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<br><br>
<div class="gmail_quote">On Mon, May 16, 2011 at 10:28 AM, 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;">
> [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>
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</blockquote></div><br>