November 2012 - AMSAT-BB - mailman.amsat.org

Re: Allocations in L-band
by Greg Dolkas 21 Nov '12

21 Nov '12

Right, sorry. The question was mode L but my brain read mode S... Greg KO6TH Sent from my trusty HP iPAQ. -----Original Message----- From: "i8cvs" <domenico.i8cvs(a)tin.it> To: "Greg D" <ko6th.greg(a)gmail.com>; APBIDDLE(a)MAILAPS.ORG Cc: "AMSAT-BB" <amsat-bb(a)amsat.org> Sent: 11/21/12 6:23 AM Subject: Re: [amsat-bb] Re: Allocations in L-band Hi Greg, KO6TH For the history no OSCAR satellite carried on a Mode-L Beacon. OSCAR-7 carried on a Mode-S beacon on 2304.1 MHz built by the San Bernardino Microwave Society but it was never officially turned on because of international treaty constraints (bandplan) so that it was not receiving the autorization by the FCC 73" de i8CVS Domenico ----- Original Message ----- From: "Greg D" <ko6th.greg(a)gmail.com> To: <APBIDDLE(a)MAILAPS.ORG> Cc: "AMSAT-BB" <amsat-bb(a)amsat.org> Sent: Wednesday, November 21, 2012 5:31 AM Subject: [amsat-bb] Re: Allocations in L-band > I believe it was Oscar-7. > > Greg KO6TH > > > Alan wrote: > > Someone years ago told me that one of the early amateur satellites had a > > mode-L beacon, but because the rules changed, it was never turned on. I > > haven't been able to verify or disprove this story. > > > > Alan > > WA4SCA > > > > > > -----Original Message----- > > From: amsat-bb-bounces(a)amsat.org [mailto:[email protected]] On > > Behalf Of Trevor . > > Sent: Tuesday, November 20, 2012 4:10 AM > > To: amsat-bb(a)amsat.org > > Subject: [amsat-bb] Re: Allocations in L-band > > > > --- On Mon, 19/11/12, Richard Ferryman<g4bbh(a)btinternet.com> wrote: > >> Just curious - Can someone enlighten me as to why there is no allocation > >> for satellite downlinks in L-band (at least in the bandplans I have seen). > >> There are uplinks around 1267 to 1269 MHz. Is it due to possibility of > >> interference with commercial/military/aeronautical systems? > > I believe it dates back to a WARC conference in about 1971. Prior to that > > the Amateur Service had I believe been able to use any Amateur Frequencies > > just as they can still do for that other form of Space Communication - Moon > > Bounce (EME). > > > > Wayne Green W2NSD does make references to the loss of satellite frequencies > > a few times in his column in 73 Magazine from that era, see 73 Mag archive > > at http://archive.org/search.php?query=73%20magazine > > >

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Allocations in L-band
by Richard Ferryman 21 Nov '12

21 Nov '12

Just curious - Can someone enlighten me as to why there is no allocation for satellite downlinks in L-band (at least in the bandplans I have seen). There are uplinks around 1267 to 1269 MHz. Is it due to possibility of interference with commercial/military/aeronautical systems? Dick G4BBH .

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Re: Allocations in L-band
by Trevor . 21 Nov '12

21 Nov '12

I had a recollection that it was UOSAT-1 (OSCAR-9) that was planned to have a 23cm L-Band beacon and so I emailed Cliff G4BGP/G8FDH who has sent me the following: -- It had been proposed that a 23cm beacon be carried on board UOSAT. However there was a legal problem to be overcome. A request was made to the World Administrative Conference in 1977 (WARC-77), to permit such a beacon to be operated, from space. Unfortunately the outcome of WARC77 prevented operation of the 23cm beacon... Consequently it was agreed that a 13cm beacon should also be considered. -- 73 Trevor M5AKA

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KSC photos?
by Gould Smith 20 Nov '12

20 Nov '12

Anyone posted any KSC photos from our incredible trip yet? 73, Gould

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Re: Allocations in L-band
by Rsoifer＠aol.com 20 Nov '12

20 Nov '12

Trevor, Richard, et al,, WARC 71 (actually WARC-ST 71) allocated no 23cm frequencies at all to the amateur-satellite service. The present 1260-1270 MHz allocation dates from WARC 1979.. Dave Sumner and (I believe) Paul Rinaldo were there and may have some background info. Here are the frequencies allocated to the amateur-satellite service at WARC-ST 71: 7.0-7.1, 14.0-14.25, 28.0-29.7, 144-146, 435-438, and 24000-24050 MHz 73 Ray

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Phonesat Video
by Trevor . 20 Nov '12

20 Nov '12

Phonesat, 437.425 MHz, are currently slated to launch in December. See http://www.uk.amsat.org/?p=11544 Also recently added to the AMSAT-UK website is a GB1MIR page at http://www.uk.amsat.org/?page_id=11501 73 Trevor M5AKA AMSAT-UK http://www.amsat-uk.org/ ----

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Re: MAREA a School Activity You Can Do
by Joe Fitzgerald 19 Nov '12

19 Nov '12

Mark, Curiously ESA and NASA are doing similar work, although not with students: http://www2.electronicproducts.com/Control_a_LEGO_robot_from_space-article-… Joe KM1P

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2nd IAA Conference on University Satellites Missions
by IAA Conference University Satellite 19 Nov '12

19 Nov '12

Dear Colleague: We are pleased to announce the *Call for Papers for the * *2nd IAA Conference on University Satellites Missions* *and Cubesat Winter Workshop* to be held in Roma (Italy), from 3rd-9th February 2013 , under the main sponsorship of IAA, GAUSS Srl, ESA, ASI, Italian Air Force, Sapienza University of Roma, Morehead State University (Kentucky), Von Karman Institute, FILAS, BCC Roma. The Conference has the goal to provide the international space community with a forum for presentations and discussions in the area of University Satellites. Particular emphasis will be given to the theme:** *Innovative aspects related to science and engineering* * for university satellites* During the conference three days will be completely dedicated to the Cubesat community. Inside the Conference three days are completely dedicated to Cubesat community. Some of the proposed topics are: *Space Environment, Remote sensing and Earth observation, Innovative solutions for university satellite subsystems, Launch opportunities, Space Debris, Ground Segment and Stations Network, New Perspectives for Cubesats, Cubesats Future Payloads and Experiments, Satellite Orbit and Attitude Determination and Control, Micro-propulsion Subsystems, University Platform for biomedical research in Space, Formation Flying, Cubesat In- Orbit Experience, Cubesats Scientific Missions and “applications” activities.* The preliminary program, logistics, and registration information, exhibition stands informations may be found on the symposium website at www.gaussteam.com in the events section. Open space is also available upon request for building exhibition stands: if interested please send an email to conference(a)gaussteam.com with subject "*Exhibition*". We hope to see you there. Sincerely, Filippo Graziani, G.A.U.S.S. President and IAA member, Conference Chair *Important Dates* Abstract Submission Deadline*: December 17*th* 2012* Acceptance Notification*: December 22*nd* 2012* Paper Submission Deadline*: January 25*th* 2013* Selected Papers will be published on the “Proceedings of the 2nd IAA Conference on University Satellites Missions and CubeSat Winter Workshop” by International Academy of Astronautics and G.A.U.S.S. Srl

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ANS-323 AMSAT News Service Weekly Bulletins
by E.Mike McCardel 18 Nov '12

18 Nov '12

AMSAT NEWS SERVICE ANS-323 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 Please, share your copy of ANS with an Educator near you! In this edition: * FITSAT-1 plans to flash the LEDs on Christmas Eve. * Space Education A Key To The Future * Reminder - Call for Photos From Space Symposium and KSC Tour * November 20 Deadline for Proposals in NASA's Cubesat Initiative * Indonesia Announces Plans for 2013 Launch * 2012 AMSAT Symposium Proceedings Available in the AMSAT Store * SSTV Images from the ISS Nov 2012 * Successful ARISS Contacts * US Postal Department Proposes to Discontinue IRCs * Satellite Shorts From All Over SB SAT @ AMSAT $ANS-323.01 ANS-323 AMSAT News Service Weekly Bulletins AMSAT News Service Bulletin 323.01 >From AMSAT HQ SILVER SPRING, MD. DATE, 2012 To All RADIO AMATEURS BID: $ANS-323.01 FITSAT-1 (NIWAKI) plans to flash the LEDs on Christmas Eve. During a recent exchange discussing FITSAT-1 on the AMSAT-BB, Kevin Deane, KF7MYK asked, "When is the LED MORSE supposed to happen?," FITSAT-1 creator Professor Takushi Tanaka, JA6AVG, promptly replied "We plan to flash the LEDs on Christmas Eve. So we will start testing around the end of this month." The LED optical array may be visible to the unaided eye. There has been much discussion about FITSAT-1 being received in the USA on 5.8GHz. However another part of FITSAT-1's mission is to flash the message "Hi this Niwaka Japan" using its array of stacked LEDs. Whereas, the Morse broadcast has "no practical aim," Tanaka, and his team of Japanese students, think it would make a good emergency beacon for natural disasters (or, more worryingly, alien invasions). The FITSAT-1 CubeSat was developed by students at the Fukuoka Insti- tute of Technology (FIT) in Japan. In addition to the LED array it also has a CW beacon on 437.250 MHz, a data link on 437.445 MHz and a 5840.0 MHz data downlink. Further FITSAT-1 information is on-line at: http://www.fit.ac.jp/~tanaka/fitsat.shtml [ANS thanks Kevin, Deane, Takushi Tanaka, Jaonne Maenpaa and AMSAT- BB for the above information] --------------------------------------------------------------------- Space Education A Key To The Future Educators, who effectively use space themes to inspire students and strengthen lesson plans, have a great opportunity for additional support from the nation's premier space advocacy organization. The Space Foundation is now accepting applications for its 2013 flight of Teacher Liaisons. This will be the 10th year of this prestigious, nationally recognized program that provides an honored few educators numerous benefits and privileges, helps strengthen their teaching skills, builds re'sume's and influences education at a national level. Pre K-20 teachers and other professional or informal educators in the Pre K-20 arena are eligible to be Space Foundation Teacher Liaisons. Teacher Liaisons tend to be Master Teachers who want to inspire the next generation of students to pursue and excel in the areas of science, technology, engineering and math (STEM). Teacher Liaisons do not need to be science or math teachers; they need only to have a desire to integrate space education within their curriculum. Space Foundation Teacher Liaisons serve as active links between the Space Foundation, NASA and their schools and school districts. This influential role includes numerous benefits, privileges and activities such as special recognition during the 29th National Space Symposium, to be held at The Broadmoor Hotel in Colorado Springs, Colorado, April 8-11, 2013. There is no fee to apply, or membership cost. http://www.spacefoundation.org/educationtemp/tls/user/ http://www.satmagazine.com/2012/SM_Nov2012.pdf [ANS thanks November 2012 SatMagazine for the above information] --------------------------------------------------------------------- Reminder - Call for Photos From Space Symposium and KSC Tour The AMSAT Journal looks forward to publishing selected photos of our 2012 Space Symposium, General Meeting, and the Kennedy Space Center tour. Work is under way for photo and story coverage of these events in the Journal being planned for the January timeframe. A few have already sent your photos or links to your on-line album I have them ... thanks! There will be space for many more photos so please send them in (if you have not done so). Select 5-6 of your favorite photos and add a couple of your personal comments about what you found interesting or cool. The comments can just be text in the e-mail message ... no formatting is required. Alternatively, if you use any of the on-line photo album sites you could just send me the URL for that. I can go there to select photos but I would appreciate a comment from you about which ones you may recommend. Send your input to the Journal In-Box - journal(a)amsat.org - by December 1. If your message is not getting through due large sized attachments several smaller e-mail messages are acceptable. You may also contact me off-list and I'll supply another e-mail address to try. [ANS thanks AMSAT Journal Editor JoAnne, K9JKM for the above information] --------------------------------------------------------------------- November 20 Deadline for Proposals in NASA's Cubesat Initiative NASA is seeking proposals for small satellite payloads to fly on rockets planned to launch between 2013 and 2016. These miniature spacecraft, known as CubeSats, could be auxiliary payloads on pre- viously planned missions. CubeSats are a class of research spacecraft called nanosatellites. These cube-shaped satellites are approximately four inches long, have a volume of about one quart and weigh less than three pounds. Proposed CubeSat investigations must be consistent with NASA's Stra- tegic Plan and the NASA education vision and goals. The research must address aspects of science, exploration, technology develop- ment, education or operations. Applicants must submit proposals electronically by 4:30 p.m. EST, Nov. 20, 2012. NASA will select the payloads by Jan. 31, 2013. Sel- ection does not guarantee a launch opportunity. The selected space craft will be eligible for flight after final negotiations when a launch opportunity arises. NASA will not provide funding for the development of the small satellites. NASA recently announced the results from the third round of the CubeSat Launch Initiative. From the first three launch initiatives, 64 payloads made the short list for launch opportunities between 2011 and 2014. They are eligible for launch pending an appropriate opportunity and final negotiations. The satellites come from 25 states: Alabama, Alaska, California, Colorado, Florida, Hawaii, Illinois, Indiana, Kentucky, Louisiana, Maryland, Massachusetts, Michigan, Missouri, Montana, North Dakota, New Hampshire, New Mex- ico, New York, Ohio, Pennsylvania, Texas, Utah, Vermont and Virginia. For additional information about NASA's CubeSat Launch Initiative program, visit: http://go.nasa.gov/puk9K2 and http://go.nasa.gov/CubeSatOp. [ANS thanks the NASA Education Express Message for Nov. 8, 2012 for the above information] --------------------------------------------------------------------- Indonesia Announces Plans for 2013 Launch The Indonesian National Society, ORARI, submitted a report during the IARU Region 3 conference in Viet Nam mentioned the amateur radio satellites they hope will be launched in 2013: http://www.iaru-r3.org/15r3c/docs/025.doc ORARI is supporting LAPAN, the Indonesian Space Agency, to launch satellites as follows: + Satellite LAPAN - A2 (will be launched Mid 2013) Telemetry 437.425 MHz + Satellite LAPAN - ORARI (will be launched Mid 2013) Downlink Voice 435.880 MHz Uplink Voice 145.880 MHz APRS 145.825 MHz Telemetry 437.325 MHz These satellites are planned for low inclination orbits which may limit access from high latitude countries. [ANS thanks Trevor, M5AKA for the above information] --------------------------------------------------------------------- 2012 AMSAT Symposium Proceedings Available in the AMSAT Store The Proceedings of the AMSAT-NA 30th Symposium and AMSAT-NA Annual Meeting, October 26-28 in Orlando, Florida have been put in the on- line AMSAT Store. Please visit the store at: http://store.amsat.org/catalog/ The proceedings contains over 30 articles on subjects ranging from current satellite operations to updates on the Fox Project. If you could not make the meeting, this is a great source of the latest information. Price is $25 + $12 Shipping for USA. See the details on the store web page and order your copy today! [ANS thanks Martha at the AMSAT Office for the above information] --------------------------------------------------------------------- SSTV Images from the ISS Nov 2012 My fascination with ham radio and the International Space Station stepped up a notch today, as I was able to receive and decode my first image from the ISS. Occasionally, the astronauts aboard the ISS turn on the SSTV (Slow Scan TV) equipment on their amateur radio station and beam signals from their vantage point back down to us amateurs on the ground. After being tipped off via the ISS Fan Club website that SSTV was active, I calculated a suitable overhead path and connected the audio output of my 2 metre rig to the soundcard on my PC, and tuned in. The frequency in use for the downlink was 145.800MHz, and I set up a digital recorder to capture the received audio. Without too much fiddling about, the image was received pretty well, with only a tiny bit of noise, and a fairly minor image attribute on the left. [ANS thanks Essex Ham (and Trevor, M5AKA) for the above information] --------------------------------------------------------------------- ARISS UPDATES Successful ARISS Contact for 1 Circolo Didattico G.Marconi, Casamassima, Italy Friday November 9, 2012 at 12:53 UTC, which is 13:53 CEST, students from 1 Circolo Didattico G.Marconi, Casamassima, Italy established ARISS contact with JAXA astronaut Akihiko Hoshide KE5DNI onboard the International Space Station. Astronaut Akihiko Hoshide KE5DNI operated with the ISS callsign OR4ISS. This was a direct contact performed by amateur radio club station IZ7RTN installed at "Cittadella Mediterranea della Scienza", University of Bari, Italy. The Didactic Center "Marconi" in Casamassima di Bari, South Italy includes one Primary School and two Nursery Schools. There are more than 800 students and a teaching staff of 70 teachers, directed by headmaster Mrs. Rita Rosaria Gagliardi. The Primary School has multimedia and scientific laboratories, while the students play an active role in a number of projects on Science, Music, Dance, Theatre, Physical Education and more. Mr. Michele Mallardi IZ7EVR, radio contact coordinator for this event, decided in favor of the setup for a direct contact, with assistance from the ARISS telebridge station IK1SLD installed at Casale Monferrato Airport, Piemonte, Italy. The contact took place at "Cittadella Mediterranea della Scienza", University of Bari, where an audience of about 250 students, visitors and Media, including 12 Italian Air Force officers, participated to the ARISS contact. Before the link voice with ISS, Mr. Michele Mallardi IZ7EVR presented ARISS program, the operations during an contact with the ISS via Ham Radio, and the life of the astronauts in space. At 12:53 UTC, contact with OR4ISS was established by station IZ7RTN. Using the Kenwood radio in the Service Module, Akihiko Hoshide KE5DNI answered all 20 questions from the students, exchanged final greetings and closed the contact. During the pass, the signal from the ISS was loud and clear. Live streaming video was available on: http://www.cittadellamediterraneascienza.it/webtv.html ARISS contact was announced by web story on ESA Portal - National News: http://www.esa.int/esaCP/SEML9F62Q8H_Italy_0.html Congratulations to the schools staff, ARISS Puglia Team! ----------- Successful ARISS contact for Italian Schools in Govone, Priocca and Diano d'Alba, Italy Thursday November 8, 2012 at 12.04 UTC, which is 13.04 CEST, students from Institute Comprehensive in Govone, Nino Costa Middle school in Priocca and Institute Comprehensive in Diano d'Alba, Italy established ARISS contact with JAXA astronaut Akihiko Hoshide KE5DNI onboard the International Space Station. Astronaut Akihiko Hoshide KE5DNI operated with the ISS callsign OR4ISS. This was a direct contact performed by amateur radio station IK1SLD, installed for the event in Planetarium in Turin, Italy. The two Junior High schools Nino Costa of Priocca and T.L. Dalmasso of Govone are integral part of the Comprehensive School of Govone in the province of Cuneo. The municipal territories of the Comprehensive School of Govone are situated on the left bank of the river Tanaro; this district, which is a hil country, is called "Roero" and it's famous for its fine wines. The inhabitants live mostly in the plein where the schools can also be found while on the top of the hill there is the old town center where is the towmhall. The students came from the small towns of Govone, Priocca, Magliano Alfieri, Castellinaldo, San Damiano. The school is attended by about 300 pupils, aged between 3 and 13 years. Mr. Claudio Ariotti IK1SLD, radio contact coordinator for this event, decided in favor of the setup for a direct contact, with assistance from the his ARISS telebridge station (IK1SLD) installed at Casale Monferrato Airport, Piemonte, Italy and operated by Max Canepa IW1CNF. The contact took place at Planetarium in Turin, where an audience of about 200 students, visitors and Media participated to the ARISS contact. Before the link voice with ISS, Mr. Claudio Ariotti IK1SLD presented ARISS program, the operations during an contact with the ISS via Ham Radio, and the life of the astronauts in space. At 12:04 UTC, contact with OR4ISS was established by station IK1SLD. Using the Kenwood radio in the Service Module, Akihiko Hoshide KE5DNI answered all 20 questions from the students, exchanged final greetings and closed the contact. During the pass, the signal from the ISS was loud and clear. Live streaming video was available on: http://www.livestream.com/AMSAT_Italia Video of the contact is available also here: http://www.livestream.com/AMSAT_Italia ARISS contact was announced by web story on ESA Portal - National News: http://www.esa.int/esaCP/SEML9F62Q8H_Italy_0.html Congratulations to the school's staff, ARISS Team IK1SLD and ARI Casale! 73 Francesco De Paolis, IK0WGF ARISS mentor [ANS thanks ARISS for the above information] ------------ Amateur Radio Newsline Covers ARISS The November 9 Amateur Radio Newsline report #1839 included an item about the upcoming ARISS contact with students in Gujarat, India on November 14.The article, Ham Radio in Space: First Time Ever India to ISS Student Contact may be viewed at: http://www.arnewsline.org/storage/scripts/nsln1839.txt ------------ Live Internet Coverage of ARISS Contacts John Spasojevich, AG9D, who does the live internet audio distribu- tion of the ARISS contacts, provided this summary of the audio sources where you may listen. + EchoLink *AMSAT* node (101377) + Echolink *JK1ZRW* node (277208) + IRLP Node 9010 Discovery Reflector Streaming Audio: https://sites.google.com/site/arissaudio/ Audio on Echolink & web stream is generally transmitted around 20 minutes prior to the contact taking place so that you can hear some of the preparation that occurs. IRLP will begin just prior to the ground station call to the ISS. Please note that on Echolink there are automatic breaks of 1.5 sec- onds in the audio transmission. These occur every 2.5 minutes during the event. Breaks on IRLP are manual and occur approximately after every third question. John invites anyone interested in more info on how to hear the live ARISS contact to send an email him at: johnag9d(a)gmail.com. [ANS thanks John Spasojevich, AG9D for the above information] --------------------------------------------------------------------- US Postal Department Proposes to Discontinue IRCs ATTENTION DX'ers who mail to foreign countries for QSL cards: If the US Postal Service (USPS) gets its way, it will no longer sell International Reply Coupons (IRCs) after January 27, 2013. According to the October 23 edition of the Federal Register, there is not sufficient demand for the USPS to continue offering IRCs to customers; however, per the Universal Postal Union (UPU) regulations, the USPS must continue to exchange (redeem) IRCs that have been purchased in foreign countries and presented at USPS facilities. The current Nairobi model is valid through December 31, 2013. Comments on this proposed change will be accepted http://www.regulations.gov/#!submitComment;D=USPS-2012-0101-0001 through November 23, 2012. IRCs provide foreign addressees with a prepaid means of responding to inquiries, solicitations or other types of communications -- such as QSL cards -- that are initiated by US senders. IRCs are exchangeable for postage stamps by postal administrations in member countries of the UPU. Each IRC is equivalent in value to the destination country's minimum postage price for an unregistered airmail letter. The purchase price is in the US is currently $2.20 per IRC. -- Thanks to The Daily DX for some information. You have until November 23rd to submit your comments on this proposal. http://www.regulations.gov/#!submitComment;D=USPS-2012-0101-0001 [ANS thanks the American Radio Relay League for the above information] --------------------------------------------------------------------- Satellite Shorts From All Over + MP3 archives of the AMSAT-UK 80M net can be found at: http://www.dit-dit-dit.com/Downloads.aspx + Simon Brown, HB9DRV posted a demo of his SDR-Radio, V2 software at: http://www.youtube.com/watch?v=jj5boD62bSY&feature=plcp + An SSTV image received November 9 from the ISS on 145.800 along with a short video can be seen at: http://www.essexham.co.uk/news/images-from-the-iss-nov-2012.html (Trevor M5AKA) + The bright morning star is Venus. The bright evening star is Jupiter. + IARU Region 3 conference paper from their recent meeting in Viet Nam are available on-line: o KiwiSAT - A Project of AMSAT-ZL at: http://www.iaru-r3.org/15r3c/docs/035.doc o Other IARU Region 3 conferences papers can be read at: http://www.iaru-r3.org/15r3c/docs/docs.htm o A picture of the delegates is at: http://www.dermandar.com/p/bByKak + iPhone interface for Ham Radios Thomas N2YTF, vice president of the Hall of Science Amateur Radio Club, demonstrated his iPhone interface at the recent Maker Faire at the New York Hall of Science in Queens. Read the article "Tinkerer Invents iPhone Interface for Ham Radios" http://tinyurl.com/cujjneo + A Private Affair For Russia The first Russian satellite, manufactured by a private company for private funds will be put into orbit in 2014, most probably onboard the "Progress" state-owned cargo vehicle-so believes "Sputniks" General Director Andrei Potapov. http://www.satmagazine.com/2012/SM_Nov2012.pdf - Page 19 + The Photo Reconnaissance Satellites of the USS/Russia Similar to the United States, the former Union of Socialist Soviet Republics recognized the value of military reconnaissance satellites early in their development of spaceflight. http://www.milsatmagazine.com/2012/MSM_Oct2012.pdf - Page 48 + Fun with model rockets and an iPhone Make: Projects community member Mike Westerfield shared a pair of intriguing how-tos detailing how to fly a TI SensorTag and an iPhone on a model rocket to find acceleration, rotation, and pressure, then collect and analyze the data using a Bluetooth link to the iPhone and techBASIC. http://tinyurl.com/bgf3xam + Saturn V Moon Rocket Inforgraphic http://tinyurl.com/ctybpo7 [ANS thanks everyone 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 addi- tional benefits. Application forms are available from the AMSAT Office. Primary and secondary school students are eligible for membership at one-half the standard yearly rate. Post-secondary school students enrolled in at least half time status shall be eligible for the stu- dent rate for a maximum of 6 post-secondary years in this status. Contact Martha at the AMSAT Office for additional student membership information. 73, This week's ANS Editor, EMike McCardel, KC8YLD kc8yld at amsat dot org

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Poloarization Loss
by Al Ozias 17 Nov '12

17 Nov '12

For "line of sight" communications where can I look up the signal loss due to polarization difference for a given receiving antenna polarization facing a transmitting antenna with a known different polarization? Al-N7EQF

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