[OZAPRS] APRS on 30 metres HF (Robert Bruninga)

[Robert Bruninga]

> Why WIDE1-1?

See HF.TXT.

Because all HF packets in the world using the path of VIA
GATE,WIDE1-1, have the potential to enter ALL local VHF networks
all over the world.  This is OK, when they get gated into a
local
network *locally*.

But if those same HF operators use the path of VIA
GATE,WIDE2-2, then there are two BIG problems:  1) they would be
multiplying their potential presence in *every* local area by a
factor of 4 to 5 or more everywhere because they would be
flooding everywhere.  And 2) the AREA being QRM'ed is no longer
"local" to the GATE doing the flooding, and hence the areas
being QRM'ed have no local control over the flood in their area.

It is the number 1 rule in APRS.  Do unto others as you would
have them do unto you.

Due to the low bandwidth of the 1200 baud APRS channel, it is
best when local sources of outside area QRM are kept under Local
control.  Hence, the courteous HF operator uses a path no longer
than GATE,WIDE1-1 to keep his packets *local* to the Distant HF
gate that is injecting them into his -local- area.

Just makes it courteous to everyone else...

Bob, WB4APR



> On Thu, 08 Feb 2007 23:55:41 +1100, Radio <radio at dodo.com.au>
wrote:
> 
> > Well, I based my original setup on the pages that Tony, 
> VK5AH quoted in  
> > good
> > faith. Today, I phoned Ross, VK3MY and he suggested GATE, 
> WIDE1-1 was the
> > correct path. I guess there are now conflicting settings 
> that need to be
> > adjusted, to suit a common agreed path setting for  HF 
> stations on 30
> > metres,  that are mobiles etc.
> >
> > Jack VK4JRC QG56FJ
> >
> > Tony wrote....
> > Snip>
> >
> > Just isnt true.. Recomending anything with WIDE1-1 isnt
allways  
> > guaranteed
> > to get very far either
> >
> > That might all work nice for you but are we really expecting
the  
> > Ionosphere
> > to work that well that we can make regular use of your HF 
> gates over  
> > there
> > ?? I think not. By the way we have our own HF gates over
here and  
> > sometimes
> > they pick up posit beacons transmitted from your gateways ..
> >
> > Maybee for the best solution to the question in VK land 
> have a look at  
> > this
> > web page which isnt all that dated.
> > http://www.aprs.net.au/hf_aprs_information.htm
> >
> >
> > Tony Hunt  VK5AH
> >
> >>
> >> Message: 2
> >> Date: Wed, 7 Feb 2007 18:39:58 -0500
> >> From: "Robert Bruninga" <bruninga at usna.edu>
> >> Subject: Re: [OZAPRS] APRS on 30 metres HF
> >> To: "'Radio'" <radio at dodo.com.au>, "'VK / ZL  APRS Users'"
> >> <ozaprs at aprs.net.au>
> >> Message-ID: <026e01c74b11$473c7460$42577a83 at SGSbb>
> >> Content-Type: text/plain; charset="us-ascii"
> >>
> >> > I have tried several HF path variations like GATE,
> >> > WIDE and did not make it to www.findu.com
> >> >
> >> > What is the correct path statement that should be used?
> >>
> >> The path that has always been recommended since we first
began
> >> HF APRS on that freequency back in 1993, that is, VIA
> >> GATE,WIDE1-1.  (it used to be VIA GATE,WIDE, but the WIDE
part
> >> of that is now obsolete and will not work).  See the
original
> >> HF.TXT file.  See the web page:
> >>
> >> http://www.ew.usna.edu/~bruninga/gates.html
> >>
> >> Do not use ECHO.  The page explained above tells why...
> >>
> >> Thanks
> >>
> >> Bob, Wb4APR
> >>
> >
> > _______________________________________________
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> > Ozaprs at aprs.net.au
> > http://aprs.net.au/mailman/listinfo/ozaprs
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> >
> >
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