<div dir="ltr">Gavin,<div><br></div><div>You can go and find the stereo pilot tones in your commercial FM radio station those are GPS locked rubidium. We're lucky here in VK5 that our VHF/UHF beacons are GPS locked, so I typically go and use these to zero in RTL-SDR's to a few hertz... you might find the ones in Perth are of a similar nature, never hurts to ask.</div><div><br></div><div>73</div><div><br></div><div>Matthew</div><div>VK5ZM</div><div class="gmail_extra"><br><div class="gmail_quote">On 19 November 2017 at 14:56, Gavin Rogers <span dir="ltr"><<a href="mailto:grogers@vk6hgr.echidna.id.au" target="_blank">grogers@vk6hgr.echidna.id.au</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div style="word-wrap:break-word;line-break:after-white-space">Maybe different in other states, but in Perth the only carrier with GSM still is Vodadone, and their coverage isn't good enough where I am to get a good calibration.<br>
<br>
<br><br><div class="gmail_quote">On 19 November 2017 11:21:49 am AWST, Peter VK2MPJ <<a href="mailto:vk2mpj@yahoo.com.au" target="_blank">vk2mpj@yahoo.com.au</a>> wrote:<blockquote class="gmail_quote" style="margin:0pt 0pt 0pt 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex">
I’m curious why you say that using kal and a GSM signal is not possible anymore?<div>I did this locally just last weekend…</div><div><br></div><div>2MPJ</div><div><br><div><br><blockquote type="cite"><div><div class="h5"><div>On 19 Nov 2017, at 12:42 pm, Gavin Rogers <<a href="mailto:grogers@vk6hgr.echidna.id.au" target="_blank">grogers@vk6hgr.echidna.id.au</a>> wrote:</div><br class="m_-5270881075025938742Apple-interchange-newline"></div></div><div><div><div class="h5"><div class="m_-5270881075025938742moz-cite-prefix" style="font-family:Helvetica;font-size:12px;font-style:normal;font-variant-caps:normal;font-weight:normal;letter-spacing:normal;text-align:start;text-indent:0px;text-transform:none;white-space:normal;word-spacing:0px;background-color:rgb(255,255,255)">On 19/11/2017 9:30 AM,<span class="m_-5270881075025938742Apple-converted-space"> </span><a class="m_-5270881075025938742moz-txt-link-abbreviated" href="mailto:vk4tec@tech-software.net" style="color:purple;text-decoration:underline" target="_blank">vk4tec@tech-software.net</a><span class="m_-5270881075025938742Apple-converted-space"> </span>w<wbr>rote:<br></div><blockquote type="cite" style="font-family:Helvetica;font-size:12px;font-style:normal;font-variant-caps:normal;font-weight:normal;letter-spacing:normal;text-align:start;text-indent:0px;text-transform:none;white-space:normal;word-spacing:0px;background-color:rgb(255,255,255)"><div class="m_-5270881075025938742WordSection1"><br><div><div><div style="margin:0cm 0cm 0.0001pt;font-size:11pt;font-family:Calibri,sans-serif">Or, as i've mentioned before, just link to the existing Direwolf SDR+APRS guide, which covers off setting up an igate pretty well: <a href="https://github.com/wb2osz/direwolf/blob/master/doc/Raspberry-Pi-SDR-IGate.pdf" style="color:purple;text-decoration:underline" target="_blank">https://github.com/<wbr>wb2osz/direwolf/blob/master/<wbr>doc/Raspberry-Pi-SDR-IGate.pdf</a></div></div></div></div></blockquote><br style="font-family:Helvetica;font-size:12px;font-style:normal;font-variant-caps:normal;font-weight:normal;letter-spacing:normal;text-align:start;text-indent:0px;text-transform:none;white-space:normal;word-spacing:0px;background-color:rgb(255,255,255)"><span style="font-family:Helvetica;font-size:12px;font-style:normal;font-variant-caps:normal;font-weight:normal;letter-spacing:normal;text-align:start;text-indent:0px;text-transform:none;white-space:normal;word-spacing:0px;background-color:rgb(255,255,255);float:none;display:inline!important">In this guide, there's a link to a script that will tune to a NOAA frequency and re-calibrate an SDR TV stick (<span class="m_-5270881075025938742Apple-converted-space"> </span></span><a class="m_-5270881075025938742moz-txt-link-freetext" href="https://github.com/khaytsus/direwolf-init" style="color:purple;text-decoration:underline;font-family:Helvetica;font-size:12px;font-style:normal;font-variant-caps:normal;font-weight:normal;letter-spacing:normal;text-align:start;text-indent:0px;text-transform:none;white-space:normal;word-spacing:0px;background-color:rgb(255,255,255)" target="_blank">https://github.com/khaytsus/<wbr>direwolf-init</a><span style="font-family:Helvetica;font-size:12px;font-style:normal;font-variant-caps:normal;font-weight:normal;letter-spacing:normal;text-align:start;text-indent:0px;text-transform:none;white-space:normal;word-spacing:0px;background-color:rgb(255,255,255);float:none;display:inline!important"><span class="m_-5270881075025938742Apple-converted-space"> </span>)</span><br style="font-family:Helvetica;font-size:12px;font-style:normal;font-variant-caps:normal;font-weight:normal;letter-spacing:normal;text-align:start;text-indent:0px;text-transform:none;white-space:normal;word-spacing:0px;background-color:rgb(255,255,255)"><br style="font-family:Helvetica;font-size:12px;font-style:normal;font-variant-caps:normal;font-weight:normal;letter-spacing:normal;text-align:start;text-indent:0px;text-transform:none;white-space:normal;word-spacing:0px;background-color:rgb(255,255,255)"><span style="font-family:Helvetica;font-size:12px;font-style:normal;font-variant-caps:normal;font-weight:normal;letter-spacing:normal;text-align:start;text-indent:0px;text-transform:none;white-space:normal;word-spacing:0px;background-color:rgb(255,255,255);float:none;display:inline!important">What would be a good high-stability signal source here in VK for the calibration? I used to use the kal program to calibrate against GSM transmitters, but that's not possible any more. I'd think the trunking control channel for an emergency services' channel would be stable, strong and always on? Or DAB+ transmitter, or..?</span><br style="font-family:Helvetica;font-size:12px;font-style:normal;font-variant-caps:normal;font-weight:normal;letter-spacing:normal;text-align:start;text-indent:0px;text-transform:none;white-space:normal;word-spacing:0px;background-color:rgb(255,255,255)"><br style="font-family:Helvetica;font-size:12px;font-style:normal;font-variant-caps:normal;font-weight:normal;letter-spacing:normal;text-align:start;text-indent:0px;text-transform:none;white-space:normal;word-spacing:0px;background-color:rgb(255,255,255)"><br style="font-family:Helvetica;font-size:12px;font-style:normal;font-variant-caps:normal;font-weight:normal;letter-spacing:normal;text-align:start;text-indent:0px;text-transform:none;white-space:normal;word-spacing:0px;background-color:rgb(255,255,255)"><span style="font-family:Helvetica;font-size:12px;font-style:normal;font-variant-caps:normal;font-weight:normal;letter-spacing:normal;text-align:start;text-indent:0px;text-transform:none;white-space:normal;word-spacing:0px;background-color:rgb(255,255,255);float:none;display:inline!important">73</span><br style="font-family:Helvetica;font-size:12px;font-style:normal;font-variant-caps:normal;font-weight:normal;letter-spacing:normal;text-align:start;text-indent:0px;text-transform:none;white-space:normal;word-spacing:0px;background-color:rgb(255,255,255)"><span style="font-family:Helvetica;font-size:12px;font-style:normal;font-variant-caps:normal;font-weight:normal;letter-spacing:normal;text-align:start;text-indent:0px;text-transform:none;white-space:normal;word-spacing:0px;background-color:rgb(255,255,255);float:none;display:inline!important">Gavin.</span><br style="font-family:Helvetica;font-size:12px;font-style:normal;font-variant-caps:normal;font-weight:normal;letter-spacing:normal;text-align:start;text-indent:0px;text-transform:none;white-space:normal;word-spacing:0px;background-color:rgb(255,255,255)"><p style="font-family:Helvetica;font-size:12px;font-style:normal;font-variant-caps:normal;font-weight:normal;letter-spacing:normal;text-align:start;text-indent:0px;text-transform:none;white-space:normal;word-spacing:0px;background-color:rgb(255,255,255)"><br></p><pre class="m_-5270881075025938742moz-signature" cols="72" style="font-size:12px;font-style:normal;font-variant-caps:normal;font-weight:normal;letter-spacing:normal;text-align:start;text-indent:0px;text-transform:none;word-spacing:0px;background-color:rgb(255,255,255)">--
Gavin Rogers | Amateur radio station VK6HGR
<a class="m_-5270881075025938742moz-txt-link-freetext" href="http://www.livingwaters.com/good" style="color:purple;text-decoration:underline" target="_blank">http://www.livingwaters.com/<wbr>good</a> | <a class="m_-5270881075025938742moz-txt-link-freetext" href="http://vk6hgr.ampr.org/" style="color:purple;text-decoration:underline" target="_blank">http://vk6hgr.ampr.org/</a>
MSN/Skype/Email: <a class="m_-5270881075025938742moz-txt-link-abbreviated" href="mailto:grogers@vk6hgr.echidna.id.au" style="color:purple;text-decoration:underline" target="_blank">grogers@vk6hgr.echidna.id.au</a>
</pre></div></div><span style="font-family:Helvetica;font-size:12px;font-style:normal;font-variant-caps:normal;font-weight:normal;letter-spacing:normal;text-align:start;text-indent:0px;text-transform:none;white-space:normal;word-spacing:0px;background-color:rgb(255,255,255);float:none;display:inline!important">______________________________<wbr>_________________</span><span class=""><br style="font-family:Helvetica;font-size:12px;font-style:normal;font-variant-caps:normal;font-weight:normal;letter-spacing:normal;text-align:start;text-indent:0px;text-transform:none;white-space:normal;word-spacing:0px;background-color:rgb(255,255,255)"><span style="font-family:Helvetica;font-size:12px;font-style:normal;font-variant-caps:normal;font-weight:normal;letter-spacing:normal;text-align:start;text-indent:0px;text-transform:none;white-space:normal;word-spacing:0px;background-color:rgb(255,255,255);float:none;display:inline!important">OZAPRS mailing list</span><br style="font-family:Helvetica;font-size:12px;font-style:normal;font-variant-caps:normal;font-weight:normal;letter-spacing:normal;text-align:start;text-indent:0px;text-transform:none;white-space:normal;word-spacing:0px;background-color:rgb(255,255,255)"><a href="mailto:OZAPRS@aprs.net.au" style="color:purple;text-decoration:underline;font-family:Helvetica;font-size:12px;font-style:normal;font-variant-caps:normal;font-weight:normal;letter-spacing:normal;text-align:start;text-indent:0px;text-transform:none;white-space:normal;word-spacing:0px;background-color:rgb(255,255,255)" target="_blank">OZAPRS@aprs.net.au</a><br style="font-family:Helvetica;font-size:12px;font-style:normal;font-variant-caps:normal;font-weight:normal;letter-spacing:normal;text-align:start;text-indent:0px;text-transform:none;white-space:normal;word-spacing:0px;background-color:rgb(255,255,255)"><a href="http://lists.aprs.net.au/mailman/listinfo/ozaprs" style="color:purple;text-decoration:underline;font-family:Helvetica;font-size:12px;font-style:normal;font-variant-caps:normal;font-weight:normal;letter-spacing:normal;text-align:start;text-indent:0px;text-transform:none;white-space:normal;word-spacing:0px;background-color:rgb(255,255,255)" target="_blank">http://lists.aprs.net.au/<wbr>mailman/listinfo/ozaprs</a><br style="font-family:Helvetica;font-size:12px;font-style:normal;font-variant-caps:normal;font-weight:normal;letter-spacing:normal;text-align:start;text-indent:0px;text-transform:none;white-space:normal;word-spacing:0px;background-color:rgb(255,255,255)"></span></div></blockquote></div><br></div></blockquote></div><span class="HOEnZb"><font color="#888888"><br>
-- <br>
Gavin Rogers mobile</font></span></div><br>______________________________<wbr>_________________<br>
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<br></blockquote></div><br></div></div>