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ZL3AI > APRDIG 09.08.03 10:12l 118 Lines 4464 Bytes #999 (0) @ WW
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Subj: TAPR Digest, Aug 06, 1/1
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From: ZL3AI@ZL3VML.#80.NZL.OC
To : APRDIG@WW
TAPR APRS Special Interest Group Digest for Wednesday, August 06, 2003.
1. EOSS 70 &71 balloon flights
2. Re: APRS AX.25 Packet Size
3. Re: wxsvr outlook statement posits
4. aprs2.net Update
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Subject: EOSS 70 &71 balloon flights
From: "Russ Chadwick" <russ@wxqa.com>
Date: Wed, 6 Aug 2003 04:25:49 -0000
X-Message-Number: 1
The EOSS 70 & 71 amateur balloon flights happened on Saturday morning with
launch from Deer Trail, Colorado, which is east of Denver. Both flights
were very successful, achieving altitudes near 100,000 ft. Both payloads
were recovered with only some modest damage to one APRS tracker. Complete
details of the flights (including trajectories, photos, and recordings of
the tracking and recovery net) are given here,
http://www.eoss.org/ansrecap/ar_100/recap7071.htm
APRS-IS provided the position information that was relayed through findu.com
to the FAA Air Traffic Controllers. Both balloons were flying under waivers
(the payloads exceeded six pounds), which means the positions must be
relayed to the FAA. The map of the I-Gate locations is here,
http://www.wxqa.com/IGmapCO.gif
Of the 13 demosats carried aloft, four had rovers that were to leave the
payloads after landing. Unfortunately, none were successful. On EOSS 70,
one rover release door did not open and the other rover hung up when it
tried to exit. On EOSS 71, one door was not closing properly prior to
launch, so the experimenters decided to latch the door so that it would not
open inadvertently at 100,000 feet (the rover could certainly get out then).
The other rover had software problems and it was decided to unplug the micro
so nothing could go wrong. There were problems and that's why these are
called experiments, sometimes they work and sometimes they don't.
Unfortunately there was a car accident when a vehicle, participating in the
recovery, rolled over on a dirt road. The driver, a JPL employee, sustained
a back injury, but will recover.
Russ KB0TVJ
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Subject: Re: APRS AX.25 Packet Size
From: Bob Bruninga <bruninga@usna.edu>
Date: Wed, 6 Aug 2003 07:15:02 -0400 (EDT)
X-Message-Number: 2
On Tue, 5 Aug 2003, Adi Linden wrote:
>What is the maximum packet size for a APRS AX.25 packet? Just wondering
>how large to make a data buffer to store packets to be received or
>transmitted.
A WinAPRS position packet...
----------------------------------------------------------------------
Subject: Re: wxsvr outlook statement posits
From: dale huguley <kg5qd@wxsvr.net>
Date: Wed, 06 Aug 2003 14:20:17 +0000
X-Message-Number: 3
Sean \The RIMBoy\ wrote:
>I was wondering if anyone knew what determines the posit for an outlook
>statement:
>
>http://www.findu.com/cgi-bin/find.cgi?call=OHX_OUTLK
>
>In our case, OHX_OUTLK statements are always posit'd at this position. Is
>this position determined by NWS, the wxsvr software, or something else? I
>can see where this might be the center of the OHX coverage area, which if
>that's the case that's fine. We're just curious to know if it's something
>automatically determined or something that posit'd data to that position
>from the NWS (either as a default (wxsvr) or from NWS).
It is the average of the centroids of the areas covered by the product.
73 de kg5qd Dale
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Subject: aprs2.net Update
From: "Phil Pacier, AD6NH" <ad6nh@arrl.net>
Date: Wed, 6 Aug 2003 15:7:26
X-Message-Number: 4
Hello all! Just a quick update on the APRS2 Tier 2 server network. It seems
that there was a DNS problem at the Knoxville server, so for the time being
the knoxville.aprs2.net domain will resolve to our newest Tier 2 server,
APRSIN at indiana.aprs2.net. This newest server offers the East US Feed on
port 14579, an Indiana state feed on 14578, and an Illinois state feed on
14576. Check out his stats page at http://indiana.aprs2.net:14501 for his
port information.
Also, work is in progress on the http://www.aprs2.net main site. There you
can find information on all five Tier 2 servers (in our network) and
information on ports. If you have any additional questions, please send me
an email! Enjoy -73
Phillip Pacier - AD6NH
socal.aprs2.net
http://www.aprs2.net
http://www.aprsca.net
---
END OF DIGEST
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