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

Fri Feb 9 08:47:27 EST 2007

Yes, I understand the importance of the path length limit, but why  
WIDE1-1?  Why not WIDE2-1?  In my way of thinking GATE, WIDE1-1 is the  
same as GATE, RELAY in the old setup.  GATE, WIDE2-1 is the same as GATE,

WIDE.  Here in Burnie there is a HF gate, we use the New Paradigm.  If a  
frame is addressed to GATE, WIDE1-1 it will activate 2 extra local  
fill-ins unnecessarily, as well as all the wides, doing nothing at all to

help the frame get to an IGate, and wasting valuable air time.  I'm sure  
similar would happen in other networks.  So, if keeping traffic low is the

number one rule, then why are we advertising a path that increases it  
needlessly?

Dion.

On Fri, 09 Feb 2007 01:29:55 +1100, Robert Bruninga <bruninga at usna.edu>  
wrote:

>> 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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>> >
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