<div dir="ltr"><div>Howdy All,<br><br></div>Well after a bit of collaboration and some sleuthing the APRS station in Adelaide that is running amok has been narrowed down a little bit, right now we know the following;<br><ul>
<li>The signal originates in the Northern Suburbs</li><li>Strongest signal report to date from this general region (<a href="http://goo.gl/maps/6UZRs">http://goo.gl/maps/6UZRs</a>)</li><li>The signal is over deviated, approx +/-10kHz so it cannot be reliably demodulated</li>
<li>The signal comes and goes at various times of the day, it is not there 100% of the time</li></ul><p>Anyway there are a number of people looking into the problem. We suspect that the issue is an unattended fill-in digi or home APRS station that has gone spurious, either that or a pirate that thinks this is funny.</p>
<p>I've received a number of reports from various Amateurs over the past few days and have started collecting and piecing together enough information to at least start looking.</p><p>I'd ask any Adelaide based hams that live out in the Northern or Western Suburbs to take a listen to the signal strength and report any findings to me either via VK5RSB during drive time (8-9am & 5-6pm) or email.<br>
</p><p>If you listen to the audio on the channel along side a TNC or sound card modem, any strong, mediochre or weak carrier that is not demodulated is the signal we want to receive reports from. Otherwise if you have an SDR then any signal that you see spilling out over the 25kHz channel bandwidth (trust me it's wide!) is the suspect we're after. Just something as simple as signal reports from various locations will help us get into the right area with beams and dopplers etc. With the other traffic on channel, isolating and tracking the right signal is not easy, but it isn't impossible either.<br>
</p><p>I think this weekend the foxhunting gear will get put on the car and some fun will be had trying to tracking this signal down.<br></p><p>73's</p><p>Matthew</p><p>VK5ZM</p></div><div class="gmail_extra"><br><br>
<div class="gmail_quote">On 9 July 2013 17:02, Paul Mullins <span dir="ltr"><<a href="mailto:pmullins@adam.com.au" target="_blank">pmullins@adam.com.au</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
Hi there all,<br>
been a long time from my last post.<br>
<br>
I would like to inform the operators and people looking after digi-peaters and any transmitting gear in the Adelaide area, we have a device transmitting and then resetting, then powering up and transmitting, and keeps doing this.<br>
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Just asking as I have been repairing a local digipeater and listening have heard this all day today.<br>
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cheers all<span class="HOEnZb"><font color="#888888"><br>
<br>
Paul<br>
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</font></span></blockquote></div><br><br clear="all"><br>-- <br>Matthew<br>VK5ZM<br>0487 653 245<br>
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