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

Orbital lifetime of ARRISat-1
by DeYoung James 07 Aug '11

07 Aug '11

Greetings, If you were a member of AMSAT-NA you would receive the AMSAT Journal and could have read the article I wrote for the last issue concerning the predicted lifetime of ARRISat-1. The paper presented predictions for up to a maximum release height of 370-km and there is enough information to extrapole to the higher release height as realized. The recent reboosts put the release height somewhat higher but I would guess a lifetime of about one year. The actual Sun-state influences the atmospheric densities of the future that ARRISat-1 passes through will control the actual lifetime. Even tho I am all packed up to move to my retirement home I will write a short update to that paper using the actual release height and submit it to the Journal. I would encourage everyone (if you aren't a member already) to join AMSAT-NA and read the journal there is a lot of good stuff there. Jim, N8OQ

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ISS Packets QRM ARISSat-1
by Mike Schaffer 07 Aug '11

07 Aug '11

ISS packets are coming through the 2M downlink on 145.950 FM interfering with reception of the SSTV and voice transmissions. There were two ISS packet signals noted on Saturday, August 7 at 1223 - 1243 UTC at AOS - San Luis Potosi, Mexico to LOS - New York/Vermont border. Both packet signals occurred while over the U.S.A. Not sure if the source of the packet signals are from the 145.800 worldwide crossband FM repeater downlink channel or the 145.990 packet uplink channel. Mike Schaffer KA3JAW Tampa, Florida EL87SU

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ARISSAT-1 qrm fm ISS ?
by Andre' v Deventer 07 Aug '11

07 Aug '11

This pass just gone 09h58 UTC and the previous one at 08h22 UTC both had packet or APRS ? over the 145.950 Arissat SSTV. This last pass was just LOS when the packet tx was again and only ISS was still visable at my QTH. I have recordingds but no decode of that PKT yet. 73 andre ZS2BK

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SatPC32
by Bato, Andras 07 Aug '11

07 Aug '11

Hi Eric ON4HF, I wonder which version of SatPC32 are you using? I have put your lines into DOPPLER.SQF file but it does not do any change! Isn't there any mistake in those lines? Otherwise nasa.all file does not contain RADIOSCAF-B data! It can be found in amateur.txt list only! gl de ha6nn Andras

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Re: ARISSat: strong QRM due to ISS
by andy thomas 07 Aug '11

07 Aug '11

Yes, I also heard packet bursts while listening to ARISSat at 0140 utc and around 0500 utc with the doppler corrected. I didn't decode them though. The doppler correction applies both to the ISS (approximately) and the satellite. andy, G0SFJ

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ARISSat: strong QRM due to ISS
by Mike Rupprecht 07 Aug '11

07 Aug '11

All, we had strong QRM on 145.950 MHz due to the ISS. Most of the ARISSat SSTV images and voice messages were disturbed. Just wondering why we can hear ISS packets on that frequency. 22:33 RS0ISS>CQ>UI,R,F0 (1200 baud):>ARISS - International Space Station 22:35 RS0ISS>CQ>UI,R,F0 (1199 baud):>ARISS - International Space Station 73, Mike DK3WN

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VS: VS: ARISSatTLM
by Jari Koivurinne 07 Aug '11

07 Aug '11

> > > I was also having trouble getting telemetry. Signal was quite strong > and > all indicators was within range. The telemetry and CW stopped twice > within > pass. CW was decoded but maybe the deep QSB made some impact to the > telemetry. > I have 2x 17 el horizontal yagis, FT-847 and Realtek AC97 audio system. > Sampe rate was 44.1 kHz. > Next time I try Edirol UA-1 USB sound card. Have to set alarm clock at > 4 am > local time as this is the only time ISS is well above horizon... :-) > > And please try the ARISSatTLM software and decode some frames as it is > no > help if you just say you can hear some noise... > > -jari oh3uw > Hi all, It was a soundcard issue. With Edirol UA-1 I was able to decode 13 frames although I have no audio to monitor, just the TLM-spectrum and ARISSat went silent twice. Those were long minutes... Anyway, now I have to examine what makes Realtek audio crab... It used to play fine, even EME with WSJT. 73' jari oh3uw

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ANS-219 AMSAT Weekly Bulletins
by Lee McLamb 06 Aug '11

06 Aug '11

AMSAT NEWS SERVICE ANS-219 ANS is a free, weekly, news and information service of AMSAT North America, The Radio Amateur Satellite Corporation. ANS reports on the activities of a worldwide group of Amateur Radio operators who share an active interest in designing, building, launching and communicating through analog and digital Amateur Radio satellites. Please send any amateur satellite news or reports to: ans-editor(a)amsat.org In this edition: * AMSAT-NA In Orbit Again with ARISSat-1 * NASA Education Express Message - ARISSat-1/KEDR Deployment * ARISSat-1/KEDR Deployed on August 3 - Signals Received * ARISSat-1/KEDR Reception Report Certificates * AMSAT-UK Issues ARISSat-1/KEDR BPSK Reception Challenge * AMSAT History: 40th Anniversary of First Synchronous Satellite Proposal * ARISS Status - 1 August 2011 SB SAT @ AMSAT $ANS-219.01 AMSAT-NA In Orbit Again with ARISSat-1 AMSAT News Service Bulletin 219.01 From AMSAT HQ SILVER SPRING, MD. August 7, 2011 To All RADIO AMATEURS BID: $ANS-219.01 AMSAT President Barry Baines, WD4ASW, observed, "Welcome to a new era as AMSAT returns to space with ARISSat-1/KEDR. I encour- age all hams, SWLs, educators, and experimenters to enjoy the unique opportunity presented by this mission to learn about ama- teur radio in space, enhance and improve your station, and hone your operating skills as you try out all of this satellite's features." Barry continues, "ARISSat-1/KEDR marks a new type of satellite which has captured the attention of the national space agencies around the world for the unique educational opportunity we have been able to design, launch, and now operate. By designing an educational mission aligned with NASA's Science, Technology, Engineering, and Mathematics goals amateur radio operators around the world can now enjoy a new satellite in orbit." ARISSat-1/KEDR Project Manager, Gould Smith, WA4SXM said, "Dozens of amateur radio volunteers, AMSAT, ARRL, NASA, and Energia have teamed up for this successful mission to bring you the most unique and innovative amateur radio satellite mission flying 220 miles above your QTH at 17,500 mph! Congratulations to all who made ARISSat-1 successful!" Continuing, Gould said, "ARRISat-1/KEDR has been developed, built, and tested by a remarkable team of radio amateurs. As the Project Manager for ARISSat-1/KEDR these past three years I have had the opportunity to work with these creative people to get to where we are now ... IN ORBIT!" Watch the video of ARISSat-1/KEDR Project Manager Gould Smith WA4SXM's interview on WBIR TV about the new Amateur Radio satelite ARISSat-1 which 'takes distance learning to new heights': http://tinyurl.com/3fc8f9n (Soutgate ARC News) ARISSat-1 Project Web Page: http://www.arissat1.org ARISSat-1 Operational News: http://www.amsat.org How to receive ARISSat-1: http://www.amsat.org/amsat-new/ARISSat/ARISSatHowTo.php [ANS thanks AMSAT President Barry Baines, WD4ASW and ARISSat-1/KEDR Project Manager, Gould Smith, WA4SXM for the above information] /EX SB SAT @ AMSAT $ANS-219.02 NASA Education Express Message - ARISSat-1/KEDR Deployment AMSAT News Service Bulletin 219.02 From AMSAT HQ SILVER SPRING, MD. August 7, 2011 To All RADIO AMATEURS BID: $ANS-219.02 The NASA Education Office posted news of the ARISSat-1/KEDR deploy- ment in their August 4 Education EXPRESS message. The Express message below was sent to 18,516 EXPRESS subscribers and to 1,285,892 NASA Twitter account subscribers. Using social media services to expand the range for NASA education messages has increased the total audi- ence to approximately 1,304,408 people. (Yes, that's 1.3 million people). [NASA EXPRESS Message follows] ARISSat-1 Satellite Launched A satellite with amateur radio capabilities and a student-designed experiment was released into orbit around Earth on Aug. 3, 2011, during a spacewalk outside the International Space Station. The sat- ellite is transmitting signals containing information that students around the world can access. ARISSat-1, which stands for Amateur Radio on the International Space Station Satellite-1, contains a student-designed experiment and other equipment that students can use to learn more about space and space exploration. The rectangular spacecraft is covered by six solar panels that will charge the batteries in the satellite for about six months as it orbits Earth. Spoken telemetry values, with data such as temp- erature and battery life, are intended to promote science and mathem- atics education by encouraging school children to listen to the satel- lite, track its progress and plot the changes. The project website provides free downloadable software that can be used to decode the data. In addition to data, the satellite will trans- mit 24 pre-recorded greetings in 15 different languages -- French, Spanish, German, English and Chinese, to name a few. Check out the ARISSat-1 website at http://arissat1.org/ for information on data transmissions, contests and student activities. Questions about ARISSat-1 should be directed to teachers(a)arissat1.org. NASA Education listserv: http://www.nasa.gov/education/express NASA Twitter: http://twitter.com/nasa NASA Blogs: http://blogs.nasa.gov/cm/newui/blog/blogs.jsp NASA Education Express Blog: http://blogs.nasa.gov/cm/blog/educationexpress [ANS thanks AMSAT President Barry Baines, WD4ASW for forwarding this news to the AMSAT News Service] /EX SB SAT @ AMSAT $ANS-219.03 ARISSat-1/KEDR Deployed on August 3 - Signals Received AMSAT News Service Bulletin 219.03 From AMSAT HQ SILVER SPRING, MD. August 7, 2011 To All RADIO AMATEURS BID: $ANS-219.03 ARISSat-1/KEDR was deployed from the ISS during EVA-29 on Wednesday, August 3 by Cosmonaut/Flight Engineers Sergei Volkov and Alexander Samokutyaev. First reported signals were received by JR8LWY with copy of the telemetry beacon as the satellite passed over Japan. Full operational capability of ARISSat-1/KEDR was quickly confirmed after initial concern of a missing or damaged 70cm receiver antenna on the satellite. 145.950 MHz FM Downlink - OPERATIONAL ------------------------------------- FM transmissions will cycle between a voice ID as RS01S, select tele- metry values, 24 international greeting messages in 15 languages and SSTV images. One of the messages will be a conversation between Yuri Gagarin and ground control. If you successfully receive the SSTV transmissions, you are invited to upload your picture to to the ARISS SSTV Gallery: http://www.amsat.org/amsat/ariss/SSTV/ 435 MHz - 145 MHz Linear Transponder - OPERATIONAL -------------------------------------------------- The linear transponder operates in Mode U/V (70 cm Up, 2m Down). It is an 16 KHz wide inverting passband and the convention will be to TX LSB on the 435 MHz uplink and RX USB on the 145 MHz downlink. The full status of the 70cm antenna is unknown however reports of contacts and full uplink-downlink operation are being received: + Drew, KO4MA reported on August 4, "I was able to hear myself with as little as 1 watt on the 0425Z pass". This equates to an EIRP of as little as 26 watts which can be easily produced by even modest satellite stations. Audio with a picture were posted at: http://www.youtube.com/watch?v=0AFyZNAbOeA + John, K8YSE reported completing an unscheduled contact with KD8CAO on August 5 at 1125z. Signals were weak but readable. + Masa, JN1GKZ reported from Tokyo receiving his downlink signal during an eclipse pass on August 5, 1233-1240z with a clear and loud downlink though the elevation was less then 5 degrees. 145.919 MHz CW Beacons - OPERATIONAL ------------------------------------ The CW transmissions will be callsign ID RS01S, select telemetry, and callsigns of people actively involved with the ARISS program. 145.920 MHz SSB BPSK-1000 Telemetry - OPERATIONAL ------------------------------------------------- AMSAT needs your telemetry from ARISSat-1/KEDR. Since there are no "Whole Orbit Data" storage mechanisms onboard ARISSat-1/KEDR, your submissions are the only way for AMSAT to collect the spacecraft telemetry and KURSK experiment results. + Recorded file ARISSat-1/KEDR and Kursk telemetry CSV files (in the ARISSatTLM folder) can be sent as an e-mail attachment to: telemetry(a)arissattlm.org + If you are running ARISSatTLM and receiving the signal "live" from ARISSat-1/KEDR, please enable the telemetry forwarding option. + The latest telemetry can be seen LIVE on your computer or cell phone at: http://www.arissattlm.org/mobile [ANS thanks the ARISSat-1/KEDR Team for the above information] /EX SB SAT @ AMSAT $ANS-219.04 ARISSat-1/KEDR Reception Report Certificates AMSAT News Service Bulletin 219.04 From AMSAT HQ SILVER SPRING, MD. August 7, 2011 To All RADIO AMATEURS BID: $ANS-219.04 When you receive the downlink signal from ARISSat-1/KEDR you are invited to send your report to the following e-mail boxes. You will receive a PDF certificate by e-mail. Students and school groups are especially welcome! We look forward to your report! Your report must contain the following information: 1) The signal you received: a) the secret word*, b) an SSTV image, or, c) telemetry data 2) Your name or group name 3) The date/time of reception 4) Your e-mail address of where to send your certificate. You will receive a PDF certificate via email. Here are the e-mail boxes to send your reports: Secret word* contest to: secretword(a)arissat1.org SSTV image to: sstvreport(a)arissat1.org Telemetry data to: tlmreport(a)arissat1.org (either digital or voice report of the data you received) Received BPSK telemetry and .CSV files should continue to be sent to: telemetry(a)arissattlm.org. * Those who do hear the secret word or call sign please do not put it out to the world. That would ruin the contest for those still waiting for their station to be in range. You can find the details of the ARISSat-1/KEDR radio frequencies, links to telemetry decoding software and mission details on-line at: + http://www.amsat.org + http://arissat1.org ARISSat-1/KEDR can be accessed on these frequencies: + 145.950 MHz FM Downlink + 435 MHz - 145 MHz Linear Transponder + 145.919 MHz CW Beacon + 145.920 MHz SSB BPSK-1000 Telemetry The latest telemetry can be seen LIVE on your computer or cell phone at: http://www.arissattlm.org/mobile TRACK STATUS on OSCAR STATUS PAGE --------------------------------- David Carr, KD5QGR has added ARISSat-1/KEDR to the list of satel- lites at the popular "Live OSCAR Satellite Status Page" at: http://oscar.dcarr.org/ You are invited to submit your reports on this page. [ANS thanks the ARISSat-1/KEDR Team for the above information] /EX SB SAT @ AMSAT $ANS-219.05 AMSAT-UK Issues ARISSat-1/KEDR BPSK Reception Challenge AMSAT News Service Bulletin 219.05 From AMSAT HQ SILVER SPRING, MD. August 7, 2011 To All RADIO AMATEURS BID: $ANS-219.05 ARISSat-1 was deployed from the ISS on August 3. It has a composite VHF downlink that will easily fit into the FUNcube Dongle (FCD) re- ceive spectrum. The 145.920 MHz telemetry is 1000 bps BPSK and can, of course, also be received with a normal SSB 2 metre receiver. The signal levels from ARISSat-1 should be similar to those we expect from the AMSAT-UK FUNcube-1 satellite (and also eventually from UKube-1) and the AMSAT-UK team are keen to discover what will be the minimum and best type of antennas for schools to use with a FUNcube Dongle (FCD) Software Defined Radio (SDR). Therefore user experience with the ARISSat-1 signals will be very valuable in making this determination. To encourage everyone to receive the 145.920 MHz BPSK ARISSat-1 tele- metry signal AMSAT-UK are offering a FUN reward for listeners! There are a number of categories for this challenge -they include: + The first FCD user, from each continent, who can post a spectrum recording of the received signal together with evidence of decoding the data using the ARISSatTLM software and of sending it to the ARISSat data warehouse. + The first non-FCD user, from each continent, who can provide evidence of having decoded the signals and of sending it to the ARISSat data warehouse. + The listener, using a FCD or not, who can demonstrate satisfactory reception of the telemetry in the same ways as described above, using the "smallest" possible receive antenna. The actual closing date for this part of the challenge will be announced later. + All other entrants who can demonstrate that they have been having FUN! Please submit your "entries", including your location, station details (including FCD serial number where applicable), postal address and reports to: g0auk(a)amsat.org [ANS thanks AMSAT-UK and Trevor, M5AKA for the above information] /EX SB SAT @ AMSAT $ANS-219.06 AMSAT History: 40th Anniversary of First Synchronous Satellite Proposal AMSAT News Service Bulletin 219.06 From AMSAT HQ SILVER SPRING, MD. August 7, 2011 To All RADIO AMATEURS BID: $ANS-219.06 July 24 marked the 40th anniversary of AMSAT's original SYNCART proposal to NASA, in 1971, to fly a Synchronous Amateur Radio Transponder on NASA's Applications Technology Satellite ATS-G. NASA's response to our proposal appeared to be favorable, but unfortunately NASA cancelled the ATS-G mission. The SYNCART proposal is on AMSAT-DL's web site at for those who would like to read it. It gives the justification why NASA should fly it for free, listing a number of amateur experiments and applications, most of which would still apply today. The 1971 WARC on Space Technology was held around the same time (June 7 - July 17, 1971, in Geneva). That's the ITU conference that established the amateur-satellite service and allocated frequencies to it. Several satellite manufacturers are now advertising that they host pay- loads aboard their satellite platforms. Think how it would transform amateur radio if we could get SYNCART packages aboard one or more of them! Read a copy of the original proposal at: http://www.amsat-dl.org/images/stories/satellites/syncart/sync.pdf AMSAT-DL article (in German) at: http://www.amsat-dl.org/index.php/news-mainmenu-97/185-syncart [ANS thanks AMSAT Past President Perry Klein, W3PK for this information] /EX SB SAT @ AMSAT $ANS-219.07 ARISS Status - 1 August 2011 AMSAT News Service Bulletin 219.07 From AMSAT HQ SILVER SPRING, MD. August 7, 2011 To All RADIO AMATEURS BID: $ANS-219.07 1. Successful ARISS Contact with United Space School On Saturday, July 30 a successful Amateur Radio on the International Space Station (ARISS) contact was held between students at United Space School in Seabrook, Texas and Mike Fossum, KF5AQG on the ISS. Station W6SRJ in California provided the connection. The United Space School is a once a year session of high school students that meets in the NASA/Clear Lake Area. Students come from around the world for a two week session, during which they stay with local host families while being mentored by astronauts, engineers, and scientists to design a mission to Mars as their team project. Class sessions are held at the University of Houston at Clear Lake. Students are given lessons on amateur radio and through the ARISS contact they learn firsthand what spaceflight is like. They will use this knowledge in their team project, which they will present to the Houston space community at the end of their session. 2. Astronaut Training Status Mike Hopkins, KF5LJG is scheduled for an ARISS Basic Ops class on Monday, August 1. Hopkins is slated to fly with Expedition 37 in September 2013. 3. EE Times Runs ARISSat Blog EE (Electronic Engineering) Times is running a blog called "Chips in Space - The Building of an Amateur Satellite" that will run over the next few weeks describing how the amateur radio satellite, ARISSat-1 was designed and built. The first entry has been posted: http://www.eetimes.com/electronics-blogs/chips-in-space/4218140/The-Buildin… an-Amateur-Satellite-1 [ANS thanks Carol, KB3LKI, for the above information] /EX In addition to regular membership, AMSAT offers membership in the President's Club. Members of the President's Club, as sustaining donors to AMSAT Project Funds, will be eligible to receive additional benefits. Application forms are available from the AMSAT Office. 73, This week's ANS Editor, Lee McLamb, KU4OS ku4os at amsat dot org

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ARISSat-1 over West Malaysia 07 Aug 0202 UTC
by Sion Chow Q. C. (9W2QC) 06 Aug '11

06 Aug '11

Dear All, Had a 20 degree elevation pass in sunlight of ARISSat-1 over West Malaysia at 0202 UTC, 07 August 2011. Managed to copy and forward 21 telemetry and kursk frames to the ARISSatTLM server, and this time I had SATPC32 adjust the doppler in 10 Hz steps. Although the doppler correction seems to be a bit too frequent, but it made the CW signal stay on the yellow marker fairly accurately. However, due to fading only 21 frames were copied. I guess the copying would be better if the fading rate is reduced. Still experimenting with this mode, and hope that the above will be useful to someone. Also noticed from previous observations that it is difficult to get a lock when the satellite is in low power eclipse mode, as the TX gets turned off too quickly. Have a great weekend to all. 73, Sion Chow Q. C., 9M2CQC, Also: WQ2C /HL1, 9V1QC, JG1XHM, ex: 9W2QC, AB3IO

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Arissat-1 TPL today
by PY5LF 06 Aug '11

06 Aug '11

Hi Signal of Arissat-1 TPL over Brazil today ; http://www.youtube.com/watch?v=Pyc-OZuV4OA Suddenly the signal almost disappear and after some minutes , back very weak . 73 PY5LF LUCIANO FABRICIO Curitiba-PR-Brazil GG54jm <http://www.qrz.com/db/py5lf> http://www.qrz.com/db/py5lf

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