[Xastir] What is very large rectangle with X in center on station?

Curt Mills curt.we7u at gmail.com
Fri Feb 21 09:21:02 PST 2020


I didn't see the original message come across the list, only Tom's response.

You can turn off display of such rectangles here:

Station -> Filter Display -> Display Position Ambiguity

On Fri, Feb 21, 2020 at 8:08 AM Tom Russo <russo at bogodyn.org> wrote:
>
> It's a station transmitting with position ambiguity (truncated precision
> position).  The box represents the range of positions that the station could
> be in given the limited amount of data it transmitted.
>
>
> http://blog.aprs.fi/2011/01/position-ambiguity-support.html
>
> http://www.aprs.org/symbols.html
>   (APRSdos used circles for ambiguity)
>
>
> On Fri, Feb 21, 2020 at 10:05:16AM -0600, we recorded a bogon-computron collision of the <billbird at cal.berkeley.edu> flavor, containing:
> > Hi,
> >
> > In the St. Louis, MO area I see from time to time on my Xastir map (rf only)
> > a very large rectangle (more than 50 miles in North/South direction) with an
> > X on the station AC0MW-7.?? The X goes from corner to corner of the
> > rectangle.?? The X and the rectangle are made of dashes.?? I have been using
> > APRS since APRSdos and continue to enjoy it.?? The current Xastir map is
> > shown on my website, www.billbird.com.?? I've tried to discover the answer
> > on my own but have not been able to.
> >
> > Thanks and 73,
> >
> > Bill Bird
> > KG0YJ
> > _______________________________________________
> > Xastir mailing list
> > Xastir at lists.xastir.org
> > http://xastir.org/mailman/listinfo/xastir
>
> --
> Tom Russo    KM5VY
> Tijeras, NM
>
>  echo "prpv_a'rfg_cnf_har_cvcr" | sed -e 's/_/ /g' | tr [a-m][n-z] [n-z][a-m]
>
> _______________________________________________
> Xastir mailing list
> Xastir at lists.xastir.org
> http://xastir.org/mailman/listinfo/xastir



-- 
Curt, WE7U        http://xastir.org        http://www.sarguydigital.com


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