<div>The problem with that is that it takes less signal to make a PL tone decoder trigger than to decode a packet. In other words, I can hear you on voice alert alot more times that I can decode ax.25 packets. In theory what you suggest would work just as well, but in practice the PL tone wins hands down.
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<div>Wes<br><br> </div>
<div><span class="gmail_quote">On 2/11/07, <b class="gmail_sendername">Curt Mills</b> <<a href="mailto:archer@eskimo.com">archer@eskimo.com</a>> wrote:</span>
<blockquote class="gmail_quote" style="PADDING-LEFT: 1ex; MARGIN: 0px 0px 0px 0.8ex; BORDER-LEFT: #ccc 1px solid">On Sun, 11 Feb 2007, Robert Bruninga wrote:<br><br>> That's the joy of APRS Voice Alert. If someone is there and
<br>> within 2 or 3 miles of you, you cannot miss the opportunity for<br>> a live simplex QSO.<br><br>> Like we say, it only takes a few un-informed individuals running<br>> it from base stations or 24/7 parked cars to wipe out Voice
<br>> Alert in an area.<br><br>This thread makes me wonder if something simple couldn't be done<br>for non-Kenwood APRS stations: Perhaps a piezeo buzzer that could<br>be enabled/disabled in the firmware or with a switch on a Tinytrak4
<br>or Tracker2. The software could determine if they were within range<br>and whether they were mobile. You know, some nice configurable<br>options.<br><br>When I heard the buzzer I could swing my other 2-meter radio there
<br>quickly and give a yell.<br><br>No PL required, but we'd need a flag in the comment field to let<br>others know we were monitoring. This could be added automatically<br>by the firmware for our transmits if the piezo was enabled.
<br><br>--<br>Curt, WE7U. archer at eskimo dot com<br><a href="http://www.eskimo.com/~archer">http://www.eskimo.com/~archer</a><br>Lotto: A tax on people who are bad at math. - unknown<br>Windows: Microsoft's tax on computer illiterates. - WE7U.
<br>The world DOES revolve around me: I picked the coordinate system!"<br><br>_______________________________________________<br>aprssig mailing list<br><a href="mailto:aprssig@lists.tapr.org">aprssig@lists.tapr.org
</a><br><a href="https://lists.tapr.org/cgi-bin/mailman/listinfo/aprssig">https://lists.tapr.org/cgi-bin/mailman/listinfo/aprssig</a><br><br></blockquote></div><br><br clear="all"><br>-- <br>In theory there is no difference between practice and theory.