[aprssig] APRS RFID in Hara Arena on APRS.FI

Scott Miller scott at opentrac.org
Tue Feb 16 13:47:07 CST 2010

This was apparently done with the OpenBeacon active tags... I've got a 
couple of samples on my desk here.



Lynn W. Deffenbaugh (Mr) wrote:
> Bob,
> It looks like you created the objects in one location and then moved 
> them to their current locations?  I've captured how these objects look 
> in APRSIS32 at various zoom levels and posted them to 
> http://tinyurl.com/DaytonRFID
> To get them to actually touch one another, the zoom is 110 feet for the 
> diameter of the circle (upper right corner).  At that zoom level, 
> maximizing the window on my 1920x1400 laptop screen still only gives 196 
> feet of vertical space.  So with a map that covers the entire arena, I 
> suspect there's not enough room to show stacks at each location, even 
> with a large screen.
> Great idea though, and I'm anxious to see how it all comes out.  Who 
> knows, it might even get me to add a toggle-option to my client to show 
> or hide callsigns next to the icons!  Especially when I expect most of 
> them to be people walking!
> Lynn (D) - KJ4ERJ - Author of APRSISCE for Windows Mobile and Win32
> PS.  To download my client, join the APRSISCE Yahoo Group at 
> http://groups.yahoo.com/group/APRSISCE/ or just click the link at the 
> top of the thumbnail page above.  It's free!
> PPS.  If you haven't seen these on APRS.FI yet, here's a direct link:
> http://aprs.fi/?lat=39.8215&lng=-84.2567&mt=m&z=19&timerange=86400 (only 
> good for 24 hours unless Bob is refreshing the objects)
> Robert Bruninga wrote:
>> RFID on the map!
>> Zoom into Hara arena (Dayton Ohio) 3949N 8415W and you will see
>> 10 RFID simulated objects in the HARA arena.  They are spaced
>> every 15 feet using the !DAO! Format and apparentlly APRS.FI can
>> resolve them just fine. 
>> The APRS RFID spec has now been updated to rev4 with the
>> addition of the additional parameter indicating if the person
>> was walking over, stepping on or standing at the HotSpot RFID
>> reader.  See http://aprs.org/aprs-rfid.html
>> So, the APRS infrastructure is completely ready to begin
>> receiving and displaying RFID locations.  Now all we gotta do is
>> assemble the Tag-Trackers as I call them, one at each door or
>> location... And we can add this very powerful APRS capability to
>> our toolbox.
>> Bob, Wb4APR
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