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    <div class="moz-cite-prefix">Ordinarily I thought you ask for AP
      followed by 2 characters with 2 variables at the end, not three. 
      But...<br>
      <br>
      <a class="moz-txt-link-freetext" href="http://www.aprs.org/aprs11/tocalls.txt">http://www.aprs.org/aprs11/tocalls.txt</a> says:<br>
      <br>
      <blockquote type="cite">
        <pre> APN  APNxxx  Network nodes, digis, etc
      APN3xx  Kantronics KPC-3 rom versions
      APN9xx  Kantronics KPC-9612 Roms
      APNAxx  WB6ZSU's APRServe
      APNDxx  DIGI_NED
      APNK01  Kenwood D700 (APK101) type
      APNK80  KAM version 8.0
      APNKMP  KAM+
      APNMxx  MJF TNC roms
      APNPxx  Paccom TNC roms
      APNTxx  SV2AGW's TNT tnc as a digi
      APNUxx  UIdigi
      APNXxx  TNC-X  (K6DBG)
      APNWxx  SQ3FYK WX/Digi  <a class="moz-txt-link-freetext" href="http://sq3fyk.com/?page_id=391">http://sq3fyk.com/?page_id=391</a></pre>
      </blockquote>
      <blockquote type="cite">
        <pre> APU  APU1xx  UIview 16 bit applications
      APU2xx  UIview 32 bit apps
      APU3xx  UIview terminal program</pre>
      </blockquote>
      <br>
      In actual usage, APNxxx is pretty busy:<br>
      <br>
      <table border="">
        <tbody>
          <tr align="CENTER">
            <td align="RIGHT">[138]
            </td>
            <td align="CENTER">APN</td>
            <td align="CENTER">0</td>
            <td align="CENTER">1900</td>
          </tr>
          <tr align="CENTER">
            <td align="RIGHT">[139]
            </td>
            <td align="CENTER">APN001</td>
            <td align="CENTER">0</td>
            <td align="CENTER">279</td>
          </tr>
          <tr align="CENTER">
            <td align="RIGHT">[140]
            </td>
            <td align="CENTER">APN123</td>
            <td align="CENTER">0</td>
            <td align="CENTER">291</td>
          </tr>
          <tr align="CENTER">
            <td align="RIGHT">[141]
            </td>
            <td align="CENTER">APN232</td>
            <td align="CENTER">0</td>
            <td align="CENTER">42</td>
          </tr>
          <tr align="CENTER">
            <td align="RIGHT">[142]
            </td>
            <td align="CENTER">APN290</td>
            <td align="CENTER">0</td>
            <td align="CENTER">4</td>
          </tr>
          <tr align="CENTER">
            <td align="RIGHT">[143]
            </td>
            <td align="CENTER">APN313</td>
            <td align="CENTER">0</td>
            <td align="CENTER">1</td>
          </tr>
          <tr align="CENTER">
            <td align="RIGHT">[144]
            </td>
            <td align="CENTER">APN360</td>
            <td align="CENTER">0</td>
            <td align="CENTER">347</td>
          </tr>
          <tr align="CENTER">
            <td align="RIGHT">[145]
            </td>
            <td align="CENTER">APN370</td>
            <td align="CENTER">0</td>
            <td align="CENTER">637</td>
          </tr>
          <tr align="CENTER">
            <td align="RIGHT">[146]
            </td>
            <td align="CENTER">APN381</td>
            <td align="CENTER">0</td>
            <td align="CENTER">279</td>
          </tr>
          <tr align="CENTER">
            <td align="RIGHT">[147]
            </td>
            <td align="CENTER">APN382</td>
            <td align="CENTER">0</td>
            <td align="CENTER">147543</td>
          </tr>
          <tr align="CENTER">
            <td align="RIGHT">[148]
            </td>
            <td align="CENTER">APN383</td>
            <td align="CENTER">0</td>
            <td align="CENTER">121194</td>
          </tr>
          <tr align="CENTER">
            <td align="RIGHT">[149]
            </td>
            <td align="CENTER">APN383-9</td>
            <td align="CENTER">0</td>
            <td align="CENTER">1</td>
          </tr>
          <tr align="CENTER">
            <td align="RIGHT">[150]
            </td>
            <td align="CENTER">APN384</td>
            <td align="CENTER">0</td>
            <td align="CENTER">330</td>
          </tr>
          <tr align="CENTER">
            <td align="RIGHT">[151]
            </td>
            <td align="CENTER">APN390</td>
            <td align="CENTER">0</td>
            <td align="CENTER">29492</td>
          </tr>
          <tr align="CENTER">
            <td align="RIGHT">[152]
            </td>
            <td align="CENTER">APN391</td>
            <td align="CENTER">0</td>
            <td align="CENTER">219413</td>
          </tr>
          <tr align="CENTER">
            <td align="RIGHT">[153]
            </td>
            <td align="CENTER">APN392</td>
            <td align="CENTER">0</td>
            <td align="CENTER">2437</td>
          </tr>
          <tr align="CENTER">
            <td align="RIGHT">[154]
            </td>
            <td align="CENTER">APN393</td>
            <td align="CENTER">0</td>
            <td align="CENTER">934</td>
          </tr>
          <tr align="CENTER">
            <td align="RIGHT">[155]
            </td>
            <td align="CENTER">APN39L-9</td>
            <td align="CENTER">0</td>
            <td align="CENTER">1</td>
          </tr>
          <tr align="CENTER">
            <td align="RIGHT">[156]
            </td>
            <td align="CENTER">APN3DE</td>
            <td align="CENTER">0</td>
            <td align="CENTER">1</td>
          </tr>
          <tr align="CENTER">
            <td align="RIGHT">[157]
            </td>
            <td align="CENTER">APN3T1</td>
            <td align="CENTER">0</td>
            <td align="CENTER">1</td>
          </tr>
          <tr align="CENTER">
            <td align="RIGHT">[158]
            </td>
            <td align="CENTER">APN682</td>
            <td align="CENTER">0</td>
            <td align="CENTER">329</td>
          </tr>
          <tr align="CENTER">
            <td align="RIGHT">[159]
            </td>
            <td align="CENTER">APN700</td>
            <td align="CENTER">0</td>
            <td align="CENTER">540</td>
          </tr>
          <tr align="CENTER">
            <td align="RIGHT">[160]
            </td>
            <td align="CENTER">APN83</td>
            <td align="CENTER">0</td>
            <td align="CENTER">217</td>
          </tr>
          <tr align="CENTER">
            <td align="RIGHT">[161]
            </td>
            <td align="CENTER">APN832</td>
            <td align="CENTER">0</td>
            <td align="CENTER">109</td>
          </tr>
          <tr align="CENTER">
            <td align="RIGHT">[162]
            </td>
            <td align="CENTER">APN91</td>
            <td align="CENTER">0</td>
            <td align="CENTER">1328</td>
          </tr>
          <tr align="CENTER">
            <td align="RIGHT">[163]
            </td>
            <td align="CENTER">APN910</td>
            <td align="CENTER">0</td>
            <td align="CENTER">1319</td>
          </tr>
          <tr align="CENTER">
            <td align="RIGHT">[164]
            </td>
            <td align="CENTER">APN982</td>
            <td align="CENTER">0</td>
            <td align="CENTER">4863</td>
          </tr>
          <tr align="CENTER">
            <td align="RIGHT">[165]
            </td>
            <td align="CENTER">APN984</td>
            <td align="CENTER">0</td>
            <td align="CENTER">731</td>
          </tr>
          <tr align="CENTER">
            <td align="RIGHT">[166]
            </td>
            <td align="CENTER">APN990</td>
            <td align="CENTER">0</td>
            <td align="CENTER">964</td>
          </tr>
          <tr align="CENTER">
            <td align="RIGHT">[167]
            </td>
            <td align="CENTER">APN991</td>
            <td align="CENTER">0</td>
            <td align="CENTER">2858</td>
          </tr>
          <tr align="CENTER">
            <td align="RIGHT">[168]
            </td>
            <td align="CENTER">APNARM</td>
            <td align="CENTER">0</td>
            <td align="CENTER">476</td>
          </tr>
          <tr align="CENTER">
            <td align="RIGHT">[169]
            </td>
            <td align="CENTER">APND0U</td>
            <td align="CENTER">0</td>
            <td align="CENTER">167</td>
          </tr>
          <tr align="CENTER">
            <td align="RIGHT">[170]
            </td>
            <td align="CENTER">APND0X</td>
            <td align="CENTER">0</td>
            <td align="CENTER">3731</td>
          </tr>
          <tr align="CENTER">
            <td align="RIGHT">[171]
            </td>
            <td align="CENTER">APND0Z</td>
            <td align="CENTER">0</td>
            <td align="CENTER">990</td>
          </tr>
          <tr align="CENTER">
            <td align="RIGHT">[172]
            </td>
            <td align="CENTER">APND10</td>
            <td align="CENTER">0</td>
            <td align="CENTER">1865</td>
          </tr>
          <tr align="CENTER">
            <td align="RIGHT">[173]
            </td>
            <td align="CENTER">APND11</td>
            <td align="CENTER">0</td>
            <td align="CENTER">4143</td>
          </tr>
          <tr align="CENTER">
            <td align="RIGHT">[174]
            </td>
            <td align="CENTER">APND12</td>
            <td align="CENTER">0</td>
            <td align="CENTER">4</td>
          </tr>
          <tr align="CENTER">
            <td align="RIGHT">[175]
            </td>
            <td align="CENTER">APND13</td>
            <td align="CENTER">0</td>
            <td align="CENTER">4695</td>
          </tr>
          <tr align="CENTER">
            <td align="RIGHT">[176]
            </td>
            <td align="CENTER">APND14</td>
            <td align="CENTER">0</td>
            <td align="CENTER">2684</td>
          </tr>
          <tr align="CENTER">
            <td align="RIGHT">[177]
            </td>
            <td align="CENTER">APND34</td>
            <td align="CENTER">0</td>
            <td align="CENTER">204</td>
          </tr>
          <tr align="CENTER">
            <td align="RIGHT">[178]
            </td>
            <td align="CENTER">APNFOX</td>
            <td align="CENTER">0</td>
            <td align="CENTER">194</td>
          </tr>
          <tr align="CENTER">
            <td align="RIGHT">[179]
            </td>
            <td align="CENTER">APNI</td>
            <td align="CENTER">0</td>
            <td align="CENTER">1</td>
          </tr>
          <tr align="CENTER">
            <td align="RIGHT">[180]
            </td>
            <td align="CENTER">APNK01</td>
            <td align="CENTER">0</td>
            <td align="CENTER">304</td>
          </tr>
          <tr align="CENTER">
            <td align="RIGHT">[181]
            </td>
            <td align="CENTER">APNK82</td>
            <td align="CENTER">0</td>
            <td align="CENTER">171</td>
          </tr>
          <tr align="CENTER">
            <td align="RIGHT">[182]
            </td>
            <td align="CENTER">APNKMP</td>
            <td align="CENTER">0</td>
            <td align="CENTER">897</td>
          </tr>
          <tr align="CENTER">
            <td align="RIGHT">[183]
            </td>
            <td align="CENTER">APNP</td>
            <td align="CENTER">0</td>
            <td align="CENTER">118</td>
          </tr>
          <tr align="CENTER">
            <td align="RIGHT">[184]
            </td>
            <td align="CENTER">APNP20</td>
            <td align="CENTER">0</td>
            <td align="CENTER">285</td>
          </tr>
          <tr align="CENTER">
            <td align="RIGHT">[185]
            </td>
            <td align="CENTER">APNP50</td>
            <td align="CENTER">0</td>
            <td align="CENTER">3609</td>
          </tr>
          <tr align="CENTER">
            <td align="RIGHT">[186]
            </td>
            <td align="CENTER">APNP8C</td>
            <td align="CENTER">0</td>
            <td align="CENTER">1</td>
          </tr>
          <tr align="CENTER">
            <td align="RIGHT">[187]
            </td>
            <td align="CENTER">APNQ5N</td>
            <td align="CENTER">0</td>
            <td align="CENTER">1</td>
          </tr>
          <tr align="CENTER">
            <td align="RIGHT">[188]
            </td>
            <td align="CENTER">APNR91</td>
            <td align="CENTER">0</td>
            <td align="CENTER">1</td>
          </tr>
          <tr align="CENTER">
            <td align="RIGHT">[189]
            </td>
            <td align="CENTER">APNRCH</td>
            <td align="CENTER">0</td>
            <td align="CENTER">211</td>
          </tr>
          <tr align="CENTER">
            <td align="RIGHT">[190]
            </td>
            <td align="CENTER">APNTC2</td>
            <td align="CENTER">0</td>
            <td align="CENTER">154</td>
          </tr>
          <tr align="CENTER">
            <td align="RIGHT">[191]
            </td>
            <td align="CENTER">APNU-1</td>
            <td align="CENTER">0</td>
            <td align="CENTER">88</td>
          </tr>
          <tr align="CENTER">
            <td align="RIGHT">[192]
            </td>
            <td align="CENTER">APNU-X</td>
            <td align="CENTER">0</td>
            <td align="CENTER">600</td>
          </tr>
          <tr align="CENTER">
            <td align="RIGHT">[193]
            </td>
            <td align="CENTER">APNU12</td>
            <td align="CENTER">0</td>
            <td align="CENTER">919</td>
          </tr>
          <tr align="CENTER">
            <td align="RIGHT">[194]
            </td>
            <td align="CENTER">APNU18</td>
            <td align="CENTER">0</td>
            <td align="CENTER">4695</td>
          </tr>
          <tr align="CENTER">
            <td align="RIGHT">[195]
            </td>
            <td align="CENTER">APNU19</td>
            <td align="CENTER">0</td>
            <td align="CENTER">118089</td>
          </tr>
          <tr align="CENTER">
            <td align="RIGHT">[196]
            </td>
            <td align="CENTER">APNU19-1</td>
            <td align="CENTER">0</td>
            <td align="CENTER">77</td>
          </tr>
          <tr align="CENTER">
            <td align="RIGHT">[197]
            </td>
            <td align="CENTER">APNU19-2</td>
            <td align="CENTER">0</td>
            <td align="CENTER">160</td>
          </tr>
          <tr align="CENTER">
            <td align="RIGHT">[198]
            </td>
            <td align="CENTER">APNU19-3</td>
            <td align="CENTER">0</td>
            <td align="CENTER">11280</td>
          </tr>
          <tr align="CENTER">
            <td align="RIGHT">[199]
            </td>
            <td align="CENTER">APNU3B</td>
            <td align="CENTER">0</td>
            <td align="CENTER">37355</td>
          </tr>
          <tr align="CENTER">
            <td align="RIGHT">[200]
            </td>
            <td align="CENTER">APNUNU</td>
            <td align="CENTER">0</td>
            <td align="CENTER">1</td>
          </tr>
          <tr align="CENTER">
            <td align="RIGHT">[201]
            </td>
            <td align="CENTER">APNURA</td>
            <td align="CENTER">0</td>
            <td align="CENTER">94</td>
          </tr>
          <tr align="CENTER">
            <td align="RIGHT">[202]
            </td>
            <td align="CENTER">APNV50</td>
            <td align="CENTER">0</td>
            <td align="CENTER">1</td>
          </tr>
          <tr align="CENTER">
            <td align="RIGHT">[203]
            </td>
            <td align="CENTER">APNW01</td>
            <td align="CENTER">0</td>
            <td align="CENTER">31209</td>
          </tr>
          <tr align="CENTER">
            <td align="RIGHT">[204]
            </td>
            <td align="CENTER">APNX01</td>
            <td align="CENTER">0</td>
            <td align="CENTER">8003</td>
          </tr>
          <tr align="CENTER">
            <td align="RIGHT">[205]
            </td>
            <td align="CENTER">APNX02</td>
            <td align="CENTER">0</td>
            <td align="CENTER">5106</td>
          </tr>
          <tr align="CENTER">
            <td align="RIGHT">[206]
            </td>
            <td align="CENTER">APNX16</td>
            <td align="CENTER">0</td>
            <td align="CENTER">1277</td>
          </tr>
          <tr align="CENTER">
            <td align="RIGHT">[207]
            </td>
            <td align="CENTER">APNX2</td>
            <td align="CENTER">0</td>
            <td align="CENTER">451</td>
          </tr>
          <tr align="CENTER">
            <td align="RIGHT">[208]
            </td>
            <td align="CENTER">APNX30</td>
            <td align="CENTER">0</td>
            <td align="CENTER">558</td>
          </tr>
          <tr align="CENTER">
            <td align="RIGHT">[209]
            </td>
            <td align="CENTER">APNXOB</td>
            <td align="CENTER">0</td>
            <td align="CENTER">250</td>
          </tr>
        </tbody>
      </table>
      <br>
      APUxxx is ...<br>
      <br>
      <table border="">
        <tbody>
          <tr align="CENTER">
            <td align="RIGHT">[338]
            </td>
            <td align="CENTER">APU16K</td>
            <td align="CENTER">0</td>
            <td align="CENTER">108</td>
          </tr>
          <tr align="CENTER">
            <td align="RIGHT">[339]
            </td>
            <td align="CENTER">APU16N</td>
            <td align="CENTER">0</td>
            <td align="CENTER">4266</td>
          </tr>
          <tr align="CENTER">
            <td align="RIGHT">[340]
            </td>
            <td align="CENTER">APU18A</td>
            <td align="CENTER">0</td>
            <td align="CENTER">991</td>
          </tr>
          <tr align="CENTER">
            <td align="RIGHT">[341]
            </td>
            <td align="CENTER">APU1GN</td>
            <td align="CENTER">0</td>
            <td align="CENTER">1</td>
          </tr>
          <tr align="CENTER">
            <td align="RIGHT">[342]
            </td>
            <td align="CENTER">APU203</td>
            <td align="CENTER">0</td>
            <td align="CENTER">184</td>
          </tr>
          <tr align="CENTER">
            <td align="RIGHT">[343]
            </td>
            <td align="CENTER">APU24</td>
            <td align="CENTER">0</td>
            <td align="CENTER">569</td>
          </tr>
          <tr align="CENTER">
            <td align="RIGHT">[344]
            </td>
            <td align="CENTER">APU24N</td>
            <td align="CENTER">0</td>
            <td align="CENTER">1</td>
          </tr>
          <tr align="CENTER">
            <td align="RIGHT">[345]
            </td>
            <td align="CENTER">APU24P</td>
            <td align="CENTER">0</td>
            <td align="CENTER">799</td>
          </tr>
          <tr align="CENTER">
            <td align="RIGHT">[346]
            </td>
            <td align="CENTER">APU250</td>
            <td align="CENTER">0</td>
            <td align="CENTER">39</td>
          </tr>
          <tr align="CENTER">
            <td align="RIGHT">[347]
            </td>
            <td align="CENTER">APU253-7</td>
            <td align="CENTER">0</td>
            <td align="CENTER">1</td>
          </tr>
          <tr align="CENTER">
            <td align="RIGHT">[348]
            </td>
            <td align="CENTER">APU256</td>
            <td align="CENTER">0</td>
            <td align="CENTER">1040</td>
          </tr>
          <tr align="CENTER">
            <td align="RIGHT">[349]
            </td>
            <td align="CENTER">APU25D</td>
            <td align="CENTER">0</td>
            <td align="CENTER">89</td>
          </tr>
          <tr align="CENTER">
            <td align="RIGHT">[350]
            </td>
            <td align="CENTER">APU25E</td>
            <td align="CENTER">0</td>
            <td align="CENTER">1</td>
          </tr>
          <tr align="CENTER">
            <td align="RIGHT">[351]
            </td>
            <td align="CENTER">APU25H</td>
            <td align="CENTER">0</td>
            <td align="CENTER">1310</td>
          </tr>
          <tr align="CENTER">
            <td align="RIGHT">[352]
            </td>
            <td align="CENTER">APU25J</td>
            <td align="CENTER">0</td>
            <td align="CENTER">237</td>
          </tr>
          <tr align="CENTER">
            <td align="RIGHT">[353]
            </td>
            <td align="CENTER">APU25M</td>
            <td align="CENTER">0</td>
            <td align="CENTER">262</td>
          </tr>
          <tr align="CENTER">
            <td align="RIGHT">[354]
            </td>
            <td align="CENTER">APU25N</td>
            <td align="CENTER">0</td>
            <td align="CENTER">876184</td>
          </tr>
          <tr align="CENTER">
            <td align="RIGHT">[355]
            </td>
            <td align="CENTER">APU25N-13</td>
            <td align="CENTER">0</td>
            <td align="CENTER">1</td>
          </tr>
          <tr align="CENTER">
            <td align="RIGHT">[356]
            </td>
            <td align="CENTER">APU25N-2</td>
            <td align="CENTER">0</td>
            <td align="CENTER">1</td>
          </tr>
          <tr align="CENTER">
            <td align="RIGHT">[357]
            </td>
            <td align="CENTER">APU25N-3</td>
            <td align="CENTER">0</td>
            <td align="CENTER">1</td>
          </tr>
          <tr align="CENTER">
            <td align="RIGHT">[358]
            </td>
            <td align="CENTER">APU25N-4</td>
            <td align="CENTER">0</td>
            <td align="CENTER">1</td>
          </tr>
          <tr align="CENTER">
            <td align="RIGHT">[359]
            </td>
            <td align="CENTER">APU25N-5</td>
            <td align="CENTER">0</td>
            <td align="CENTER">1</td>
          </tr>
          <tr align="CENTER">
            <td align="RIGHT">[360]
            </td>
            <td align="CENTER">APU25V</td>
            <td align="CENTER">0</td>
            <td align="CENTER">2</td>
          </tr>
          <tr align="CENTER">
            <td align="RIGHT">[361]
            </td>
            <td align="CENTER">APU29N</td>
            <td align="CENTER">0</td>
            <td align="CENTER">1</td>
          </tr>
          <tr align="CENTER">
            <td align="RIGHT">[362]
            </td>
            <td align="CENTER">APU2KU</td>
            <td align="CENTER">0</td>
            <td align="CENTER">1</td>
          </tr>
          <tr align="CENTER">
            <td align="RIGHT">[363]
            </td>
            <td align="CENTER">APU2Y9</td>
            <td align="CENTER">0</td>
            <td align="CENTER">1</td>
          </tr>
          <tr align="CENTER">
            <td align="RIGHT">[364]
            </td>
            <td align="CENTER">APUAPU</td>
            <td align="CENTER">0</td>
            <td align="CENTER">1</td>
          </tr>
          <tr align="CENTER">
            <td align="RIGHT">[365]
            </td>
            <td align="CENTER">APUARM</td>
            <td align="CENTER">0</td>
            <td align="CENTER">177</td>
          </tr>
          <tr align="CENTER">
            <td align="RIGHT">[366]
            </td>
            <td align="CENTER">APUCMD</td>
            <td align="CENTER">0</td>
            <td align="CENTER">1</td>
          </tr>
          <tr align="CENTER">
            <td align="RIGHT">[367]
            </td>
            <td align="CENTER">APUN10</td>
            <td align="CENTER">0</td>
            <td align="CENTER">5636</td>
          </tr>
          <tr align="CENTER">
            <td align="RIGHT">[368]
            </td>
            <td align="CENTER">APUO5N</td>
            <td align="CENTER">0</td>
            <td align="CENTER">1</td>
          </tr>
          <tr align="CENTER">
            <td align="RIGHT">[369]
            </td>
            <td align="CENTER">APUP5N</td>
            <td align="CENTER">0</td>
            <td align="CENTER">1</td>
          </tr>
          <tr align="CENTER">
            <td align="RIGHT">[370]
            </td>
            <td align="CENTER">APUU5N</td>
            <td align="CENTER">0</td>
            <td align="CENTER">1</td>
          </tr>
          <tr align="CENTER">
            <td align="RIGHT">[371]
            </td>
            <td align="CENTER">APUWX</td>
            <td align="CENTER">0</td>
            <td align="CENTER">1020</td>
          </tr>
          <tr align="CENTER">
            <td align="RIGHT">[372]
            </td>
            <td align="CENTER">APUX5N</td>
            <td align="CENTER">0</td>
            <td align="CENTER">1</td>
          </tr>
        </tbody>
      </table>
      <br>
      Lynn (D) - KJ4ERJ - Author of APRSISCE for Windows Mobile and
      Win32<br>
      <br>
      On 12/2/2012 12:09 PM, Bryan Hoyer wrote:<br>
    </div>
    <blockquote
      cite="mid:43F23404-D765-4728-96C6-765CBEEA5103@gmail.com"
      type="cite">
      <meta http-equiv="Content-Type" content="text/html;
        charset=ISO-8859-1">
      <base href="x-msg://773/">
      <div>Thanks for clearing this up.</div>
      <div><br>
      </div>
      How do I reserve APNxxx or APUxxx for NW Digital Radios? i looked
      in APRS101 and see it isn't currently in use.
      <div><br>
      </div>
      <div>Thanks,</div>
      <div>Bryan</div>
      <div><br>
        <div>
          <div>On Nov 10, 2012, at 4:21 PM, Robert Bruninga <<a
              moz-do-not-send="true" href="mailto:bruninga@usna.edu">bruninga@usna.edu</a>>
            wrote:</div>
          <br class="Apple-interchange-newline">
          <blockquote type="cite">
            <div link="blue" vlink="purple" style="font-family:
              Helvetica; font-size: medium; font-style: normal;
              font-variant: normal; font-weight: normal; letter-spacing:
              normal; line-height: normal; orphans: 2; text-align:
              -webkit-auto; text-indent: 0px; text-transform: none;
              white-space: normal; widows: 2; word-spacing: 0px;
              -webkit-text-size-adjust: auto; -webkit-text-stroke-width:
              0px; word-wrap: break-word; " lang="EN-US">
              <div class="WordSection1" style="page: WordSection1; ">
                <div style="margin: 0in 0in 0.0001pt; font-size: 12pt;
                  font-family: 'Times New Roman', serif; "><span
                    style="font-size: 11pt; font-family: Calibri,
                    sans-serif; color: rgb(31, 73, 125); ">The original
                    texting APRS radio, the D7 can only display 45 bytes
                    of Messages.  The D700 displays 64.</span></div>
                <div style="margin: 0in 0in 0.0001pt; font-size: 12pt;
                  font-family: 'Times New Roman', serif; "><span
                    style="font-size: 11pt; font-family: Calibri,
                    sans-serif; color: rgb(31, 73, 125); ">The VX8R etc
                    I think displays 80 maybe.</span></div>
                <p class="MsoNormal" style="margin: 0in 0in 0.0001pt;
                  font-size: 12pt; font-family: 'Times New Roman',
                  serif; "><span style="font-size: 11pt; font-family:
                    Calibri, sans-serif; color: rgb(31, 73, 125); "> </span></p>
                <div style="margin: 0in 0in 0.0001pt; font-size: 12pt;
                  font-family: 'Times New Roman', serif; "><span
                    style="font-size: 11pt; font-family: Calibri,
                    sans-serif; color: rgb(31, 73, 125); ">Just
                    remember, limiting to 45 charageceters will ALWAYS
                    work and be seen by everyone.  Anything longer is
                    risking miss-commmunication. </span></div>
                <p class="MsoNormal" style="margin: 0in 0in 0.0001pt;
                  font-size: 12pt; font-family: 'Times New Roman',
                  serif; "><span style="font-size: 11pt; font-family:
                    Calibri, sans-serif; color: rgb(31, 73, 125); "> </span></p>
                <div style="margin: 0in 0in 0.0001pt; font-size: 12pt;
                  font-family: 'Times New Roman', serif; "><span
                    style="font-size: 11pt; font-family: Calibri,
                    sans-serif; color: rgb(31, 73, 125); ">But yes, they
                    can be longer if you KNOW who you are sending to. 
                    That is why the APxxxx identifies the type of radio
                    in all packets, so we can see what their
                    capabilities are.</span></div>
                <p class="MsoNormal" style="margin: 0in 0in 0.0001pt;
                  font-size: 12pt; font-family: 'Times New Roman',
                  serif; "><span style="font-size: 11pt; font-family:
                    Calibri, sans-serif; color: rgb(31, 73, 125); "> </span></p>
                <div style="margin: 0in 0in 0.0001pt; font-size: 12pt;
                  font-family: 'Times New Roman', serif; "><span
                    style="font-size: 11pt; font-family: Calibri,
                    sans-serif; color: rgb(31, 73, 125); ">Bob, WB4APR</span></div>
                <p class="MsoNormal" style="margin: 0in 0in 0.0001pt;
                  font-size: 12pt; font-family: 'Times New Roman',
                  serif; "><span style="font-size: 11pt; font-family:
                    Calibri, sans-serif; color: rgb(31, 73, 125); "> </span></p>
                <p class="MsoNormal" style="margin: 0in 0in 0.0001pt;
                  font-size: 12pt; font-family: 'Times New Roman',
                  serif; "><span style="font-size: 11pt; font-family:
                    Calibri, sans-serif; color: rgb(31, 73, 125); "> </span></p>
                <div>
                  <div style="border-style: solid none none;
                    border-top-width: 1pt; border-top-color: rgb(181,
                    196, 223); padding: 3pt 0in 0in; ">
                    <div style="margin: 0in 0in 0.0001pt; font-size:
                      12pt; font-family: 'Times New Roman', serif; "><b><span
                          style="font-size: 10pt; font-family: Tahoma,
                          sans-serif; ">From:</span></b><span
                        style="font-size: 10pt; font-family: Tahoma,
                        sans-serif; "><span
                          class="Apple-converted-space"> </span><a
                          moz-do-not-send="true"
                          href="mailto:aprssig-bounces@tapr.org"
                          style="color: purple; text-decoration:
                          underline; ">aprssig-bounces@tapr.org</a><span
                          class="Apple-converted-space"> </span>[mailto:<a
                          moz-do-not-send="true"
                          href="mailto:aprssig-bounces@tapr.org"
                          style="color: purple; text-decoration:
                          underline; ">aprssig-bounces@tapr.org</a>]<span
                          class="Apple-converted-space"> </span><b>On
                          Behalf Of<span class="Apple-converted-space"> </span></b>Bryan
                        Hoyer<br>
                        <b>Sent:</b><span class="Apple-converted-space"> </span>Saturday,
                        November 10, 2012 11:22 AM<br>
                        <b>To:</b><span class="Apple-converted-space"> </span>TAPR
                        APRS Mailing List<br>
                        <b>Subject:</b><span
                          class="Apple-converted-space"> </span>[aprssig]
                        What sets the max packet length for APRS</span></div>
                  </div>
                </div>
                <p class="MsoNormal" style="margin: 0in 0in 0.0001pt;
                  font-size: 12pt; font-family: 'Times New Roman',
                  serif; "> </p>
                <div style="margin: 0in 0in 0.0001pt; font-size: 12pt;
                  font-family: 'Times New Roman', serif; ">APRS1.01
                  states 67 characters for a message and up to 43 for a
                  comment, yet I see packets twice that long on<span
                    class="Apple-converted-space"> </span><a
                    moz-do-not-send="true" href="http://APRS.FI"
                    style="color: purple; text-decoration: underline; ">APRS.FI</a>.
                  This ones 109 after the :</div>
                <div>
                  <p class="MsoNormal" style="margin: 0in 0in 0.0001pt;
                    font-size: 12pt; font-family: 'Times New Roman',
                    serif; "> </p>
                </div>
                <div>
                  <div style="margin: 0in 0in 0.0001pt; font-size: 12pt;
                    font-family: 'Times New Roman', serif; "><b><span
                        style="font-size: 9pt; font-family: Verdana,
                        sans-serif; background-color: white;
                        background-position: initial initial;
                        background-repeat: initial initial; "><a
                          moz-do-not-send="true"
                          href="http://aprs.fi/?c=raw&limit=&call=KA8OAD-1"
                          style="color: purple; text-decoration:
                          underline; "><span style="text-decoration:
                            none; ">KA8OAD-1</span></a></span></b><span
                      style="font-size: 9pt; font-family: Verdana,
                      sans-serif; background-color: white;
                      background-position: initial initial;
                      background-repeat: initial initial; ">>APU25N,</span><a
                      moz-do-not-send="true"
                      href="http://aprs.fi/?c=raw&limit=&call=K8YSE-1"
                      style="color: purple; text-decoration: underline;
                      "><span style="font-size: 9pt; font-family:
                        Verdana, sans-serif; background-color: white;
                        text-decoration: none; background-position:
                        initial initial; background-repeat: initial
                        initial; ">K8YSE-1</span></a><span
                      style="font-size: 9pt; font-family: Verdana,
                      sans-serif; background-color: white;
                      background-position: initial initial;
                      background-repeat: initial initial; ">,WIDE1,</span><a
                      moz-do-not-send="true"
                      href="http://aprs.fi/?c=raw&limit=&call=K8UI-1"
                      style="color: purple; text-decoration: underline;
                      "><span style="font-size: 9pt; font-family:
                        Verdana, sans-serif; background-color: white;
                        text-decoration: none; background-position:
                        initial initial; background-repeat: initial
                        initial; ">K8UI-1</span></a><span
                      style="font-size: 9pt; font-family: Verdana,
                      sans-serif; background-color: white;
                      background-position: initial initial;
                      background-repeat: initial initial; ">,WIDE2*,qAR,</span><a
                      moz-do-not-send="true"
                      href="http://aprs.fi/?c=raw&limit=&call=K8LI-1"
                      style="color: purple; text-decoration: underline;
                      "><span style="font-size: 9pt; font-family:
                        Verdana, sans-serif; background-color: white;
                        text-decoration: none; background-position:
                        initial initial; background-repeat: initial
                        initial; ">K8LI-1</span></a><span
                      style="font-size: 9pt; font-family: Verdana,
                      sans-serif; background-color: white;
                      background-position: initial initial;
                      background-repeat: initial initial; ">:@101613z4108.09N/08136.25W_190/004g005t057r000p020P020b10220h51FWX_<a class="moz-txt-link-freetext" href="http://">http://</a><a
                        moz-do-not-send="true"
                        href="http://pages.sssnet.com/kend"
                        style="color: purple; text-decoration:
                        underline; ">pages.sssnet.com/kend</a> Fairlawn,OH</span></div>
                  <div>
                    <p class="MsoNormal" style="margin: 0in 0in
                      0.0001pt; font-size: 12pt; font-family: 'Times New
                      Roman', serif; "> </p>
                  </div>
                  <div>
                    <div style="margin: 0in 0in 0.0001pt; font-size:
                      12pt; font-family: 'Times New Roman', serif; ">AX.25
                      says 256 bytes for the UI payload</div>
                  </div>
                  <div>
                    <p class="MsoNormal" style="margin: 0in 0in
                      0.0001pt; font-size: 12pt; font-family: 'Times New
                      Roman', serif; "> </p>
                  </div>
                  <div>
                    <div style="margin: 0in 0in 0.0001pt; font-size:
                      12pt; font-family: 'Times New Roman', serif; ">A
                      Tweet is 140 characters</div>
                  </div>
                  <div>
                    <p class="MsoNormal" style="margin: 0in 0in
                      0.0001pt; font-size: 12pt; font-family: 'Times New
                      Roman', serif; "> </p>
                  </div>
                  <div>
                    <div style="margin: 0in 0in 0.0001pt; font-size:
                      12pt; font-family: 'Times New Roman', serif; ">An
                      SMS is 160 characters</div>
                  </div>
                  <div>
                    <p class="MsoNormal" style="margin: 0in 0in
                      0.0001pt; font-size: 12pt; font-family: 'Times New
                      Roman', serif; "> </p>
                  </div>
                  <div>
                    <div style="margin: 0in 0in 0.0001pt; font-size:
                      12pt; font-family: 'Times New Roman', serif; ">Is
                      it just the display limit of some radios?</div>
                  </div>
                  <div>
                    <p class="MsoNormal" style="margin: 0in 0in
                      0.0001pt; font-size: 12pt; font-family: 'Times New
                      Roman', serif; "> </p>
                  </div>
                  <div>
                    <div style="margin: 0in 0in 0.0001pt; font-size:
                      12pt; font-family: 'Times New Roman', serif; ">Just
                      exploring the capabilities and limitations of APRS</div>
                  </div>
                  <div>
                    <p class="MsoNormal" style="margin: 0in 0in
                      0.0001pt; font-size: 12pt; font-family: 'Times New
                      Roman', serif; "> </p>
                  </div>
                  <div>
                    <div style="margin: 0in 0in 0.0001pt; font-size:
                      12pt; font-family: 'Times New Roman', serif; ">Thanks!</div>
                  </div>
                  <div>
                    <div style="margin: 0in 0in 0.0001pt; font-size:
                      12pt; font-family: 'Times New Roman', serif; ">Bryan
                      Hoyer - K7UDR</div>
                  </div>
                  <div>
                    <p class="MsoNormal" style="margin: 0in 0in
                      0.0001pt; font-size: 12pt; font-family: 'Times New
                      Roman', serif; "> </p>
                  </div>
                </div>
              </div>
              _______________________________________________<br>
              aprssig mailing list<br>
              <a moz-do-not-send="true" href="mailto:aprssig@tapr.org"
                style="color: purple; text-decoration: underline; ">aprssig@tapr.org</a><br>
              <a moz-do-not-send="true"
                href="https://www.tapr.org/cgi-bin/mailman/listinfo/aprssig"
                style="color: purple; text-decoration: underline; ">https://www.tapr.org/cgi-bin/mailman/listinfo/aprssig</a></div>
          </blockquote>
        </div>
        <br>
      </div>
      <br>
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      <br>
      <pre wrap="">_______________________________________________
aprssig mailing list
<a class="moz-txt-link-abbreviated" href="mailto:aprssig@tapr.org">aprssig@tapr.org</a>
<a class="moz-txt-link-freetext" href="https://www.tapr.org/cgi-bin/mailman/listinfo/aprssig">https://www.tapr.org/cgi-bin/mailman/listinfo/aprssig</a>
</pre>
    </blockquote>
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