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ZL3AI > APRDIG 12.05.07 02:18l 250 Lines 9632 Bytes #999 (0) @ WW
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Subj: [APRSSIG] Vol 35 #1, 2/3
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From: ZL3AI@ZL2BAU.#79.NZL.OC
To : APRDIG@WW
Message: 9
Date: Tue, 1 May 2007 11:22:21 -0400
From: "Robert Bruninga" <bruninga_at_usna.edu>
Subject: RE: [aprssig] APRS units needed for Race June 3rd
>We have a half iron man race coming up in Macon, GA on June 3rd....
I'm curious. Last week we learned that many of the digipeaters in the
Atlanta Area have never been updated to the New-N Paradigm settings. I
wonder if that reaches down into Macon? A two-to-5-times improvement in on
air reliability is really worth making the change.
Bob, Wb4APR
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Message: 10
Date: Tue, 1 May 2007 11:27:04 -0400
From: "Robert Bruninga" <bruninga_at_usna.edu>
Subject: RE: [aprssig] Objects on APRS
The way it is supposed to work (I think) is that the IRLP and the ECHO link
"systems" centrally put out objects into the APRS-IS. From there, any
local Igate is supposed to know those IRLP's and ECHO link nodes in their
immediate area and put them in the special gate-to-RF list. If this is
not how it is working, can someone summarize it for all of us? Thanks Bob
>-----Original Message-----
>
>One thing that can be an option though is to contact your nearby iGate
>operator and request that they push the posit out for you.
>
>Here in the Palm Springs, CA area, my iGate (K6KIT-11) watches for the
>IRLP3180 (AK6E-15) and pushes it out via a single hop through the local
>digi (INDIO).
>
>Eric J. Goforth, N6GOF
>www.APRSDEPOT.com
>
>-----Original Message-----
>
>Hi Guys,
>
>I would like to remind everyone that IRLP, Voice Repeater, Etc. Objects that
>are put on an APRS Gateway node are great. But to put them out when your
>only connection is to the APRS-IS system is counter productive. I have been
>noticing a few in the northwest have been doing this, thinking an Igate
>will pick them up and put them out.
>
>Hope everyone has fun at Dayton.
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Message: 11
Date: Tue, 01 May 2007 10:40:19 -0500
From: "Robbie, wa9inf" <mwrobertson_at_comcast.net>
Subject: [aprssig] Symbols
What is the actual purpose of the Sky Warn, (Tornado), symbol? My thoughts
would be to used it to spot a Tornado.
Is it to be used by a Trained Certified or other observer to note his
House/Station, is it to be used to report a Tornado by said spotter, or
just to be used to let the network know the station is owned by a certified
Sky Warn spotter?
Seems to serve no purpose when used instead of a house/station symbol!
Robbie
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Message: 12
Date: Tue, 1 May 2007 08:43:12 -0700 (PDT)
From: "Curt, WE7U" <archer_at_eskimo.com>
Subject: Re: [aprssig] What settings for igate?
On Sun, 29 Apr 2007, Greg D. wrote:
>there are three options in the next frame down
>that are currently not checked:
>- Transmit compressed objects/items
>- Activate Alternate Net
>- Disable posit dupe-check
>I assume I leave them off?
The first option will change your _own_ transmitted objects to Base-91
Compressed format, instead of Standard APRS non-compressed format. Your
choice on that one.
Don't activate "Alternate Net" unless you want to only see people that are
also using that same Net. This is mostly for events or other instances
where a group of people want to interoperate yet get rid of other
stations/objects off their map.
The third will drop any duplicate packets received so that tracklines don't
do weird reversals on you. This is mostly for when you have an digi in
your area that is holding packets for a while so that tracklines start
doing weird things on your maps.
>There is also a field for typing in a string, but it's not labeled.
>What goes there? Currently is says "XASTIR".
That's for the ALTNET setting. If you change it to "APX" temporarily and
then turn on ALTNET, you'll see how many Xastir stations are in your area.
Remember to turn off ALTNET when done playing.
>>You might want to gate in both directions, as this then helps people
>>to use APRS messaging.
>I guess I'm skeptical about how much value this would have, since I
>live in a bit of a hole. We're by a creek, so by definition I have hills
>on two sides. The antenna currently is a twin lead Jpole hanging
>on the wall in the shack, on the first floor of the house. Height above
>ground is maybe 8', depending on where you measure to. Height
>above the street level is about zero (the lot slopes down). Power is
>5 watts. There is a good digi and igate 21.3 miles from here (K6FGA-1)
>on Banner Mt. Fortunately, it is down stream, so I can hit it reliably.
>Is adding my little 5w station to the RF clutter a benefit or just more
>QRM?
Probably more QRM. I'd just gate to the internet then in that case.
>I guess the program knows where on the Internet to aim the traffic,
>as I see no place to configure it.
You have to create an internet server interface and connect up
somewhere.
>One more question: A number of the postings related to old vs new
>addressing (wide vs wide n-n) talk about needing to upgrade the
>hardware (TNC, presumably). Is my MFJ TNC ok, needing new
>software, or does this even matter when using XASTIR?
Doesn't matter in your case. If you're running APRS software and/or not
running as a digi, you can use old hardware just fine.
You do want to use the new paradism paths though. WIDE2-2 or
WIDE1-1,WIDE2-1 are the usual recommendations. You can also put in
specific digipeaters if you have one best path away from your house.
--
Curt, WE7U. APRS Client Comparisons: http://www.eskimo.com/~archer
"Lotto: A tax on people who are bad at math." -- unknown
"Windows: Microsoft's tax on computer illiterates." -- WE7U
"The world DOES revolve around me: I picked the coordinate system!"
------------------------------
Message: 13
Date: Tue, 1 May 2007 11:46:45 -0400
From: "Robert Bruninga" <bruninga_at_usna.edu>
Subject: RE: [aprssig] What settings for igate?
>>Currently I am only transmitting my fixed position
>>once/hr, with a "house" icon.
There are two standard net-cycle time expectations for APRS. That is every
10 minutes for local direct or 1 hop activities, special events and
real-time things going on with real people actually monitoiring. The
second is once every 30 minutes for the larger area (2 hops). If you are
beaconing less often, then it may appear that your station is inactive.
>I have hills on two sides. The antenna currently is a twin
>lead Jpole hanging on the wall in the shack, on the first
>floor of the house. Height above the street level is about
>zero (the lot slopes down). Power is 5 watts. There is a
>good digi and igate 21.3 miles from here (K6FGA-1)
>on Banner Mt.
If your valley has even one highway running through it, you station/igate
could be the only source for a good position or message packet from a
traveler going through the area. But just putting your antenna up on the
roof and outside should pick up 10 dB or more.
>A number of the postings related to old vs new addressing
>(wide vs wide n-n) talk about needing to upgrade the
>hardware (TNC, presumably).
Only applies to stand-alone digipeaters. Has nothing to do with home
stations.
Bob, WB4APR
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Message: 14
Date: Tue, 1 May 2007 11:55:49 -0400
From: "Robert Bruninga" <bruninga_at_usna.edu>
Subject: RE: [aprssig] APRS Coverage in Key West
>How would switching to WIDEN-n (assuming equipment
>supports it) or using WIDE1-1 as a digi alias on
>all the digis (and WIDE1-1,WIDE1-1,WIDE1-1,WIDE1-1
>on the WX station(s)) compromise the primary purpose?
Yes, the New-N paradigm evolved through several iterations until just about
evertyhing was resolved. The use of WIDE1-1 in place of WIDE was like the
last element of the puzzle, because it allowed even the oldest hardware to
be used under the New-N system without requiring any hardware upgrade. Any
old TAPR-2 clone TNC that is currently running a MYALIAS of WIDE or of
RELAY can be changed a MYALIAS of WIDE1-1 and be minimally compliant with
the New-N Paradigm.
And as you point out, it does not degrade existing use, but does add at
least one-hop capability to visitors. Though it is much easier to kibitz
than to actually go out to each remote station and physically make the
change, since these TNC's do not have remote-sysop functions either...
Bob
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Message: 15
Date: Tue, 1 May 2007 12:03:49 -0400
From: "Robert Bruninga" <bruninga_at_usna.edu>
Subject: RE: [aprssig] Weather Alert Network on APRS
>So here's the setup. A local I-Gate is setup to
>gate out weather bulletins... from our local NWS
>office.... We ATTEMPTED to get the sysops of our
>digipeaters to add "WXMHX"... into their UIDIGI
>field to create our own weather network, thus
>preventing this information from going to far
>and making sure that it gets to where it needs to get.
I think that is an excellent use of the UIDIGI parameters. Now that most
areas are upgraded to the New-N paradigm, more of the four UIDIGI settings
are available for this use. But to make it work most efficiently, I would
think that the originating Igate would want to make sure the path does
include multiple broadcast hops. SO therefore it should probably use a
discrete path to the digi that is most central to the area, and then a
single WXMHX beyond that as in DIGI1,WXMHX. Would that work?
Because using multiple hop WXMHX,WXMHX hops has the same RELAY,WIDE dupe
problem we are trying to avoid. But proper choices can minimize QRM and
maximize the coverage. The problem is the large number of set-and-forget
digipeaters out there...
Bob, WB4APR
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