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<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D">Custom Self-built app in C and w/ some bash scripting agents to pull, parse and group prediction data from Predict. I am happy to share once I have completed
my testing and find it to be reasonably working. <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>
<p class="MsoNormal"><a name="_MailEndCompose"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D"><o:p> </o:p></span></a></p>
<p class="MsoNormal"><b><span style="font-size:11.0pt;font-family:"Calibri",sans-serif">From:</span></b><span style="font-size:11.0pt;font-family:"Calibri",sans-serif"> James Jolin [mailto:james.jolin@gmail.com]
<br>
<b>Sent:</b> Thursday, June 04, 2015 10:53 AM<br>
<b>To:</b> Nagi Punyamurthula; TAPR APRS Mailing List<br>
<b>Subject:</b> Re: [aprssig] PSAT digipeater is ON<o:p></o:p></span></p>
<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal"><span style="font-size:18.0pt;font-family:"Arial",sans-serif">Wondering what linux app you are using for aprx that you are testing.<o:p></o:p></span></p>
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<p class="MsoNormal" style="margin-bottom:.25in"><span style="font-size:18.0pt;font-family:"Arial",sans-serif">Jim wa9arb<o:p></o:p></span></p>
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<p class="MsoNormal">On Tue, Jun 2, 2015 at 6:37 PM, Nagi Punyamurthula via aprssig <<a href="mailto:aprssig@tapr.org" target="_blank">aprssig@tapr.org</a>> wrote:<o:p></o:p></p>
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<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">I use Predict and have a crontab to pull the latest TLE from celestrak everyday at 2am. It works great
to keep up w/ the latest TLEs. I have a separate linux app (testing now) that launches the APRX software upon pass thru AOS of ISS to do its sGate + RF Bacon procedures and then shuts it down after the pass through LOS</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"> </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">I would be looking at replicating similar behavior for PSAT pass throughs, although, the celestrak
does not (yet) contain a TLE for PSAT.</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"> </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">Hence the ask for a readily available TLE data for PSAT in celestrak or other source</span><o:p></o:p></p>
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<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"> </span><o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><a name="14db6a341a34b49b__MailEndCompose"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D"> </span></a><o:p></o:p></p>
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<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><b><span style="font-size:11.0pt;font-family:"Calibri",sans-serif">From:</span></b><span style="font-size:11.0pt;font-family:"Calibri",sans-serif"> aprssig [mailto:<a href="mailto:aprssig-bounces@tapr.org" target="_blank">aprssig-bounces@tapr.org</a>]
<b>On Behalf Of </b>Paul Bramscher via aprssig<br>
<b>Sent:</b> Tuesday, June 02, 2015 2:40 PM<br>
<b>To:</b> TAPR APRS Mailing List<br>
<b>Subject:</b> Re: [aprssig] PSAT digipeater is ON</span><o:p></o:p></p>
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<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"> <o:p></o:p></p>
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<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span style="font-family:"Arial",sans-serif;color:black">I use GPredict, which leans on celestrak for TLE's. I don't think I can/should manually enter TLE's into that program.
They might get wiped out with the next network TLE refresh -- or go stale otherwise. If the PSAT TLE's aren't yet part of the celestrak feed, is there a web site out there (e.g.
<a href="http://ariss.net" target="_blank">ariss.net</a>, <a href="http://aprs.fi" target="_blank">
aprs.fi</a>, etc.) providing PSAT tracking? Would also be nice to see some web-based tracking integration with
<a href="http://openstreetmap.org" target="_blank">openstreetmap.org</a> -- it's becoming quite polished lately. If time permitted, I'd tinker with that myself.</span><o:p></o:p></p>
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<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span style="font-family:"Arial",sans-serif;color:black"> </span><o:p></o:p></p>
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<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span style="font-family:"Arial",sans-serif;color:black">My igates don't yet run 24x7, but I'd like to see whether my setups can hear it for passes when I'm able to tinker in the
shack.</span><o:p></o:p></p>
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<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span style="font-family:"Arial",sans-serif;color:black"> </span><o:p></o:p></p>
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<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span style="font-family:"Arial",sans-serif;color:black">73, KD0KZE / Paul</span><o:p></o:p></p>
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<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span style="font-family:"Arial",sans-serif;color:black"> </span><o:p></o:p></p>
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<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><b><span style="font-family:"Helvetica",sans-serif;color:black">From:
</span></b><span style="font-family:"Helvetica",sans-serif;color:black">"Nagi Punyamurthula via aprssig" <<a href="mailto:aprssig@tapr.org" target="_blank">aprssig@tapr.org</a>><br>
<b>To: </b>"Stephen H. Smith" <<a href="mailto:wa8lmf2@aol.com" target="_blank">wa8lmf2@aol.com</a>>, "TAPR APRS Mailing List" <<a href="mailto:aprssig@tapr.org" target="_blank">aprssig@tapr.org</a>>, "Robert Bruninga" <<a href="mailto:bruninga@usna.edu" target="_blank">bruninga@usna.edu</a>><br>
<b>Sent: </b>Tuesday, June 2, 2015 12:53:06 PM<br>
<b>Subject: </b>Re: [aprssig] PSAT digipeater is ON</span><o:p></o:p></p>
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<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span style="font-family:"Helvetica",sans-serif;color:black"> </span><o:p></o:p></p>
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<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span style="font-family:"Helvetica",sans-serif;color:black">I'm trying to track the orbit for PSAT using celestrak TLE however, can't seem to find him there. Can someone share
where one can find the TLE for PSAT<br>
<a href="http://www.celestrak.com/NORAD/elements/amateur.txt" target="_blank">www.celestrak.com/NORAD/elements/amateur.txt</a></span><o:p></o:p></p>
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<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span style="font-family:"Helvetica",sans-serif;color:black"> </span><o:p></o:p></p>
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<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span style="font-family:"Helvetica",sans-serif;color:black">this is a fantastic milestone in the APRS technology wave; Congrats to Bob, et al involved in landing this project.</span><o:p></o:p></p>
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<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span style="font-family:"Helvetica",sans-serif;color:black"> </span><o:p></o:p></p>
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<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span style="font-family:"Helvetica",sans-serif;color:black">Thanks</span><o:p></o:p></p>
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<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span style="font-family:"Helvetica",sans-serif;color:black">73, N0AGI, Nagi<br>
<a href="http://N0AGI.com/" target="_blank">http://N0AGI.com/</a><br>
<a href="http://aprs.fi/info/N0AGI" target="_blank">http://aprs.fi/info/N0AGI</a></span><o:p></o:p></p>
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<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span style="font-family:"Helvetica",sans-serif;color:black"> </span><o:p></o:p></p>
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<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span style="font-family:"Helvetica",sans-serif;color:black"><br>
-----Original Message-----<br>
From: aprssig [<a href="mailto:aprssig-bounces@tapr.org" target="_blank">mailto:aprssig-bounces@tapr.org</a>] On Behalf Of Stephen H. Smith via aprssig<br>
Sent: Tuesday, June 02, 2015 12:06 PM<br>
To: Robert Bruninga; TAPR APRS Mailing List<br>
Subject: Re: [aprssig] PSAT digipeater is ON</span><o:p></o:p></p>
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<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span style="font-family:"Helvetica",sans-serif;color:black"> </span><o:p></o:p></p>
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<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span style="font-family:"Helvetica",sans-serif;color:black">On 6/2/2015 9:38 AM, Robert Bruninga via aprssig wrote:<br>
> APRS activists:<br>
></span><o:p></o:p></p>
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<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span style="font-family:"Helvetica",sans-serif;color:black"> </span><o:p></o:p></p>
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<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span style="font-family:"Helvetica",sans-serif;color:black">> I don’t expect anyone to wear out their rotators tracking PSAT, no,
<br>
> just a simple vertical over a ground plane will do. Either a 19” <br>
> vertical whip over a large 6 foot square ground plane or even better, <br>
> a 58” vertical monopole over the ground plane. This ¾ wavelength <br>
> vertical has almost 7 dBi gain and will pick up signals during the few minutes overhead.</span><o:p></o:p></p>
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<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span style="font-family:"Helvetica",sans-serif;color:black"><br>
I currently have an Icom AH-7000 discone monitoring 145.825 for the ISS digipeter running 24/7.</span><o:p></o:p></p>
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<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span style="font-family:"Helvetica",sans-serif;color:black"> </span><o:p></o:p></p>
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<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span style="font-family:"Helvetica",sans-serif;color:black">Go to <<a href="http://WA8LMF.net/map" target="_blank">http://WA8LMF.net/map</a>> and follow the links there.</span><o:p></o:p></p>
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<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span style="font-family:"Helvetica",sans-serif;color:black"> </span><o:p></o:p></p>
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<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span style="font-family:"Helvetica",sans-serif;color:black">It appears to be not very effective for high-elevation RX. I assume the
<br>
discone has more of a vertical dipole-like pattern that favors the horizon rather than over head, perhaps with slightly fatter lobes than a normal vertical dipole. As I often say, it's equally poor at all frequencies from<br>
50-1000 MHz.....</span><o:p></o:p></p>
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<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span style="font-family:"Helvetica",sans-serif;color:black"> </span><o:p></o:p></p>
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<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span style="font-family:"Helvetica",sans-serif;color:black">I assume the 3/4-wave vertical, over an adequate ground plane, would have multiple lobes with one up-tilted substantially,
and would favor high-angle RX better than the discone. Albeit with still a null at at or near the zenith.</span><o:p></o:p></p>
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<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span style="font-family:"Helvetica",sans-serif;color:black"> </span><o:p></o:p></p>
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<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span style="font-family:"Helvetica",sans-serif;color:black">Any sense how the 3/4-wave compares with the discone?</span><o:p></o:p></p>
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<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span style="font-family:"Helvetica",sans-serif;color:black"> </span><o:p></o:p></p>
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<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span style="font-family:"Helvetica",sans-serif;color:black">I am considering building a Lindenblad antenna (four 1/2-wave dipoles arranged in a horizontal square with each one
tilted about 30 degrees from horizontal) that supposedly creates a nearly hemispherical pattern that is circularly polarized at the zenith. Apparently the FAA uses these to communicate with aircraft anywhere from the horizon to directly overhead.</span><o:p></o:p></p>
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<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span style="font-family:"Helvetica",sans-serif;color:black"> </span><o:p></o:p></p>
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<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span style="font-family:"Helvetica",sans-serif;color:black">Anyone have experience with the Lindenblad for satellite downlinks on 2M? How
<br>
does it compare with the other two above?</span><o:p></o:p></p>
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<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span style="font-family:"Helvetica",sans-serif;color:black"> </span><o:p></o:p></p>
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<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span style="font-family:"Helvetica",sans-serif;color:black">___________________________________</span><o:p></o:p></p>
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<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span style="font-family:"Helvetica",sans-serif;color:black"> </span><o:p></o:p></p>
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<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span style="font-family:"Helvetica",sans-serif;color:black">Stephen H. Smith wa8lmf (at)
<a href="http://aol.com" target="_blank">aol.com</a><br>
Skype: WA8LMF<br>
EchoLink: Node # 14400 [Think bottom of the 2-meter band]<br>
Home Page: <a href="http://wa8lmf.net" target="_blank">http://wa8lmf.net</a></span><o:p></o:p></p>
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<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span style="font-family:"Helvetica",sans-serif;color:black"> </span><o:p></o:p></p>
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<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span style="font-family:"Helvetica",sans-serif;color:black">Live Off-The-Air APRS Activity Maps<br>
<<a href="http://wa8lmf.net/map" target="_blank">http://wa8lmf.net/map</a>></span><o:p></o:p></p>
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<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span style="font-family:"Helvetica",sans-serif;color:black"> </span><o:p></o:p></p>
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<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span style="font-family:"Helvetica",sans-serif;color:black">Long-Range APRS on 30 Meters HF<br>
<<a href="http://wa8lmf.net/aprs/HF_APRS_Notes.htm" target="_blank">http://wa8lmf.net/aprs/HF_APRS_Notes.htm</a>></span><o:p></o:p></p>
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_______________________________________________<br>
aprssig mailing list<br>
<a href="mailto:aprssig@tapr.org" target="_blank">aprssig@tapr.org</a><br>
<a href="http://www.tapr.org/mailman/listinfo/aprssig" target="_blank">http://www.tapr.org/mailman/listinfo/aprssig</a><br>
_______________________________________________<br>
aprssig mailing list<br>
<a href="mailto:aprssig@tapr.org" target="_blank">aprssig@tapr.org</a><br>
<a href="http://www.tapr.org/mailman/listinfo/aprssig" target="_blank">http://www.tapr.org/mailman/listinfo/aprssig</a></span><o:p></o:p></p>
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_______________________________________________<br>
aprssig mailing list<br>
<a href="mailto:aprssig@tapr.org">aprssig@tapr.org</a><br>
<a href="http://www.tapr.org/mailman/listinfo/aprssig" target="_blank">http://www.tapr.org/mailman/listinfo/aprssig</a><o:p></o:p></p>
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