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ZL3AI > APRDIG 07.05.03 09:07l 237 Lines 9102 Bytes #999 (0) @ WW
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Subj: TAPR Digest, May 04, 2/3
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From: ZL3AI@ZL3VML.#80.NZL.OC
To : APRDIG@WW
Subject: Re: APRS Pager?
From: Bob Bruninga <bruninga@usna.edu>
Date: Sun, 4 May 2003 15:54:31 -0400 (EDT)
X-Message-Number: 10
Sir,
You addressed this flame to me so I will answer. APRS is a distributed
network for communicating instantly in real time to a large number of
people on frequency at the same time. It does tracking and bulletins and
special status very well. It does not do multi-line messaging very well
and should not be used as a method for passing bulk traffic,
point-to-point traffic or multi-hop routine traffic.
I have never and will never propose or support that APRS be used for
significant point-to-point messaging. It wont work well. HAMs need to
understand this and they also need to have networks in place for passing
bulk and distant point-to-point traffic. If they try to use APRS for this
purpose they will fail. And such failure is not due to any shortcoming of
APRS. It would be becuse they are using the wrong tool for the job.
Every APRS group that plans on doing real-time communications support
under stress should also exercise its people and its resources for passing
packet traffic on other frequencies and networks. Paging should
definately be on a different frequency and system. But that does not
preclude an interface from APRS for accepting a page message, and
transfering it over to the amateur packet paging channel where it belongs.
de WB4APR
On Fri, 2 May 2003, Frank Kostelac wrote:
>Is there some reason we can't use APRS for tracking? Use packet for the
>rest of this stuff. I read where you guys are trying to move all the
>packet stuff to APRS. Then I get calls from from folks all the time
>complaining that since there is no use on their packet DIGI they are
>taking it down off the hill. Quit it! Use APRS for tracking! Do
>messaging and pageing on packet which is where it belongs. imo
>
>Frank
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Subject: Re: APRS to Dayton
From: Bob Bruninga <bruninga@usna.edu>
Date: Sun, 4 May 2003 16:02:08 -0400 (EDT)
X-Message-Number: 12
On Fri, 2 May 2003, Dakota Summerhawk wrote about "PL100 Voice Alert on
the D7 and D700":
>Does the standard Kenwood read the data in CTCSS mode? I had thought
>about the setting the status text to "listening 144.390 PL 100.0" but
>was not sure that would work.
Yes APRS packet still works, but the CTCSS mutes the speaker so that you
dont hear anything, but still someone can call you DIRECT on 144.39 by
voice with PL-100 to establish voice contact. Then move to a simplex
channel or repeater.
>Does the standard for the rest of the nation include this?
We hope it is common knowledge. Its amazing that we had D7's and D700's
for 2 years before we thought of this fundamental but very powerful
technique
>I am working on my presentation for the ham com on the ins and outs of
>aprs and want to include as much info on the subject I can squeeze into
>45 minutes and still have the last 15 minutes for questions and answers.
>Dakota
Yes, spread the word. With CTCSS set to 100 on Band-A on the Kenwoods:
1) APRS packet still works
2) You wont hear anything out of the BAND-A speaker unless:
a) It is someone calling you on PL-100 by voice on 144.39
b) Another D7 or D700 is in SIMPLEX range. Then you will hear its
packets (1 burst once a minute maybe). Usually this is not a
problem, in fact, most of us think of it as a "radar" that lets
us konw we are in SIMPLEX range of another APRS mobile...(rare)
de WB4APR
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Subject: Re: Holes in coverage
From: Dave VanHorn <dvanhorn@cedar.net>
Date: Sun, 04 May 2003 15:08:45 -0500
X-Message-Number: 13
At 02:59 PM 5/4/2003 -0400, Wes Johnston wrote:
>http://www.findu.com/cgi-bin/breadcrumb.cgi?call=kd4rdb-14&geo=http://imscor
>poration.com/kd4rdb/southeast.geo&start=10000
>
>I just looked at my bread crumb trail for the past several months. I've
>been as far south as savannah ga, and west as far as I-75 under atlanta. I
>couldn't help but notice the big gap from just east of augusta and where I
>got off i-20 half way to atlanta. Also from Saint George SC south to the SC
>GA line.
I'm sitting in the middle of that hole right now :)
I know a guy locally who might be able to help.
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Subject: Re: APRS Pager?
From: Bob Bruninga <bruninga@usna.edu>
Date: Sun, 4 May 2003 16:19:22 -0400 (EDT)
X-Message-Number: 14
>I don't forsee the need in a lot of disaster situations
>where APRS would be needed. I do see the need for packet
>in every disaster situation, so I think there is a time and
>a place for each disipline.
Interesting comment. Let me comment. Every disaster or event I have
seen, the proponderance of "voice" traffic begins with "where is xxxxx".
What I think some people may missunderstand about APRS and PACKET is that
APRS is not intended at all to replace "packet" communications. It it
totaly different. APRS was intended to replace a lot of the REAL-TIME
*voice* traffic and to make it digital, error-free, and self-logging, and
widely distributable and displayed on a common situational display.
It has nothing to do with passing "message traffic". Messages in APRS are
for the operators to use as a back-channel to augment their management of
the tactical picture. It should not be use for and should not be planned
for passing "traffic". Such planning is doomed to not only fail to pass
traffic, but to also JAM the APRS system so that it also fails to keep the
real-time picture current.
Another common missunderstanding is that APRS is a "Vehicle Location"
system. This is also dead WRONG. That is a secondary result of providing
a tactical-REAL-TIME common situational display.
But too many systems have spun off such that we do not have a "common"
situational display, nor a common approach. Different "APRS" systems
display things differently, treat maps differently, dont even support the
common RANGE SCALE concept or other details so that different operators
can see the "same picture". These details are cruical to presenting
to ALL users, a common situational awareness, yet not common in most
programs.. I better not go on, I get
too upset...
de WB4APR, Bob
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Subject: Tiger maps in WinAPRS
From: "Jacob Tennant" <k8jwt@ntelos.net>
Date: Sun, 4 May 2003 17:29:35 -0400
X-Message-Number: 15
Is the TIGER maps option only available in the upcoming NEW 2.7.? version of
WinAPRS?
I was looking at the www.winaprs.com site today and downloaded all of the
needed files.
All I ever get is a unhandled exception box followed by a illegal operation
box and WinAPRS shuts down?
Jacob Tennant K8JWT
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Subject: Re: Tiger maps in WinAPRS
From: James Smith <k9apr@sbcglobal.net>
Date: Sun, 04 May 2003 16:37:17 -0500
X-Message-Number: 16
If you looked on the website close it shows 2.7.0 being released on May
1st that didn't happen... The tiger maps should work in 2.6 or below... :-)
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Subject: Re: D700 BBS
From: "Chris Rose" <kb8uih@arrl.net>
Date: Sun, 4 May 2003 18:06:50 -0400
X-Message-Number: 17
Hello,
I haven't seen many say that this has to be done externally with a computer
running terminal software connected to the db9 serial port. The D700 alone
won't do this.
Bob, is this what you were talking about?
Chris
KB8UIH
----- Original Message -----
From: "Bob Bruninga" <bruninga@usna.edu>
To: "TAPR APRS Special Interest Group" <aprssig@lists.tapr.org>
Sent: Friday, May 02, 2003 3:05 PM
Subject: [aprssig] Re: D700 BBS
>TO turn on the D700 BBS just send it the MBOD ON command and set the
>MYMCALL command to set the BBS mail callsign...
>
>Bob
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Subject: DeLorme Earthmate GPS
From: cdapples <cdapples@cablemt.net>
Date: Sun, 04 May 2003 18:53:38 -0600
X-Message-Number: 18
I was wondering if anyone has any experience with the DeLorme
Earthmate GPS unit ? Does it work with APRS? and if so which version?
--
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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