No subject
Sun Aug 23 09:03:27 EST 2009
WIDEn-n floods equally in ALL directions with dozens if not almost 100
copies of your transmitted data. We can not afford this QRM in our network.
If each digi can hear 3 others, including the original here is the resulting
number of Copies at each HOP:
This is if the original packet hit TWO digis at
the beginning and each digi can hear 3 others.
SETTING 1st 2nd 3rd 4th 5th 6th 7th TOTAL
------- --- --- --- --- --- --- --- -----
WIDE1-1 2 2
WIDE2-2 2 4 6
WIDE3-3 2 4 8 14
WIDE4-4 2 4 8 10 24
WIDE5-5 2 4 8 10 14 38
WIDE6-6 2 4 8 10 14 16 54
WIDE7-7 2 4 8 10 14 16 20 74
……….
Each state needs to decide the maximum number of hops required so that they
can set a guide to configure consistent digipeater parameters.
Changing the subject slightly, I don’t think we should refer to digi hops as
Wide2-2 or Wide3-3 etc as this becomes confused with the literal path
settings.
Cheers
Richard
VK3JFK
---- vk7arn <vk7arn at bigpond.com> wrote:
> Andrew
>
> Answer - depends. Are we talking:
>
> reaching an Igate reliably, or
> reaching a reliable Igate
> reaching a reliable digi which reaches a reliable Igate
>
> Current situation in Tas is (to the best of my knowledge) -
> - The key digi RAA is off air due to a blown fuse (requires a bit of an
> expedition to fix).
> - The antenna on RAA which reliably reaches the south of Tas is in need of
> attention by a qualified rigger (tower rules) so a temporary one is in use
> (when
> the fuse is not blown) which rarely reaches the southern digis
> (propogation
> dependant).
> - There doesn't appear to be an Igate in the north east of Tas - depends
> on
> north west Igate being fed by RAA in the north east.
> - There was an Igate in the east of the north west but has been off for
> some
> time, leaving a bit of a hole in the middle.
> - There are still many areas in Tas which do not have affordable,
> dependable
> broadband access.
> - There are lots of big hills and deep valleys in Tas.
>
> There are some of us who would like to see whole of State coverage and are
> working towards it. Dick VK7DIK's new digi at RWC on the West Coast,
> feeding
> his Igate in the valley below has made a tremendous difference. Wide
> coverage
> is going to need a variety of solutions, which may involve WIDE3-3
>
> What I'm saying is, for all sorts of reasons, in Tas at least, there needs
> to be
> redundancy in the system.
>
> Why not have words to the effect that WIDE2-2 is the default, with a note
> that
> special circumstances may dictate WIDE3-3, but this should only be applied
> following consultation on requirements with the local System Operators
> (and try
> to maintain a list of who they are?).
>
> To put things in a context, in April 2007 there will be several Amateurs
> in APRS
> equipped cars driving round the state working as volunteer comms Officials
> on
> Targa Tasmania. This provides a tremendous opportunity to challenge
> knowledge
> and skills AND will provide a wonderful "spectator" event. Beats watching
> Fred
> drive to work each morning and checking the temperature at Joe's place!
> Could
> even supply a map with all the Targa stages marked!
>
> Cheers
>
> Roger vk7arn
>
> PS Maybe one of you aeronautical types would like to fly round Tassie for
> the
> week with your airborne digi!
> PPS I'm reliably informed that the article on APRS coverage of the
> Tasmanian
> Safari heat of the Australian Rally chamionship will be in November's A.R.
> mag.
> The interesting aspect is how we used the one frequency for voice and
> APRS.
>
> -----Original Message-----
> From: ozaprs-bounces at aprs.net.au [mailto:ozaprs-bounces at aprs.net.au] On
> Behalf
> Of Andrew McDade
> Sent: Friday, 10 November 2006 08:38
> To: Tony Hunt; VK / ZL APRS Users
> Subject: Re: [OZAPRS] European v USnewparadigmand pathlimiting
> +confusion....
>
>
> I guess the question we need to ask, is whether 2 hops will allow ALL aprs
> stations within Australia to reach an Igate reliably.
>
> If we have a situation where all stations can hit an Igate in 2 hops or
> less then well and good, WIDE2-2 is definitely the way to go. But if there
> are still some areas that require 3 hops to achieve this, then where are
> we
> with regards to a standard, default, documentable, promotable Nation Wide
> config for general APRS users.
>
> I would hate to see a situation where we've got different default configs
> for different areas ie. WIDE2-2 for some areas and WIDE3-3 for others. I
> think this would be a regressive step.
>
> So the question again , are there any areas within Australia that require
> 3
> ( or more ) hops to reliably access an Igate ?
>
> Regards .. Andrew .. VK5EX
>
>
> ----- Original Message -----
> From: "Tony Hunt" <wavetel at bigpond.com>
> To: <ozaprs at aprs.net.au>
> Sent: Thursday, November 09, 2006 8:12 PM
> Subject: Re: [OZAPRS] European v USnewparadigmand pathlimiting
> +confusion....
>
>
> > Whats this idea I see of WIDE3-3 for home stations?? Currently we
> > recomend and use predominantly WIDE2-2 in Adelaide .. If we use
> > WIDE3-3 then we will cross the border to Mildura and Ouyen .. Is there
> > any need for this many hops if all satations are within 2 hops of an
> > Igate ?? WIDE3-3 will just increase the amount of traffic in our
> > situation and likely insure alot of VK3 traffic right through to Pt
> > Linclon instead of just the occasional bit here and there..
> >
> > Or are we going to recomend WIDE3-3 and then Trap the last hop in the
> > digis
> > which is one approach..
> >
> > Ive seen this WIDE3-3 mentioned a couple of times now and thought it
> > must have been a typo at first ..
> >
> > Also 50 stations within 50miles of Adelaide.. I concur with Terry.. We
> > must
> > be on a different map or planet to Bob .. Our Igate shows about 15
> > locals
> > presently which is about normal
> > http://121.44.67.103:14501/
> > There are 23 VK5s currently listed on my Client here some of which are
> > via
> > the Igate and not on RF..
> >
> > There are about 40 listed here but about 1/2 of them are over a day
> > old
> > with
> > no recent posits.
> > http://www.findu.com/cgi-bin/find.cgi?vk5*
> >
> > 50 Stations!! I gota to see that .. Talk about rush hour in Adelaide..
> > We are just an oversized country town here and pleased to be that
> > way..
> >
> > Melbourne is the traffic worry on 2m APRS from what Ive experienced..
> >
> > Tony Hunt VK5AH
> >
> > ----- Original Message -----
> >> Your thoughts Richard 3JFK too please.
> >>
> >> Regards,
> >> Ron
> >>
> >> On Wed, 2006-11-08 at 11:06 +0800, Chris Hill wrote:
> >> > Hi All,
> >> >
> >> > May I suggest the following "KISS" outcome for APRS in VK:
> >> >
> >> >
> >> > 1. Mobiles set path to "APRS v WIDE1-1,WIDE2-2"
> >> >
> >> > 2. Home users set path to "APRS v WIDE3-3"
> >> >
> >
> > Bob Said
> >
> >> Boy was I wrong. I just zoomed on the first call I saw and found
> >> that even Adelade is probably just about optimally loaded and cannot
> >> afford much coming in from say Melbourne without having some impact
> >> on throughput. I see 50 stations within 50 miles of Adelade and that
> >> is about as high as you want to go without losing reliability for
> >> small trackers.
> >>
> >> Then I zoomed in on Melbourne and see that it is as dense as some of
> >> our highest density cities in the USA! We use WIDE2-2 in those
> >> areas... (see MAP on
> >> http://www.ew.usna.edu/~bruninga/aprs/fix14439.html
> >>
> >> Seeing these maps, I now am convinced that you are on the right track
> >> to implement the New-N paradigm measures to help improve the
> >> reliability of local area APRS. And since these population densities
> >> seem quite well focused with big gaps inbetween, then it does make
> >> sense to limit the WIDEn-N hops so that mobiles in one area are not
> >> QRMING long distances away to the other areas...
> >>
> >> Great work!
> >> Bob, Wb4APR
> >>
> >
> >
> > _______________________________________________
> > Ozaprs mailing list
> > Ozaprs at aprs.net.au
> > http://aprs.net.au/mailman/listinfo/ozaprs
> >
> >
> > --
> > No virus found in this incoming message.
> > Checked by AVG Free Edition.
> > Version: 7.1.409 / Virus Database: 268.13.32/523 - Release Date:
> > 11/7/2006
> >
> >
> _______________________________________________
> Ozaprs mailing list
> Ozaprs at aprs.net.au
> http://aprs.net.au/mailman/listinfo/ozaprs
>
>
> _______________________________________________
> Ozaprs mailing list
> Ozaprs at aprs.net.au
> http://aprs.net.au/mailman/listinfo/ozaprs
_______________________________________________
Ozaprs mailing list
Ozaprs at aprs.net.au
http://aprs.net.au/mailman/listinfo/ozaprs
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<TITLE>Re: [OZAPRS] European v USnewparadigmand pathlimiting =
+confusion....</TITLE>
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<P><FONT SIZE=3D2>Gday,</FONT>
</P>
<P><FONT SIZE=3D2>The idea to limit the number of digi hops in an area =
depends on the local area and its network configuration. In VK3 we have =
a good network with well established IGates so 2 hops works well to get =
your data to one or more IGates.</FONT></P>
<P><FONT SIZE=3D2>In other areas such as VK7 or VK4 this may not be the =
case and you may need 3 or 4 hops to get your data to the closest =
IGate.</FONT></P>
<P><FONT SIZE=3D2>However it is important you don=E2=80=99t use more =
digi hops than you really need to get your data to the closest =
IGate.</FONT>
</P>
<P><FONT SIZE=3D2>Remember though that if you need 3 hops to get to an =
IGate the chances are that your data will have a big impact on the =
over-all RF network traffic. This will have an effect on your =
neighbour.</FONT></P>
<P><FONT SIZE=3D2>From WB4APR's web pages....</FONT>
</P>
<P><FONT SIZE=3D2>WIDEn-n floods equally in ALL directions with dozens =
if not almost 100 copies of your transmitted data. We can not afford =
this QRM in our network. If each digi can hear 3 others, including the =
original here is the resulting number of Copies at each HOP:</FONT></P>
<P><FONT SIZE=3D2>This is if the original packet hit TWO digis at</FONT>
<BR><FONT SIZE=3D2>the beginning and each digi can hear 3 others.</FONT>
</P>
<P><FONT SIZE=3D2>SETTING 1st 2nd 3rd 4th =
5th 6th 7th TOTAL</FONT>
<BR><FONT SIZE=3D2>------- --- --- --- --- =
--- --- --- -----</FONT>
<BR><FONT SIZE=3D2>WIDE1-1 =
2 =
&=
nbsp; &n=
bsp; 2</FONT>
<BR><FONT SIZE=3D2>WIDE2-2 2 =
4 =
&=
nbsp; &n=
bsp; 6</FONT>
<BR><FONT SIZE=3D2>WIDE3-3 2 =
4 =
8 =
&=
nbsp; 14</FONT>
<BR><FONT SIZE=3D2>WIDE4-4 2 =
4 8 =
10  =
; =
24</FONT>
<BR><FONT SIZE=3D2>WIDE5-5 2 =
4 8 10 =
14  =
; 38</FONT>
<BR><FONT SIZE=3D2>WIDE6-6 2 =
4 8 10 14 =
16  =
; 54</FONT>
<BR><FONT SIZE=3D2>WIDE7-7 2 =
4 8 10 14 =
16 20 74</FONT>
<BR><FONT SIZE=3D2>=E2=80=A6=E2=80=A6=E2=80=A6.</FONT>
</P>
<P><FONT SIZE=3D2>Each state needs to decide the maximum number of hops =
required so that they can set a guide to configure consistent digipeater =
parameters.</FONT></P>
<P><FONT SIZE=3D2>Changing the subject slightly, I don=E2=80=99t think =
we should refer to digi hops as Wide2-2 or Wide3-3 etc as this becomes =
confused with the literal path settings.</FONT></P>
<P><FONT SIZE=3D2>Cheers</FONT>
<BR><FONT SIZE=3D2>Richard</FONT>
<BR><FONT SIZE=3D2>VK3JFK</FONT>
</P>
<BR>
<BR>
<P><FONT SIZE=3D2>---- vk7arn <vk7arn at bigpond.com> wrote: </FONT>
<BR><FONT SIZE=3D2>> Andrew</FONT>
<BR><FONT SIZE=3D2>> </FONT>
<BR><FONT SIZE=3D2>> Answer - depends. Are we talking:</FONT>
<BR><FONT SIZE=3D2>> </FONT>
<BR><FONT SIZE=3D2>> reaching an Igate reliably, or</FONT>
<BR><FONT SIZE=3D2>> reaching a reliable Igate</FONT>
<BR><FONT SIZE=3D2>> reaching a reliable digi which reaches a =
reliable Igate</FONT>
<BR><FONT SIZE=3D2>> </FONT>
<BR><FONT SIZE=3D2>> Current situation in Tas is (to the best of my =
knowledge) -</FONT>
<BR><FONT SIZE=3D2>> - The key digi RAA is off air due to a blown =
fuse (requires a bit of an</FONT>
<BR><FONT SIZE=3D2>> expedition to fix).</FONT>
<BR><FONT SIZE=3D2>> - The antenna on RAA which reliably reaches the =
south of Tas is in need of</FONT>
<BR><FONT SIZE=3D2>> attention by a qualified rigger (tower rules) so =
a temporary one is in use (when</FONT>
<BR><FONT SIZE=3D2>> the fuse is not blown) which rarely reaches the =
southern digis (propogation</FONT>
<BR><FONT SIZE=3D2>> dependant).</FONT>
<BR><FONT SIZE=3D2>> - There doesn't appear to be an Igate in the =
north east of Tas - depends on</FONT>
<BR><FONT SIZE=3D2>> north west Igate being fed by RAA in the north =
east.</FONT>
<BR><FONT SIZE=3D2>> - There was an Igate in the east of the north =
west but has been off for some</FONT>
<BR><FONT SIZE=3D2>> time, leaving a bit of a hole in the =
middle.</FONT>
<BR><FONT SIZE=3D2>> - There are still many areas in Tas which do not =
have affordable, dependable</FONT>
<BR><FONT SIZE=3D2>> broadband access.</FONT>
<BR><FONT SIZE=3D2>> - There are lots of big hills and deep valleys =
in Tas.</FONT>
<BR><FONT SIZE=3D2>> </FONT>
<BR><FONT SIZE=3D2>> There are some of us who would like to see whole =
of State coverage and are</FONT>
<BR><FONT SIZE=3D2>> working towards it. Dick VK7DIK's new digi =
at RWC on the West Coast, feeding</FONT>
<BR><FONT SIZE=3D2>> his Igate in the valley below has made a =
tremendous difference. Wide coverage</FONT>
<BR><FONT SIZE=3D2>> is going to need a variety of solutions, which =
may involve WIDE3-3</FONT>
<BR><FONT SIZE=3D2>> </FONT>
<BR><FONT SIZE=3D2>> What I'm saying is, for all sorts of reasons, in =
Tas at least, there needs to be</FONT>
<BR><FONT SIZE=3D2>> redundancy in the system.</FONT>
<BR><FONT SIZE=3D2>> </FONT>
<BR><FONT SIZE=3D2>> Why not have words to the effect that WIDE2-2 is =
the default, with a note that</FONT>
<BR><FONT SIZE=3D2>> special circumstances may dictate WIDE3-3, but =
this should only be applied</FONT>
<BR><FONT SIZE=3D2>> following consultation on requirements with the =
local System Operators (and try</FONT>
<BR><FONT SIZE=3D2>> to maintain a list of who they are?).</FONT>
<BR><FONT SIZE=3D2>> </FONT>
<BR><FONT SIZE=3D2>> To put things in a context, in April 2007 there =
will be several Amateurs in APRS</FONT>
<BR><FONT SIZE=3D2>> equipped cars driving round the state working as =
volunteer comms Officials on</FONT>
<BR><FONT SIZE=3D2>> Targa Tasmania. This provides a tremendous =
opportunity to challenge knowledge</FONT>
<BR><FONT SIZE=3D2>> and skills AND will provide a wonderful =
"spectator" event. Beats watching Fred</FONT>
<BR><FONT SIZE=3D2>> drive to work each morning and checking the =
temperature at Joe's place! Could</FONT>
<BR><FONT SIZE=3D2>> even supply a map with all the Targa stages =
marked!</FONT>
<BR><FONT SIZE=3D2>> </FONT>
<BR><FONT SIZE=3D2>> Cheers</FONT>
<BR><FONT SIZE=3D2>> </FONT>
<BR><FONT SIZE=3D2>> Roger vk7arn</FONT>
<BR><FONT SIZE=3D2>> </FONT>
<BR><FONT SIZE=3D2>> PS Maybe one of you aeronautical types =
would like to fly round Tassie for the</FONT>
<BR><FONT SIZE=3D2>> week with your airborne digi!</FONT>
<BR><FONT SIZE=3D2>> PPS I'm reliably informed that the article on =
APRS coverage of the Tasmanian</FONT>
<BR><FONT SIZE=3D2>> Safari heat of the Australian Rally chamionship =
will be in November's A.R. mag.</FONT>
<BR><FONT SIZE=3D2>> The interesting aspect is how we used the one =
frequency for voice and APRS.</FONT>
<BR><FONT SIZE=3D2>> </FONT>
<BR><FONT SIZE=3D2>> -----Original Message-----</FONT>
<BR><FONT SIZE=3D2>> From: ozaprs-bounces at aprs.net.au [<A =
HREF=3D"mailto:ozaprs-bounces at aprs.net.au">mailto:ozaprs-bounces at aprs.net=
.au</A>] On Behalf</FONT>
<BR><FONT SIZE=3D2>> Of Andrew McDade</FONT>
<BR><FONT SIZE=3D2>> Sent: Friday, 10 November 2006 08:38</FONT>
<BR><FONT SIZE=3D2>> To: Tony Hunt; VK / ZL APRS Users</FONT>
<BR><FONT SIZE=3D2>> Subject: Re: [OZAPRS] European v =
USnewparadigmand pathlimiting +confusion....</FONT>
<BR><FONT SIZE=3D2>> </FONT>
<BR><FONT SIZE=3D2>> </FONT>
<BR><FONT SIZE=3D2>> I guess the question we need to ask, is whether =
2 hops will allow ALL aprs </FONT>
<BR><FONT SIZE=3D2>> stations within Australia to reach an Igate =
reliably.</FONT>
<BR><FONT SIZE=3D2>> </FONT>
<BR><FONT SIZE=3D2>> If we have a situation where all stations =
can hit an Igate in 2 hops or </FONT>
<BR><FONT SIZE=3D2>> less then well and good, WIDE2-2 is definitely =
the way to go. But if there </FONT>
<BR><FONT SIZE=3D2>> are still some areas that require 3 hops to =
achieve this, then where are we </FONT>
<BR><FONT SIZE=3D2>> with regards to a standard, default, =
documentable, promotable Nation Wide </FONT>
<BR><FONT SIZE=3D2>> config for general APRS users.</FONT>
<BR><FONT SIZE=3D2>> </FONT>
<BR><FONT SIZE=3D2>> I would hate to see a situation where we've got =
different default configs </FONT>
<BR><FONT SIZE=3D2>> for different areas ie. WIDE2-2 for some areas =
and WIDE3-3 for others. I </FONT>
<BR><FONT SIZE=3D2>> think this would be a regressive step.</FONT>
<BR><FONT SIZE=3D2>> </FONT>
<BR><FONT SIZE=3D2>> So the question again , are there any areas =
within Australia that require 3 </FONT>
<BR><FONT SIZE=3D2>> ( or more ) hops to reliably access an Igate =
?</FONT>
<BR><FONT SIZE=3D2>> </FONT>
<BR><FONT SIZE=3D2>> Regards .. Andrew .. VK5EX</FONT>
<BR><FONT SIZE=3D2>> </FONT>
<BR><FONT SIZE=3D2>> </FONT>
<BR><FONT SIZE=3D2>> ----- Original Message ----- </FONT>
<BR><FONT SIZE=3D2>> From: "Tony Hunt" =
<wavetel at bigpond.com></FONT>
<BR><FONT SIZE=3D2>> To: <ozaprs at aprs.net.au></FONT>
<BR><FONT SIZE=3D2>> Sent: Thursday, November 09, 2006 8:12 PM</FONT>
<BR><FONT SIZE=3D2>> Subject: Re: [OZAPRS] European v =
USnewparadigmand pathlimiting </FONT>
<BR><FONT SIZE=3D2>> +confusion....</FONT>
<BR><FONT SIZE=3D2>> </FONT>
<BR><FONT SIZE=3D2>> </FONT>
<BR><FONT SIZE=3D2>> > Whats this idea I see of WIDE3-3 for home =
stations?? Currently we </FONT>
<BR><FONT SIZE=3D2>> > recomend and use predominantly WIDE2-2 in =
Adelaide .. If we use </FONT>
<BR><FONT SIZE=3D2>> > WIDE3-3 then we will cross the border to =
Mildura and Ouyen .. Is there </FONT>
<BR><FONT SIZE=3D2>> > any need for this many hops if all =
satations are within 2 hops of an </FONT>
<BR><FONT SIZE=3D2>> > Igate ?? WIDE3-3 will just increase the =
amount of traffic in our </FONT>
<BR><FONT SIZE=3D2>> > situation and likely insure alot of VK3 =
traffic right through to Pt </FONT>
<BR><FONT SIZE=3D2>> > Linclon instead of just the occasional bit =
here and there..</FONT>
<BR><FONT SIZE=3D2>> ></FONT>
<BR><FONT SIZE=3D2>> > Or are we going to recomend WIDE3-3 and =
then Trap the last hop in the</FONT>
<BR><FONT SIZE=3D2>> > digis</FONT>
<BR><FONT SIZE=3D2>> > which is one approach..</FONT>
<BR><FONT SIZE=3D2>> ></FONT>
<BR><FONT SIZE=3D2>> > Ive seen this WIDE3-3 mentioned a couple of =
times now and thought it </FONT>
<BR><FONT SIZE=3D2>> > must have been a typo at first ..</FONT>
<BR><FONT SIZE=3D2>> ></FONT>
<BR><FONT SIZE=3D2>> > Also 50 stations within 50miles of =
Adelaide.. I concur with Terry.. We</FONT>
<BR><FONT SIZE=3D2>> > must</FONT>
<BR><FONT SIZE=3D2>> > be on a different map or planet to Bob .. =
Our Igate shows about 15 locals</FONT>
<BR><FONT SIZE=3D2>> > presently which is about normal</FONT>
<BR><FONT SIZE=3D2>> > <A =
HREF=3D"http://121.44.67.103:14501/">http://121.44.67.103:14501/</A></FON=
T>
<BR><FONT SIZE=3D2>> > There are 23 VK5s currently listed on my =
Client here some of which are via</FONT>
<BR><FONT SIZE=3D2>> > the Igate and not on RF..</FONT>
<BR><FONT SIZE=3D2>> ></FONT>
<BR><FONT SIZE=3D2>> > There are about 40 listed here but about =
1/2 of them are over a day </FONT>
<BR><FONT SIZE=3D2>> > old</FONT>
<BR><FONT SIZE=3D2>> > with</FONT>
<BR><FONT SIZE=3D2>> > no recent posits.</FONT>
<BR><FONT SIZE=3D2>> > <A =
HREF=3D"http://www.findu.com/cgi-bin/find.cgi?vk5*">http://www.findu.com/=
cgi-bin/find.cgi?vk5*</A></FONT>
<BR><FONT SIZE=3D2>> ></FONT>
<BR><FONT SIZE=3D2>> > 50 Stations!! I gota to see that .. Talk =
about rush hour in Adelaide.. </FONT>
<BR><FONT SIZE=3D2>> > We are just an oversized country town here =
and pleased to be that </FONT>
<BR><FONT SIZE=3D2>> > way..</FONT>
<BR><FONT SIZE=3D2>> ></FONT>
<BR><FONT SIZE=3D2>> > Melbourne is the traffic worry on 2m APRS =
from what Ive experienced..</FONT>
<BR><FONT SIZE=3D2>> ></FONT>
<BR><FONT SIZE=3D2>> > Tony Hunt VK5AH</FONT>
<BR><FONT SIZE=3D2>> ></FONT>
<BR><FONT SIZE=3D2>> > ----- Original Message -----</FONT>
<BR><FONT SIZE=3D2>> >> Your thoughts Richard 3JFK too =
please.</FONT>
<BR><FONT SIZE=3D2>> >></FONT>
<BR><FONT SIZE=3D2>> >> Regards,</FONT>
<BR><FONT SIZE=3D2>> >> Ron</FONT>
<BR><FONT SIZE=3D2>> >></FONT>
<BR><FONT SIZE=3D2>> >> On Wed, 2006-11-08 at 11:06 +0800, =
Chris Hill wrote:</FONT>
<BR><FONT SIZE=3D2>> >> > Hi All,</FONT>
<BR><FONT SIZE=3D2>> >> ></FONT>
<BR><FONT SIZE=3D2>> >> > May I suggest the following =
"KISS" outcome for APRS in VK:</FONT>
<BR><FONT SIZE=3D2>> >> ></FONT>
<BR><FONT SIZE=3D2>> >> ></FONT>
<BR><FONT SIZE=3D2>> >> > 1. Mobiles set path to =
"APRS v WIDE1-1,WIDE2-2"</FONT>
<BR><FONT SIZE=3D2>> >> ></FONT>
<BR><FONT SIZE=3D2>> >> > 2. Home users set path to =
"APRS v WIDE3-3"</FONT>
<BR><FONT SIZE=3D2>> >> ></FONT>
<BR><FONT SIZE=3D2>> ></FONT>
<BR><FONT SIZE=3D2>> > Bob Said</FONT>
<BR><FONT SIZE=3D2>> ></FONT>
<BR><FONT SIZE=3D2>> >> Boy was I wrong. I just zoomed on =
the first call I saw and found </FONT>
<BR><FONT SIZE=3D2>> >> that even Adelade is probably just =
about optimally loaded and cannot </FONT>
<BR><FONT SIZE=3D2>> >> afford much coming in from say =
Melbourne without having some impact </FONT>
<BR><FONT SIZE=3D2>> >> on throughput. I see 50 stations =
within 50 miles of Adelade and that </FONT>
<BR><FONT SIZE=3D2>> >> is about as high as you want to go =
without losing reliability for </FONT>
<BR><FONT SIZE=3D2>> >> small trackers.</FONT>
<BR><FONT SIZE=3D2>> >></FONT>
<BR><FONT SIZE=3D2>> >> Then I zoomed in on Melbourne and see =
that it is as dense as some of </FONT>
<BR><FONT SIZE=3D2>> >> our highest density cities in the =
USA! We use WIDE2-2 in those </FONT>
<BR><FONT SIZE=3D2>> >> areas... (see MAP on </FONT>
<BR><FONT SIZE=3D2>> >> <A =
HREF=3D"http://www.ew.usna.edu/~bruninga/aprs/fix14439.html">http://www.e=
w.usna.edu/~bruninga/aprs/fix14439.html</A></FONT>
<BR><FONT SIZE=3D2>> >></FONT>
<BR><FONT SIZE=3D2>> >> Seeing these maps, I now am convinced =
that you are on the right track </FONT>
<BR><FONT SIZE=3D2>> >> to implement the New-N paradigm =
measures to help improve the </FONT>
<BR><FONT SIZE=3D2>> >> reliability of local area APRS. =
And since these population densities </FONT>
<BR><FONT SIZE=3D2>> >> seem quite well focused with big gaps =
inbetween, then it does make </FONT>
<BR><FONT SIZE=3D2>> >> sense to limit the WIDEn-N hops so that =
mobiles in one area are not </FONT>
<BR><FONT SIZE=3D2>> >> QRMING long distances away to the other =
areas...</FONT>
<BR><FONT SIZE=3D2>> >></FONT>
<BR><FONT SIZE=3D2>> >> Great work!</FONT>
<BR><FONT SIZE=3D2>> >> Bob, Wb4APR</FONT>
<BR><FONT SIZE=3D2>> >></FONT>
<BR><FONT SIZE=3D2>> ></FONT>
<BR><FONT SIZE=3D2>> ></FONT>
<BR><FONT SIZE=3D2>> > =
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<BR><FONT SIZE=3D2>> ></FONT>
<BR><FONT SIZE=3D2>> ></FONT>
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<BR><FONT SIZE=3D2>> > No virus found in this incoming =
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