(meteorobs) Radio Listening..

[mark ford]

Thanks Andy that is interesting

I once 'heard' a Perseid, sounded like a fast hiss, at the time, I
thought I had imagined it, but others have clearly heard them too., the
VLF component would explain it, as they point out any natural transducer
would resonate at VLF, and I was very near a pine forest at the time,
and they actually mention pine needles as a possible candidate for
producing the sound(!).  Might be interesting to transmit some VLF into
quiet woodland 
and listen for the resultant audio, It's amazing playing with a VLF
receiver everything seems to emit a small amount of VLF even dripping
water!

I shall certainly give the VLF a try when the Perseids peak and report
back if I get anywhere.

Best 
Mark
(M1BSP)




-----Original Message-----
From: Andy Smith [mailto:andy-mobs at television.f9.co.uk] 
Sent: 02 August 2004 21:10
To: meteorobs at meteorobs.org
Subject: Re: (meteorobs) Radio Listening..

Hi Mark,

I've not tried receiving VLF signals from meteors, but there are some 
references on the web including this one from Nasa which is interesting:
http://science.nasa.gov/headlines/y2001/ast26nov_1.htm
It seems to imply that not much in the way of an antenna is needed. I 
suspect a long wire would be sufficient. Wolf DL4YHF has also done some 
work receiving VLF and has links to many interesting articles about it, 
though currently his website appears to be down. http://www.vlf.it/ is 
another good place to look for tips.

Good luck, and let us know how you get on!

Andy Smith
G7IZU Radio Reflection Detection Page
http://tinyurl.com/w6pv


_______________________________________________
Mailing list meteorobs
meteorobs at meteorobs.org
http://lists.meteorobs.org/mailman/listinfo/meteorobs