Re: [amsat-bb] Dnepr Upper Stage Apogee
I noticed that after the last Dnepr launch, it's upper stage was raised to an apogee of 1454 km, putting it in a 1454 km x 609 km orbit with a 97.9 degree inclination, in order to avoid collision with any of the 37 satellites it released. There are, however, no legally binding requirements regarding debris mitigation. International agreement requires that objects in orbits lower than 2000 km must exit that region within 25 years after end of mission. Objects in orbits above 2000 km can remain there for longer than 25 years in a disposal orbit, but only a few missions have the excess propulsion capacity to reach that orbit. Some US Government missions have disposed of upper stages to a higher orbit to avoid the need to issue a Notice to Airmen concerning the falling debris hazard. At least one polar orbiting weather satellite launch sent the upper stage on an Earth escape trajectory for disposal. It would seem that the Dnepr orbit is still too low to satisfy the international requirement. In the case of amateur transponder satellites they can be assumed to have an operation lifetime of 40+ years (think OSCAR-7), as I recall debris mitigation suggests re-entry within 25 years of the end of mission. For amateur transponder satellites this might imply 65 years in orbit. NASA is considering a revision to this policy to specify a total lifetime in LEO of no more than 30 years regardless of mission lifetime. Other interesting facts from Scott Hull's July 1 colloquium at NASA Goddard include: 1. There are about 22,000 objects larger than 10 centimeters in the NORAD database, an estimated 500,000 objects between 1 and 10 centimeters which are too small to track, and millions of objects less than one centimeter. The Chinese Fengyun 1C disintegration in 2007 produced about 2850 trackable pieces of debris. The new S-band space fence will be capable of tracking objects larger than 5 centimeters when it becomes operational in 2018. 2. There are about 4000 dead satellites on orbit, and about 1000 active satellites. 3. The debris population has peaks at 750, 900 and 1400 km. You would have to go to Saturn to find a worse debris environment than that of a 750 km Low Earth Orbit. Science missions can be difficult when you live in a minefield. 4. Most spacecraft disintegrations are caused by battery and pressure vessel explosions. Nickel hydrogen batteries are most susceptible to explosion but NiCd and lithium ion batteries can also explode. A lithium ion battery must NEVER be recharged after it has been fully drained. Rocket bodies left in GTO are subject to explosion when the perigee height dips low enough to begin atmospheric heating, which can cause remaining fuel in the tanks to explode. Modern mission design requires that batteries be disconnected from solar arrays and fully discharged and pressure tanks vented to space at the end of the satellite mission. 5. Space is still pretty big. We have been lucky so far. Statistics predict another eight or nine major collisions in the next 40 years with just the current population of debris. 6. The movie Gravity did have a science adviser, and they did get a few things right, namely that there were no loud sounds when the debris struck the shuttle, and objects with lower area to mass ratio arrived first. Nevertheless most NASA folks still consider the movie to be a comedy. If you have the DVD there is an additional 20 minute documentary video about orbital debris on the disk. For more information see http://orbitaldebris.jsc.nasa.gov/faqs.html#6 73, Dan Schultz N8FGV ___ Sent via AMSAT-BB@amsat.org. Opinions expressed are those of the author. Not an AMSAT-NA member? Join now to support the amateur satellite program! Subscription settings: http://amsat.org/mailman/listinfo/amsat-bb
Re: [amsat-bb] Lituanicasat-1 Working Well
Hi Ted, Add the following line to Doppler.SQF somewhere in the data section (use paste and copy): LO-78,435175.5,145950,FM,FM,NOR,0,0 I don't know whether the frequencies are exact. To check that (while the sat is in range) click the SatPC32 control V to V+, then open menu CAT and with the Downl. Corr. controls correct the downlink frequency and save the found value in Doppler.SQF. You may also add the following line to AmsatNames.SQF: 39569 98067EN LO-78 Then the program will display LITUANICASAT-1 as LO-78 if you use a Keps file that still uses LITUANICASAT-1 as satellite name, for example the Celestrak file cubesat.txt. Both files can be opened and edited from the SatPC32 menu ?, Auxiliary Fies. For detailed instructions read the FAQs file (sect. 1a) with a tutorial by Wayne Estes, W9AE. 73s, Erich, DK1TB Am 05.07.2014 22:28, schrieb Ted: Question: In Satpc32, I have LO-78 showing as a selection but there are no frequencies showing in the CAT window. I did the 'update keps' function but no freqs showing. Is there some other file that needs to be updated? Any help appreciated Ted K7TRK -Original Message- From:amsat-bb-boun...@amsat.org [mailto:amsat-bb-boun...@amsat.org] On Behalf o...@papays.com Sent: Saturday, July 05, 2014 11:21 AM To:amsat-bb@amsat.org Subject: [amsat-bb] Lituanicasat-1 Working Well Lituanicasat-1 was on for the 1755utc pass over Ohio today. N1PCE was the only station heard and worked. It's at 310km now so it won't be up for much longer. Work it while you can. The next pass starts for EN91 at 1928utc and goes through the middle of the US. The footprint is not very big but if you are in it, you'll be able to work it. It fades as it spins but the rate is fairly fast so you can easily make qso's on it. Make sure you have the latest keps as they are changing rapidly as the bird slows down. LITUANICASAT-1 1 39569U 98067EN 14186.49377965 .00413101 0-0 13237-2 0 3882 2 39569 51.6393 352.4578 0004635 267.8164 186.1070 15.89402291 19933 145.95 up and 435175.5 down 67Hz PL. 73, John K8YSE ___ Sent viaamsat...@amsat.org. Opinions expressed are those of the author. Not an AMSAT-NA member? Join now to support the amateur satellite program! Subscription settings:http://amsat.org/mailman/listinfo/amsat-bb ___ Sent viaamsat...@amsat.org. Opinions expressed are those of the author. Not an AMSAT-NA member? Join now to support the amateur satellite program! Subscription settings:http://amsat.org/mailman/listinfo/amsat-bb ___ Sent via AMSAT-BB@amsat.org. Opinions expressed are those of the author. Not an AMSAT-NA member? Join now to support the amateur satellite program! Subscription settings: http://amsat.org/mailman/listinfo/amsat-bb
Re: [amsat-bb] Dnepr Upper Stage Apogee
Thanks for that Dan, can you just confirm that the millions of items of debris that NASA was referring to are naturally occurring chunks of rock ? As you mention Weapons Testing in space has produced thousands of debris pieces in orbits around 800 km and below. 73 Trevor M5AKA On Sunday, 6 July 2014, 8:03, Daniel Schultz n8...@usa.net wrote: I noticed that after the last Dnepr launch, it's upper stage was raised to an apogee of 1454 km, putting it in a 1454 km x 609 km orbit with a 97.9 degree inclination, in order to avoid collision with any of the 37 satellites it released. There are, however, no legally binding requirements regarding debris mitigation. International agreement requires that objects in orbits lower than 2000 km must exit that region within 25 years after end of mission. Objects in orbits above 2000 km can remain there for longer than 25 years in a disposal orbit, but only a few missions have the excess propulsion capacity to reach that orbit. Some US Government missions have disposed of upper stages to a higher orbit to avoid the need to issue a Notice to Airmen concerning the falling debris hazard. At least one polar orbiting weather satellite launch sent the upper stage on an Earth escape trajectory for disposal. It would seem that the Dnepr orbit is still too low to satisfy the international requirement. In the case of amateur transponder satellites they can be assumed to have an operation lifetime of 40+ years (think OSCAR-7), as I recall debris mitigation suggests re-entry within 25 years of the end of mission. For amateur transponder satellites this might imply 65 years in orbit. NASA is considering a revision to this policy to specify a total lifetime in LEO of no more than 30 years regardless of mission lifetime. Other interesting facts from Scott Hull's July 1 colloquium at NASA Goddard include: 1. There are about 22,000 objects larger than 10 centimeters in the NORAD database, an estimated 500,000 objects between 1 and 10 centimeters which are too small to track, and millions of objects less than one centimeter. The Chinese Fengyun 1C disintegration in 2007 produced about 2850 trackable pieces of debris. The new S-band space fence will be capable of tracking objects larger than 5 centimeters when it becomes operational in 2018. 2. There are about 4000 dead satellites on orbit, and about 1000 active satellites. 3. The debris population has peaks at 750, 900 and 1400 km. You would have to go to Saturn to find a worse debris environment than that of a 750 km Low Earth Orbit. Science missions can be difficult when you live in a minefield. 4. Most spacecraft disintegrations are caused by battery and pressure vessel explosions. Nickel hydrogen batteries are most susceptible to explosion but NiCd and lithium ion batteries can also explode. A lithium ion battery must NEVER be recharged after it has been fully drained. Rocket bodies left in GTO are subject to explosion when the perigee height dips low enough to begin atmospheric heating, which can cause remaining fuel in the tanks to explode. Modern mission design requires that batteries be disconnected from solar arrays and fully discharged and pressure tanks vented to space at the end of the satellite mission. 5. Space is still pretty big. We have been lucky so far. Statistics predict another eight or nine major collisions in the next 40 years with just the current population of debris. 6. The movie Gravity did have a science adviser, and they did get a few things right, namely that there were no loud sounds when the debris struck the shuttle, and objects with lower area to mass ratio arrived first. Nevertheless most NASA folks still consider the movie to be a comedy. If you have the DVD there is an additional 20 minute documentary video about orbital debris on the disk. For more information see http://orbitaldebris.jsc.nasa.gov/faqs.html#6 73, Dan Schultz N8FGV ___ Sent via AMSAT-BB@amsat.org. Opinions expressed are those of the author. Not an AMSAT-NA member? Join now to support the amateur satellite program! Subscription settings: http://amsat.org/mailman/listinfo/amsat-bb ___ Sent via AMSAT-BB@amsat.org. Opinions expressed are those of the author. Not an AMSAT-NA member? Join now to support the amateur satellite program! Subscription settings: http://amsat.org/mailman/listinfo/amsat-bb
Re: [amsat-bb] Dnepr Upper Stage Apogee
Good information Dan, We learn a lot! I think that whole amateur radio satellite comunity are looking forward to have a chance and bring back HEO or MEO satellite. Another like FO-29 for me was good enough :) Best regards, Fabiano CT7ABD On Sun, Jul 6, 2014 at 8:03 AM, Daniel Schultz n8...@usa.net wrote: I noticed that after the last Dnepr launch, it's upper stage was raised to an apogee of 1454 km, putting it in a 1454 km x 609 km orbit with a 97.9 degree inclination, in order to avoid collision with any of the 37 satellites it released. There are, however, no legally binding requirements regarding debris mitigation. International agreement requires that objects in orbits lower than 2000 km must exit that region within 25 years after end of mission. Objects in orbits above 2000 km can remain there for longer than 25 years in a disposal orbit, but only a few missions have the excess propulsion capacity to reach that orbit. Some US Government missions have disposed of upper stages to a higher orbit to avoid the need to issue a Notice to Airmen concerning the falling debris hazard. At least one polar orbiting weather satellite launch sent the upper stage on an Earth escape trajectory for disposal. It would seem that the Dnepr orbit is still too low to satisfy the international requirement. In the case of amateur transponder satellites they can be assumed to have an operation lifetime of 40+ years (think OSCAR-7), as I recall debris mitigation suggests re-entry within 25 years of the end of mission. For amateur transponder satellites this might imply 65 years in orbit. NASA is considering a revision to this policy to specify a total lifetime in LEO of no more than 30 years regardless of mission lifetime. Other interesting facts from Scott Hull's July 1 colloquium at NASA Goddard include: 1. There are about 22,000 objects larger than 10 centimeters in the NORAD database, an estimated 500,000 objects between 1 and 10 centimeters which are too small to track, and millions of objects less than one centimeter. The Chinese Fengyun 1C disintegration in 2007 produced about 2850 trackable pieces of debris. The new S-band space fence will be capable of tracking objects larger than 5 centimeters when it becomes operational in 2018. 2. There are about 4000 dead satellites on orbit, and about 1000 active satellites. 3. The debris population has peaks at 750, 900 and 1400 km. You would have to go to Saturn to find a worse debris environment than that of a 750 km Low Earth Orbit. Science missions can be difficult when you live in a minefield. 4. Most spacecraft disintegrations are caused by battery and pressure vessel explosions. Nickel hydrogen batteries are most susceptible to explosion but NiCd and lithium ion batteries can also explode. A lithium ion battery must NEVER be recharged after it has been fully drained. Rocket bodies left in GTO are subject to explosion when the perigee height dips low enough to begin atmospheric heating, which can cause remaining fuel in the tanks to explode. Modern mission design requires that batteries be disconnected from solar arrays and fully discharged and pressure tanks vented to space at the end of the satellite mission. 5. Space is still pretty big. We have been lucky so far. Statistics predict another eight or nine major collisions in the next 40 years with just the current population of debris. 6. The movie Gravity did have a science adviser, and they did get a few things right, namely that there were no loud sounds when the debris struck the shuttle, and objects with lower area to mass ratio arrived first. Nevertheless most NASA folks still consider the movie to be a comedy. If you have the DVD there is an additional 20 minute documentary video about orbital debris on the disk. For more information see http://orbitaldebris.jsc.nasa.gov/faqs.html#6 73, Dan Schultz N8FGV ___ Sent via AMSAT-BB@amsat.org. Opinions expressed are those of the author. Not an AMSAT-NA member? Join now to support the amateur satellite program! Subscription settings: http://amsat.org/mailman/listinfo/amsat-bb ___ Sent via AMSAT-BB@amsat.org. Opinions expressed are those of the author. Not an AMSAT-NA member? Join now to support the amateur satellite program! Subscription settings: http://amsat.org/mailman/listinfo/amsat-bb
Re: [amsat-bb] Lituanicasat-1 Working Well
Finally had first QSO on this bird, My friend Luis CT2GOY who live 2km from my house :) https://www.youtube.com/watch?v=ogHOTN0JB4U 73 Fabiano CT7ABD On Sun, Jul 6, 2014 at 8:25 AM, Erich Eichmann erich.eichm...@t-online.de wrote: Hi Ted, Add the following line to Doppler.SQF somewhere in the data section (use paste and copy): LO-78,435175.5,145950,FM,FM,NOR,0,0 I don't know whether the frequencies are exact. To check that (while the sat is in range) click the SatPC32 control V to V+, then open menu CAT and with the Downl. Corr. controls correct the downlink frequency and save the found value in Doppler.SQF. You may also add the following line to AmsatNames.SQF: 39569 98067EN LO-78 Then the program will display LITUANICASAT-1 as LO-78 if you use a Keps file that still uses LITUANICASAT-1 as satellite name, for example the Celestrak file cubesat.txt. Both files can be opened and edited from the SatPC32 menu ?, Auxiliary Fies. For detailed instructions read the FAQs file (sect. 1a) with a tutorial by Wayne Estes, W9AE. 73s, Erich, DK1TB Am 05.07.2014 22:28, schrieb Ted: Question: In Satpc32, I have LO-78 showing as a selection but there are no frequencies showing in the CAT window. I did the 'update keps' function but no freqs showing. Is there some other file that needs to be updated? Any help appreciated Ted K7TRK -Original Message- From:amsat-bb-boun...@amsat.org [mailto:amsat-bb-boun...@amsat.org] On Behalf o...@papays.com Sent: Saturday, July 05, 2014 11:21 AM To:amsat-bb@amsat.org Subject: [amsat-bb] Lituanicasat-1 Working Well Lituanicasat-1 was on for the 1755utc pass over Ohio today. N1PCE was the only station heard and worked. It's at 310km now so it won't be up for much longer. Work it while you can. The next pass starts for EN91 at 1928utc and goes through the middle of the US. The footprint is not very big but if you are in it, you'll be able to work it. It fades as it spins but the rate is fairly fast so you can easily make qso's on it. Make sure you have the latest keps as they are changing rapidly as the bird slows down. LITUANICASAT-1 1 39569U 98067EN 14186.49377965 .00413101 0-0 13237-2 0 3882 2 39569 51.6393 352.4578 0004635 267.8164 186.1070 15.89402291 19933 145.95 up and 435175.5 down 67Hz PL. 73, John K8YSE ___ Sent viaamsat...@amsat.org. Opinions expressed are those of the author. Not an AMSAT-NA member? Join now to support the amateur satellite program! Subscription settings:http://amsat.org/mailman/listinfo/amsat-bb ___ Sent viaamsat...@amsat.org. Opinions expressed are those of the author. Not an AMSAT-NA member? Join now to support the amateur satellite program! Subscription settings:http://amsat.org/mailman/listinfo/amsat-bb ___ Sent via AMSAT-BB@amsat.org. Opinions expressed are those of the author. Not an AMSAT-NA member? Join now to support the amateur satellite program! Subscription settings: http://amsat.org/mailman/listinfo/amsat-bb ___ Sent via AMSAT-BB@amsat.org. Opinions expressed are those of the author. Not an AMSAT-NA member? Join now to support the amateur satellite program! Subscription settings: http://amsat.org/mailman/listinfo/amsat-bb
[amsat-bb] CAPE-2 over Brazil
19:35 W5UL-15W5ULUI,C,F0: +W5UL,CAPE-2,4,GR,201301281948CST,5091mV,01005,4,29C,24C,ulcape.org# 19:37 W5UL-15W5ULUI,C,F0: W5UL,5208,899,5184,6,5202,58,5202,GR,001,46,25,ulcape.org# http://www.qsl.net/py4zbz/cape.htm#r Satélite CAPE Satélite CAPE-2 = LO-75 por PY4ZBZ em 28-11-2013 rev. 06-07-2014 Recepção do primeiro beacon em AX25. Primeira execução de comandos co... View on www.qsl.net Preview by Yahoo 73 de Roland PY4ZBZ GH70un ___ Sent via AMSAT-BB@amsat.org. Opinions expressed are those of the author. Not an AMSAT-NA member? Join now to support the amateur satellite program! Subscription settings: http://amsat.org/mailman/listinfo/amsat-bb
[amsat-bb] AO7 B-A
Hi AO7 start on mode B then at 21:43 UTC change tom mode A , going to NA. 73 PY5LF Luciano Fabricio Curitiba-PR-BR GG54jm http://www.qrz.com/db/PY5LF ___ Sent via AMSAT-BB@amsat.org. Opinions expressed are those of the author. Not an AMSAT-NA member? Join now to support the amateur satellite program! Subscription settings: http://amsat.org/mailman/listinfo/amsat-bb
[amsat-bb] SatPC32 via Wine on Ubuntu
Some of you may have been following my attempts to continue to use a vacation house P4 that had been running XP (still is but its painful to watch and wait). I've been trying to familiarize myself with Linux using Ubunbtu. I got FlDigi to work fine and WSJTX as well as a good log program called CQrlog. I got stumped though with my satellite operation. I tried with helpd to get GPredict running but it (or Hamlib) was still buggy on the FT947 even with the latest version. I then, with help, installed Wine and dowloaded my favorite program - SatPC32. To my surprise it worksalmost. I don't seem to have Frequency adjustment at the radio by using the CAT controls in the software. I also can't change the mode to CW through the software. Is anyone using SatPC32 on a Linux platform? If so I'd like to connect tap your brain. 73 and hope to see you on the birds from my portable location at FN21 Rick W2JAZ ___ Sent via AMSAT-BB@amsat.org. Opinions expressed are those of the author. Not an AMSAT-NA member? Join now to support the amateur satellite program! Subscription settings: http://amsat.org/mailman/listinfo/amsat-bb
Re: [amsat-bb] SatPC32 via Wine on Ubuntu
Hi Rick, Is the radio doing anything when you click on C- (going to C+) to enable the CAT system? If not, then you probably don't have the serial port side of things set up yet. When you boot the system, Linux will create a set of device files in the /dev directory. One of these, probably /dev/ttyS0, is your real serial port. Wine needs to know how to map the DOS / Windows Com ports to these device files, and does that with a set of links in ~/.wine/dosdevices. If you go to that directory and type ls -l, you should see something like this: lrwxrwxrwx 1 greg users 10 Dec 31 2011 com1 - /dev/ttyS0 lrwxrwxrwx 1 greg users 10 Dec 15 2013 com2 - /dev/ttyS1 lrwxrwxrwx 1 greg users 10 Dec 8 2013 com3 - /dev/ttyS2 lrwxrwxrwx 1 greg users 10 Dec 8 2013 com4 - /dev/ttyS3 If those files don't exist, you can create them with the command: ln -l /dev/ttyS0 com1 Restart SatPC32 and see if that gets some activity out of the radio. If the files do exist (and SatPC32 is configured to use the right one), then it might be that your user permissions don't allow you to access the serial ports. You can either run the program as root (not recommended), or change your user permissions to include dialout or UUCP in the list of groups (I forget which is the right one). Good luck, Greg KO6TH Richard Lawn wrote: Some of you may have been following my attempts to continue to use a vacation house P4 that had been running XP (still is but its painful to watch and wait). I've been trying to familiarize myself with Linux using Ubunbtu. I got FlDigi to work fine and WSJTX as well as a good log program called CQrlog. I got stumped though with my satellite operation. I tried with helpd to get GPredict running but it (or Hamlib) was still buggy on the FT947 even with the latest version. I then, with help, installed Wine and dowloaded my favorite program - SatPC32. To my surprise it worksalmost. I don't seem to have Frequency adjustment at the radio by using the CAT controls in the software. I also can't change the mode to CW through the software. Is anyone using SatPC32 on a Linux platform? If so I'd like to connect tap your brain. 73 and hope to see you on the birds from my portable location at FN21 Rick W2JAZ ___ Sent via AMSAT-BB@amsat.org. Opinions expressed are those of the author. Not an AMSAT-NA member? Join now to support the amateur satellite program! Subscription settings: http://amsat.org/mailman/listinfo/amsat-bb ___ Sent via AMSAT-BB@amsat.org. Opinions expressed are those of the author. Not an AMSAT-NA member? Join now to support the amateur satellite program! Subscription settings: http://amsat.org/mailman/listinfo/amsat-bb
Re: [amsat-bb] ARTSAT1: INVADER will re-try to send Cosmic Poem
Dear all, Hello! Today, we are going to send the Generative Cosmic Poem over TH at 2014-7-7 07:05 UTC. https://dl.dropboxusercontent.com/u/1336163/ScrSav037.jpg All the best, Akihiro Kubota, ARTSAT Project On Jul 6, 2014, at 9:58 AM, Akihiro Kubota akihiro.kub...@nifty.com wrote: Dear all, Hello, we are join to send Generative Comsic Poem from INVADER(CO-77) EU: 2014-07-06 04:56:00 UTC https://dl.dropboxusercontent.com/u/1336163/ScrSav035.jpg 2014-07-06 06:30:00 UTC https://dl.dropboxusercontent.com/u/1336163/ScrSav036.jpg If you can receive them please repot to http://api.artsat.jp/report/ Sorry for the early in the morning and thanks in advance. All the best, Akihiro Kubota/ARTSAT Project On Jun 30, 2014, at 3:38 PM, Akihiro Kubota akihiro.kub...@nifty.com wrote: Dear all, Hello, we are going to re-try to send Cosmic Poem over North and South America as follows. North America: 2014-06-30 20:25:00 UTC https://dl.dropboxusercontent.com/u/1336163/ScrSav021.jpg South America: 2014-07-01 20:55:00 UTC https://dl.dropboxusercontent.com/u/1336163/ScrSav028.jpg Thanks in advance. Best, Akihiro Kubots, ARTSAT Project On Jun 26, 2014, at 10:55 PM, ji1izr/Masahiro Sanada ji1izr_1...@nifty.com wrote: Dear all, The ARTSAT Project team scheduled to send Cosmic Poem over Europe and North Am erica. Please refer to the Facebook: https://www.facebook.com/events/1450646185187636/permalink/1457939504458304/ The announcement is: ***begin of the referred*** Schedule for the first and second performances in this weekend! The First Performance, Europe and North Africa 2014-06-28 07:26 (UTC) June 28 2014, 09:26 (CEST) over San Sebastian (Spain) Covered major cities: London, Berlin, Paris, Madrid, Dublin, Copenhagen, Wars aw, Marrakesh, Tunis The Second Performance, East/Central USA and East Canada 2014-06-28 21:26 (UTC) June 28 2014, 17:26 (EDT) over Ohio (USA) Covered major cities: New York, Chicago, Toronto, Montreal, Miami, Houston, K ansas City * the schedule is subject to change. ***end of the referred*** You can hear the sample of the poem here: http://artsat.jp/en/cosmic-poem-draft-2 de ji1izr/Masahiro ** Masahiro Sanada de ji1izr Hiratsuka-city Kanagawa,Japan ji1izr_1...@nifty.com ji1...@jarl.com ji1...@jamsat.or.jp web: http://ji1izr.atnifty.com/ blog: http://ji1izr.air-nifty.com/ ** ___ Sent via AMSAT-BB@amsat.org. Opinions expressed are those of the author. Not an AMSAT-NA member? Join now to support the amateur satellite program! Subscription settings: http://amsat.org/mailman/listinfo/amsat-bb ___ Sent via AMSAT-BB@amsat.org. Opinions expressed are those of the author. Not an AMSAT-NA member? Join now to support the amateur satellite program! Subscription settings: http://amsat.org/mailman/listinfo/amsat-bb
