: Re: Bat detectors
>
> My only question is: why?
>
> j.
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