| |
ZL3AI > APRDIG 06.04.07 00:23l 185 Lines 6008 Bytes #999 (0) @ WW
BID : 10011-ZL3AI
Read: GUEST
Subj: [APRSSIG] Vol 34 #3, 1/1
Path: DB0FHN<DB0FOR<DB0SIF<DB0KH<DB0EAM<DB0SMG<DB0RES<ON4HU<F5GOV<F4BWT<
IW2OAZ<ZL2BAU
Sent: 070405/2314Z @:ZL2BAU.#79.NZL.OC #:41491 [Waimate] $:10011-ZL3AI
From: ZL3AI@ZL2BAU.#79.NZL.OC
To : APRDIG@WW
Today's Topics:
1. Re: KC8UCH balloon over western PA right now, reaching NE Maryland by
10am (Eric Christensen)
2. RE: KC8UCH balloon over western PA right now, reaching NE Maryland by
10am (Robert Bruninga)
3. Re: KC8UCH balloon over western PA right now, reaching NE Maryland by
10am (jdw_at_eng.uah.edu)
4. APRS WX question... (Eric Weber)
5. Re: APRS WX question... (Ben Lindner)
6. RE: APRS WX question... ('Scott Miller')
----------------------------------------------------------------------
Message: 1
Date: Mon, 02 Apr 2007 15:24:27 -0400
From: Eric Christensen <eric_at_christensenplace.us>
Subject: Re: [aprssig] KC8UCH balloon over western PA right now,
reaching NE Maryland by 10am
How about by speed. If the speed goes to zero then you are probably on
the ground.
Eric W4OTN
Gregg Wonderly wrote:
>Wes Johnston, AI4PX wrote:
>>Since most trackers only have two mode, maybe a way to shut off the
>>GPS would be via impact sensor of some sort. Modes 1 and 3 are very
>>similar, maybe there's room here for a compromise that would allow
>>this idea to work with only two modes?
>
>Depending on density of air, the deployment of the parachute might
>create an "impact", so be careful about how this happens. I'd say turn
>it off based on altitude changes. If the altitude doesn't change by
>more than XXX feet between reports, you are down on the ground.
>
>Gregg Wonderly
------------------------------
Message: 2
Date: Mon, 2 Apr 2007 16:14:22 -0400
From: "Robert Bruninga" <bruninga_at_usna.edu>
Subject: RE: [aprssig] KC8UCH balloon over western PA right now,
reaching NE Maryland by 10am
>How about by speed. If the speed goes to zero then you
>are probably on the ground.
I like the altitude better. If increasing or constant, keep to the once
every 10 minute turn-on-fix-update-shutdown to save battery power. But,
each time you turn on and get a lesser altitude than before, then leave GPS
running. This algorithm works fine too when it hits the ground and the
altitude is no longer changing. Then it goes back to every 10 minute
update for 5 times the battery life. And can even trcak it if someone
carries it away... Bob, WB4APR
>>>Since most trackers only have two mode, maybe a way to shut
>>>off the GPS would be via impact sensor of some sort.
>>I'd say turn it off based on altitude changes. If the altitude
>>doesn't change by more than XXX feet between reports, you are
>>down on the ground.
------------------------------
Message: 3
Date: Mon, 2 Apr 2007 15:21:35 -0500 (CDT)
From: jdw_at_eng.uah.edu
Subject: Re: [aprssig] KC8UCH balloon over western PA right now,
reaching NE Maryland by 10am
Eric Christensen wrote:
>How about by speed. If the speed goes to zero then you are probably on
>the ground.
Nope. speed over the ground gets pretty low sometimes, especially at peak
altitude. Not at all impossible for speed over the ground to be zero.
If speed _stays_ zero for a while, you're probably on the ground.
-Jason
kg4wsv
------------------------------
Message: 4
Date: Mon, 2 Apr 2007 17:21:22 -0700 (PDT)
From: Eric Weber <webmanou812_at_yahoo.com>
Subject: [aprssig] APRS WX question...
I've looked, and I only find partial info...
Is one of the Trackers...aka "Open" or "Tiny" or "WX" tracker systems
capable of sending info from a Davis Weather Wizard III wireless system?
The County EM got each of the rural fire dept's one of these, and some
don't have internet access, and I've been preachin' APRS and now they are
asking for... the cheapest/easiest way...
From what I've found...it doesn't look like there is a direct way to
interface them...yes we have the data/APRS "dongle"...
For right now, I am suggesting a TNC, computer, radio set up...
At first they wanted quick and easy...but I think they are warming up to
the "complete" setup above...anyway, just wanting to know if one of the
tracker's can decode Davis stuff, just in case they want to go the quick
and easy route...
Thanks gang...
73's
Eric
------------------------------
Message: 5
Date: Tue, 03 Apr 2007 10:56:44 +0930
From: Ben Lindner <vk5jfk_at_activ8.net.au>
Subject: Re: [aprssig] APRS WX question...
A TNC needs to put in "Transparent" mode. All you need then is radio and
TNC and it will work. I have this setup at my QTH and works flawlessly
Ben Lindner
VK5JFK
------------------------------
Message: 6
Date: Mon, 2 Apr 2007 18:35:33 -0700
From: "'Scott Miller'" <scott_at_opentrac.org>
Subject: RE: [aprssig] APRS WX question...
No for the 'open' variety, at least not yet. Got too many other things
going on at the moment to tackle that. I think the wxtrak might do it,
though.
Scott
N1VG
>-----Original Message-----
>From: aprssig-bounces_at_lists.tapr.org
>[mailto:aprssig-bounces_at_lists.tapr.org] On Behalf Of Eric Weber
>Sent: Monday, April 02, 2007 5:21 PM
>To: aprssig_at_lists.tapr.org
>Subject: [aprssig] APRS WX question...
>
>I've looked, and I only find partial info...
>
>Is one of the Trackers...aka "Open" or "Tiny" or "WX"
>tracker systems capable of sending info from a Davis
>Weather Wizard III wireless system?
>The County EM got each of the rural fire dept's one of
>these, and some don't have internet access, and I've
>been preachin' APRS and now they are asking for...
>the cheapest/easiest way...
>>From what I've found...it doesn't look like there is a
>direct way to interface them...yes we have the
>data/APRS "dongle"...
>
>For right now, I am suggesting a TNC, computer, radio
>set up...
>
>At first they wanted quick and easy...but I think they
>are warming up to the "complete" setup above...anyway,
>just wanting to know if one of the tracker's can
>decode Davis stuff, just in case they want to go the
>quick and easy route...
>Thanks gang...
>
>73's
>Eric
------------------------------
aprssig mailing list
aprssig_at_lists.tapr.org
https://lists.tapr.org/cgi-bin/mailman/listinfo/aprssig
End of aprssig Digest, Vol 34, Issue 3
Read previous mail | Read next mail
| |
