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[aprssig] APRS return to basics (DR) (new images)

Randy Allen ka0azs at earthlink.net
Thu May 24 00:46:34 UTC 2012

I'll chime in that I have used DR on several public service events over 
the years as a Net Control and I find it very useful.

Not only for monitoring vehicles with RF trackers, but in placing 
objects on the board with a course and speed for runners and bike riders 
without a tracker.  I've used this to give heads ups to turn point and 
rest stop operators.

It's also sometimes easier to ID a station that has a tracker 
malfunction, when their voice reports show them someplace away from 
where the DR places them.

When busy with a (or several) voice frequencies at net control, it's 
nice to have the computer do the work so I can quickly update my 
situational awareness while not over tasking my limited wet ware.

It's also handy to watch storms being plotted by the NWS servers and 
tracking along the screen.

I really appreciated it when DR was added to APRSIS32.

For whatever my opinion is worth.



On 5/23/2012 20:08, Keith VE7GDH wrote:
> Bob WB4APR wrote...
>> I have added my recent CSE/SPD leader and Dead-Reckoning notes...
> I've never used a system that used dead reckoning, but I don't think
> I would like the feature. I know you think it is important, but my
> feeling is that I would rather know what is fact... i.e. where a
> station was last heard and it's course and speed and let the computer
> between my ears theorize if they kept moving, completely missing
> the next bend in the road, or if they just stopped there. As I
> mentioned, I've never used anything that used DR, so all I have
> to go on are my thoughts on the subject. I can however tell from
> a glance at the map the direction and approximate speed by the
> "vector" drawn on the map... i.e. a short line for a slow moving
> station and a longer one for a faster moving station.
> At risk of unleashing your wrath, I hit send - hi!
> 73 es cul - Keith VE7GDH
> --
> "I may be lost, but I know exactly where I am!"

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