Re: Bat detector

["Steve Pelikan" pelikan45224]

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Rich: Thanks for the examples and thanks everyone for the discussion.

I've been planning to record bats for a couple of years. My wife does
bat rehab and education so in the course of a year I get to encounter
3-5 species. (And what's more, I get to have them identified ---
frequently a problem with Myotis that you can't hold in your hand.)

We have a heterodyning bat detector but there's lots of problems with
how to interpret the output. I've already accepted that  I'll eventually
need a high sample rate digital recorder.  What's been holding me up is
microphone(s). I've been torn between trying to make some out of
ultrasound detectors (something I'd not be good at) and purchasing a
microphone(s) that include most of the frequency range of interest.
Several species of interest are concentrated in  under 55 KHz. though
most Myotis in the eastern US seem to go higher.

So I'd be delighted to see MORE posts  with comments and suggestions on
how to record in the 20-65 KHz range.

Steve P

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