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Re: Leonids




I am repeating a post from APRSSIG. Hope it helps.

Concerning PASSAll; I suspect one may be able to garner some useable 
information from a partially corrupted packet.
 
On 17 Nov 99, at 11:20, n4zo@sccoast.net wrote:

>  Where should the antenna should be pointed to take advantage of this
> meteor shower.


From:           	pmarkham@NEWSGUY.COM
To:             	"TAPR APRS Special Interest Group" <aprssig@lists.tapr.org>
Date sent:      	Mon, 15 Nov 1999 11:05:11 -0500
Subject:        	[aprssig] MS: Antenna points where?
Send reply to:  	pmarkham@NEWSGUY.COM
Priority:       	normal

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My last post on this subject:

As a consequence of some public and private email, I can only, once again, 
point out that the major propagation mechanism for meteor scatter work is the 
reflection off a meteor trail between and at right angles to both of  2 
stations trying to communicate. For maximum chance of success, the antennas of 
both stations would be at right angles to the majority of meteor  paths, 
therefore, at right angles to the bearing of a shower radiant, if one is 
present.

Antenna offset toward the downhill portion of the path between both stations 
might be considered by purists to optimize the propagation supporting geometry. 


The best path geometry occurs when the radiant meets the above requirements and 

is 45 degrees above the horizon relative to both stations.

The above might be considered the first lesson of Meteor Scatter 101.

You can point your antenna in any direction you want. You can point your 
antenna to a desired bearing and wait for that random meteor to blaze a path 
between you and your target. If you wish to track the Leonids radiant, thats 
alright too, if you expect that meteor head reflections provide a better chance 

of success than the much longer trail; that's your bizz. If your idea of 
working meteor scatter is to be operating when a meteor storm is in progress
and optimized geometry may be of little consequence, that's ok too. If the best 

geometry is unavailable at the time you wish to operate, and you wish optimize 
for the conditions that exist, or try EME, that's ok. To paraphrase one wiser 
than most, "It aint nobody's business but your own."

I just ask that information that might help the neophyte meteor scatter 
operator garner a degree of success was based a little more on physics and a 
little less on imagination.

Pete/wa4hei

Eschew obfuscation.
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