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Re: (meteorobs) Radio Observation of Meteors
Philip Gebhardt wrote:
>
> Hi John,
>
> Read your message regarding the radar site in Texas being used for meteor
> detection and your query about using WWV.
>
I am still
> recovering from heart surgery and it takes a lot of effort even to read
> e-mail. So hopefully everyone will bear with me.)
Thanks for making the effort to participate, and I wish you a speedy
recovery.
>
> Yes you can use WWV. I am the leader of the Ontario DX Association's Meteor
> Detection Group and a few years back we did that experiment, but we used
> CHU (14.670 MHz) in Ottawa.
I didn't know that such a group existed, or that these experiments had
been done.
>
> In fact, the lower you go in frequency, the longer the duration of the
> reflection and the higher the reflected-signal amplitude (assuming all
> other things being equal). So the lower frequencies should be much better
> for meteor detection.
Did you every have a problem with swamping the detector? A rate of
detection that was high enough that with the longer duration returns
that some of the weaker returns were lost when they overlapped?
Ron also mentioned
> shortwave stations (I think).
Not me, as the only one in Canada I know of is in Sackville, NB, which
changes radiation patterns and broadcast schedules frequently.
>
> An ideal opportunity for meteor detection should be the 10-meter amateur
> radio band, especially during showers. If we could get enough amateurs on
> 10-meters there should be lots of reflected signals.
What about setting up a small grid of beacons on 28 MHz. If we phased
locked the transmitter frequencies to a GPS reference, or LORAN, either
of these use atomic clock references, we could measure phase shifts in
the echoes. No need then for radio amateur activity on the band, the
beacons could run 24 hrs a day.
The ODXA has run two
> tests so far on 10-meters.
We are going to try again in November
> (during the Leonids).
Please e-mail, I'm a member of the local amateur radio club and I'll
pass the word on.
but we need
> more stations operating.
Or beacons on 28 and 24.9 MHz ???
I'm hungering to build a few beacons. I'd like to see some in
Newfoundland, 28 through 144 MHz and up if I could find material to work
with. However, on my celery I'm restricted to a scavenger's diet. Most
of the local hams have a tossed salad of used components, but beacon
bits are hard to come by here :-)
Ron (in Gander)
--
R & L Thompson, 9 Medcalf St., Gander, NF, Canada A1V 1R9
Tel (709) 256-1179, Fax (709) 256-8638, e-mail rlthompson@thezonedot net
Amateur Radio Station call VO1AV, FP5EK, VE1KM Grid Square GN28qw
Location 48 57'08" N 054 36'43" W,
Local time UTC - 2.5 hrs Summer, UTC - 3.5 hrs Winter
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