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From
<a class="moz-txt-link-freetext" href="http://wiki.ham.fi/Aprs.fi_Info_pages#Stations_heard_by_X.2C_and_stations_which_heard_Y">http://wiki.ham.fi/Aprs.fi_Info_pages#Stations_heard_by_X.2C_and_stations_which_heard_Y</a><br>
<br>
<blockquote type="cite">
<h4> <span class="mw-headline"
id="Stations_heard_by_X.2C_and_stations_which_heard_Y">Stations
heard by X, and stations which heard Y</span></h4>
<p>aprs.fi collects monthly summaries of digipeater and igate
statistics. The info page shows both a table of digipeaters and
igates which heard the given station, and (if the station is a
digipeater or igate) which other stations where heard by that
station. The most recently updated entries are shown using a
larger font.
</p>
<p>These statistics are usually somewhat correct, but there are
several caveats, and as you've probably heard – there are lies,
damn lies, and statistics.
</p>
<ul>
<li> The APRS-IS network that feeds the APRS packets from the
igates to aprs.fi does duplicate suppression. Only the first
gated copy of a packet traverses the entire network. All other
duplicate copies seen within 30 seconds after the first packet
are dropped by APRS-IS. A packet which is heard by multiple
igates normally gets credited only for a single igate.
</li>
<li> A lot of digipeaters do not add their own callsign in the
packet's path when retransmitting a packet. aprs.fi cannot
possibly know about those.
</li>
<li> A lot of digipeaters do callsign substitution instead of
insertion, replacing original path components. A packet with a
path of OH7RDÖ,WIDE2-1 could have been a WIDE1-1,WIDE2-1
packet in the first place, and gone through OH7RDÖ and another
unknown digipeater.
</li>
<li> The aprs.fi "first heard" algorithm tries to go on the safe
side: if it's not sure, it doesn't count as directly heard.
But even then, some incorrect overly long paths are shown.
</li>
<li> Stations transmitting invalid or fake coordinates will skew
these statistics. If the transmitting station claims to be
1000 km away (due to a bad GPS fix), my best guess can only be
that the station actually is that far away.
</li>
<li> Items and objects are not shown here, since they are
usually far away from the transmitter which transmitted the
packets.
</li>
</ul>
</blockquote>
<br>
Packets have to meet a lot of criteria to be called "Heard by" at
aprs.fi. Most likely cause is that all of your stations are using
the recommended path of "WIDE1-1,WIDE2-1" which aprs.fi doesn't
consider to be a direct reception. Change your mobile to WIDE1-1 or
WIDE1-1,WIDE2-2 and see if it then shows up in the list.<br>
<br>
Lynn (D) - KJ4ERJ - Author of APRSISCE for Windows Mobile and Win32<br>
<br>
<div class="moz-cite-prefix">On 3/18/2014 3:36 AM, Boardman, Bruce
wrote:<br>
</div>
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<div class="WordSection1">
<p class="MsoNormal"><span
style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">Andrew,<o:p></o:p></span></p>
<p class="MsoNormal"><span
style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">I
tried terminating the vehicle transmitter so only I could
hear it locally. The vehicle tracks OK but still no stations
heard by?<o:p></o:p></span></p>
<p class="MsoNormal"><span
style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D"><o:p> </o:p></span></p>
<div>
<p class="MsoNormal"
style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span
style="font-size:10.0pt;font-family:"Arial","sans-serif";color:#1F497D">Regards,</span><span
style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">
</span><span style="color:#1F497D"><o:p></o:p></span></p>
<p class="MsoNormal"
style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span
style="font-size:10.0pt;font-family:"Arial","sans-serif";color:#1F497D">Bruce
Boardman</span><span
style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">
<br>
</span><span
style="font-size:10.0pt;font-family:"Arial","sans-serif";color:#1F497D">Telstra
- Network & Access Technologies</span><span
style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">
<o:p></o:p></span></p>
<p class="MsoNormal"
style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span
style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D"><img
id="Picture_x0020_1"
src="cid:part1.06070105.02040801@homeside.to"
alt="cid:image004.jpg@01CC7EAD.B69AEBF0" width="27"
height="30"></span><span
style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D"><o:p></o:p></span></p>
<p class="MsoNormal"><span
style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D"><a
moz-do-not-send="true" href="tt:0285767011?Dial"><span
style="font-size:10.0pt;font-family:"Arial","sans-serif"">Ph
(02) 8576 7011</span></a> <br>
</span><span
style="font-size:10.0pt;font-family:"Arial","sans-serif";color:#1F497D">Mob
0427 755 678</span><span
style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">
<br>
Telstra Depot<br>
</span><span
style="font-size:10.0pt;font-family:"Arial","sans-serif";color:#1F497D">Lot2/
44-58 Duhig St,<o:p></o:p></span></p>
<p class="MsoNormal"><span
style="font-size:10.0pt;font-family:"Arial","sans-serif";color:#1F497D">Harristown
QLD 4350</span><span
style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">
<br>
<br>
</span><span
style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D"><o:p></o:p></span></p>
</div>
<p class="MsoNormal"><span
style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D"><o:p> </o:p></span></p>
<div>
<div style="border:none;border-top:solid #B5C4DF
1.0pt;padding:3.0pt 0cm 0cm 0cm">
<p class="MsoNormal"><b><span
style="font-size:10.0pt;font-family:"Tahoma","sans-serif""
lang="EN-US">From:</span></b><span
style="font-size:10.0pt;font-family:"Tahoma","sans-serif""
lang="EN-US"> <a class="moz-txt-link-abbreviated" href="mailto:aprssig-bounces@tapr.org">aprssig-bounces@tapr.org</a>
[<a class="moz-txt-link-freetext" href="mailto:aprssig-bounces@tapr.org">mailto:aprssig-bounces@tapr.org</a>] <b>On Behalf Of </b>Andrew
Rich<br>
<b>Sent:</b> Tuesday, 18 March 2014 5:29 PM<br>
<b>To:</b> TAPR APRS Mailing List<br>
<b>Subject:</b> Re: [aprssig] IGate issue<o:p></o:p></span></p>
</div>
</div>
<p class="MsoNormal"><o:p> </o:p></p>
<div>
<p class="MsoNormal">Could it be that Another Igate is faster
than your reports. ? <o:p></o:p></p>
</div>
<div>
<p class="MsoNormal"><o:p> </o:p></p>
</div>
<div>
<p class="MsoNormal">You should run wire shark program on your
PC to see packets going to the internet <o:p></o:p></p>
</div>
<div>
<p class="MsoNormal"><o:p> </o:p></p>
</div>
<div>
<p class="MsoNormal">Andrew <br>
<br>
Sent from my iPhone<o:p></o:p></p>
</div>
<div>
<p class="MsoNormal" style="margin-bottom:12.0pt"><br>
On 18 Mar 2014, at 1:16 pm, "Boardman, Bruce" <<a
moz-do-not-send="true"
href="mailto:Bruce.Boardman@team.telstra.com">Bruce.Boardman@team.telstra.com</a>>
wrote:<o:p></o:p></p>
</div>
<blockquote style="margin-top:5.0pt;margin-bottom:5.0pt">
<div>
<p class="MsoNormal"><span
style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">Andrew,</span><o:p></o:p></p>
<p class="MsoNormal"><span
style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D"> </span><o:p></o:p></p>
<p class="MsoNormal"><span
style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">When
you say passcode, I did need a new registration number,
and from that I got a new Validation number which I have
entered into IU View under “APRS server setup”. It is
connected to the tier 2 server OK. Have a look at my
Igate and you will see its working but no liost like it
used to have. Thanks.</span><o:p></o:p></p>
<p class="MsoNormal"><span
style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D"> </span><o:p></o:p></p>
<div>
<p class="MsoNormal"
style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span
style="font-size:10.0pt;font-family:"Arial","sans-serif";color:#1F497D">Regards,</span><span
style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">
</span><o:p></o:p></p>
<p class="MsoNormal"
style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span
style="font-size:10.0pt;font-family:"Arial","sans-serif";color:#1F497D">Bruce
Boardman</span><span
style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">
<br>
</span><span
style="font-size:10.0pt;font-family:"Arial","sans-serif";color:#1F497D">Telstra
- Network & Access Technologies</span><span
style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">
</span><o:p></o:p></p>
<p class="MsoNormal"
style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span
style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D"><image001.png></span><o:p></o:p></p>
<p class="MsoNormal"><span
style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D"><a
moz-do-not-send="true" href="tt:0285767011?Dial"><span
style="font-size:10.0pt;font-family:"Arial","sans-serif"">Ph
(02) 8576 7011</span></a> <br>
</span><span
style="font-size:10.0pt;font-family:"Arial","sans-serif";color:#1F497D">Mob
0427 755 678</span><span
style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">
<br>
Telstra Depot<br>
</span><span
style="font-size:10.0pt;font-family:"Arial","sans-serif";color:#1F497D">Lot2/
44-58 Duhig St,</span><o:p></o:p></p>
<p class="MsoNormal"><span
style="font-size:10.0pt;font-family:"Arial","sans-serif";color:#1F497D">Harristown
QLD 4350</span><span
style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">
<br>
<br>
<br>
</span><o:p></o:p></p>
</div>
<p class="MsoNormal"><span
style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D"> </span><o:p></o:p></p>
<div>
<div style="border:none;border-top:solid #B5C4DF
1.0pt;padding:3.0pt 0cm 0cm 0cm">
<p class="MsoNormal"><b><span
style="font-size:10.0pt;font-family:"Tahoma","sans-serif""
lang="EN-US">From:</span></b><span
style="font-size:10.0pt;font-family:"Tahoma","sans-serif""
lang="EN-US"> <a moz-do-not-send="true"
href="mailto:aprssig-bounces@tapr.org">aprssig-bounces@tapr.org</a>
[<a moz-do-not-send="true"
href="mailto:aprssig-bounces@tapr.org">mailto:aprssig-bounces@tapr.org</a>]
<b>On Behalf Of </b>Andrew P.<br>
<b>Sent:</b> Tuesday, 18 March 2014 11:51 AM<br>
<b>To:</b> TAPR APRS Mailing List<br>
<b>Subject:</b> Re: [aprssig] IGate issue</span><o:p></o:p></p>
</div>
</div>
<p class="MsoNormal"> <o:p></o:p></p>
<div>
<p class="MsoNormal" style="margin-bottom:12.0pt"><span
style="font-family:"Calibri","sans-serif"">Did
you change your passcode? You changed your callsign,
so you will need a new APRS-IS passcode corresponding
to the new callsign.<br>
<br>
Contact the author of the software you are using for a
new passcode if you don't have one already.<br>
<br>
Andrew Pavlin, KA2DDO<br>
author of YAAC<br>
<a moz-do-not-send="true"
href="http://www.ka2ddo.org/ka2ddo/YAAC.html">http://www.ka2ddo.org/ka2ddo/YAAC.html</a></span><o:p></o:p></p>
<div>
<div class="MsoNormal" style="text-align:center"
align="center"><span
style="font-family:"Calibri","sans-serif"">
<hr size="2" width="100%" align="center"></span></div>
<p class="MsoNormal" style="margin-bottom:12.0pt"><span
style="font-family:"Calibri","sans-serif"">From: <a
moz-do-not-send="true"
href="mailto:Bruce.Boardman@team.telstra.com">Bruce.Boardman@team.telstra.com</a><br>
To: <a moz-do-not-send="true"
href="mailto:aprssig@tapr.org">aprssig@tapr.org</a><br>
Date: Tue, 18 Mar 2014 12:45:46 +1100<br>
Subject: [aprssig] IGate issue</span><o:p></o:p></p>
<div>
<p class="MsoNormal"><span
style="font-family:"Calibri","sans-serif"">Hi,</span><o:p></o:p></p>
<p class="MsoNormal"><span
style="font-family:"Calibri","sans-serif"">I
recently changed address (to a different state in
Australia) and this necessitated a callsign
change. My Igate is now VK4MQ-5 (used to be
VK2ZZM-5).</span><o:p></o:p></p>
<p class="MsoNormal"><span
style="font-family:"Calibri","sans-serif""> </span><o:p></o:p></p>
<p class="MsoNormal"><span
style="font-family:"Calibri","sans-serif""><a
moz-do-not-send="true"
href="http://aprs.fi/info/a/VK4MQ-5"
target="_blank">http://aprs.fi/info/a/VK4MQ-5</a></span><o:p></o:p></p>
<p class="MsoNormal"><span
style="font-family:"Calibri","sans-serif""> </span><o:p></o:p></p>
<p class="MsoNormal"><span
style="font-family:"Calibri","sans-serif"">Since
the change I am passing packets RF to internet OK,
but I don't have a "stations heard by" list any
more. Also my graphs show nothing. I tried firing
up my mobile tracker on 10MHz so that only my
Igate could hear it, and the packets pass OK but
still no list. Other mobile stations are passing
info to me which I can see from their raw packets.
</span><o:p></o:p></p>
<p class="MsoNormal"><span
style="font-family:"Calibri","sans-serif"">Looks
like an APRS server problem to me, as I have
confirmed all my UI View settings?? Any advice
please?</span><o:p></o:p></p>
<p class="MsoNormal"><span
style="font-family:"Calibri","sans-serif""> </span><o:p></o:p></p>
<p class="MsoNormal"><span
style="font-family:"Calibri","sans-serif""> </span><o:p></o:p></p>
<p class="MsoNormal"><span
style="font-size:10.0pt;font-family:"Arial","sans-serif";color:#1F497D">Regards,</span><span
style="font-family:"Calibri","sans-serif";color:#1F497D">
</span><o:p></o:p></p>
<p class="MsoNormal" style="margin-bottom:12.0pt"><span
style="font-size:10.0pt;font-family:"Arial","sans-serif";color:#1F497D">Bruce
Boardman</span><span
style="font-family:"Calibri","sans-serif";color:#1F497D">
</span><o:p></o:p></p>
<p class="MsoNormal"><span
style="font-family:"Calibri","sans-serif""> </span><o:p></o:p></p>
</div>
<p class="MsoNormal"><span
style="font-family:"Calibri","sans-serif""><br>
_______________________________________________
aprssig mailing list <a moz-do-not-send="true"
href="mailto:aprssig@tapr.org">aprssig@tapr.org</a>
<a moz-do-not-send="true"
href="http://www.tapr.org/mailman/listinfo/aprssig">http://www.tapr.org/mailman/listinfo/aprssig</a></span><o:p></o:p></p>
</div>
</div>
</div>
</blockquote>
<blockquote style="margin-top:5.0pt;margin-bottom:5.0pt">
<div>
<p class="MsoNormal">_______________________________________________<br>
aprssig mailing list<br>
<a moz-do-not-send="true" href="mailto:aprssig@tapr.org">aprssig@tapr.org</a><br>
<a moz-do-not-send="true"
href="http://www.tapr.org/mailman/listinfo/aprssig">http://www.tapr.org/mailman/listinfo/aprssig</a><o:p></o:p></p>
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<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="http://www.tapr.org/mailman/listinfo/aprssig">http://www.tapr.org/mailman/listinfo/aprssig</a>
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