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TLE Elements for PSAT2
by Robert Bruninga 27 Jun '19

27 Jun '19

I've been using object 44348 but PSAT2 is arriving maybe 2 or 3 minutes earler Steve Dimse guesses 44357 below SATNOGS guesses 44354 or 44355 and thinks they see BRICSAT2 9600 bd on 437.600 Bob -----Original Message----- From: aprssig <aprssig-bounces(a)lists.tapr.org> On Behalf Of Steve Dimse Sent: Thursday, June 27, 2019 10:54 PM To: Max Harper via aprssig <aprssig(a)lists.tapr.org> Subject: Re: [aprssig] Designation for PSAT2 > On Jun 25, 2019, at 8:33 AM, Max Harper via aprssig <aprssig(a)lists.tapr.org> wrote: > > Yes, the keplerian elements or TLE is what I'm looking for. I didn't know that AMSAT assigned the numbers like NO-84 so I'll just have to wait for them to assign a designation to PSAT2. > The Falcon Heavy launch was designated 19-036 in NORAD elements, and there were more than 20 satellites from that one launch (designated by a final letter). Watching when IGates receive the beacons, my wild-ass guess is PSAT2 is 19-036U, but it could be R, S, or T, those are still pretty close together. Here is the latest TLE for 19036U 1 44357U 19036U 19178.41227610 .00060436 00000-0 94415-3 0 9996 2 44357 28.5325 187.1376 0389997 127.0282 350.5130 14.97361557 296 NORAD is releasing new keps for these several times a day as they refine them, so even if this is the right bird expect these to be worthless in a couple days. Steve K4HG _______________________________________________ aprssig mailing list aprssig(a)lists.tapr.org http://lists.tapr.org/mailman/listinfo/aprssig_lists.tapr.org

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Rocket Lab launch scrubbed for today (again)
by Wendy and Terry Osborne 27 Jun '19

27 Jun '19

See: https://twitter.com/RocketLab/status/1144327947798454272 Better luck tomorrow. 73, Terry Osborne ZL2BAC

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Satpc32
by Bruce 27 Jun '19

27 Jun '19

I bought a Yaesu G5500 to use during field day this year, we got tired of the arm strong rotor. This is the first time I have used SATPC32 for anything more than AOS-LOS predictions. I still moved the rotor by hand. Have not been able to get the Yaesu cable built to have the LVB tracker control the rotor. May work on that for next year. Used the ICOM IC-9100 and a laptop this year. It worked great to set the frequency for the FM satellites but was horrible for any SSB satellite. I can find myself with the computer turned off. When I tried to use Satpc32, it would jump to somewhere in the passband and no matter how i tried to adjust the radio to find myself, satpc32 had a mind of its own. So, never made an SSB contact. Of course it is more fun to do this during field day with everyone watching. So what is the secret for making Satpc32 see where you have found the sweet spot on the up and down link when you click CAT control instead of doing what it wants? I would have thought it would read the settings from the radio and go from there. After all, it takes me a few seconds to find myself and really easier to adjust for Doppler manually. I wanted to give the automated feature a go for those watching. 73...bruce -- Bruce Paige, KK5DO AMSAT Director Contests and Awards AMSAT Board Member 2016-2020 ARRL Awards Field Checker (WAS, 5BWAS, VUCC), VE Houston AMSAT Net - Wed 0100z on Echolink - Conference *AMSAT* Also live streaming MP3 at http://www.amsatnet.com Podcast at http://www.amsatnet.com/podcast.xml or iTunes Latest satellite news on the ARRL Audio News http://www.arrl.org AMSAT on Twitter http://www.twitter.com/amsat

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PSAT2 simple tracking for wilderness mobiles
by Robert Bruninga 27 Jun '19

27 Jun '19

You don't need no stinkin' computer... I updated my Mobile LEO tracking site to show graphically how PSAT2 orbit works. http://aprs.org/MobileLEOtracking.html Easy to remember. 5 minutes later per day, but a new orbit an hour and a half earlier every other day. (This is approximate... time will tell... might change as we see the effect of the elliptical orbit) If you are in the wilderness, just monitor 145.825 and when you hear PSAT2, then you can easily guess all orbits in the future... Bob, WB4APR -----Original Message----- From: Robert Bruninga <bruninga(a)usna.edu> Sent: Thursday, June 27, 2019 12:13 PM To: 'amsat bb' <amsat-bb(a)amsat.org> Cc: Robert Bruninga <bruninga(a)usna.edu>; 'Steve Dimse' <sdimse(a)gmail.com> Subject: PSAT2 is coming to Northern Latitudes!! PSAT2 is coming to the Northern hemisphere! After reviewing the orbit, it is somewhat time synchronous, meaning each orbit time (at mid northern latitudes) is just 5 minutes later each night. But then a NEW earlier orbit appears 90 minutes earlier every other day. So, by the 4th of july, one week from now, PSAT2 first pass will be as early as 4 PM local time... (in the Northern Hemisphere mid latitudes) And the Apogee moves rapidly, In just two weeks, Apogee will be over the northern hemisphere giving higher latitudes much better access. At launch it was the middle of the night and perigee was in the Northern hemisphere making it only visible for lower latitudes. So things will improve for Northern Hemisphere .... (and then two weeks get worse, etc)... 24 Hour telemetry plots (links to FINDU.COM) are now available on the http://aprs.org/psat2.html page. Bob, WB4APR

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AO-85 update
by Andrew Glasbrenner 27 Jun '19

27 Jun '19

At about 2105UTC today I disabled the auto Safe mode function on AO-85, and turned the transponder on. After verifying it would drop with inactivity, a few QSOs were made before LOS. Currently, the battery voltage is very low and it looks like we have a cell about to give up the ghost. Please do not use the satellite while it is in eclipse, even if you hear it OK. We are not sure what will be usable if and when this cell fails completely. In the meantime, reports to -bb are welcome and helpful. Thanks and 73, Drew KO4MA AMSAT VP Operations

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Re: [amsat-bb] SSTV from PSAT-2 (ionosphere)
by Robert Bruninga 27 Jun '19

27 Jun '19

> Does the 10m uplink have any bounce/skip off the atmosphere? The ionosphere can bend your uplink down so that it does NOT hit PSAT2 when it is low on the horizon. On the other hand, at the horizon, it might also at times bend just enough to extend the footprint. But you wont hear the UHF downlink to know... So I suspect, the ionosphere will be more in the way than not. Just a wild guess. With the same PSK31 transponder having been on 100% for over 2 years with the original PSAT (NO84), there has not been enough users to really know what happens. It also downlinks on the same frequency. (but uplinks in the normal ten meter PSK band at 28.121) so if there are ANY users at all on 10m then they will bring up the transponder. But on PSAT2, the IARU decided all uplinks must be in the satellite band and we had to m ove the uplink to the exclusive 29.481 frequency. Bob -----Original Message----- From: AMSAT-BB <amsat-bb-bounces(a)amsat.org> On Behalf Of Robert MacHale via AMSAT-BB Sent: Thursday, June 27, 2019 1:52 PM To: AMSAT BB <amsat-bb(a)amsat.org>; Scott <scott23192(a)gmail.com> Subject: Re: [amsat-bb] SSTV from PSAT-2 Scott, Just curious -- Does the 10m uplink have any bounce/skip off the atmosphere? Seems like you should be able to "reach" around beyond line of sight at that frequency. Right? Robert MacHaleKE6BLR Ham Radio Licensehttp://spaceCommunicator.club Supporting Boy Scout Merit Badges in Radio and Space Exploration On Thursday, June 27, 2019, 10:48:29 AM PDT, Scott via AMSAT-BB <amsat-bb(a)amsat.org> wrote: That's great, Roland! Thanks for the updates. The elevation is still too low for me to receive any of the 70cm downlink, but I have been hearing some of the 2m APRS on 145.825. It was great news to see the post from Bob regarding the orbit slowly moving north. If you can, please monitor the 70cm downlink for any sign of PSK31 - since Bob announced that the PSK31 transponder was active, I have been transmitting on the 10m uplink on the chance that the satellite hears me even at such low elevations. -Scott, K4KDR ===================================== -----Original Message----- From: Roland Zurmely via AMSAT-BB Sent: Thursday, June 27, 2019 1:31 PM To: AMSAT BB Subject: [amsat-bb] SSTV from PSAT-2 2 new pictures from PSAT-2: <https://www.qsl.net/py4zbz/psat2.htm> 73 de Roland PY4ZBZ _______________________________________________ Sent via AMSAT-BB(a)amsat.org. AMSAT-NA makes this open forum available to all interested persons worldwide without requiring membership. Opinions expressed are solely those of the author, and do not reflect the official views of AMSAT-NA. Not an AMSAT-NA member? Join now to support the amateur satellite program! Subscription settings: https://www.amsat.org/mailman/listinfo/amsat-bb _______________________________________________ Sent via AMSAT-BB(a)amsat.org. AMSAT-NA makes this open forum available to all interested persons worldwide without requiring membership. Opinions expressed are solely those of the author, and do not reflect the official views of AMSAT-NA. Not an AMSAT-NA member? Join now to support the amateur satellite program! Subscription settings: https://www.amsat.org/mailman/listinfo/amsat-bb

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PSK31 from PSAT-2
by Roland Zurmely 27 Jun '19

27 Jun '19

PSAT-2 o bhcb bBaaleev tkqjEap...FkparboxCaa

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SSTV from PSAT-2
by Roland Zurmely 27 Jun '19

27 Jun '19

2 new pictures from PSAT-2: <https://www.qsl.net/py4zbz/psat2.htm> 73 de Roland PY4ZBZ

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PSAT2 is coming to Northern Latitudes!!
by Robert Bruninga 27 Jun '19

27 Jun '19

PSAT2 is coming to the Northern hemisphere! After reviewing the orbit, it is somewhat time synchronous, meaning each orbit time (at mid northern latitudes) is just 5 minutes later each night. But then a NEW earlier orbit appears 90 minutes earlier every other day. So, by the 4th of july, one week from now, PSAT2 first pass will be as early as 4 PM local time... (in the Northern Hemisphere mid latitudes) And the Apogee moves rapidly, In just two weeks, Apogee will be over the northern hemisphere giving higher latitudes much better access. At launch it was the middle of the night and perigee was in the Northern hemisphere making it only visible for lower latitudes. So things will improve for Northern Hemisphere .... (and then two weeks get worse, etc)... 24 Hour telemetry plots (links to FINDU.COM) are now available on the http://aprs.org/psat2.html page. Bob, WB4APR

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SSTV from PSAT-2 rx in Brazil
by Roland Zurmely 27 Jun '19

27 Jun '19

<https://www.qsl.net/py4zbz/psat2.htm> 73 de Roland PY4ZBZ

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