(meteorobs) OT- To interested forward scatter operators.
bob71741 at yahoo.com
Sat Jan 24 18:52:40 EST 2009
For what its worth, I added to the files section design details and
photos of my home made Yagi and Moxon antennae that I use to monitor
NAVSPASUR. The program and spreadsheet are from L.B. Cebik, a noted
ARRL antenna expert, who recently passed away.
The Moxon antenna is only two elements, but is easy to build using 1/2
inch PVC and #12 wire. I was planning on building a 5 or 7 element
Yagi, but after I got my LNA installed (23 dB gain, 0.7 dB N.F.), the
performance of my setup increased so that the higher gain antenna was
I use the Moxon design for monitoring SNOTEL, which at 40.53 MHz would
be a large antenna for the Yagi and my back yard. The "folded" Moxon
fits in quite nicely. I also have an LNA for that as well, only 20 dB
of gain with 0.6 dB noise figure.
--- In meteorobs at yahoogroups.com, "stange" <stange34 at ...> wrote:
> General question to the meteor scatter folk-
> Is there enough general interest in making forward scatter Yagi's
> frequency or gain from hardware store and Radio shack materials for
> put up pages on my website?
> It will require careful skill with common tools and soldering to make a
> product equal too or better than what you can buy, from everyday
> About 1 weekend of work.
> If not, I can help you Thomas by private e-mail. The ARRL based
> have already been programmed and available on-line for
> hams. It just requires putting it together mechanically.
> ----- Original Message -----
> From: "Thomas Ashcraft" <ashcraft at ...>
> To: "Global Meteor Observing Forum" <meteorobs at ...>
> Sent: 2009/01/24 07:34
> Subject: Re: (meteorobs) Thomas -3 element 220 yagi
> > Thanks fellows for thinking on this issue.
> > It now looks like the transition to digital tv may not happen
> > 12 so there will be optimum forward scatter meteor reception
> > possibilities till then. Analog was supposed to end mid-February.
> > In actuality, the space radar may not serve my particular research
> > purposes due to distance from the radar site but I will continue
> > information on the subject and will report what I find for the list
> > archives.
> > Clear skies,
> > Thomas in New Mexico
> > http://www.heliotown.com/Ashcrafts_Fireball_Archive.html
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