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[aprssig] APRS in New Orleans got one packet out!

Patrick Green pagreen at gmail.com
Thu Sep 8 03:29:08 UTC 2005


I may be reporting to the area to help in a week or so. When that happens we 
will have laptops that will have satellite internet connectivity. Maybe I 
can link one up to an APRS station to provide a portable I-Gate. I don't 
have a lot of info on this yet. I'll let you know as more info becomes 
available. If I can use such a setup, I'll probably want to use something 
better than a D7A because of its KISS limitations.

73 de Pat --- KA9SCF.

On 9/7/05, Robert Bruninga <bruninga at usna.edu> wrote:
> 
> K9APRS foot mobile in New Orleans just got a posit out!
> 
> With exceeding luck, his packet digipeated with
> one-hop via the New Orleans W5UK-9 digi just got
> out via a lucky shot to an IGate over 160 miles away!
> 
> http://www.findu.com/cgi-bin/find.cgi?call=K9APR-7
> 
> Here was his D7 position report (within .2 mi of the digi):
> K9APR-7>2YUT3X,W5UK-9*,qAo,AA5ED-10:`vZ1l [/>
> 
> Notice that his packet was heard via the one-hop
> W5UK-9 digi and then via an IGate over 160 miles away!
> (AA5ED-10).
> This confirms that there are stations in the downtown
> area being seen locally by the W5UK-9 one-hop digi,
> but nothing is getting beyond that because
> that digi truncates all packets to one hop and
> does callsign substitution, thus canceling the
> rest of his original path. There is not an IGate
> that can hear that digi direct. We need one.
> 
> But that W5UK-9 digi is at 600 feet! in downtown
> New Orleans. It can be heard direct over 60 miles
> away. If t here is anyone with an IGate, not
> involved in emergency response that can simply
> point a beam towards New Orleans and get those
> packets from that digi after their one-hop, then that
> Igate will re-constitute APRS connetctivity to
> downtown New Orleans.
> 
> Good luck!
> Bob
> 
> >>> Robert Bruninga 09/06/05 8:39 PM >>>
> Please pass this to whoever might be trying to
> re-constitute the APRS network in New Orleans:
> 
> It can be done easily!
> 
> THe main APRS digipeater in New Orleans is working
> fine at 600 feet and covering over 5000 square miles!
> BUT, it is a rare one-hop-only digi. This means that
> although the beacons from that digi are making it
> to the global APRS system via 2 hops, any APRS mobiles
> or traffic originated via that digipeater are not making
> it out (because they are being limited to one hop only).
> 
> All that is needed is someone with an APRS IGate
> software within 90 miles of New Orleans to point a
> beam at the W5UK-9 digi in downtown so that
> his IGate can hear the digi direct. WIth this one
> station, it will tie-in the entire New Orleans
> network to the global APRS system to completely
> restore connectivity.
> 
> Locals may not be noticing this problem. Yes, they
> are SEEING the W5UK-9 digi on their systems, but
> that is because that digi is sending out its OWN
> ID beacons via 2 hops, but it can only send out
> the packets from its USERS as one-hop.
> 
> The nearest IGates in Alabama and Baton Rouge
> are 2 hops away. THus nothing is getting out of
> New Orleans except only the DIGI's beacons.
> 
> Hope you can get this to someone who maybe has
> the ability to re-establish the APRS conectivity
> out of New Orleans.
> 
> Bob Bruninga, WB4APR
> 
> 
> 
> 
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