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[aprssig] Fundamental APRS capacity

Earl Needham needhame1 at plateautel.net
Mon Oct 4 13:55:57 UTC 2004


At 04:15 AM 10/4/2004, Rick Green wrote:
>On Mon, 4 Oct 2004, Robert Bruninga wrote:
>
> > Here is the algorithm to exactly (in real time) determine what
> > the ALOHA circle range is for any user:
> >
><snip>
>  Great explanation, and the algorithm seems reasonable, but you stopped at
>the most critical point.  How do you use this information to come up with
>a reasonable path.  Should it be 'RELAY, WIDEC-C'?

         I have a couple of questions, too --

         1.  If there's a hamfest in your area, do you shorten your path to 
fit the closest 60 stations?  What if there are 60 hams using APRS in the 
lot next door?

         2.  I notice that when I look at 
http://www.findu.com/cgi-bin/near.cgi?call=KD5XB-2 (to get the nearest 40 
stations), a number of those stations are in Amarillo, but we don't have a 
path to Amarillo.  How do we adjust for this?  Surely I'm not the only one 
in the country in this situation.  (I guess the algorithm Bob posted 
operates on packets received, right?)

         7 3
         Earl


Earl Needham, KD5XB, Clovis, New Mexico  DM84jk







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