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<div class="moz-cite-prefix">I've not actually tested it, but
APRSISCE/32 should gracefully ignore any DF symbol that contains
improperly formatted data. The station should display with the
symbol, but without any of the extra visual features.<br>
<br>
And this is a timely message! I'm going to be at the Orlando
Hamcation tomorrow and they have a Foxhunt scheduled at 4:00pm.
I'm not sure if I'll participate in the actual hunt (having never
done one before), but maybe I'll see if the participants can give
me a copy of their reports after the fox is found and I can post
the DF objects showing their discoveries. I could even post the
different teams with different !shriek! qualifiers so that
APRSISCE/32 users can see them individually using the View /
Shrieks display filter.<br>
<br>
Probably won't get any objects on the map until Sunday sometime,
but it would be an interesting exercise (and possible debugging
aid for APRSISCE/32's implementation of DF support). And who
knows, maybe I'll hook the display into my upcoming APRSISMO
Android client sooner than later!<br>
<br>
Lynn (D) - KJ4ERJ - Author of APRSISCE for Windows Mobile and
Win32<br>
<br>
<br>
On 2/10/2017 10:50 AM, Robert Bruninga wrote:<br>
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<p class="MsoNormal"><span
style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1f497d">APRS
has a symbol for a DF report. “/\” and it is listed in the
symbol tables as a TRIANGLE (DF report).</span></p>
<p class="MsoNormal"><span
style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1f497d"> </span></p>
<p class="MsoNormal"><span
style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1f497d">Then
the APRS spec defines all kinds of data that can be included
in that report includgin Bearing, Quality, Hits, range
signal strength, in addition to the objects course and
speed, etc</span></p>
<p class="MsoNormal"><span
style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1f497d"> </span></p>
<p class="MsoNormal"><span
style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1f497d">Someone
asked for a DF or Foxhunting symbol. I suggested to use the
DF symbol… the question is, what will clients do with an
object using a DF symbol that does not then contain all the
DF report parameters… Does it try to make them into
gyberish, does it report a DF error?</span></p>
<p class="MsoNormal"><span
style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1f497d"> </span></p>
<p class="MsoNormal"><span
style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1f497d">Anyway,
just thought I wouild not the possible unknown-behavior when
a DF symbol is used and there is no data.</span></p>
<p class="MsoNormal"><span
style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1f497d"> </span></p>
<p class="MsoNormal"><span
style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1f497d">I
don’t see a need to do a FOX symbol, since no one should see
that until the end. Just use an X or something with the
name FOX.</span></p>
<p class="MsoNormal"><span
style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1f497d"> </span></p>
<p class="MsoNormal"><span
style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1f497d">I
thought that DFing would be the #2 application of APRS since
it could instantly triangulate and locate jammers and hidden
transmitters as a collective multi-user process. But people
seem to not use the event-object plotting of DF data much at
all.</span></p>
<p class="MsoNormal"><span
style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1f497d"> </span></p>
<p class="MsoNormal"><span
style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1f497d">Here
is the APRS DF-ing page: </span></p>
<p class="MsoNormal"><span
style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1f497d"><a
moz-do-not-send="true" href="http://aprs.org/dfing.html">http://aprs.org/dfing.html</a></span></p>
<p class="MsoNormal"><span
style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1f497d"> </span></p>
<p class="MsoNormal"><span
style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1f497d">And
the original APRSdos text file on DFing:</span></p>
<p class="MsoNormal"><span
style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1f497d"><a
moz-do-not-send="true"
href="http://aprs.org/APRS-docs/DF.TXT">http://aprs.org/APRS-docs/DF.TXT</a></span></p>
<p class="MsoNormal"><span
style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1f497d"> </span></p>
<p class="MsoNormal"><span
style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1f497d">Bob,
WB4APR</span></p>
<p class="MsoNormal"><span
style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1f497d"> </span></p>
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