[amsat-bb] Re: Charge for Satellite Tracking?
Good to see the AMSAT educational papers being mentioned again. I'm using James' 'Sun's Up' paper to model illumination for my FUNcube Orbital model. http://www.amsat.org/amsat/articles/g3ruh/112.html Regards Dave http://www.g4dpz.me.uk On 1 Nov 2011, at 00:11, Peter Guelzow peter.guel...@kourou.de wrote: On 31.10.2011 21:17, jmfranke wrote: To paraphrase Yoda in Star Wars: Whine not. Do. Or do not. There is no whine. John WA4WDL or just do it yourself http://www.amsat.org/amsat/articles/g3ruh/123.html Sorry - I could not resist..old AMSAT technology, almost forgotten by most people... 73s Peter DB2OS ___ 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] Re: Charge for Satellite Tracking?
Hi Peter, Many thanks for the link. On our FUNcube cubesat mission we are promoting, as one of the many educational outreach subjects, the opportunity for a group to design and build such a ranging system using the U/V linear transponder that we will be flying on board. The same functionality will also be available on UKube. Maybe others can use this idea to help justify the presence of amateur transponders on satellites to provide independent position information. We might, however, have to ask Jim to take down his paper from the web so as not to make it too easy:) best 73 Graham G3VZV or just do it yourself http://www.amsat.org/amsat/articles/g3ruh/123.html Sorry - I could not resist..old AMSAT technology, almost forgotten by most people... 73s Peter DB2OS ___ 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] Re: Charge for Satellite Tracking?
- Original Message - From: Armando Mercado am25...@triton.net To: amsat-bb@amsat.org Sent: Monday, October 31, 2011 9:44 AM Subject: [amsat-bb] Re: Charge for Satellite Tracking? Greetings, Well, how would we feel if USSTRATCOM started charging for the use of their data that we use to track our satellites? 73, Armando N8IGJ Hi Armando, N8IGJ If our satellite has an onboard transponder it is possible to create the keplerian elements at a ground control station using the following method: http://www.amsat.org/amsat/articles/g3ruh/123.html And this is why a linear transponder is justified on board of our AMSAT satellites. If the satellites is equipped with an apprpriate GPS system like on AO40 it's onboard computer can calculate it's position on the space and a ground control station can derive it's keplerian elements in real time and distribute it to the users via TLM messages. ftp://rsd.gsfc.nasa.gov/pub/chesters/goesref/Moreau_GPS.pdf 73 de i8CVS Domenico ___ 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] Fw: NY SATELLITE SPECIAL EVENT STATION
Good Morning, I was asked by Hamilton, who attended one of my Satellite Presentations, to make satellite operators aware of this event, thank you. 73's Pete WB2OQQ www.massapequanyweather.com Hi, A satellite special event station N3Y will operate from the New Yorker Hotel in NY City on November 5th to raise awareness for the effort to restore Nikola Tesla's last lab in Shoreham, NY into a science museum; The New Yorker Hotel, was Tesla’s last home in Manhattan. Wardenclyffe, the lab, is located in Shoreham, NY on Long Island. We are helping to raise awareness for the effort to purchase the laboratory and restore it into a science museum. To read more about the effort to restore Wardencyffe, please check out http://www.teslasciencecenter.org. . For the latest updates on what frequencies to catch the stations on and a sneak peek at the QSL cards and QTHs, go to http://copaseticflows.appspot.com/teslaevent. Thanks for your help! -- 73 de KD0FNR Hamilton http://copaseticflows.appspot.com http://copaseticflow.blogspot.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
[amsat-bb] Re: Satellite Demonstration
Well done I wish you a great success, too bad I will at work at that time, I really wanted to participate. See you on the birds this weekend. 73, Raydel, CM2ESP EL83 -Original Message- From: Hector L Martinez, CO6CBF co6...@frcuba.co.cu To: amsat-bb@amsat.org Date: Tue, 1 Nov 2011 00:36:59 -0400 Subject: [amsat-bb] Satellite Demonstration Hello Guys Today, I will be giving a Satellite demonstration portable from the sea walk of my city (Cienfuegos in EL92). We will try to receive the ARISSat-1 FM signal and operate on the AO-27 pass around 1838utc. A lot of students, teachers and amateur radio enthusiast will attend the demo. If you work me please give a shout out to the people and your QTH (city, state). Thanks and 73! Hector, CO6CBF EL92 --- Este mensaje ha sido enviado mediante el servicio de correo electronico que ofrece la Federacion de Radioaficionados de Cuba a sus miembros para respaldar el cumplimiento de los objetivos de la organizacion y su politica informativa. La persona que envia este correo asume el compromiso de usar el servicio a tales fines y cumplir con las regulaciones establecidas. ___ 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 --- Este mensaje ha sido enviado mediante el servicio de correo electronico que ofrece la Federacion de Radioaficionados de Cuba a sus miembros para respaldar el cumplimiento de los objetivos de la organizacion y su politica informativa. La persona que envia este correo asume el compromiso de usar el servicio a tales fines y cumplir con las regulaciones establecidas. --- Este mensaje ha sido enviado mediante el servicio de correo electronico que ofrece la Federacion de Radioaficionados de Cuba a sus miembros para respaldar el cumplimiento de los objetivos de la organizacion y su politica informativa. La persona que envia este correo asume el compromiso de usar el servicio a tales fines y cumplir con las regulaciones establecidas. ___ 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] 5 in EM55
+Congrats to Bruce WA3SWJ for award #39 5 in em55 WA4HFN Damon ___ 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] Re: Charge for Satellite Tracking?
I think having stations set up to do that ranging would be neat to have if nothing else for an education opportunity. As a student working on building and launching one of these little nano-satellites I would like to see one thing cleared up. These are NOT University satellites, they are student satellites. They are designed and built by students, funded through grants and donations arranged by students. Universities provide little more then an framework for organizing these sorts of projects. So if the university is going to chip in to some fund on behalf of those helping track the satellites, then it would be really nice for them to through some money at the building of the satellites. At my school the department sponsoring our project has to pay the university rent for the space we take up in a building owned by the department for a project made up entirely of tuition paying students. We may only pay around $7-15K in tuition, and another $5-10K in housing, food, books, etc. but most of us if we are lucky can make about half our yearly costs from summer jobs or internships. The rest we scrounge for scholarships and grants. We put in around 20 hours a week into class and labs, another 15-40 in other school work. What little free time we have we spend in research labs instead of watching TV, or drinking. We spend a lot of that time trying to keep the project funded to a level that allows us to continue. We are very aware of how much it costs to construct a station to track satellites, and to build the satellites, and to launch the satellites. If we are able to bring in any extra money we spend that right back into the students we have putting 20 hours a week that they could and probably should spend on something outside of school. We devote years into these little boxes of electronics, in the hope that it will someday fly in space. We reach out and connect with other students doing the same thing, we congratulate them for their successes, and console them on their losses. I personally was up all night watching this latest launch as one of the cubes (E1P) was to have been launch on the Glory mission in march which failed to reach orbit. It is now on orbit and doing fine, M-Cubed however seams to be having issues and I will track it every chance I get to help that team understand what is going on. I got into nano-satellites by first being a HAM, and if I have my way anything I put into orbit will be switched over to a BBS, APRS digi, or even voice repeater when the scientific mission is done. That time may not come in the operational life span of the satellite and it is very important that it complete the mission that someone has generously paid for. If nothing else then I hope what I learn from this endeavor will serve to further the collective understanding of something. I attend a state school as a student of Mechanical Engineering, I have been dumpster diving for parts, I carry two rolls of duct tape, I find a hammer can fix many problems, I have spent hours building things to replace tools I either cannot afford, or cannot afford to wait for. The moral is that these aren't multi-million dollar projects with blank checks, these are shoestring operations that have to take things one step at a time. If you don't want to help out the next generation of aerospace engineers and rocket scientists that's up to you. We won't turn down help, but many of us have grown to expect nothing from anyone. We will build a ladder so we can through our satellite into orbit if we have to. I'm sorry if I seam over passionate or long winded, but please keep in mind that I have watched for several years as budgets have been cut, my tuition and living expenses goes up, and my income and financial-aid remain the same. It is like a broken record (yes I know what records are) to hear people complain about a short term inconvenience and offer a solution that threatens long term progress. Anthony Odenthal KE7OSN President Amateur Radio Club at OSU On Mon, Oct 31, 2011 at 21:45, Dave Guimont dguim...@san.rr.com wrote: Very good, Peter, I was hoping we could get Jim to chime in!! 73 Dave On 31.10.2011 21:17, jmfranke wrote: To paraphrase Yoda in Star Wars: Whine not. Do. Or do not. There is no whine. John WA4WDL or just do it yourself http://www.amsat.org/amsat/**articles/g3ruh/123.htmlhttp://www.amsat.org/amsat/articles/g3ruh/123.html Sorry - I could not resist.. old AMSAT technology, almost forgotten by most people... 73s Peter DB2OS __**_ 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-bbhttp://amsat.org/mailman/listinfo/amsat-bb 73, Dave, WB6LLO dguim...@san.rr.com Disagree: I learn
[amsat-bb] OFDM Transceivers
Just over a decade ago Peleg 4X1GP gave a good presentation to the annual AMSAT-UK Colloquium in Guildford that pointed out that OFDM was the way ahead for Amateur communications. Well 10 years later the first OFDM Amateur transceivers have been announced. Doodle Labs have announced a range of 64 QAM OFDM Transceivers for the Amateur bands above 420 MHz. The 420 MHz transceivers feature speeds of up to 12 Mbps and bandwidths of 10 MHz or 5 MHz, while data throughput of 48 Mbps is claimed on the 1240 MHz verssion. Details of the 420 MHz version are at http://www.doodlelabs.com/products-and-services/amateur-bands/420-450-mhz-band-dl435.html The others in the range can be seen at http://doodlelabs.com/products-and-services.html#Amateur 73 Trevor M5AKA Daily Amateur Radio Email/RSS News: http://www.southgatearc.org/ Email Your News To: editor at southgatearc.org Or Upload At: http://www.southgatearc.org/news/your_news_1.htm ___ 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] Re: Charge for Satellite Tracking?
Thanks Anthony, Point well made. Keep up the good work and know that many in AMSAT are behind you and will support you. Stefan, VE4NSA On Tue, Nov 1, 2011 at 3:26 AM, KE7OSN ke7...@arrl.net wrote: I think having stations set up to do that ranging would be neat to have if nothing else for an education opportunity. As a student working on building and launching one of these little nano-satellites I would like to see one thing cleared up. These are NOT University satellites, they are student satellites. They are designed and built by students, funded through grants and donations arranged by students. Universities provide little more then an framework for organizing these sorts of projects. So if the university is going to chip in to some fund on behalf of those helping track the satellites, then it would be really nice for them to through some money at the building of the satellites. At my school the department sponsoring our project has to pay the university rent for the space we take up in a building owned by the department for a project made up entirely of tuition paying students. We may only pay around $7-15K in tuition, and another $5-10K in housing, food, books, etc. but most of us if we are lucky can make about half our yearly costs from summer jobs or internships. The rest we scrounge for scholarships and grants. We put in around 20 hours a week into class and labs, another 15-40 in other school work. What little free time we have we spend in research labs instead of watching TV, or drinking. We spend a lot of that time trying to keep the project funded to a level that allows us to continue. We are very aware of how much it costs to construct a station to track satellites, and to build the satellites, and to launch the satellites. If we are able to bring in any extra money we spend that right back into the students we have putting 20 hours a week that they could and probably should spend on something outside of school. We devote years into these little boxes of electronics, in the hope that it will someday fly in space. We reach out and connect with other students doing the same thing, we congratulate them for their successes, and console them on their losses. I personally was up all night watching this latest launch as one of the cubes (E1P) was to have been launch on the Glory mission in march which failed to reach orbit. It is now on orbit and doing fine, M-Cubed however seams to be having issues and I will track it every chance I get to help that team understand what is going on. I got into nano-satellites by first being a HAM, and if I have my way anything I put into orbit will be switched over to a BBS, APRS digi, or even voice repeater when the scientific mission is done. That time may not come in the operational life span of the satellite and it is very important that it complete the mission that someone has generously paid for. If nothing else then I hope what I learn from this endeavor will serve to further the collective understanding of something. I attend a state school as a student of Mechanical Engineering, I have been dumpster diving for parts, I carry two rolls of duct tape, I find a hammer can fix many problems, I have spent hours building things to replace tools I either cannot afford, or cannot afford to wait for. The moral is that these aren't multi-million dollar projects with blank checks, these are shoestring operations that have to take things one step at a time. If you don't want to help out the next generation of aerospace engineers and rocket scientists that's up to you. We won't turn down help, but many of us have grown to expect nothing from anyone. We will build a ladder so we can through our satellite into orbit if we have to. I'm sorry if I seam over passionate or long winded, but please keep in mind that I have watched for several years as budgets have been cut, my tuition and living expenses goes up, and my income and financial-aid remain the same. It is like a broken record (yes I know what records are) to hear people complain about a short term inconvenience and offer a solution that threatens long term progress. Anthony Odenthal KE7OSN President Amateur Radio Club at OSU On Mon, Oct 31, 2011 at 21:45, Dave Guimont dguim...@san.rr.com wrote: Very good, Peter, I was hoping we could get Jim to chime in!! 73 Dave On 31.10.2011 21:17, jmfranke wrote: To paraphrase Yoda in Star Wars: Whine not. Do. Or do not. There is no whine. John WA4WDL or just do it yourself http://www.amsat.org/amsat/**articles/g3ruh/123.htmlhttp://www.amsat.org/amsat/articles/g3ruh/123.html Sorry - I could not resist.. old AMSAT technology, almost forgotten by most people... 73s Peter DB2OS __**_ Sent via AMSAT-BB@amsat.org. Opinions expressed are those of the author. Not an AMSAT-NA member? Join now to support the
[amsat-bb] Re: Charge for Satellite Tracking?
Thanks Anthony for some perspective that some of us really need. If anything there needs to be tighter cooperation between the general AMSAT community and the universities, and less of this adversarial nastiness and gimme mentality. The Fox program is trying to address some of these issues by providing the spacecraft bus and repeater (or transponder in Fox-2), and room for an experiment from a partner university. We hope the experiment and university partnership gets us a low-cost launch, and the university gets a ground network and reliable comms system. AMSAT gets an on-orbit asset after, and probably during, the experiment part of the mission. Win-win. 73, Drew KO4MA -Original Message- From: KE7OSN ke7...@arrl.net Sent: Nov 1, 2011 4:26 AM To: amsat-bb@amsat.org Subject: [amsat-bb] Re: Charge for Satellite Tracking? I think having stations set up to do that ranging would be neat to have if nothing else for an education opportunity. As a student working on building and launching one of these little nano-satellites I would like to see one thing cleared up. These are NOT University satellites, they are student satellites. They are designed and built by students, funded through grants and donations arranged by students. Universities provide little more then an framework for organizing these sorts of projects. So if the university is going to chip in to some fund on behalf of those helping track the satellites, then it would be really nice for them to through some money at the building of the satellites. At my school the department sponsoring our project has to pay the university rent for the space we take up in a building owned by the department for a project made up entirely of tuition paying students. We may only pay around $7-15K in tuition, and another $5-10K in housing, food, books, etc. but most of us if we are lucky can make about half our yearly costs from summer jobs or internships. The rest we scrounge for scholarships and grants. We put in around 20 hours a week into class and labs, another 15-40 in other school work. What little free time we have we spend in research labs instead of watching TV, or drinking. We spend a lot of that time trying to keep the project funded to a level that allows us to continue. We are very aware of how much it costs to construct a station to track satellites, and to build the satellites, and to launch the satellites. If we are able to bring in any extra money we spend that right back into the students we have putting 20 hours a week that they could and probably should spend on something outside of school. We devote years into these little boxes of electronics, in the hope that it will someday fly in space. We reach out and connect with other students doing the same thing, we congratulate them for their successes, and console them on their losses. I personally was up all night watching this latest launch as one of the cubes (E1P) was to have been launch on the Glory mission in march which failed to reach orbit. It is now on orbit and doing fine, M-Cubed however seams to be having issues and I will track it every chance I get to help that team understand what is going on. I got into nano-satellites by first being a HAM, and if I have my way anything I put into orbit will be switched over to a BBS, APRS digi, or even voice repeater when the scientific mission is done. That time may not come in the operational life span of the satellite and it is very important that it complete the mission that someone has generously paid for. If nothing else then I hope what I learn from this endeavor will serve to further the collective understanding of something. I attend a state school as a student of Mechanical Engineering, I have been dumpster diving for parts, I carry two rolls of duct tape, I find a hammer can fix many problems, I have spent hours building things to replace tools I either cannot afford, or cannot afford to wait for. The moral is that these aren't multi-million dollar projects with blank checks, these are shoestring operations that have to take things one step at a time. If you don't want to help out the next generation of aerospace engineers and rocket scientists that's up to you. We won't turn down help, but many of us have grown to expect nothing from anyone. We will build a ladder so we can through our satellite into orbit if we have to. I'm sorry if I seam over passionate or long winded, but please keep in mind that I have watched for several years as budgets have been cut, my tuition and living expenses goes up, and my income and financial-aid remain the same. It is like a broken record (yes I know what records are) to hear people complain about a short term inconvenience and offer a solution that threatens long term progress. Anthony Odenthal KE7OSN President Amateur Radio Club at OSU ___ Sent via AMSAT-BB@amsat.org. Opinions expressed are those of the author. Not an AMSAT-NA
[amsat-bb] Re: OFDM Transceivers
This is a truly awesome development... Gregg On 11/1/2011 9:57 AM, Trevor . wrote: Just over a decade ago Peleg 4X1GP gave a good presentation to the annual AMSAT-UK Colloquium in Guildford that pointed out that OFDM was the way ahead for Amateur communications. Well 10 years later the first OFDM Amateur transceivers have been announced. Doodle Labs have announced a range of 64 QAM OFDM Transceivers for the Amateur bands above 420 MHz. The 420 MHz transceivers feature speeds of up to 12 Mbps and bandwidths of 10 MHz or 5 MHz, while data throughput of 48 Mbps is claimed on the 1240 MHz verssion. Details of the 420 MHz version are at http://www.doodlelabs.com/products-and-services/amateur-bands/420-450-mhz-band-dl435.html The others in the range can be seen at http://doodlelabs.com/products-and-services.html#Amateur 73 Trevor M5AKA Daily Amateur Radio Email/RSS News: http://www.southgatearc.org/ Email Your News To: editor at southgatearc.org Or Upload At: http://www.southgatearc.org/news/your_news_1.htm ___ 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] Re: Charge for Satellite Tracking?
Hi, Great! I look forward to seeing the results. Will the keps be posted here or will they be available on a subscription basis only? :-) 73, Armando N8IGJ If our satellite has an onboard transponder it is possible to create the keplerian elements at a ground control station using the following method: http://www.amsat.org/amsat/articles/g3ruh/123.html ___ 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] Rv: DK78 2011-11-04
Hello Celebrating my birthday I want to activate DK78 for all my Sat friends. Hope be in AO-51 at 22:46 UTC. Maybe I will be in AO-51 at 21:10 UTC, is a low pass for me in my portable QRP station. I really try to celebrate my 42 years old from this grid at the pacific coast. Its my birthday but I will try it for all of you. Regards Omar XE1AO M.C. Omar Alvarez Cárdenas Facultad de Telematica, U de C 316 1075 xe1...@ucol.mx omar...@hotmail.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
[amsat-bb] DX world has a good page
http://dxworld.com/satlog.html wa4hfn ___ 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] Re: Charge for Satellite Tracking?
..but please keep in mind that I have watched for several years as budgets have been cut, my tuition and living expenses goes up, and my income and financial-aid remain the same. It is like a broken record (yes I know what records are) to hear people complain about a short term inconvenience and offer a solution that threatens long term progress. Anthony Odenthal KE7OSN President Amateur Radio Club at OSU -- Hi Anthony, Very well said. I find it astonishing the tone deafness of some of the postings that appear here from time to time. Thanks for your post. 73, Armando N8IGJ ___ 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] Re: Charge for Satellite Tracking?
Hi Graham, this is very good news indeed and I'm excited to hear that you will use it on FUNcube and UKcube.. the principals of ranging are easy to understand and I think it would be an ideal educational tool to learn about orbital mechanics, Kepler's law, etc., even how GPS works.. argh... we could create our own GNSS system .. haha :-) The AMSAT ranging system developed by Karl Meinzer DJ4ZC and later optimized by James Miller G3RUH was used on all Phase 3 satellites (OSCAR-10/13/40). You only needed an 400 Bit/s BPSK demodulator (used for telemetry already) and a BPSK modulator (as part of our command station). With the Phase 3 satellites it was also working through the regenerative ranging mode of the IHU, i.e. the Beacon TX data was directly feed by the Command RX. Like with the transponder, you have to measure or calculate the system phase delays to calibrate it and achieve higher accuracy. This includes calibrating your own system through a simple repeater... but even without calibration, it already works amazingly well.. Most people will laugh today, but the early AMSAT ranging software was running on the amazing ATARI 800 computer and Karl's IPS software. Beside the P3 satellites, we used this also LEO like AO-21 and on FUJI OSCAR-12 to provide early Elements for those satellites... it was fun! 73 Peter DB2OS On 01.11.2011 10:03, g.shirvi...@btinternet.com wrote: Hi Peter, Many thanks for the link. On our FUNcube cubesat mission we are promoting, as one of the many educational outreach subjects, the opportunity for a group to design and build such a ranging system using the U/V linear transponder that we will be flying on board. The same functionality will also be available on UKube. Maybe others can use this idea to help justify the presence of amateur transponders on satellites to provide independent position information. We might, however, have to ask Jim to take down his paper from the web so as not to make it too easy:) best 73 Graham G3VZV or just do it yourself http://www.amsat.org/amsat/articles/g3ruh/123.html Sorry - I could not resist..old AMSAT technology, almost forgotten by most people... 73s Peter DB2OS ___ 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] Re: Charge for Satellite Tracking?
Hi Armando, N8IGJ If unlikely AMSAT will be oblijed to derive by itself keps for the OSCAR satellites carrying a transponder using the following method: http://www.amsat.org/amsat/articles/g3ruh/123.html or the GPS method: ftp://rsd.gsfc.nasa.gov/pub/chesters/goesref/Moreau_GPS.pdf the keps will be posted here for free in the hope to get more satellite users and AMSAT members. 73 de i8CVS Domenico - Original Message - From: Armando Mercado am25...@triton.net To: amsat-bb@amsat.org Sent: Tuesday, November 01, 2011 5:38 PM Subject: [amsat-bb] Re: Charge for Satellite Tracking? Hi, Great! I look forward to seeing the results. Will the keps be posted here or will they be available on a subscription basis only? :-) 73, Armando N8IGJ If our satellite has an onboard transponder it is possible to create the keplerian elements at a ground control station using the following method: http://www.amsat.org/amsat/articles/g3ruh/123.html ___ 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] Charge for Satellite Tracking?
Anthony, Thank you for giving us a better perspective on what it is like to be involved in these sorts of projects. I, for one, really appreciate all you guys do and I am having a blast trying to track and decode the telemetry. I have not been very successful but one is never too old to learn, and I am learning a lot. Keep up the good work and I wish you all the success in the world at whatever path your professional career takes you. To the rest of you, especially all the whiners: I have included Anthony's posting just in case any of your missed it. Read it over and over and over until you understand what this is really all about. Have fun! 73, -- *Carl W8KRF snip *Message: 20 Date: Tue, 1 Nov 2011 01:26:40 -0700 From: KE7OSNke7...@arrl.net To:amsat-bb@amsat.org Subject: [amsat-bb] Re: Charge for Satellite Tracking? Message-ID: cacpgsd-wqqrhdxgbu9ass9o4jnqxvytrx+eu2orrfciwpva...@mail.gmail.com Content-Type: text/plain; charset=ISO-8859-1 I think having stations set up to do that ranging would be neat to have if nothing else for an education opportunity. As a student working on building and launching one of these little nano-satellites I would like to see one thing cleared up. These are NOT University satellites, they are student satellites. They are designed and built by students, funded through grants and donations arranged by students. Universities provide little more then an framework for organizing these sorts of projects. So if the university is going to chip in to some fund on behalf of those helping track the satellites, then it would be really nice for them to through some money at the building of the satellites. At my school the department sponsoring our project has to pay the university rent for the space we take up in a building owned by the department for a project made up entirely of tuition paying students. We may only pay around $7-15K in tuition, and another $5-10K in housing, food, books, etc. but most of us if we are lucky can make about half our yearly costs from summer jobs or internships. The rest we scrounge for scholarships and grants. We put in around 20 hours a week into class and labs, another 15-40 in other school work. What little free time we have we spend in research labs instead of watching TV, or drinking. We spend a lot of that time trying to keep the project funded to a level that allows us to continue. We are very aware of how much it costs to construct a station to track satellites, and to build the satellites, and to launch the satellites. If we are able to bring in any extra money we spend that right back into the students we have putting 20 hours a week that they could and probably should spend on something outside of school. We devote years into these little boxes of electronics, in the hope that it will someday fly in space. We reach out and connect with other students doing the same thing, we congratulate them for their successes, and console them on their losses. I personally was up all night watching this latest launch as one of the cubes (E1P) was to have been launch on the Glory mission in march which failed to reach orbit. It is now on orbit and doing fine, M-Cubed however seams to be having issues and I will track it every chance I get to help that team understand what is going on. I got into nano-satellites by first being a HAM, and if I have my way anything I put into orbit will be switched over to a BBS, APRS digi, or even voice repeater when the scientific mission is done. That time may not come in the operational life span of the satellite and it is very important that it complete the mission that someone has generously paid for. If nothing else then I hope what I learn from this endeavor will serve to further the collective understanding of something. I attend a state school as a student of Mechanical Engineering, I have been dumpster diving for parts, I carry two rolls of duct tape, I find a hammer can fix many problems, I have spent hours building things to replace tools I either cannot afford, or cannot afford to wait for. The moral is that these aren't multi-million dollar projects with blank checks, these are shoestring operations that have to take things one step at a time. If you don't want to help out the next generation of aerospace engineers and rocket scientists that's up to you. We won't turn down help, but many of us have grown to expect nothing from anyone. We will build a ladder so we can through our satellite into orbit if we have to. I'm sorry if I seam over passionate or long winded, but please keep in mind that I have watched for several years as budgets have been cut, my tuition and living expenses goes up, and my income and financial-aid remain the same. It is like a broken record (yes I know what records are) to hear people complain about a short term inconvenience and offer a solution that threatens long term progress. Anthony Odenthal KE7OSN President Amateur Radio Club at OSU /snip
[amsat-bb] Re: OFDM Transceivers
At 01:57 AM 11/2/2011, Trevor . wrote: The 420 MHz transceivers feature speeds of up to 12 Mbps and bandwidths of 10 MHz or 5 MHz, while data throughput of 48 Mbps is claimed on the 1240 MHz verssion. Very interesting, wonder how much these will cost. I want some! :) 73 de VK3JED / VK3IRL http://vkradio.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
[amsat-bb] Office Closed
The AMSAT Office will be closed from Wednesday, November 2nd - Tuesday, November 8th. I will be attending the AMSAT Space Symposium and Annual Meeting in San Jose, CA. -- 73- Martha ___ 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] Here's something we could try.
If Amsat won, we could use the winnings to launch a HEO. KB7ADL --- RELEASE: 11-370 NASA AND SPACE FLORIDA SMALL SATELLITE RESEARCH CENTER PARTNER IN SPACE LAUNCH CHALLENGE WASHINGTON -- NASA has signed an agreement with the Space Florida Small Satellite Research Center of Cape Canaveral, Florida, to manage the Nano-Satellite Launch Challenge, one of the agency's new Centennial Challenges prize competitions. The Nano-Satellite Launch Challenge is to launch satellites with a mass of at least 2.2 pounds (1 kg) into Earth orbit, twice within the span of one week. The new challenge has a NASA-provided prize purse of $2 million. The objective of the competition is to encourage innovations in propulsion and other technologies, as well as operations and management relevant to safe, low-cost, small payload delivery system for frequent access to Earth orbit. Innovations stemming from this challenge will be beneficial to broader applications in future launch systems. They may enhance commercial capability for dedicated launches of small satellites at a cost comparable to secondary payload launches -- a potential new market with government, commercial, and academic customers. Monday's agreement between NASA and Space Florida for use of facilities at the Kennedy Space Center even better positions the organization for managing this new Nano-Satellite Launch Challenge, said Michael Gazarik, director for NASA's Space Technology Program at NASA Headquarters in Washington. Space Florida has extensive experience working with NASA, the FAA, the Air Force, commercial spaceflight companies and universities to advance their plans for spaceflight operations. We look forward to having the Space Florida Small Satellite Research Center overseeing the competition and bringing together innovative teams with creative problem-solving ideas. Space Florida submitted a proposal last spring in response to a NASA solicitation for this partnership opportunity. They will now begin detailed preparations for the challenge, publishing rules and then registering competitors. The first competition launch attempt is expected to take place in the summer of 2012. The Centennial Challenges seek unconventional solutions to problems of interest to NASA and the nation. Competitors have included private companies, student groups and independent inventors working outside the traditional aerospace industry. Unlike contracts or grants, prizes are awarded only after solutions are successfully demonstrated. NASA's Centennial Challenges program provides the prize purse for the technology and innovation competitions. The competitions are managed by non-profit organizations that cover the cost of operations through commercial or private sponsorships. In October, NASA awarded the largest prize in aviation history following Pipistrel-USA's win of the agency's CAFE Green Flight Challenge, sponsored by Google. NASA's $1.35 million first prize and a $120,000 second prize recognized competitors using electric airplanes to break all previous fuel efficiency records. The technology and innovation used in electric aircraft may end up in general aviation aircraft, spawning new jobs and new industries for the 21st century. There have been 22 Centennial Challenges competition events since 2005. NASA has awarded nearly $6 million to 15 different challenge-winning teams. Centennial Challenges is one of the ten Space Technology programs, managed by NASA's Office of the Chief Technologist. For more information about the program and descriptions of each of the challenge competitions, visit: http://www.nasa.gov/challenges For more information about Space Florida and updates on the Nano-Satellite Launch Challenge, visit: www.spaceflorida.gov/r-d ___ 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] Re: Here's something we could try.
I say we go for it! From: Vince Fiscus, KB7ADL vlfis...@mcn.net To: amsat-bb@amsat.org Sent: Tuesday, November 1, 2011 7:36 PM Subject: [amsat-bb] Here's something we could try. If Amsat won, we could use the winnings to launch a HEO. KB7ADL --- RELEASE: 11-370 NASA AND SPACE FLORIDA SMALL SATELLITE RESEARCH CENTER PARTNER IN SPACE LAUNCH CHALLENGE WASHINGTON -- NASA has signed an agreement with the Space Florida Small Satellite Research Center of Cape Canaveral, Florida, to manage the Nano-Satellite Launch Challenge, one of the agency's new Centennial Challenges prize competitions. The Nano-Satellite Launch Challenge is to launch satellites with a mass of at least 2.2 pounds (1 kg) into Earth orbit, twice within the span of one week. The new challenge has a NASA-provided prize purse of $2 million. The objective of the competition is to encourage innovations in propulsion and other technologies, as well as operations and management relevant to safe, low-cost, small payload delivery system for frequent access to Earth orbit. Innovations stemming from this challenge will be beneficial to broader applications in future launch systems. They may enhance commercial capability for dedicated launches of small satellites at a cost comparable to secondary payload launches -- a potential new market with government, commercial, and academic customers. Monday's agreement between NASA and Space Florida for use of facilities at the Kennedy Space Center even better positions the organization for managing this new Nano-Satellite Launch Challenge, said Michael Gazarik, director for NASA's Space Technology Program at NASA Headquarters in Washington. Space Florida has extensive experience working with NASA, the FAA, the Air Force, commercial spaceflight companies and universities to advance their plans for spaceflight operations. We look forward to having the Space Florida Small Satellite Research Center overseeing the competition and bringing together innovative teams with creative problem-solving ideas. Space Florida submitted a proposal last spring in response to a NASA solicitation for this partnership opportunity. They will now begin detailed preparations for the challenge, publishing rules and then registering competitors. The first competition launch attempt is expected to take place in the summer of 2012. The Centennial Challenges seek unconventional solutions to problems of interest to NASA and the nation. Competitors have included private companies, student groups and independent inventors working outside the traditional aerospace industry. Unlike contracts or grants, prizes are awarded only after solutions are successfully demonstrated. NASA's Centennial Challenges program provides the prize purse for the technology and innovation competitions. The competitions are managed by non-profit organizations that cover the cost of operations through commercial or private sponsorships. In October, NASA awarded the largest prize in aviation history following Pipistrel-USA's win of the agency's CAFE Green Flight Challenge, sponsored by Google. NASA's $1.35 million first prize and a $120,000 second prize recognized competitors using electric airplanes to break all previous fuel efficiency records. The technology and innovation used in electric aircraft may end up in general aviation aircraft, spawning new jobs and new industries for the 21st century. There have been 22 Centennial Challenges competition events since 2005. NASA has awarded nearly $6 million to 15 different challenge-winning teams. Centennial Challenges is one of the ten Space Technology programs, managed by NASA's Office of the Chief Technologist. For more information about the program and descriptions of each of the challenge competitions, visit: http://www.nasa.gov/challenges For more information about Space Florida and updates on the Nano-Satellite Launch Challenge, visit: www.spaceflorida.gov/r-d ___ 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] Re: OFDM Transceivers
Thanks, I for one had to look up what OFDM actually is: http://mobiledevdesign.com/tutorials/ofdm/ Stefan, VE4NSA On Tue, Nov 1, 2011 at 9:57 AM, Trevor . m5...@yahoo.co.uk wrote: Just over a decade ago Peleg 4X1GP gave a good presentation to the annual AMSAT-UK Colloquium in Guildford that pointed out that OFDM was the way ahead for Amateur communications. Well 10 years later the first OFDM Amateur transceivers have been announced. Doodle Labs have announced a range of 64 QAM OFDM Transceivers for the Amateur bands above 420 MHz. The 420 MHz transceivers feature speeds of up to 12 Mbps and bandwidths of 10 MHz or 5 MHz, while data throughput of 48 Mbps is claimed on the 1240 MHz verssion. Details of the 420 MHz version are at http://www.doodlelabs.com/products-and-services/amateur-bands/420-450-mhz-band-dl435.html The others in the range can be seen at http://doodlelabs.com/products-and-services.html#Amateur 73 Trevor M5AKA Daily Amateur Radio Email/RSS News: http://www.southgatearc.org/ Email Your News To: editor at southgatearc.org Or Upload At: http://www.southgatearc.org/news/your_news_1.htm ___ 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] Need help to compile Gpredict
Hello, I have been having problems to compile Gpredict on mac. Is anyone gong to the AMSAT meeting and could provide a little help to compile Gredict? thank you. o. ___ 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] AO-27 schedular and website? Whats up.
I remember a note sometime ago that the keeper of the www.ao27.org web site who is also the keeper/sender of the TOPR timing information for the satellite was on a hiatus and that was the explanation of why the web site was not available and the updates to the epoch.txt and topr.txt files that the AO-27 scheduler do not work. It has now been several months since then and still the sites do not work and the software scheduler program will not get updates because the domain is unavailable. It did eventually say that it updated the files successfully but it did take quite a while. Any word on what the status is and more importantly, are the timings for AO-27 being updated periodically to allow for clock drift and orbital changes. Since the turn-on/turn-off schedule is important to the long term survival of the bird and knowing the timings are important to successfully working it, I wonder what is happening here? It Thanks and 73 Tom Schuessler n5...@amsat.org ___ 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
