[aprssig] The best resolution of position from APRS

Robbie - WA9INF mwrobertson at comcast.net
Tue Jan 3 13:40:22 EST 2006

Curt and the group,

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, :-)


Curt, WE7U wrote:
> On Tue, 3 Jan 2006, Andrew Rich wrote:
>>I have been playing with UI-VIEW and I notice I can not get my position
>>quite on for APRS.
>>I think I am seeing the limitation to the co-ordinate system being used.
>>Which begs me to ask. What is the best resolution and how from the APRS Spec
> Base-91 Compressed format.  Chapter 9 of the published spec.  Gives
> you something like 1-2 feet resolution (about 1/3 to 2/3 of a
> meter).  Not all APRS applications support it though.
> --
> 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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