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ZL3AI > APRDIG 28.05.03 10:04l 259 Lines 9082 Bytes #999 (0) @ WW
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Subj: TAPR Digest, May 25, 3/4
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From: ZL3AI@ZL3VML.#80.NZL.OC
To : APRDIG@WW
Subject: Re: weekend lawyer question
From: "Neil Lauritsen" <scout@gte.net>
Date: Sun, 25 May 2003 13:26:35 -0400
X-Message-Number: 22
Yes Bob is correct. Citizen Weather Observation Program wx stations are
re-transmitted from TCP/IP 24 hours 7 days a week out to the RF Stream not
just for Hurricanes but also for all weather reporting by these non-amateur
wx stations. See APRSWXNET info at the the following URL:
http://www-frd.fsl.noaa.gov/mesonet
We have 3 such stations in our county and are working to encourage more
non-amateurs as well as amateurs to put up additional wx stations.
Neil, W4NHL
Radio Officer, ACS
Pinellas County Florida
Emergency Management
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Subject: RE: Garmin Rhino?
From: Bob Bruninga <bruninga@usna.edu>
Date: Sun, 25 May 2003 13:53:08 -0400 (EDT)
X-Message-Number: 24
This pages shows the diffence between the rino 110 and 120. The 110 has
only 1 meg vs 8 meg of ram. and it has no vibrator nor voice scrambler.
About the only significant difference is under the "database or basemap"
category, it uses something called "city point" whereas the 120 uses the
"american highway and marine point" databases.
http://www.garmin.com/products/comparison.jsp?products=
010-00270-00&products=010-00270-02&banner=/graphics/marinePIC.jpg
But clearly the cheaper one is ideal for using as the central receiver
(until someone develops a PIC processor to receive the data), I wonder if
they can be had on ebay as people move up to the 120?
Can anyone who has played with one comment on the utility of the maps in
the rino 110?
Bob
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Subject: Remote WX TNC settings needed
From: cdapples <cdapples@cablemt.net>
Date: Sun, 25 May 2003 12:46:57 -0600
X-Message-Number: 26
Hi All,
I have an MFJ-1270C that I want to setup as a remote wx station with
am Ultimeter 2000, no computer.
I remeber back a couple of years ago there was a doc that listed the TNC
settings for such a setup, but am unable to llocate the file.
Could someone please send me the TNC settings?
--
Chris / KF7KN
+===============================+================================+
| Charles C. Dapples, Ph.D. | Red Lodge, Montana, USA |
+-------------------------------+--------------------------------+
| e-mail: cdapples@cablemt.net | Telephone: (406) 698-4989 |
+ or +--------------------------------+
| kf7kn@amsat.org | |
+-------------------------------+--------------------------------+
| Web page: http://www.wtp.net/~ccdapple/ |
+===============================+================================+
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Subject: RE: How cool is this? / eTrex
From: "AE5PL Lists" <HamLists@ametx.com>
Date: Sun, 25 May 2003 14:19:42 -0500
X-Message-Number: 29
I use the eTrex Legend with my D7A(G). I can't answer your question
about the Mapsource CD's, but I can help with setting it up to work with
the D7. First, you might want to make sure you are using the latest
firmware on the eTrex. Garmin posts updates on their website (current
is 3.2).
Configure the eTrex for NMEA In/Out (Interface Setup). Configure the D7
for NMEA GPS and Waypoints to 9 position NMEA. This last part will feed
received posits to the eTrex. You won't get symbols, but each posit
will be loaded as a waypoint with the callsign of the sending station as
the waypoint name.
Have fun.
73,
Pete Loveall AE5PL
pete@ae5pl.net
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Subject: Re: How cool is this? / eTrex
From: "Andrew Rich" <andrew.rich@bigpond.com>
Date: Mon, 26 May 2003 05:51:59 +1000
X-Message-Number: 33
This is a great story !
Good on those girls and boys !
Andrew VK4TEC
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Subject: RE: My wandering car
From: "Dave Anderson" <dandersn@citicom.com>
Date: Sun, 25 May 2003 16:03:13 -0400
X-Message-Number: 34
>As far as I know, the car was unmanned at that time, so I
>think this must
>have been something fooling the GPS, a Tripmate, into thinking that it
>was changing position. Is that a regular occurrence? Too few
>satellites in
>view, or some other marginal condition?
I'm using a Deluo/EverMore GM-305 - http://www.deluo.com on my laptop w/
UI-View.
I have left it on accidently overnight as well, seeing the same thing occur.
Generally the reciever has full sky viewing, with 7-8 satellites tracking
when it does it.
Bob Bruninga, WB4APR, has a webpage showing similar he's seen:
http://web.usna.navy.mil/~bruninga/errorplot.html
I'm not sure if this page reflects SA or not.
I've also been curious myself as if a WAAS enabled GPS reciever would see
this as bad.
73 de Dave
KG4YZY
www.aprsfl.net
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Subject: Re: "Gap Filler" digipeaters
From: Henk de Groot <henk.de.groot@hetnet.nl>
Date: Sun, 25 May 2003 21:39:21 +0200
X-Message-Number: 36
Hello Joseph,
At 16:42 22-5-03 -0400, Joseph C. Bender wrote:
>Say I've got a 5-10 watt transmitter with an antenna setup that can "hear"
>most stations within a 20 mile radius. Say I can reliably (> 90% of
>attempts) hit a WIDE that might be able to hear most of what I can hear,
>but low-powered mobiles or portables may not be able to get out in my
>immediate area. Add on top of that other fairly close RELAY capable
>stations that may or may not operate all the time, while my station would.
A RELAY will help low power stations to reach the wide, but maybe these
stations also want to receive data, e.g. messages.
In DIGI_NED I made (on request) a special fill-digi option for a situation
where you have to cover a black spot. Black spots can be found a lot, not
only in valleys, but also due to shading, a lot in cities. Stations in the
black spot can't hear and talk to the WIDE directly and are cut-off from
the outside world if nothing is done. The solution should give those users
full access both for transmission and reception of APRS data.
To solve this problem you have to setup a digipeater at a position both
covering the black spot and in sight of the WIDE. In DIGI_NED you can
create a so called "local" radio port. This port has some special
properties. The DIGI_NED digi will operate as digipeater to help the
stations in the black spot to get data in and out with minimal disturbance
on the surrounding area. It behaves as followes:
When a direct station is received by the digi then it will digipeat the
signal normally. The station is direct and therefore it is assumed the
station is inside the black spot. Via the digi the packet will reach the
WIDE and from ther the data is distributed the usual way.
If a station is received indirectly then it is assumed to be received from
the WIDE and only needs to be distributed inside the black spot area.
DIGI_NED then marks the full path as "used" and retransmits the packet. By
marking the full path as "used", no other digipeater will pick up this
signal and this way unwanted extra load is avoided. You can even make the
transmitter very low lower so only stations inside the black spot get
enough signal and RF disturbance to neighbouring stations outside the black
spot is minimized.
Advantage of all this is that it:
1) is Bi-directional, not like RELAY only outgoing but also provides
incoming traffic
2) does not require users to change their path while they drive through the
black spot, the fill-digi knows all the aliases
3) minimizes RF load since copies from the fill-digi will not be picked up
by neighbouring digipeaters unless the original packet came from a direct
station. This is a big advantage over using a normal digipeater to cover
the black spot.
Of course if you do not need any reception, a RELAY is the most
straightforward choice.
Kind regards,
Henk
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Subject: Re: My wandering car
From: Alex <kr1st@amsat.org>
Date: Tue, 20 May 2003 00:48:23 -0400
X-Message-Number: 37
owens@nysernet.org wrote:
>When I woke up this morning, I
>discovered that the tracker thought I'd gone for a short drive:
>As far as I know, the car was unmanned at that time
Womanned perhaps? You married?
73,
--Alex KR1ST (checking chains)
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