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ZL3AI > APRDIG 29.11.03 10:47l 237 Lines 8764 Bytes #999 (0) @ WW
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Subj: TAPR Digest, Nov 25, 1/1
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From: ZL3AI@ZL3VML.#80.NZL.OC
To : APRDIG@WW
TAPR APRS Special Interest Group Digest for Tuesday, November 25, 2003.
1. Re: NWS Warnings
2. VI8NT ON APRS
3. Re: [CA APRS] Re: FW: lost balloon Sun morning 23Nov
4. Re: Single digit SSID's preferred
5. Re: Freequency Coordinating Bodies - .POS files
6. Digitraveler altitude limit?
7. Re: Digitraveler altitude limit?
8. ITX motherboard
9. Slightly OT: Good source for *lots* of Gel-Cells?
10. RE: Slightly OT: Good source for *lots* of Gel-Cells?
11. Re: Slightly OT: Good source for *lots* of Gel-Cells?
12. Re: Slightly OT: Good source for *lots* of Gel-Cells?
13. Re: Slightly OT: Good source for *lots* of Gel-Cells?
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Subject: Re: NWS Warnings
From: "Dick Stanich" <dick@kb7zva.com>
Date: Tue, 25 Nov 2003 0:8:57
X-Message-Number: 1
On 11/24/03, ""Jack R. Smith" <jack.smith2@us.army.mil>" wrote:
>I'm not getting any warnings over the APRS-IS feed for most of MS.
>Specifically from NWS-MEG or NWS-JAN. All of MS is under freeze warning,
>posted at 21:46 local, but I haven't gotten anything over the feed for this.
>Getting for AR, AL and LA, though. Is there some problem?
>
>Jack KE4LWT
You are connected to THIRD.APRS.NET port 14580 with the following filter
settings s/Y@s/@ft t/n r/34/‑84/1000
Not sure if your arguement for symbols is correct. The freeze warnings are
being seen on APRSWEST.NET. The following object is showing up on my feed:
MEGNPW>APRS,qAO,WXSVR:
;MEGN0258z*251000z3409.00NN08942.00WWCenter FREEZE {P2wAA
And when I finger it Ui-View, this is what I get:
WWUS74 KMEG 250258
NPWMEM
URGENT - WEATHER MESSAGE
NATIONAL WEATHER SERVICE MEMPHIS TN
855 PM CST MON NOV 24 2003
..CANADIAN HIGH PRESSURE WILL BRING A WIDESPREAD FREEZE TO THE
MIDSOUTH BY TUESDAY MORNING.
ARZ058-MSZ010>017-020>024-251000-
CALHOUN-CHICKASAW-COAHOMA-ITAWAMBA-LAFAYETTE-LEE(MS)-MONROE-PANOLA-
PHILLIPS-PONTOTOC-QUITMAN-TALLAHATCHIE-UNION-YALOBUSHA-
855 PM CST MON NOV 24 2003
....FREEZE WARNING IN EFFECT TONIGHT...
CLEAR SKIES AND LIGHT WINDS WILL ALLOW TEMPERATURES TO FALL INTO THE
MIDDLE AND UPPER 20S OVERNIGHT. TEMPERATURES WILL REMAIN BELOW
FREEZING FOR ABOUT 6 HOURS. THIS WILL LIKELY DAMAGE TENDER
VEGETATION LEFT OUTDOORS.
STAY TUNED TO NOAA WEATHER RADIO AND OTHER LOCAL MEDIA FOR FURTHER
DETAILS OR UPDATES.
Might try a different server and see if it works.
Dick, KB7ZVA
APRSWest
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Subject: VI8NT ON APRS
From: "vk8nsb amateur" <vk8group@hotmail.com>
Date: Tue, 25 Nov 2003 21:13:02 +0930
X-Message-Number: 2
Hello , Just wish to let all APRS users know that VI8NT the Special Event
Callsign for the Northern Territory of Australia is on Air until the 1st Dec
2003 on APRS . For more info send ? to VI8NT on APRS .. QSL is via Buro or
Direct to VK6NE .. More info about the station is at www.qrz.com search
for VI8NT ...
73,s and GL working VI8NT on APRS .... Stuart VK8NSB
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Subject: Re: [CA APRS] Re: FW: lost balloon Sun morning 23Nov
From: Bob Bruninga <bruninga@usna.edu>
Date: Tue, 25 Nov 2003 08:03:51 -0500 (EST)
X-Message-Number: 3
On Mon, 24 Nov 2003, Scott Fraser wrote:
>>The only time you need a digi is once it is on the ground.
>
>Bob, What if some smarts were added to the controller and it examined
>the altitude. Above XX feet, it used WIDE and below XX feet it would
>switch to a setting that could reach an Igate.
What I did on my balloon was hang the payload on a switch and hang the
batteries below the payload on another switch. This gave me four states:
1) Flying normally, (Both switches closed)
2) Hanging in a tree (Top switch closed, bottom one open)
3) hanging upside down (bottom switch closed, top one open)
4) Laying in a field (both switches open)..
It landed in water and died instantly... was only found by someone
stumbling on it and reading the label..
Bob, WB4APR
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Subject: Re: Single digit SSID's preferred
From: Byron Smith <wa6ylb@theworks.com>
Date: Tue, 25 Nov 2003 07:17:59 -0800
X-Message-Number: 4
However, the fact that the Kenwoods & APRSdos also sends the useless "-"
between the callsign and the SSID uses up a waypoint character position. I
suspect that hams can tell the difference if the "-" isn't there. I
reported this to Bob B long ago.
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Subject: Re: Freequency Coordinating Bodies - .POS files
From: Bill Vodall - WA7NWP <wa7nwp@jnos.org>
Date: Tue, 25 Nov 2003 09:57:49 -0800 (PST)
X-Message-Number: 5
>Bill, did you ever finish this?
>
>>Having the "useful" repeaters freely available as an APRS overlay is a
>>great thing. It's nice to see, when on a road trip, just where
>>the activity is in a new area. Creating a .POS file is easy, a bit
>>relaxing and even fun. Exact locations aren't needed. The main
>>town served is good enough.
Never did get a nice web page for folks to enter items and/or objects for a
.POS file database.
I think the first thing that's going to happen is building up a nice
transparent interface between some Wiki files (group editable webpages) and
the .pos files. Something like I did with the hot springs page only it has
to be automated and the resulting .pos file available both for use on the
web and downloading by users.
http://www.findewe.com/nwaprs/HotSprings
Another thought is that a global database of .pos file objects could be
created/modified from APRS object postings.
Somebody driving in the middle of Wyoming could stumble on a friendly,
open, repeater and then generate and transmit a simple object/item that
would add to the database. Later on folks could either query the database
by APRS or extract .POS files for specific regions or objects.
So much time - so many more projects.
73
Bill
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Subject: Digitraveler altitude limit?
From: "Scott Miller" <scott@opentrac.org>
Date: Tue, 25 Nov 2003 10:18:00 -0800
X-Message-Number: 6
Ok, I know someone's got a listing someplace of what GPS units have trouble
with altitudes greater than 64,000 feet, but I can't find it. Can someone
send me a link? Or at least tell me if the DigiTraveler works to at least
100,000 feet?
Scott
N1VG
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Subject: Re: Digitraveler altitude limit?
From: "J. Lance Cotton" <joe@lightningflash.net>
Date: Tue, 25 Nov 2003 13:20:55 -0600
X-Message-Number: 7
According to the specs of the Sony GXB2000 GPS chip datasheet (this is the
engine of the Digitraveler) they lay out the format of the NMEA data, which
specifies 4 digits for altitude, the largest being the 1000's digit.
Is this an NMEA limit, or just what the Sony chip sets? It would mean the
max altitude would be 9999 meters or about 32000 feet
--
J. Lance Cotton, KJ5O
http://map.findu.com/kj5o-14
joe@lightningflash.net
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Subject: ITX motherboard
From: Wes Johnston <wes@johnston.net>
Date: Tue, 25 Nov 2003 18:11:18 -0500
X-Message-Number: 8
I'm working on a 12v PC made with
http://www.axiontech.com/prdt.php?item=34633 's case. The motherboard is
an EDEN 500mhz ITX motherboard which boots off a compact flash card. This
will become a sound card TNC/ digined / aprsd igate.
That said, I've plugged my handy dandy west mountain radio watt hour meter
into this critter and have it running off my shack 12v supply. It draws
..6amp with no HDD attached (ie the compact flash adapter), and .9
amps when booting with a 3.5" HDD. Idle state is .7amp with the HDD. It
is important to note here that the 12v output of this supply is NOT
regulated. My bench supply puts out 14.2 v and the motherboard health page
shows 14.2, not 12v as I would have expected. This is worry some if you
plan to use this in a car with voltage spikes. Probably best if you want
to run this one in a car, you need to realize that any spikes from starting
the car will go straight to your HDD's. Run a 12v regulator if you are
smart. Since the unit draws max of one amp in my configuration, a simple
7812 would work with a heat sink - or one of those fancy 12v switch mode
regulators which looks like a large 7812. It also draws 100ma when off.
By the way, this makes a really slick MP3 player for your surround sound
system - it has svideo /TV out built right in.
Wes
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