[FADCA] Fwd: Fw: [aprssig] Re: APRS broken
n4xeo
[email protected]
Sun, 21 Apr 2002 15:46:59 +0000
At 07:41 AM 4/21/2002 -0700, [email protected] wrote:
Hi All
I have also sent this to Rich so he can comment on it. Rich you might want
to join the fadca reflector to see all replies. If you need help let me know.
>http://mailman.qth.net/mailman/listinfo/fadca
We had Tom working on the FPAC code to allow the passage of aprs across the
fpac network (old rose). The work was stopped when we couldn't get the aprs
folks to change their code to allow for the use of routing across the
backbone. There has to be some kind of controlled access to the system so
there wouldn't be so much traffic that it slows down the network. My
thoughts would be to have the major cities or areas able to connect or
something like that to keep 10,000 packets just being repeated over and
over. The major hubs in a area can hear everything and they would be the
only ones that would need to make the connections in the area. Kind of like
the igates....You wouldn't want EVERYONE to run a Igate..
I haven't talked with anyone in a while about the fpac code, but the last I
remember was that the feature was added but not tested. This is where the
APR folks come in.
Rich,
If you can get some kind of code change to make it work over a network then
we can see how our code changes might or might not work.
Again from what I remember FADCA has welcomed this concept but there has
been NO talking about it...
I'll leave it here and see where this goes.
Bill N4XEO
>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
>
>------- Start of forwarded message -------
>
>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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>
>------- End of forwarded message -------
>
>
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73, Bill N4XEO
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