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ZL3AI > APRDIG 13.12.03 15:42l 255 Lines 9109 Bytes #999 (0) @ WW
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Subj: TAPR Digest, Dec 10, 1/2
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From: ZL3AI@ZL3VML.#80.NZL.OC
To : APRDIG@WW
TAPR APRS Special Interest Group Digest for Wednesday, December 10, 2003.
1. Re: d7a GPS Cable?
2. Mini-ITX computers
3. Re: Mini-ITX computers
4. Re: Mini-ITX computers
5. Re: Digitraveler altitude limit?
6. RE: Mini-ITX Mobile computers
7. Japan on APRS
8. Re: d7a GPS Cable?
9. Re: Japan on APRS
10. KPC3 and a Radio Shack HTX-212
11. Setting TOCALL in WinAPRS
12. Re: d7a GPS Cable?
13. Wx tracker code
14. RE: Wx tracker code
15. Tracker behavior with invalid GPS
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Subject: Re: d7a GPS Cable?
From: "Stephen H. Smith" <WA8LMF2@aol.com>
Date: Tue, 9 Dec 2003 22:35:09 -0800
X-Message-Number: 1
Frank - KG6JVE wrote on 12/9/2003, 3:35 PM:
>I'm looking for a few varieties of GPS cables for the Kenwood d7a. Does
>anyone sell good sturdy cables to connect directly from the d7a to the
>Garmin Etrex series?
NO
>Perhaps custom cables to connect directly from the d7a to various PDAs as
>well?
NO
I have bought 3-foot long cable assemblies with the 2.5MM stereo plug
molded onto one end, and flying leads on the other, from xxxxxxxx
xxxxxxxxxxx for about $2.50 each. These assemblies, available with
either straight or right-angle plugs, are made with a much thicker,
snagless, PVC-jacketed wire than the thin Walkman headphone wire
assembly that comes with the D700.
I then splice a cable that mates with the other device to one and cover
the splice with heatshink tubing. So far, I have 4 cables made this way
for the TH-D7:
o One with a female DB9 for connection to a PC serial port.
o One with a male DB9 for connecting to mouse-type GPS devices that
always come with a DB9 female plug.
o One with the RJ-connector that mates with the RS Digitraveller.
o One with the screwball flat serial port plug that mates with a
Jornada Pocket PC.
Finally I took one of the plastic housings used to hold two DB9s for
making null modems, gender changers, etc. I placed a male DB9 in one
end, a female DB9 on the other, wired pins 2 and 3 as crossover and 5
straight across. I then drilled a 1/8th-inch hole in the side of the
housing to bring in the loose-leads end of the molded miniplug cable
which is connected to pins 2, 3 and 5 at one end.
This creates a universal cable that can either: connect a GPS to
the TH-D7 GPS port (uses the male plug end "straight through") or
connect a TH-D7 PC port to a PC (uses the female end crossed-over
null-modem style).
Stephen H. Smith wa8lmf (at) aol.com
Home Page: http://wa8lmf.com
Ham Radio/Mobile SSTV page: http://members.aol.com/wa8lmf/ham
APRS Stuff
http://members.aol.com/wa8lmf/aprs
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Subject: Mini-ITX computers
From: "Joshua Gould" <kc8eqa@columbus.rr.com>
Date: Wed, 10 Dec 2003 02:51:09 -0500
X-Message-Number: 2
All,
Has any one ever looked at a Mini-ITX system for a mobile APRS setup,
The more I look at it, the more I like the idea. Check out the website
www.mini-itx.com. There are a couple of people that have put computers
in their cars for mobile audio and video. I think that we could make
use of this system type.
73
Josh Gould
KC8EQA/WPTZ627
EN80KA
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Subject: Re: Mini-ITX computers
From: wes@johnston.net
Date: Wed, 10 Dec 2003 06:07:09 -0500 (EST)
X-Message-Number: 3
Be aware that the 12v ATX power supply has NO regulation on the 12v line...
any spikes or surges on your car will go straight to your HDDs. Also, most
cars run at 14 to 16 volts and that is the voltage which will end up on the
HDDs too.... a simple 7812 in line will solve this.
Wes
ham callsign: kd4rdb
find me: http://wesvan.zapto.org
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Subject: Re: Mini-ITX computers
From: "Gerry Creager (N5JXS)" <gerry.creager@tamu.edu>
Date: Wed, 10 Dec 2003 08:16:26 -0600
X-Message-Number: 4
I've had one in my lab for the last 6 months, and I have had the same
thoughts. I suspect I'll go that way. One concern is termal, as they
have barely enough case fan for what they need. The Epia-M processor is
not power hungary, and doesn't waste a lot of heat, but they can get
pretty warm on exhaust air if they're really crunching.
gerry
--
Gerry Creager -- gerry.creager@tamu.edu
Network Engineering -- AATLT, Texas A&M University
Office: 979.458.4020 FAX: 979.847.8578
Cell: 979.229.5301 Pager: 979.228.0173
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Subject: Re: Digitraveler altitude limit?
From: "Rochte, Robert" <rrochte@gpacademy.org>
Date: Wed, 10 Dec 2003 09:15:13 -0500
X-Message-Number: 5
It just occurred to me this morning that I actually flew a Digitraveler on
my last solar tetroon. The tracker as a whole failed on that flight
(nothing was transmitted), but I did have valid GPS data in the KPC-3+
buffer after it landed.
No flight data was preserved (the 100k buffer was overwritten as it rode
around in the trunk of a sheriff's car), so I can't tell if it worked at
altitude -- but at a minimum it was working again by the time it hit the
ground.
I'll be flying one of these again on my next tetroon, currently scheduled to
fly this Friday (sunshine and wind permitting).
73,
Robert
KC8UCH
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Subject: RE: Mini-ITX Mobile computers
From: WB4GQK@aol.com
Date: Wed, 10 Dec 2003 10:19:52 EST
X-Message-Number: 6
Hi all,
I put a Mini ITX system together, 2 months ago using a EPIA mainboard,
fanless CPU, 18 GHDD, for the sole purpose of replacing a $1800 laptop that
I put on my sailboat whenever I go sailing. I permanently installed the ITX
in a locker under the nav station. I USED THE LAPTOP'S DC-DC CONNECTOR
CABLE! I felt this was simple and safe enough. I splurged and bought a 15"
flat panel TFT display that mounts on an arm which swings out into the
companionway and can be viewed from the cockpit steering station.
I took a sail from Tampa Bay down to Ft Myers using my Kam'98 and ICOM 800
marine SSB. I transmitted my posit, WB4GQK-2, every 10 minutes back to home
base WB4GQK-1. A number of friends on 30M connected with well wishes.
For this sail, I was operating only two programs on the ITX, THE CAP'N for
navigation with chart plotting and autopilot control, and Win APRS, running
in the background. I am working on integrating FOUR (4) programs. I am
adding to the above two, the virtual control program for the ICOM PCR1000
and the Xaxero Weatherfax 2000 soundcard program. Obviously the purpose
here is to obtain, fully automatic and unattended, upto date weather with
Navtex navigation information 24 hrs a day while underway. I have equipped
the ITX with 4 USB ports, one for GPS, one for Autopilot, one for KAM'98,
and one for PCR1000. Very fortunately nothing requires high speed
computation. The only noticeable slowdown is the seamless changing from one
electronic chart to the next.That's no big deal since no one should keep
their eyes glued to a computer screen while sailing.
Bottom line, I am extremely satisfied with my mobile ITX machine.
Jim wb4gqk
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Subject: Japan on APRS
From: Bob Bruninga <bruninga@usna.edu>
Date: Wed, 10 Dec 2003 20:05:24 -0500 (EST)
X-Message-Number: 7
I see Japanese on the APRS-IS now.
Is anyone converting their NAVITRA $PNTS formats to APRS and/or is
everyone's clients displaying them as is? Is there a gateway between
NAVITRA and APRS now?
Does any IGating either way conform to my proposed NAVITRA<==>APRS
interface spec? (last bullet on my APRS errata page)
http://www.ew.usna.edu/~bruninga/aprs/errata.html
de WB4APR@amsat.org, Bob
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Subject: Re: Japan on APRS
From: "Spider" <spider@rivcom.net>
Date: Wed, 10 Dec 2003 18:14:32 -0700
X-Message-Number: 9
From: "Bob Bruninga" <bruninga@usna.edu>
>I see Japanese on the APRS-IS now.
>
>Is anyone converting their NAVITRA $PNTS formats to APRS and/or is
>everyone's clients displaying them as is?
>Is there a gateway between NAVITRA and APRS now?
Bob,
UI-View:
There is a system used in Japan called NAVITRA that sends information in
$PNTS frames. UI-View32 understands the $PNTS posit frames, and can
optionally convert them to normal APRS format when they are gated. This
section allows you to say whether you want to convert them.
Convert PNTS Inet to RF - If this option is checked, then $PNTS posits will
be converted to APRS format as they are gated from the internet to RF.
Convert PNTS RF to Inet - If this option is checked, then $PNTS posits will
be converted to APRS format as they are gated from RF to the internet.
Jim, WA6OFT
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