[FADCA] Fwd: Fw: [aprssig] Re: APRS broken

Sun, 21 Apr 2002 07:41:53 -0700 (PDT)

Bill Gutherie sent me this. Thanks, Bill.

I was out of town and put off reading the note until I had a
few minutes to digest what it was all about.  We have two
UHF frequencies set aside for APRS networking in Florida. We
also have a growing implemtation of FPAC and (finally) we
are working on upgrading our network links to 9.6 in North
East Florida between Jax and DAB.

What do you think? I don't have the addresses of the Florida
APRS group but we do have some of thier devices in the
database.

Some of their supporters have highspeed internet
connections.  We need to combine resources and
infrastructure, can we do it?

Russ

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Subject: Fw: [aprssig] Re: APRS broken
From: "Bill Guthrie" <[email protected]>
Date: Wed, 17 Apr 2002 21:26:27 -0400
To: "Russell Oder" <[email protected]>

Hello:

I picked this up off the APRS Email Sig. I thought it very
interesting.

Bill
KC4OUA

----- Original Message -----
From: "Rich Garcia" <[email protected]>
To: "TAPR APRS Special Interest Group"
<[email protected]>
Sent: Wednesday, April 17, 2002 3:24 PM
Subject: [aprssig] Re: APRS broken

> This is something that I had brought up MANY years ago but
was dropped. I
> have long thought of APRS needing a backbone and even
tried stirring
> interest in the mid 90's for one reason, coverage. By
using a backbone
> system we could employ as has been mentioned beams, high
power, and other
> bands (heck even a old analog MW spur)to link WIDE digi's
over long
> distances.
>
> I spoke at great length with Tom Molton W2VY the author of
ROSE about this
> and some APRS code was actually written for ROSE switches
(the BTEXT and
UI
> Digipeating capability)but soon after Tom moved, changed
jobs and I think
> dropped the ROSE project entirely. I am not sure who is
responsible for
the
> code right now, I think it may be a club in Tampa.
>
> Yes it would be expensive to build a whole backbone
network but not if we
> would try to make use of ROSE nodes that are already out
there and
possibly
> gathering dust. Regular packet has died quite a bit in
some areas but not
> all. A 144.39 port could be added at existing ROSE switch
sites and use
the
> EXISTING backbone network. Florida had/has quite a bit of
ROSE and some
WIDE
> sites also have ROSE already there, it is just a matter of
the software.
>
> Last conversation with Tom W2VY was how we would do
addressing to have the
> APRS packet exit out the proper port at it's final
location using the
> current APRS protocol without modification. This was in
93' or 94' maybe
it
> is time to look into this possibility again.
>
> In a topography like we have in FL where high for us is a
1K foot tower
and
> population density is in pockets along the 2 coasts with
little but swamp
> and gators in-between we need long paths. Areas now split
like Miami and
> Orlando, or West Palm and Tampa can usually only converse
via the Igate or
a
> band opening. A backbone could possibly resolve this issue.
>
> Rich K4GPS
> [email protected]
>
> -----Original Message-----
> From: [email protected]
> [mailto:[email protected]]On Behalf Of
Guy Story,
> KC5GOI
> Sent: Wednesday, April 17, 2002 1:31 PM
> To: TAPR APRS Special Interest Group
> Subject: [aprssig] Re: APRS broken
>
>
> I am seeing simular issues in the DFW area with channel
saturation.  A
> backbone idea has been crawling about the back of my mind
too.  TexNet
does
> a
> very simular thing, so does ROSE.  The cost to build a
backbone will not
be
> trivial though.
>
> Why has this issue popped up?  IMHO several reasons.  1)
Improper useage
of
> unproto paths is still serious. 2) Beacon rates too often
for fixed
stations
> and mobile stations not moving.  3) txdelay to long is
sometimes an issue.
> 4)
> generic digipeat paths on WIDES and RELAYS.  I have seen
many a digi with
> WIDE4-4 instead of specific paths.  5) KPC3 ver 8.2 does
have a bug that
> does
> not always prevent the duplicate packets (this is not as
severe).
>
> There may be other reasons I am missing, but things are
getting very
crowded
> in some areas.
>
> 73
>
>
>
> On Wednesday 17 April 2002 11:25 am, Alan Heaberlin wrote:
> > > Subject: APRS High-Site BACKBONES
> > > From: Bob Bruninga <[email protected]>
> > > Date: Tue, 16 Apr 2002 20:31:40 -0400 (EDT)
> > > X-Message-Number: 42
> > >
> > > APRS is completely broken in many high populatrion
areas.  We must
move
> > > on past the "single-high-site-digi" 1995 APRS concept.
 I posted this
> > > before, but here it is again.  I also put this on a
WEB page:
> > >
> > > http://www.ew.usna.edu/~bruninga/backbone.txt
> > >
> > > BACKBONE DIGIS
> WB4APR
>
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