March 2011 - AMSAT-BB - mailman.amsat.org

Re: PVC
by Mike1234 03 Mar '11

03 Mar '11

To add to the thread I have a friend who has a semi repair shop. He has run PVC through out the shop for compressed air. He puts 150 psi through the PVC for air tools. I have played with PVC for a 2mtr mast. It worked pretty well. I want to use it in smaller sections for my satellite antennas which I don't to put up very high until I learn about the whole operation then I will place it on a roof with better material. I have the Yaesu 5500 rotor and that thing to me is heavy to lug around. Once it is on a roof with better materials it stays there until something breaks. I hope this helps. Mike N8GBU

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RADAR QRM on FO-29 video on YouTube
by Andrew Glasbrenner 03 Mar '11

03 Mar '11

http://www.youtube.com/watch?v=lPSvVEjrTzY This is just a short video of the severe RADAR QRM I had today while trying to work FO-29. This is about as bad as I've ever seen it here in Central Florida. Please ignore my son coughing in the background (he's getting better fast), along with one of my male cockatiels crooning to the female one. :-) 73, Drew KO4MA

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Re: Kysat keps
by G0MRF＠aol.com 03 Mar '11

03 Mar '11

I just hope NORAD release the official post launch keps via celestrack. Unlike the last Alaska launch. Never did get to the bottom of why that decision was made. Hopefully not a trend. David G0MRF In a message dated 03/03/2011 21:10:54 GMT Standard Time, summit496(a)live.com writes: Just by looking at the keps you can tell they are wrong, compare with another sat you can tell. I couldnt get it to work either. Is there anyone here who can help? Kevin KF7MYK

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KYSAT-1 TLE errors ?
by PA3GUO 03 Mar '11

03 Mar '11

Dave, Using Ryans LXS I see that (like so often) the TLEs do not have a correct checksum: Ryans XLS says it should be 1 99999U 00000 11063.43259919 0.00000000 00000-0 00000-0 0 0000 2 99999 97.9564 8.4412 0007658 67.0214 113.6793 14.77265551000005 And not as on their website: 1 99999U 00000 11063.43259919 0.00000000 00000-0 00000-0 0 0000 2 99999 97.9564 8.4412 0007658 67.0214 113.6793 14.77265551000000 Half of my SW here ignores the checksum, other half simply does not show the satellite. This is why I also had to correct the TLEs. Ps: feel free to double-check, I am not a TLE expert Henk, PA3GUO I just tried using the TLEs off of the KySat-1 page, but couldn't get them to work, nothing showed up. http://ssl.engineering.uky.edu/missions/orbital/kysat1/operations/ Dave - KB1PVH -----Oorspronkelijk bericht----- Van: Ryan Caron [mailto:[email protected]] Verzonden: zondag 26 december 2010 20:29 Aan: pa3guo(a)amsat.org CC: PA3GUO; amsat-bb(a)amsat.org Onderwerp: Re: [amsat-bb] O/OREOS TLE errors ? Hank (and the -bb) Attached is the spreadsheet previously mentioned spreadsheet to fix TLEs checksums. I've rewritten it since what I was using was still a tedious operation and I didn't want to distribute that to the community. This should be much better, though you still need to remove any leading spaces in the lines. It appears that O/OREOS' TLEs on their website are OK now, possibly because SpaceTrack is publishing now. My apologies for not getting this out sooner; we'll have to wait for the next launch to try this out. During the fog-of-war in the days after launch, I find there are often multiple TLEs for the same satellite. In this case I like to change the IDs so I can have them all loaded in GPredict simultaneously. This spreadsheet will verify that the IDs are the same for both lines, and of course regenerate the checksums. This spreadsheet was created with OpenOffice 3.2.1, and I've exported it to Excel and checked it with MS Office XP and appears to work fine. Please let me know if there are any problems. Happy holidays and 73, Ryan KB1LKI On 11/30/10 11:33 AM, PA3GUO wrote: > Hi Ryan > > Thanks a lot for your detailed reply. > > Would you be so kind to share that spreadsheet (XLS?) with me ? > In the coming days I really need (well, would higly appreciate) to > have working TLEs - especially also for Nanosail. > > Best of course would be if the O/OREOS/Nanasail team could fix this > prior to posting them on the web :-) > > Thanks > Henk > > > ---- Ryan Caron<rcaron(a)gmail.com> schreef: >> The O/OREOS TLEs consistently do not have valid checksums (last digit >> of each line). I submitted a comment about this on their website but >> I have not heard back. The correct checksums are 2& 3, and not the >> 6& 5 that is listed. >> >> If, by the time you read this, the posted TLEs are not 6& 5, then >> the TLEs have been updated and you'll have to generate new checksums. >> The formula is a sum of all numerical characters on the line, >> including the line number, treating minus signs as a one and >> everything else (letters, >> +, spaces) as a 0. Then take modulus 10 of the sum (i.e. last digit >> +of >> the sum). Look it up on wikipedia for more details. >> >> I've made a spreadsheet to fix this, but it is still a manual >> operation for me (got to write a script at some point). Some programs >> disregard the the checksum, which is why HRD& the website still work >> and your tracking tool doesn't. Predict/GPredict, my tools of choice, >> require valid checksums, making proper TLEs a pet peeve of mine. I >> don't know what NOVA's up to. >> >> In terms of "swarm spread" (i.e. how small delta-V between spacecraft >> that shared the same ride, which in this case is just done by >> compressed springs, translates into spatial differences), 35 minutes >> of separation is pretty high for just 10 days after launch. With all >> the latest TLEs from the three websites, I show O/OREOS being 3.5 >> minutes ahead of RAX, and RAX being a 1.33 minutes ahead of FAST1/2. >> >> Ryan, KB1LKI >> >> On 11/30/10 4:54 AM, amsat-bb-request(a)amsat.org wrote: >>> ------------------------------ >>> >>> Message: 4 >>> Date: Mon, 29 Nov 2010 22:55:16 +0100 >>> From: PA3GUO<pa3guo(a)upcmail.nl> >>> Subject: [amsat-bb] O/OREOS TLE errors ? >>> To:[email protected] >>> Message-ID:<19767175.1291067716437.JavaMail.root(a)viefep21.chello.at> >>> Content-Type: text/plain; charset=utf-8 >>> >>> Dear all, >>> >>> I keep on having troubles with the O/OREOS kepler sets. >>> RAX and the others are fine. >>> >>> With todays version (as from the O/OREOS dashboard on the web) >>> - NOVA gives O/OREOS just a bit behind RAX >>> - HamRadioDeluxe give O/OREOS 35 minutes behind RAX >>> - The O/OREOS web (dashboard graphic) shows O/OREOS 35 minutes >>> behind RAX >>> - My private antenna tracking tool does not recognize the keplerset >>> of O/OREOS >>> >>> Anyone else has experienced this (and maybe even a solution) ? >>> Henk >>> -- >>> Henk, PA3GUO >>> > > -- > Henk, PA3GUO >

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Kysat keps
by Kevin Deane 03 Mar '11

03 Mar '11

Just by looking at the keps you can tell they are wrong, compare with another sat you can tell. I couldnt get it to work either. Is there anyone here who can help? Kevin KF7MYK

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April 12 - Yuri & ARISSat-1
by Clint Bradford 03 Mar '11

03 Mar '11

Yes, we are all disappointed that the deployment of ARISSat-1 has been delayed - in direct violation of handshakes and written agreements. But that does not mean that we should ignore the historical event that April 12 is bringing us: the 50th anniversary of Yuri Gagarin's space walk. This is an opportunity for us. I have signed up with one organization to throw a little party at my house ... http://tinyurl.com/YURI-K6LCS We'll have exclusive videos to share with attendees (even one from Bill Nye, the Science Guy!), history to relate, and a tentative pass of the ISS here in Southern California at 9:41PM on the 12th to hopefully monitor ARISSat-1. The YurisNight.net people ( http://yurisnight.net/partylist/?partyid=1381 ) have put together quite a Web site. "We" can learn a lot by perusing their promotional materials and press/media releases. I would love for us to be thinking along the same lines for our future satellite announcements and launches. There's not a huge cost involved to put together such media alerts and promotional pieces. We DO have professional public relations people among us. As I read through the Sponsorship Kit and Media Kit on YurisNight.net, I envisioned how such materials would benefit AMSAT and our cause ... Our friends across the pond have put together another great Yuri resource - http://www.yurigagarin50.org/ SO, at least in the Bradford household in Mira Loma CA US, we are CELEBRATING on April 12. I will be sending my local newspapers a media alert on the ARISSat-1 project and Yuri's anniversary (one newspaper will print it - the other is a 50/50 proposition). I am using the date to promote AMSAT and ARISSat-1. There will be live video from our back yard transmitted to the planet via UStream if we are able to hear ARISSat-1 that evening. We ALL can "use" this date to promote everything we're here for: AMSAT, amateur radio, and the future of manned space travel. Clint Bradford, K6LCS 909-241-7666 http://www.work-sat.com

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KySat-1
by Dave Webb KB1PVH 03 Mar '11

03 Mar '11

I just tried using the TLEs off of the KySat-1 page, but couldn't get them to work, nothing showed up. http://ssl.engineering.uky.edu/missions/orbital/kysat1/operations/ Dave - KB1PVH Sent from my Verizon Wireless DROID X

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AMSAT Fox News
by JoAnne Maenpaa 03 Mar '11

03 Mar '11

Hello Everyone, The http://www.amsat.org web page news has been updated to introduce AMSAT Fox. -- 73 de JoAnne K9JKM k9jkm(a)amsat.org Editor, AMSAT News Service

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Broken Sats
by Kevin Deane 03 Mar '11

03 Mar '11

Does anyone moniter the sats that are broken to see if they come back to life? Like the RS-15 and now my fav HO-68 is broke now, thats the first one I talked on. Amsat says AO-7 semi operational but seems to work just fine. Anyway was wondering if there were any that have a glimmer of hope that I might moniter in my case of absolute bordation??? Kevin KF7MYK

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Re: Ham Radios on Cuises
by Clint Bradford 03 Mar '11

03 Mar '11

>> ... the web page should also suggest ... So someone researches all the cruise lines, and creates this Web site. John Doe posts a story on how he was able to obtain permission to use ham gear on board - despite the "ham gear prohibited" policy. But Mark Jones can NOT get his equipment aboard on the same cruise line - for WHATEVER reason the cruise line states. You have NO RECOURSE. Like someone is going to say, "Well, the AMSAT Official Bulletin Board of Anecdotal Cruise Experiences Database" says I CAN bring my stuff on board ... The only result of that is embarrassment to whomever has published this "information." WHAT IS THE POINT of such a database? It can used for absolutely nothing that matters. There is NO CRUISE LINE that states, "Ham radio gear gladly accepted by all passengers." For OBVIOUS safety and security reasons, the written policies prohibit ham gear. There's so much happening in this hobby right now ... the U.S.' H.R. 607 proves we have not educated our elected officials as to what we accomplish on a daily basis on the air ... we have the 50th anniversary of manned space flight just a few weeks away ... we have the activation of ARISSat-1 also on April 12 ... so many projects and topics that MATTER. Clint Bradford, K6LCS

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