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<DIV><FONT size=2 face=Arial>Here's a thought for you</FONT></DIV>
<DIV><FONT size=2 face=Arial></FONT> </DIV>
<DIV><FONT size=2 face=Arial>If I keyed up on 145.175 MHz on the top of a hill
that would be considered intentional interrference </FONT></DIV>
<DIV><FONT size=2 face=Arial></FONT> </DIV>
<DIV><FONT size=2 face=Arial>So at at what point does a high beacon rate border
on being interference ?</FONT></DIV>
<DIV><FONT size=2 face=Arial></FONT> </DIV>
<DIV><FONT size=2 face=Arial>There is NO protection against it.</FONT></DIV>
<DIV><FONT size=2 face=Arial></FONT> </DIV>
<DIV> </DIV>
<DIV>----------------------------------------------------------<BR>Andrew Rich
<BR>Airways Technical Officer Grade 4<BR>Surveillance - RADAR ADS-B<BR>Amateur
Radio Callsign VK4TEC<BR>email: <A
href="mailto:vk4tec@tech-software.net">vk4tec@tech-software.net</A><BR>web: <A
href="http://www.tech-software.net">www.tech-software.net</A></DIV>
<BLOCKQUOTE
style="BORDER-LEFT: #000000 2px solid; PADDING-LEFT: 5px; PADDING-RIGHT: 0px; MARGIN-LEFT: 5px; MARGIN-RIGHT: 0px">
<DIV style="FONT: 10pt arial">----- Original Message ----- </DIV>
<DIV
style="FONT: 10pt arial; BACKGROUND: #e4e4e4; font-color: black"><B>From:</B>
<A title=vk4tec@tech-software.net
href="mailto:vk4tec@tech-software.net">Andrew Rich (Home)</A> </DIV>
<DIV style="FONT: 10pt arial"><B>To:</B> <A title=ozaprs@aprs.net.au
href="mailto:ozaprs@aprs.net.au">Australian APRS Users</A> </DIV>
<DIV style="FONT: 10pt arial"><B>Sent:</B> Sunday, August 30, 2009 10:50
AM</DIV>
<DIV style="FONT: 10pt arial"><B>Subject:</B> Re: [OZAPRS] Beacon Intervals -
Reminder</DIV>
<DIV><BR></DIV>
<DIV><FONT size=2 face=Arial>Yep thats down right irresponsible </FONT></DIV>
<DIV><FONT size=2 face=Arial></FONT> </DIV>
<DIV><FONT size=2 face=Arial>Seeing 1200 baud takes some seconds to
send.</FONT></DIV>
<DIV><FONT size=2 face=Arial></FONT> </DIV>
<DIV> </DIV>
<DIV>----------------------------------------------------------<BR>Andrew Rich
<BR>Airways Technical Officer Grade 4<BR>Surveillance - RADAR ADS-B<BR>Amateur
Radio Callsign VK4TEC<BR>email: <A
href="mailto:vk4tec@tech-software.net">vk4tec@tech-software.net</A><BR>web: <A
href="http://www.tech-software.net">www.tech-software.net</A></DIV>
<BLOCKQUOTE
style="BORDER-LEFT: #000000 2px solid; PADDING-LEFT: 5px; PADDING-RIGHT: 0px; MARGIN-LEFT: 5px; MARGIN-RIGHT: 0px">
<DIV style="FONT: 10pt arial">----- Original Message ----- </DIV>
<DIV
style="FONT: 10pt arial; BACKGROUND: #e4e4e4; font-color: black"><B>From:</B>
<A title=geoff@gatwards.org href="mailto:geoff@gatwards.org">Geoff
Gatward</A> </DIV>
<DIV style="FONT: 10pt arial"><B>To:</B> <A title=ozaprs@aprs.net.au
href="mailto:ozaprs@aprs.net.au">'Australian APRS Users'</A> </DIV>
<DIV style="FONT: 10pt arial"><B>Sent:</B> Sunday, August 30, 2009 9:14
AM</DIV>
<DIV style="FONT: 10pt arial"><B>Subject:</B> [OZAPRS] Beacon Intervals -
Reminder</DIV>
<DIV><BR></DIV>
<DIV class=Section1>
<P class=MsoNormal>Folks,<o:p></o:p></P>
<P class=MsoNormal><o:p> </o:p></P>
<P class=MsoNormal>It seems that there are a group of users in the Central
Coast/Newcastle region that have set a new standard for APRS trackers, using
a THREE second beacon interval. (Three callsigns have been noted doing
this during initial investigations into the failure of the VK2RTZ-1
digipeater – not sure yet if this is related)<o:p></o:p></P>
<P class=MsoNormal><o:p> </o:p></P>
<P class=MsoNormal>PLEASE make sure that your beacon interval is set to NO
LESS THAN 60 seconds.<o:p></o:p></P>
<P class=MsoNormal><o:p> </o:p></P>
<P class=MsoNormal>3 seconds does two things, both VERY bad.<o:p></o:p></P>
<P style="TEXT-INDENT: -0.25in; mso-list: l0 level1 lfo1"
class=MsoListParagraph><![if !supportLists]><SPAN
style="mso-list: Ignore">a.<SPAN
style="FONT: 7pt 'Times New Roman'">
</SPAN></SPAN><![endif]>Saturates the frequency locally so nobody else in
simplex range can send their own beacons<o:p></o:p></P>
<P style="TEXT-INDENT: -0.25in; mso-list: l0 level1 lfo1"
class=MsoListParagraph><![if !supportLists]><SPAN
style="mso-list: Ignore">b.<SPAN
style="FONT: 7pt 'Times New Roman'">
</SPAN></SPAN><![endif]>Saturates the input of the receiving digipeaters so
that nobody else in the digi coverage area can send their own
beacons<o:p></o:p></P>
<P class=MsoNormal><o:p> </o:p></P>
<P class=MsoNormal>If you are in the area and notice anyone configured in
this way, PLEASE ask them to change their setup.<o:p></o:p></P>
<P class=MsoNormal>The configuration guidelines implemented NATIONALLY can
be found here: <A
href="http://aprs.net.au/vhf_guidelines.php">http://aprs.net.au/vhf_guidelines.php</A><o:p></o:p></P>
<P class=MsoNormal><o:p> </o:p></P>
<P class=MsoNormal><o:p> </o:p></P>
<P class=MsoNormal>Regards,<o:p></o:p></P>
<P class=MsoNormal>Geoff VK2XJG<o:p></o:p></P>
<P style="MARGIN-LEFT: 0.25in" class=MsoNormal><o:p> </o:p></P></DIV>
<P>
<HR>
<P></P>_______________________________________________<BR>OZAPRS mailing
list<BR>OZAPRS@aprs.net.au<BR>http://lists.aprs.net.au/mailman/listinfo/ozaprs<BR>
<P>
<HR>
<P></P><BR>No virus found in this incoming message.<BR>Checked by AVG -
www.avg.com <BR>Version: 8.5.409 / Virus Database: 270.13.71/2334 - Release
Date: 08/29/09 17:51:00<BR></BLOCKQUOTE>
<P>
<HR>
<P></P>_______________________________________________<BR>OZAPRS mailing
list<BR>OZAPRS@aprs.net.au<BR>http://lists.aprs.net.au/mailman/listinfo/ozaprs<BR>
<P>
<HR>
<P></P><BR>No virus found in this incoming message.<BR>Checked by AVG -
www.avg.com <BR>Version: 8.5.409 / Virus Database: 270.13.71/2334 - Release
Date: 08/29/09 17:51:00<BR></BLOCKQUOTE></BODY></HTML>