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Finally copied BricSat2
by Bob KD7YZ 25 Aug '19

25 Aug '19

I've been trying to snag this one automatically and last nite finally did with my simple M2 crossed yagis on a SPID 1:Fm USNAP1-1 To APOFF Via ARISS <UI pid=F0 Len=11 >[21:17:47] >Bank0-SAFE 1:Fm USNAP1-1 To APOFF Via ARISS <UI pid=F0 Len=34 >[21:18:13] T#854,762,000,000,000,669,01000100 -- 73 Bob KD7YZ AMSAT LM #901

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Looking for info on AO-6
by Bill Gaylord 24 Aug '19

24 Aug '19

Hello, I am trying to collect information about AO-6. The reasons for this is much like AO-7 it (according to what I could find) due to a battery issue. Which means there may be a possibility of it coming back to life eventually like AO-7. (Depending on how it was hooked up internally.) I was wondering if anyone knew it’s the frequencies used by it or if any documentation about its internals exist. (Like to actually know if it was setup in a way that allowed it to come back.) Thanks, William Gaylord

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Re: [amsat-bb] doppler sqf files
by Mineo Wakita 24 Aug '19

24 Aug '19

This update file is at the top of my site. http://www.ne.jp/asahi/hamradio/je9pel/satslist.htm JE9PEL, Mineo Wakita

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Re: [amsat-bb] AO-7 Mode B Questions (difficulty getting in)
by Roy Dean 24 Aug '19

24 Aug '19

M2 Leo pack on standard cross boom, G5400b. ARR pre-amps and MFJ diplexers, LMR240 and 240UF feedlines. https://forums.qrz.com/index.php?threads/ao-7-tx-power.668185/ This thread has most of the details, as well as a screen grab of this afternoon's attempt. I'm wondering if I am actually getting in just fine, but the RTL-SDR dongle is just too pathetic to pick it up. But if that's the case, then it would mean that the other signals are blasting into the transponder. Did anybody have a qso stomped on this afternoon by "K3RLD testing"? --Roy K3RLD > My thought was desense from your transmitter. What's the antenna setup? I > think I saw that answer on QRZ or somewhere, but don't recall. 73, Drew > KO4MA

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doppler sqf files
by Nicholas Mahr KE8AKW 24 Aug '19

24 Aug '19

Hi Bob! I use Nader's ST2NH's Dopppler .SQF file I found on his website when I first setup SATPC32. This one is about 1 year old so your gonna have to edit some of the new satellites and modes in but this will do the majority of the work for you! http://st2nh-blogger.blogspot.com/2018/10/dopplersqf-for-satpc32.html?spref… 73 Nick KE8AKW

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doppler sqf files
by 73 Bob W7LRD 24 Aug '19

24 Aug '19

where can I find a listing of all the doppler sqf files for our sats? 73 Bob W7LRD

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Doppler.SQF files
by 73 Bob W7LRD 24 Aug '19

24 Aug '19

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Buoy & PicoBalloons on South Atlantic open seas
by Amsat Argentina 24 Aug '19

24 Aug '19

AMSAT-LU is testing a South Atlantic Sea Buoy and 2 PicoBallons transmiting WSPR+APRS, objectives are courses analysis and strength of winds and sea currents as well as HF/VHF propagation and APRS satellites operation. The Sea Buoy launch is planned for January 2020. Details/Pictures: http://amsat.org.ar?f=buoy WSPR live Track: http://lu7aa.org.ar/wspr.asp PicoBalloons forecast: http://lu7aa.org.ar/pronostico.asp >From now on transmitting on HF/VHF/Satellite at Buenos Aires. We appreciate your reception. 73, LU7AA, AMSAT Argentina | | Libre de virus. www.avg.com |

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Re: [amsat-bb] AO-7 Mode B Questions (difficulty getting in)
by Roy Dean 24 Aug '19

24 Aug '19

Yes. I know that a strong uplink can overpower the transponder, so I started on low power and worked my way all the way up to the high power setting with almost no difference (at least that I could see). Existing QSO's saw no issues whatsoever during my Tx'ing. We've got a 77deg pass here in less than an hour, I'll try and get a screen grab of the waterfall (maybe I'll record the whole passband). --Roy K3RLD > Do you see the other strong signals while you are transmitting as well? > 73, Drew KO4MA

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AO-7 Mode B Questions (difficulty getting in)
by Roy Dean 24 Aug '19

24 Aug '19

Hi all. I'm hoping for some suggestions to help me "get in" to AO-7 mode B. So far, my experience is as follows (on any pass, regardless of elevation): No matter what my output setting is on my IC-706MKIIG, I can only just barely get into the transponder. Even on a good day, when I am seeing multiple strong CW and SSB QSO's happening on the waterfall, my uplink can only just barely be seen, let alone heard. The 706MKIIG ouputs 20W on UHF, and checking with a wattmeter - it seems to be spot on (using FM - could SSB be performing differently?). I've hooked up my M2 UHF cross yagi to an SWR meter, and it comes in at less than 1.5. I can get into all the other linears with relative ease. My UHF crossed dipole is supposed to be RHCP (if I connected everything correctly), and I believe that the 70cm Rx antenna on AO-7 is also CP, correct? But is it RH or LH? And does anybody know of a RHCP UHF downlink on a satellite that I can use to to positively confirm my UHF cross yagi polarization? Any other suggestions welcome. FYI - I am using an RTL-SDR.com V3 dongle on receive, with GQRX controlled by Gpredict - this setup actually works pretty well for me on all the other linears, believe it or not! I am positive that this is NOT an Rx issue on my end because I can see other strong QSOs in the waterfall - just not my own. So I believe this is an issue with my Tx. --Roy K3RLD

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