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

Lynn W. Deffenbaugh (Mr) ldeffenb at homeside.to
Thu May 24 01:45:49 UTC 2012


On 5/23/2012 9:35 PM, Keith VE7GDH wrote:
> Is DR actually giving you any more information about the storm?

Some AE5PL-WX-injected NWS objects include an initial position along 
with a speed and heading.  APRSISCE/32 will draw the storm in the 
original location and move a dead reckoned copy of the storm symbol 
according to the speed and heading until the expiration time of the 
event has been reached.  It's rather humorous at times to see the storm 
moving completely outside the highlighted area which tells me that the 
NWS office doesn't really check such things.

>
> Incidentally, what APRS client were you using that did the DR?

APRSISCE/32 of course!  Just check Screen / Dead Reckoning.  Any moving 
station will stay where it is and move a 50% transparent copy of the 
symbol in a dead reckoned fashion with a line connecting the two.  The 
forecasted station will automatically disappear if 5 minutes elapses 
since the last transmission.

You can even have up to THREE DR symbols depending on your settings 
under Screen / Labels / Speed options (especially All).

Lynn (D) - KJ4ERJ - Author of APRSISCE for Windows Mobile and Win32

>
> 73 es cul - Keith VE7GDH
> -- 
> "I may be lost, but I know exactly where I am!"
>
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