Another option is to use a consumer recorder like a Sony M10, etc, in MP3 m=
ode with an external battery pack to do long continuous recordings, and jus=
t throw away the bits you don't want. Depending on the bitrate, you should =
be able to get 10 days or more onto a 32GB card. I think a single pair of D=
cells should last 4 or 5 days.=0D
=0D
The challenge is to weatherproof it enough. I put mine in a clip lock box t=
hat also holds the extra batteries, and the box sits inside a cooler bag fo=
r extra protection. I use external EM-172 microphones, that don't have much=
protection other than a plastic lid held down with elastic. It's survived =
overnight downpours, but I try to avoid rain.=0D
=0D
Please let us know what you come up with, I'm interested to know about othe=
r possible solutions.=0D
=0D
Peter Shute=0D
=0D
Sent from my iPad=0D
=0D
On 20 Feb 2016, at 1:01 AM, Tom Williams <ptero=
> [naturerecordists] <<mail=
to:>> wrote:=0D
=0D
=0D
=0D
Hi Andrew,=0D
=0D
Ultrasonic versions of what you describe are used extensively for bat resea=
rch and monitoring and there are ones designed for use in the audible frequ=
ency range as well. The Wildlife Acoustics Song Meter range should be suita=
ble for the kind of work you want to do: http://www.wildlifeacoustics.com/=
=0D
=0D
They're pretty expensive though - hopefully someone else on the group may k=
now of a cheaper option!=0D
=0D
All the best,=0D
=0D
Tom=0D
=0D
On 19 February 2016 at 13:41, <=
com> [naturerecordists] <<naturereco=
>> wrote:=0D
=0D
=0D
Hi,=0D
=0D
=0D
I was wondering if the group has experience with remote sound recorders ana=
logous to camera traps that you can leave for about one month. I would want=
to record nocturnal owls, bats, hyrax, bushbabies here in East Africa. Ei=
ther one that can be triggered by sound or programmed to record a sound win=
dow of say 2 hours per day to limit battery time. Does anyone have any rec=
ommendations?=0D
=0D
=0D
Regards Andrew=0D
=0D
=0D
=0D
=0D
|