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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>
    </div>
    <blockquote
      cite="mid:5dd0bbf5cd8c7c8f51d9e9dacdad7138@mail.gmail.com"
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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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      <pre wrap="">_______________________________________________
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</pre>
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