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[aprssig] APRS Network Analysis

Herb Gerhardt hgerhardt at wavecable.com
Sat Sep 23 17:58:35 UTC 2006


Interesting data.

Looks like the European APRS networks will be forced into adapting the North
American new settings.  It is just a matter of time before more and more of
their networks will have to follow suit.  This is due to, not only would
they have a more efficient APRS Network but the problem with our great
internet is that OLD pages do not get updated when major operational changes
are made.  New people researching the Internet for more information find
lots of USA pages with current recommended settings for the US which they
think are the settings they also must use regardless of where they are
located.  So right now, we still have lots of confusion as to the correct
settings.

The only real resolution is that we all use the same settings world wide and
people who have web pages out there need to update or just delete pages that
contain the wrong settings.  Keep in mind, there was a reason why we changed
our path settings.  It makes the APRS System more efficient, we just need
the few hold-outs to update their digi's to the new settings.

Sure would be nice if a mobile path of WIDE1-1,WIDE2-1 would work WORLD
wide!  I can dream, can't I?

Herb, KB7UVC
NW APRS Group, West Sound Coordinator
Our WEB Site:  http://www.nwaprs.info



> -----Original Message-----
> From: aprssig-bounces at lists.tapr.org
> [mailto:aprssig-bounces at lists.tapr.org]On Behalf Of Andy Pritchard
> Sent: Saturday, September 23, 2006 10:30 AM
> To: TAPR APRS Mailing List; ui-view at yahoogroups.com
> Subject: [aprssig] APRS Network Analysis
>
>
> Hi All
>
> I have put together a quick UI-View32 addon to analyse the paths
> used on the
> APRS network and plot the analysis on UI-View32
>
> http://www.apritch.myby.co.uk/networka100.zip
>
> http://www.apritch.myby.co.uk/networka.jpg
>
> What is interesting about the analysis is that the sample showed that in
> Europe [WIDE1-1,WIDEn-n] is used in 892 paths whilst [RELAY, TRACEn-n] is
> used in 429 paths.
>
> What is most concerning about this is in Europe most digipeaters do not
> implement UITRACE on the WIDEn-n (it's on TRACEn-n)
>
> Because of this we need to inform our users to stop using WIDE
> and WIDEn-n
> in there paths and to make use of the default TRACEn-n
> functionality built
> into our European APRS network
>
> Snapshot details:
>
> ******************
> ***EUROPE***
> ******************
>
> http://www.apritch.myby.co.uk/temp/eu.jpg
>
> 2627  Total Stations
>
> 160   RELAY, WIDE, TRACE, WIDEn-n, TRACEn-n
> 20    RELAY, WIDEn-n, TRACEn-n
> 429   RELAY, TRACEn-n (EU Nirvana)
> 99    RELAY, WIDEn-n
> 137   WIDEn-n, TRACEn-n
> 892   WIDE1-1,WIDEn-n (USA Nirvana - IF Traceable)
>
> 1103  WIDEn-n
> 669   TRACEn-n
> 232   RELAY
> 316   WIDE
> 61    TRACE
> 29    WIDE1-1
>
> ******************
> ******USA******
> ******************
>
> http://www.apritch.myby.co.uk/temp/usa.jpg
>
> 2589  Total Stations
>
> 40    RELAY, WIDE, TRACE, WIDEn-n, TRACEn-n
> 0     RELAY, WIDEn-n, TRACEn-n
> 13    RELAY, TRACEn-n (EU Nirvana)
> 18    RELAY, WIDEn-n
> 0     WIDEn-n, TRACEn-n
> 1196  WIDE1-1,WIDEn-n (USA Nirvana - IF Traceable)
>
> 1095  WIDEn-n
> 14    TRACEn-n
> 57    RELAY
> 178   WIDE
> 0     TRACE
> 125   WIDE1-1
>
> Andy, M0CYP - Telford
> http://www.apritch.myby.co.uk/uiview.htm
> http://www.apritch.myby.co.uk/radioprop.htm





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