<div dir="ltr">In a feeble, off the cuff, maybe-it-would-work first suggestion, how about averaging the lat and lon of the stations digipeated by the stealth digi, and have position ambiguity of 10 miles?<div><br></div><div>Theoretically, the digi would be somewhat central to those stations that were digipeated by it, thus averaging the lat and long would place the digi somewhere in the area outlined by the locations of the stations digi'd by it. </div><div><br></div><div>There are exceptions to this thought, of course, but better than nothing at all!</div><div><br></div><div>Randy</div><div>WF5X</div><div><br></div></div><div class="gmail_extra"><br><div class="gmail_quote">On Thu, Dec 11, 2014 at 10:05 AM, Andrew P. <span dir="ltr"><<a href="mailto:andrewemt@hotmail.com" target="_blank">andrewemt@hotmail.com</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
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Does anyone have any advice or opinion on vicinity plotting of stealth digipeaters? Or have I stepped into a brave new world here?
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<div>Andrew, KA2DDO </div><div><div class="h5">
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-------- Original message --------<br>
From: "Andrew P." <<a href="mailto:andrewemt@hotmail.com" target="_blank">andrewemt@hotmail.com</a>> <br>
Date:12/05/2014 13:20 (GMT-05:00) <br>
To: TAPR APRS Mailing List <<a href="mailto:aprssig@tapr.org" target="_blank">aprssig@tapr.org</a>> <br>
Subject: [aprssig] Vicinity plotting of stealth digipeaters <br>
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<div>Greetings, all.
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<div>I've got a question about vicinity plotting (i.e., guessing where a station is based on its first digipeater's position when the station hasn't reported its position yet).</div>
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<div>Is it reasonable to do this in reverse, i.e., guessing where a first digipeater is, based on the position report of the digipeated station? Because stealth (non-beaconing) digipeaters are common in my area, I have implemented a first draft of this in my
YAAC program.</div>
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<div>I assume this needs to be improved, perhaps using direction-finding tricks such as guessing the digipeater has to be within the PHG range circles of all stations it has first-digipeated.</div>
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<div>But should I be doing this kind of approximation at all?</div>
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<div>Just curious.</div>
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<div>Andrew, KA2DDO </div>
<div>(putting my asbestos shorts on now :-)</div>
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