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Re: (meteorobs) amateur infrasound receiver?
Richard,
I am not sure that VLF radio receivers can
pick up meteors, but I find them interesting.
I recently bought one of McGreevey's WR-3
pocket-portable VLF radios. It is pretty slick but if
you are anywhere near power lines then all it picks
up is 60 Hz hum. When I get away from
the lines, I can hear numerous pops,
clicks and chirps. For more WR-3 info:
http://auroralchorus.com/wr3.htm
I wonder if it could be modified to
reject more 60 Hz?
BTW: I just got a note that Inspire VLF3
radio kits are now available.
http://image.gsfc.nasadot gov/poetry/inspire/
Here is the order form I got today (3/24/03)
http://www.infiltec.com/SID-GRB@home/VLF3order.pdf
I have already sent my order in.
Of course infrasound is audio and not radio.
Here are some links I have collected on it.
http://www.infiltec.com/SID-GRB@home/#infrasound
I would like to see a ~$100 kit to build an
infrasound receiver something like
http://wwwdot belljardot net/microbar.htm
Here is a professional system with some
interesting ideas
http://www.knmidot nl/~evers/infrasound/web-article/how.html
Ciao,
Dave
http://www.infiltec.com/SID-GRB@home/
http://www.infiltec.com/seismo/
----- Original Message -----
From: "Richard" <wordsmith1776@cox-internet.com>
To: <meteorobs@atmob.org>
Sent: Monday, March 24, 2003 7:44 AM
Subject: RE: (meteorobs) amateur infrasound receiver?
> Some more links re: VLF "infrasound" receivers:
>
> Stephen McGreevey's portable WR-3 VLF receiver, at
>
> http://www.auroralchorus.com/wr3.htm
>
> Listening Guide for listening to VLF "Natural" radio sounds, at
>
> http://www.auroralchorus.com/wr3gde.htm
>
> Some sound files, of McGreevey's (and others) recordings of VLF signals,
> during quiet and active geo-magnetic conditions:
>
> http://www-pw.physics.uiowadot edu/mcgreevy/#latest
>
> NASA "ISPIRE" online streaming VLF radio, with sample soundfiles:
>
>
> http://spaceweather.com/glossary/inspire.html
>
> (note: there is a Disclaimer; the INSPIRE VLF online streaming audio may
> not always be available, but the archived sound files, and
> time/frequency
> plots of "natural radio" sounds are; very educational.
>
> Richard in Lafayette, Louisiana
>
>
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