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[aprssig] BUOY-4 Semi-manual Plotting...

Steve Noskowicz noskosteve at yahoo.com
Thu Aug 7 06:12:00 UTC 2008


Having a bit if fun chasing this thing...

   I decoded the BUOY-4 packets' Mic-E Latitudes with Excel spreadsheet formulas, using the APRS spec and aligned this with the Findu lat/Lon/Speed data.  Then I made my own map/graph of it and labeled the points with the raw packet's time stamps from findu.
   I also made a graph/map of Lat/Lon from the findu data and aligned it with the breadcrumb png.

It looks like they picked it up after the last "drifting" packet which was at 14:04 UTC.  N38 56.83'   
I added the time colons in these times.
2008 08 06 14:04:34,BUOY-4>S8UV8S,WIDE1-1,WIDE2-1,qAO,W3ADO:`h6`l!FN\W3ADO, V-ok

Then, the next beacon was at 14:14 while they were steaming N.E., where findu said the speed was 20.    N38 57.68'
2008 08 06 14:14:28,BUOY-4>S8UW6X,WIDE1-1,WIDE2-1,qAO,W3ADO:`h5n @N\W3ADO, V-ok

Interesting experiment.

73, Steve, K9DCI


      




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