naturerecordists
[Top] [All Lists]

Re: device of any use?

Subject: Re: device of any use?
From: "Walter Knapp" waltknapp
Date: Sun Feb 18, 2007 6:51 am ((PST))
Posted by: "Jim Lee"
>
> With that kind of dish you might as well try one of these little devices=

> from Wild Planet toys. I bought one just for kicks. It actually works.
> Of course it is not for serious recordists but for kids getting started,=

> it is hard to beat for the price. A tinkerer might even be able to hack
> it up to better performance. The older version of this toy from the same=

> company had a larger dish, more like Buck Rogers than James T. Kirk.
> *http://tinyurl.com/3b4dnz

No amount of tinkering will change the size of that dish. Because it's
so small it will have poor gain, and gain is why you use a parabolic.
This will be particularly noticeable in the lower frequencies where the
natural characteristics of parabolics give only a small amount of gain
even with a bigger dish.

I can record callers 300' away with plenty of gain with my SASS, which
has no parabolic dish and which I consider my close mic. But if the
caller is hundreds of yards away I often can record it fine with the
Telinga parabolic. And, with the Telinga I have recorded frogs from a
mile away. Those were truly inaudible by ear, unlike something only 300'
away.

Remember you can use up a lot of money buying endless almost good enough
stuff. Or you can put all that money together and buy one good piece of
equipment that can keep you going for a lifetime. (actually for some
they could buy a whole case of good stuff for what they spend).

BTW, my first dish mic was much larger than this one, it was a
photoflood reflector.

Walt




<Prev in Thread] Current Thread [Next in Thread>
Admin

The University of NSW School of Computer and Engineering takes no responsibility for the contents of this archive. It is purely a compilation of material sent by many people to the naturerecordists mailing list. It has not been checked for accuracy nor its content verified in any way. If you wish to get material removed from the archive or have other queries about the archive e-mail Andrew Taylor at this address: andrewt@cse.unsw.EDU.AU