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From: "Alan Melia" <alan.melia@btinternet.com>
To: <rsgb_lf_group@blacksheep.org>
References: <626551.33117.qm@web63607.mail.re1.yahoo.com>
Date: Mon, 16 Nov 2009 20:21:20 -0000
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Subject: LF: Re: LEONIDS and propagation
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Hi Andy observations over several months by some of the VLF group suggest
that whilst there are some radio effects from meteors at low frequencies
they are very weak and difficult to be sure of. In general there is no known
mechanism for extensive ionisation which can be detected at LF.......however
that doesnt say you shouldn't listen for it !!.....just dont be surprised if
it is a bit "underwhelming" :-))

The best bet for observing effects are are reflections between 20 and
150Mhz. In Europe, the Graves satellite radar on 140.050 is a good way to
watch pings with something like Argo or Spectrum Lab. I guess you could then
try to correlate those with LF effects. See a recent paper on Renato's web
site  www.vlf.it

Alan G3NYK

----- Original Message -----
From: "Andy - KU4XR" <ku4xr@yahoo.com>
To: <lowfer@mailman.qth.net>; <rsgb_lf_group@blacksheep.org>; "Part-15
Yahoo" <part15@yahoogroups.com>; "600 meter group"
<SHMRG@piobaire.mines.uidaho.edu>
Sent: Monday, November 16, 2009 5:29 PM
Subject: LF: LEONIDS and propagation


> *******  Quoting from SPACE.com  *******
>
>
> Circle Nov. 17 on your calendar, for early that morning a moderate to
possibly very strong showing of annual Leonid meteor shower is likely.
>
> The very strong display will favor those living across most of central and
eastern Asia.  In this region, meteor rates might briefly rise to a few
hundred per hour (the time frame for the most intense activity is
anticipated sometime around 21:40 GMT).
>
> A far more modest, but still potentially enjoyable display of a few dozen
Leonid meteors per hour is expected to favor North America. In the United
States and Canada, eastern observers will be particularly well-positioned
for maximum activity, expected sometime between 3:30 and 5:30 a.m. EST, when
the radiant of the Leonid shower will be well up in the dark southeastern
sky.
>
> Hello all:
>
> Probable " D " and " E " layer ionization during meteor shower peak.
> interesting propagation could take place at MF anf LF. The effectes will
be seen into the VLF regions for those who monitor utility stations.
> This would be a good opportunity for GRABBERS to be online if possible,
and for WSPR stations to transmit, the WSPR spot database will show the
results of any out of the ordinary propagational enhancements, as well as
the GRABBERS.
> QRSS signals will show the effects of the ionization trails in various
> regions as they show up on various grabbers, or by direct captures of
> a signal.
> WSPR and WOLF modes will possibly show any changes in signals thru
> the received data at the monitoring station.
> Sporadic enhancement and reception of NDB's may be noticable.
>
> Good luck to all those who will be trying the PING mode, may you have
> lots of QSO's.
>
> 73 all ::::
>
>
>
> Andy - KU4XR - EM75xr - Friendsville, TN.
> LOWfer Beacon " XR " @ 185.29866 KHz ( QRSS-60 )
> Coordinates:  N:  35* 43' 54" - W:  84* 3' 16"
> http://www.myspace.com/beaconxr
>
>
>
>