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[aprssig] The best resolution of position from APRS

Curt, WE7U archer at eskimo.com
Tue Jan 3 19:21:56 UTC 2006


On Tue, 3 Jan 2006, Robbie - WA9INF wrote:

> Copying from the Help File of UI-View32;
>
> Compressed - If this option is checked, then your position is
> transmitted in APRS compressed format. Please note that some software
> can't decode compressed format, and also it makes your beacons
> completely meaningless to any casual observer using a simple terminal
> program, so use this option with caution.
>
> I wonder if Roger used Base-91 Compressed format?
>
> So far, I find no further information yet... I assume if he programmed
> it to be sent, it would receive it, :-)

Yes.  My chart has the results of some extensive testing done
between Xastir and UI-View32.  It is Base-91 Compressed format that
he was talking about.

Compressed posits are in most of the APRS applications plus the
Kenwoods.  Compressed objects/items are in APRSdos, UI-View, and
Xastir.

--
Curt, WE7U.   APRS Client Comparisons: http://www.eskimo.com/~archer
"Lotto:    A tax on people who are bad at math." -- unknown
"Windows:  Microsoft's tax on computer illiterates." -- WE7U
"The world DOES revolve around me:  I picked the coordinate system!"




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