hear is the key word.<br>it might not ever tx msgs back tho because of channel congestion.<br><br>we plan on having something up, and might do dual, with a 70cm alternate channel and the aprs primary 144.39 <br><br>we would beacon an obj with freq and info abt the alt node, and probably put a bounding box limit on it.<br>
<br>Randy<br>WF5X<br><br><div class="gmail_quote">On Mon, May 16, 2011 at 4:45 PM, Bob Bruninga <span dir="ltr"><<a href="mailto:bruninga@usna.edu">bruninga@usna.edu</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex;">
<div link="blue" vlink="purple" lang="EN-US"><div><p class="MsoNormal"><span style="font-size:11.0pt;color:#1F497D">Why not put the Igate on 144.39 where everyone is?</span></p><p class="MsoNormal"><span style="font-size:11.0pt;color:#1F497D">It will hear those that are close, and that is the point.</span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;color:#1F497D"> </span></p><p class="MsoNormal"><span style="font-size:11.0pt;color:#1F497D">Bob, WB4APR<br><br></span></p><p class="MsoNormal"><span style="font-size:11.0pt;color:#1F497D"> </span></p>
<div style="border:none;border-top:solid #B5C4DF 1.0pt;padding:3.0pt 0in 0in 0in"><p class="MsoNormal"><b><span style="font-size:10.0pt">From:</span></b><span style="font-size:10.0pt"> <a href="mailto:aprssig-bounces@tapr.org" target="_blank">aprssig-bounces@tapr.org</a> [mailto:<a href="mailto:aprssig-bounces@tapr.org" target="_blank">aprssig-bounces@tapr.org</a>] <b>On Behalf Of </b>Randy Love<br>
<b>Sent:</b> Monday, May 16, 2011 3:18 PM<br><b>To:</b> TAPR APRS Mailing List<br><b>Subject:</b> Re: [aprssig] Digipeater setup for Dayton</span></p></div><div><div></div><div class="h5"><p class="MsoNormal"> </p><p class="MsoNormal" style="margin-bottom:12.0pt">
Hi, Bob.<br><br>I'm helping with an indoor vendor this year and am considering setting up an igate at the booth on a 70cm freq. Do you think such an indoor 70cm igate would be useful? <br><br>73,<br>Randy<br>WF5X</p><div>
<p class="MsoNormal">On Mon, May 16, 2011 at 10:28 AM, Bob Bruninga <<a href="mailto:bruninga@usna.edu" target="_blank">bruninga@usna.edu</a>> wrote:</p><p class="MsoNormal">> [does] anyone set up a digipeater at Dayton,<br>
> or do we rely on the local digi's?<br><br>Proper operation of an event like Dayton would suggest that putting up a<br>digipeater would be the worst thing to do. With over 300+ mobiles and<br>portables beaconing away all in simplex range of each other, a digipeater<br>
would do nothing but drastically reduce the reliability of the channel by<br>half or more.<br><br>The proper way to handle a ham radio event with a massive influx of APRS<br>operations is to:<br><br>1) Have no digi at the focal point (Hamvention) (all signals are direct)<br>
<br>2) Have all digis going out 20 miles in all directions be ONE-HOP DIGIS<br>ONLY. That is, they only respond to WIDE1-1 or WIDE2-2 and nothing else.<br>They digipeat once and do callsign substitution so the packet goes no<br>
farther.<br><br>3) Strategic IGates are placed right at Hamvention so they hear everything<br>in simplex range.<br><br>4) Additional IGates are configured so that every surrounding digi going out<br>20 miles has an IGate to hear the one-hop packets.<br>
<br>5) Doing all the above, then the hundreds of APRS mobiles and portables do<br>not have to change anything. They just drive into town with their normal<br>WIDE1-1,WIDE2-1 settings.<br><br>No matter where you are, you will hear all your surrounding stations, and<br>
that is the best APRS can do under those conditions.<br><br>Bob, WB4APR<br><br><br><br>_______________________________________________<br>aprssig mailing list<br><a href="mailto:aprssig@tapr.org" target="_blank">aprssig@tapr.org</a><br>
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<br></blockquote></div><br>