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--></style></head><body bgcolor="white" lang="EN-US" link="blue" vlink="purple"><div class="WordSection1"><p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1f497d">PSAT uses the TinyTrack4 digipeater hardware and it does NOT do callsign substitution like all the other space digipeaters do. </span></p><p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1f497d"> </span></p><p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1f497d">The TinyTrack4 (PSAT) only does call –insertion-. Thus the uplinked VIA ARISS comes down as PSAT,ARISS* (call insertion). Where the same packet sent via the ISS using the path VIA ARISS comes down as RS0ISS* where the “RS0ISS” is –substituted- for the original ARISS.</span></p><p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1f497d"> </span></p><p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1f497d">Sorry this is confusing, but ARISS and APRSAT were always the intended generic Satellite Aliases, just like WIDEn-N is on Earth. The reason that there are both ARISS and APRSAT is because the original radio/TNC on the ISS only could supplrt a single ALIAS. And since it was using ARISS, then the only way to make all APRS satellites generic was then to put ARISS in ALL APRS satellites too. It has been this way since 2001 in all APRS satellites.</span></p><p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1f497d"> </span></p><p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1f497d">These satellites all responded to the ARISS generic alias: PCSAT-1, PCSAT-11, PCSAT-2, PCSAT-12, ANDE-1, ANDE-2, RAFT, and now PSAT.</span></p><p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1f497d"> </span></p><p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1f497d">The problem is that PSAT (with TT4 hardware) does not do call substitution but instead does call INSERTION. That is why you see ARISS* in the downlink and why many filters are not seeing them.</span></p><p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1f497d"> </span></p><p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1f497d">Bob, Wb4APR</span></p><p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1f497d"> </span></p><div><div style="border:none;border-top:solid #b5c4df 1.0pt;padding:3.0pt 0in 0in 0in"><p class="MsoNormal"><b><span style="font-size:10.0pt;font-family:"Tahoma","sans-serif";color:windowtext">From:</span></b><span style="font-size:10.0pt;font-family:"Tahoma","sans-serif";color:windowtext"> aprssig [mailto:<a href="mailto:aprssig-bounces@tapr.org">aprssig-bounces@tapr.org</a>] <b>On Behalf Of </b>Lynn W. Deffenbaugh (Mr) via aprssig<br><b>Sent:</b> Tuesday, June 02, 2015 9:43 PM<br><b>To:</b> TAPR APRS Mailing List<br><b>Subject:</b> Re: [aprssig] PSAT digipeater is ON</span></p></div></div><p class="MsoNormal"> </p><div><p class="MsoNormal">The filter governs what the APRS-IS network will send to you via the Internet. Every packet that is received on an RF port is gated to the APRS-IS if you've kept the default settings in APRSISCE/32, provided of course that you have a valid passcode for your callsign.<br><br>Only Bob can answer what PSAT inserts into a digipeated packet, but yes, I believe it responds to ARISS as a digipeat-able alias.<br><br>Lynn (D) - KJ4ERJ - Author of APRSISCE for Windows Mobile and Win32<br><br>On 6/2/2015 9:31 PM, <a href="mailto:pfbram@comcast.net">pfbram@comcast.net</a> wrote:</p></div><blockquote style="margin-top:5.0pt;margin-bottom:5.0pt"><div><p class="MsoNormal" style="margin-bottom:12.0pt"><span style="font-family:"Arial","sans-serif"">Thanks -- I see I needed to TX a beacon first, since my position (albeit fixed) had staled. But judging from the AOS time, I'll be leaving my APRSIS igate up all night. May as well leave it up the remainder of the week. I have a filter setup as per your instructions here: <a href="http://aprsisce.wikidot.com/doc:satelliteops">http://aprsisce.wikidot.com/doc:satelliteops</a><br><br>Set Configure / General / Add Filter to b/RS0ISS*/W3ADO-1/ARISS d/RS0ISS*/W3ADO-1/ARISS<br><br>Since Bob mentioned that ARISS is one of the aliases, is this filter good as-is? i.e. It won't ignore PSAT?<br><br>Thanks,<br>73, KD0KZE / Paul</span></p><div class="MsoNormal" align="center" style="text-align:center"><span style="font-family:"Arial","sans-serif""><hr size="3" width="100%" align="center" id="zwchr"></span></div><div><p class="MsoNormal" style="margin-bottom:12.0pt"><b><span style="font-family:"Helvetica","sans-serif"">From: </span></b><span style="font-family:"Helvetica","sans-serif"">"Lynn W. Deffenbaugh (Mr) via aprssig" <a href="mailto:aprssig@tapr.org"><aprssig@tapr.org></a><br><b>To: </b>"TAPR APRS Mailing List" <a href="mailto:aprssig@tapr.org"><aprssig@tapr.org></a><br><b>Sent: </b>Tuesday, June 2, 2015 3:11:55 PM<br><b>Subject: </b>Re: [aprssig] PSAT digipeater is ON</span></p><div><p class="MsoNormal"><span style="font-family:"Helvetica","sans-serif"">Send an APRS message to SAT99993 with any body content. This is a pass predictor based on Bob's published TLE from a while ago. It is probably off by up to an hour now, but it'd be better than nothing. I'll keep it current with each TLE that comes from Bob.<br><br>Lynn (D) - KJ4ERJ - Author of APRSISCE for Windows Mobile and Win32<br><br>PS. See also: <a href="http://aprsisce.wikidot.com/doc:satsrv" target="_blank">http://aprsisce.wikidot.com/doc:satsrv</a><br><br>On 6/2/2015 3:39 PM, Paul Bramscher via aprssig wrote:</span></p></div><blockquote style="margin-top:5.0pt;margin-bottom:5.0pt"><div><div><p class="MsoNormal"><span style="font-family:"Arial","sans-serif"">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">ariss.net</a>, <a href="http://aprs.fi">aprs.fi</a>, etc.) providing PSAT tracking? Would also be nice to see some web-based tracking integration with <a href="http://openstreetmap.org">openstreetmap.org</a> -- it's becoming quite polished lately. If time permitted, I'd tinker with that myself.</span></p></div><div><p class="MsoNormal"><span style="font-family:"Arial","sans-serif""> </span></p></div><div><p class="MsoNormal"><span style="font-family:"Arial","sans-serif"">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></p></div><div><p class="MsoNormal"><span style="font-family:"Arial","sans-serif""> </span></p></div><div><p class="MsoNormal"><span style="font-family:"Arial","sans-serif"">73, KD0KZE / Paul</span></p></div><div><p class="MsoNormal"><span style="font-family:"Arial","sans-serif""> </span></p></div><div class="MsoNormal" align="center" style="text-align:center"><span style="font-family:"Arial","sans-serif""><hr size="3" width="100%" align="center" id="zwchr"></span></div><div><p class="MsoNormal"><b><span style="font-family:"Helvetica","sans-serif"">From: </span></b><span style="font-family:"Helvetica","sans-serif"">"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></p><div><p class="MsoNormal"><span style="font-family:"Helvetica","sans-serif""> </span></p></div><p class="MsoNormal"><span style="font-family:"Helvetica","sans-serif"">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></p><div><p class="MsoNormal"><span style="font-family:"Helvetica","sans-serif""> </span></p></div><p class="MsoNormal"><span style="font-family:"Helvetica","sans-serif"">this is a fantastic milestone in the APRS technology wave; Congrats to Bob, et al involved in landing this project.</span></p><div><p class="MsoNormal"><span style="font-family:"Helvetica","sans-serif""> </span></p></div><p class="MsoNormal"><span style="font-family:"Helvetica","sans-serif"">Thanks</span></p><div><p class="MsoNormal"><span style="font-family:"Helvetica","sans-serif""> </span></p></div><p class="MsoNormal"><span style="font-family:"Helvetica","sans-serif"">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></p><div><p class="MsoNormal"><span style="font-family:"Helvetica","sans-serif""> </span></p></div><p class="MsoNormal"><span style="font-family:"Helvetica","sans-serif""><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></p><div><p class="MsoNormal"><span style="font-family:"Helvetica","sans-serif""> </span></p></div><p class="MsoNormal"><span style="font-family:"Helvetica","sans-serif"">On 6/2/2015 9:38 AM, Robert Bruninga via aprssig wrote:<br>> APRS activists:<br>></span></p><div><p class="MsoNormal"><span style="font-family:"Helvetica","sans-serif""> </span></p></div><p class="MsoNormal"><span style="font-family:"Helvetica","sans-serif"">> 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></p><div><p class="MsoNormal"><span style="font-family:"Helvetica","sans-serif""> </span></p></div><p class="MsoNormal"><span style="font-family:"Helvetica","sans-serif""><br>I currently have an Icom AH-7000 discone monitoring 145.825 for the ISS digipeter running 24/7.</span></p><div><p class="MsoNormal"><span style="font-family:"Helvetica","sans-serif""> </span></p></div><p class="MsoNormal"><span style="font-family:"Helvetica","sans-serif"">Go to <a href="http://WA8LMF.net/map" target="_blank"><http://WA8LMF.net/map></a> and follow the links there.</span></p><div><p class="MsoNormal"><span style="font-family:"Helvetica","sans-serif""> </span></p></div><p class="MsoNormal"><span style="font-family:"Helvetica","sans-serif"">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></p><div><p class="MsoNormal"><span style="font-family:"Helvetica","sans-serif""> </span></p></div><p class="MsoNormal"><span style="font-family:"Helvetica","sans-serif"">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></p><div><p class="MsoNormal"><span style="font-family:"Helvetica","sans-serif""> </span></p></div><p class="MsoNormal"><span style="font-family:"Helvetica","sans-serif"">Any sense how the 3/4-wave compares with the discone?</span></p><div><p class="MsoNormal"><span style="font-family:"Helvetica","sans-serif""> </span></p></div><p class="MsoNormal"><span style="font-family:"Helvetica","sans-serif"">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></p><div><p class="MsoNormal"><span style="font-family:"Helvetica","sans-serif""> </span></p></div><p class="MsoNormal"><span style="font-family:"Helvetica","sans-serif"">Anyone have experience with the Lindenblad for satellite downlinks on 2M? How <br>does it compare with the other two above?</span></p><div><p class="MsoNormal"><span style="font-family:"Helvetica","sans-serif""> </span></p></div><p class="MsoNormal"><span style="font-family:"Helvetica","sans-serif"">___________________________________</span></p><div><p class="MsoNormal"><span style="font-family:"Helvetica","sans-serif""> </span></p></div><p class="MsoNormal"><span style="font-family:"Helvetica","sans-serif"">Stephen H. Smith wa8lmf (at) <a href="http://aol.com">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></p><div><p class="MsoNormal"><span style="font-family:"Helvetica","sans-serif""> </span></p></div><p class="MsoNormal"><span style="font-family:"Helvetica","sans-serif"">Live Off-The-Air APRS Activity Maps<br> <a href="http://wa8lmf.net/map" target="_blank"><http://wa8lmf.net/map></a></span></p><div><p class="MsoNormal"><span style="font-family:"Helvetica","sans-serif""> </span></p></div><p class="MsoNormal"><span style="font-family:"Helvetica","sans-serif"">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></p><div><p class="MsoNormal"><span style="font-family:"Helvetica","sans-serif""> </span></p></div><p class="MsoNormal"><span style="font-family:"Helvetica","sans-serif""><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><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></p></div><div><p class="MsoNormal"><span style="font-family:"Arial","sans-serif""> </span></p></div></div><p class="MsoNormal"><span style="font-family:"Helvetica","sans-serif""><br><br></span></p><pre>_______________________________________________</pre><pre>aprssig mailing list</pre><pre><a href="mailto:aprssig@tapr.org" target="_blank">aprssig@tapr.org</a></pre><pre><a href="http://www.tapr.org/mailman/listinfo/aprssig" target="_blank">http://www.tapr.org/mailman/listinfo/aprssig</a></pre></blockquote><p class="MsoNormal"><span style="font-family:"Helvetica","sans-serif""><br><br>_______________________________________________<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">http://www.tapr.org/mailman/listinfo/aprssig</a></span></p></div><p class="MsoNormal"><span style="font-family:"Arial","sans-serif""> </span></p></div></blockquote><p class="MsoNormal"> </p></div></body></html>