[amsat-bb] Re: Improving satellite reporting
Hi AMSATs, The tinny transponder design is finished and tested. I can make copies when there is interrest. My visit to Ham Fair in Tokyo was for me a kind of milestone to finish the design and make it public to the people. (I like to design something well done, before make it available to others, this avoids modifications and extra work later). It is not easy to make the LE005-R2 transponder design without having the right tools. This is also the reason why I cannot sell it like a kit for people to solder at home. The design is made at a profesional level (as development engineer I am dealing with it dayly) and can be made with use of a pick and place machine and reflow soldered for large quantities in a factory when needed. This is only profitable at large quantities. For small quantities its cheaper and faster to do it with my small reflow system. The quality is guarenteed as I can do manual inspection and full testing myself. The next step is doing space environment tests, but that takes some more time and money. In case you have a working thermal vaccuum chamber in your garage, let me know ;o) The LE005-R2 is designed for space environment but not officially tested yet. However, the design is well suited for applications like terresterial transponders. 73, with kind regards, William Leijenaar, PE1RAH --- - Original Message - From: Bruce Robertson ve9...@gmail.com To: AMSAT-BB amsat-bb@amsat.org Sent: Thursday, September 03, 2009 8:04 AM Subject: [amsat-bb] Improving satellite reporting [snip] (Similarly, I hope that William's extraordinary vision in building his transponder board might, after broad testing and examination, be validated by it becoming an 'AMSAT' off-the-shelf product. With William's approval, let's appeal for the bucks to have a team of people replicate these, test them, and set them up as temporary terrestrial repeaters around the world. We'd much more easily convince a cubesat team to include one of these if we could say one was running uninterrupted in Toronto for a year, or if we could have them do a QSO through one in a live demo!) 73, Bruce VE9QRP Hey, if William will make the boards available, I'll start building one tomorrow!!! 73, George, KA3HSW ___ Sent via amsat...@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: Why PCSAT is hard to recover
Thank you Bob... You always have a refreshing, clear, informative response for any inquiry into your systems. The fact that you recognize a design error publicly reassures us neophytes that new designs are built considering past events. It's always a pleasure hearing one of your explanations. Roger WA1KAT - Original Message - From: Robert Bruninga bruni...@usna.edu To: 'Patrick Green' pagr...@gmail.com Cc: amsat-bb@amsat.org Sent: Friday, September 04, 2009 9:44 AM Subject: [amsat-bb] Why PCSAT is hard to recover Why is pcsat having so much trouble carrying its 5 watts then? Even when the satellite is in full sun? Even on the Z panel? ...what went wrong. Error in design. Since it was our first satellite, and the first time that hamtronics TX and RX were flown in space, we put in multiple redundancy. Two identical RX=TNC=TX systems. We thought the most important thing was the command link. To make sure we could still access both TNC systems even with a TX or RX failure we added a second UHF RX to both systems. In additionl we had a relay to CROSS-CONNECT the transmitters. THen we made the mistake. We assumed that to recover from an anomoly, the most important thing was to regain the command link. Hence, from cold-boot, the spare UHF receivers would both come on AND the transmitters would be cross-connected. This assured we could access either TNC even if we had lost one RX or one TX. The mistake was assuming that in such a recovery effort, the first thing we would then do is TURN OFF the extra receivers and DISCONNNECT the cross conneced transmitters once we had command. Well... DUH If the reason the spacecraft crashed back to defaults was because it was low on power, then the last thing you want to do is QUADRUPLE the power budget by having the recovery-defaults turn on double the number of receivers and double the number of transmitters! So we need FOUR times the average power just to get command and that only happens during mid-day passes during maximum eclipse periods, and sometimes right at the beginning of full sun periods in the southern hemisphere. Our first commmand then IN SEQUENCE is 1) LOGON 2) Send command to separate the transmitters 3) Send command to turn off the two spare UHF reciverss If those are successful, AND PCSAT then has a full orbit in full sun, then we can recover. But the loggon password challenge from the satellite is the LONGEST packet in the command sequence, and if is not successful on the FIRST try, then the battery is exhausted and you loose the pass. Bob, Wb4APR On Sep 3, 2009, at 17:34, Robert Bruninga bruni...@usna.edu wrote: To get good coverage you need as many LEO satellites as possible so they should each be as small as possible. Intersatellite linking could be done via automated ground stations. This eliminates the need for high-power transmtters and/or high-gain antennas on the satellites for interlinkng. Yep, that is what we have been trying to do now for 8 years with the APRS satellites on 145.825. We just need several of them in orbit at the same time. We have demonstrated dual-hops several times whenever two or more of the APRS satellites (and ARISS) are operational at the same time. If we could get 6 to 10 of the University cubesats to simply carry the 3.4 square APRS transponder (Byonics TinyTrck-4), then we would have a constellation providing nearly continuous connectivity via these satellites from any handheld or mobile APRS radio. With 6, you might have to wait 30 minutes or so to make yoru contacts. With 10 or so, you might have to wit no more than 5 to 10 minutes for connectivity. See www.aprs.org/cubesat-comms.html It's better to put that gain and power consumption on earth. The advantage of the APRS satellite concept and Packet, is that we can use a 5 Watt transmitter on the satellite to be able to hit any mobile or HT using its existing omni antenna because the packet has a low dutycycle. So running 5 watts on a cubesat is easy, because the transmitter dutycycle is only on less than say 5% of the whole-orbit time. (average power 1/4 Watt) Whereas ECHO which is on all the time, has to be set at 1/4 watt TX power because it is on all the time. Also, EVERY APRS satellite would be on the same frequency 145.825 with no doppler to track, and since every one of them does the same generic relay, independent of callsign, then the user on the ground just operates... He does not have to do anything to go from one satellite to another... Bob, WB4APR ___ Sent via amsat...@amsat.org. Opinions expressed are those of the author. Not an AMSAT-NA member? Join now to support the amateur satellite program! Subscription settings:
[amsat-bb] Re: Why PCSAT is hard to recover
I would like to reiterate the sentiment Roger states. This list is occasionally overtaken by emotionally charged shoulda-woulda-coulda threads. Bob's clear and concise posts, that are understandable by those of us that are not satellite experts, continue to make the Amsat-bb list worthy of a daily read. Randy KI4LMR -Original Message- From: amsat-bb-boun...@amsat.org [mailto:amsat-bb-boun...@amsat.org] On Behalf Of Roger Kolakowski Sent: Friday, September 04, 2009 9:22 AM To: bruni...@usna.edu; 'Patrick Green' Cc: amsat-bb@amsat.org Subject: [amsat-bb] Re: Why PCSAT is hard to recover Thank you Bob... You always have a refreshing, clear, informative response for any inquiry into your systems. The fact that you recognize a design error publicly reassures us neophytes that new designs are built considering past events. It's always a pleasure hearing one of your explanations. Roger WA1KAT - Original Message - From: Robert Bruninga bruni...@usna.edu To: 'Patrick Green' pagr...@gmail.com Cc: amsat-bb@amsat.org Sent: Friday, September 04, 2009 9:44 AM Subject: [amsat-bb] Why PCSAT is hard to recover Why is pcsat having so much trouble carrying its 5 watts then? Even when the satellite is in full sun? Even on the Z panel? ...what went wrong. Error in design. Since it was our first satellite, and the first time that hamtronics TX and RX were flown in space, we put in multiple redundancy. Two identical RX=TNC=TX systems. We thought the most important thing was the command link. To make sure we could still access both TNC systems even with a TX or RX failure we added a second UHF RX to both systems. In additionl we had a relay to CROSS-CONNECT the transmitters. THen we made the mistake. We assumed that to recover from an anomoly, the most important thing was to regain the command link. Hence, from cold-boot, the spare UHF receivers would both come on AND the transmitters would be cross-connected. This assured we could access either TNC even if we had lost one RX or one TX. The mistake was assuming that in such a recovery effort, the first thing we would then do is TURN OFF the extra receivers and DISCONNNECT the cross conneced transmitters once we had command. Well... DUH If the reason the spacecraft crashed back to defaults was because it was low on power, then the last thing you want to do is QUADRUPLE the power budget by having the recovery-defaults turn on double the number of receivers and double the number of transmitters! So we need FOUR times the average power just to get command and that only happens during mid-day passes during maximum eclipse periods, and sometimes right at the beginning of full sun periods in the southern hemisphere. Our first commmand then IN SEQUENCE is 1) LOGON 2) Send command to separate the transmitters 3) Send command to turn off the two spare UHF reciverss If those are successful, AND PCSAT then has a full orbit in full sun, then we can recover. But the loggon password challenge from the satellite is the LONGEST packet in the command sequence, and if is not successful on the FIRST try, then the battery is exhausted and you loose the pass. Bob, Wb4APR On Sep 3, 2009, at 17:34, Robert Bruninga bruni...@usna.edu wrote: To get good coverage you need as many LEO satellites as possible so they should each be as small as possible. Intersatellite linking could be done via automated ground stations. This eliminates the need for high-power transmtters and/or high-gain antennas on the satellites for interlinkng. Yep, that is what we have been trying to do now for 8 years with the APRS satellites on 145.825. We just need several of them in orbit at the same time. We have demonstrated dual-hops several times whenever two or more of the APRS satellites (and ARISS) are operational at the same time. If we could get 6 to 10 of the University cubesats to simply carry the 3.4 square APRS transponder (Byonics TinyTrck-4), then we would have a constellation providing nearly continuous connectivity via these satellites from any handheld or mobile APRS radio. With 6, you might have to wait 30 minutes or so to make yoru contacts. With 10 or so, you might have to wit no more than 5 to 10 minutes for connectivity. See www.aprs.org/cubesat-comms.html It's better to put that gain and power consumption on earth. The advantage of the APRS satellite concept and Packet, is that we can use a 5 Watt transmitter on the satellite to be able to hit any mobile or HT using its existing omni antenna because the packet has a low dutycycle. So running 5 watts on a cubesat is easy, because the transmitter dutycycle is only on less than say 5% of the whole-orbit time. (average power 1/4 Watt) Whereas ECHO which is on all the time, has to be set at 1/4 watt TX power because it is on all the time.
[amsat-bb] Re: Trolls on the -bb
I have always enjoyed being told I was an idiot for not doing something I actually did (in this case we). We have and I bet still are pursuing these opportunities. I don't know, I am on the outside looking in (by choice). Like all things it is always easy to say why don't you? rather than to ask did you? and then ask why has it not worked? and may I be of some service?. (Don't bother now, you have surely pissed a bunch of people off). But you were not really looking for information here were you?. Having lived in a few glass houses, I recommend not getting into stone throwing and to go positive. It is always why don't they isn't it, why is that? If you have influence with STP that would be good to offer. You should probably know ahead of time that the immediate past president of AMSAT worked on and flew a satellite in the STP program (Midstar) and even with that level of connection we have gained no traction. The up front buy in is very hard to get. STP may seem like it is open to all but the reality feels a whole lot like some completely different than open to all and that some pretty sure ideas of who would get these rides was done ahead of time and includes but is not necessarily limited to the owners of Midstar and related institutions as being examples of the good guys. AMSAT not being a good guy, we can't even get an invite to a meeting on how to get invited. The general tone of the amsat-bb these days seems to be condemnation of failure to achieve the near impossible rather than asking for an accounting of why it is so difficult over and over. I see that even then, people will (in their understandable frustration) lash out and call you a bum and a liar. Even when explanations of the difficulty are provided, they appear to fall on deaf ears and blind eyes. Karl Meinzer, he of the never failed to get one before launch history, has utterly failed to get a ride for P3e. We in amsat-na tried in all sorts of ways to help get this going. We built equipment for it and helped in other ways and even paid for ongoing support of housing P3e (done in open board meetings and I believe that every single one of the motions for $$ support in these board meetings was made by me). We then ran head long into the HORROR of ITAR. Please read the president's message here http://www.amsat.org/amsat-new/index.php of how it has taken years and tens of thousand of dollars in legal fees to just get a you have been bad, don't be bad again or you will be fined and maybe clobbered. And only after all of that can we now ask officially can we PLEASE go play with our friends in the amateur radio sandbox? If at 56 I have learned anything at all from my failures and successes it is that it is always better to walk a mile in someone else's shoes before throwing a stone and if you cannot get anyone to listen to you, give up before you sound like a shrill moron and live to fight another day. I am certain this is a lesson it is better to learn late than not at all. Bob N4HY Timothy J. Salo wrote: John B. Stephensen wrote: P3E is a HEO with the same engine as P3D and no benefactor funding a launch. It seems more reasonable to focus on projects that we can pay to launch or where someone has already donated the launch. I believe that AMSAT should at least consider using the DoD Space Test Program (STP), which provides launches for satellites of interest to the federal government. In fact, the STP has already launched a number of amateur satellites. Of course, HEO launches will still be hard to come by. But, I think it is pretty clear that amateurs can't afford an HEO launch, so we ought to at least try to find someone else to pay for it. But, in order to get the government to pay, we need to tell a story that the government is interested in. In my view, the federal government is most likely to fund at least two types of projects: o Projects that develop the next generation of space scientists and engineers. (This is a large part of the reason NASA funds ARISS and SAREX activities. I think this is also why the Naval Academy stuff gets launched.) o Research projects. Note that AO-40 actually flew a NASA GPS experiment that resulted in at least one journal article. Unfortunately, no one seems to want to talk about research experiments that have flown on, and often subsidized, amateur satellites (much less display this information prominently on the AMSAT Web pages). Perhaps more importantly, I don't believe that the federal government is likely to fund us primarily to provide emergency communications. There are simply too many other alternatives available today: satellite phones, cellular-base-stations-on-a-truck, and lots of fixed and portable satellite ground stations. If you have an interest in this topic, you might want to read my DoD Space Test Program paper. (Unlike
[amsat-bb] FO-29 schedule
4 Sep 22:45UTC 5 Sep 21:50UTC JE9PEL, Mineo Wakita ___ Sent via amsat...@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: Trolls on the -bb
I can clarify this: I believe that AMSAT should at least consider using the DoD Space Test Program (STP), which provides launches for satellites of interest to the US federal government. Its not the Feds, its only DOD exclusively. Not even NASA can participate in STP. We have been briefing the STP for a decade now, and are very familiar with the process. And it is not even close to open to all. It is a Department of Defense program that priortizes DOD payloads. Nothing else. And the number one selection criteria is DOD Relevance. In fact, the STP has already launched a number of amateur satellites. Sort-of. The Naval Academy and NRL have gotten a few rides to space, but not because they met STP criteria. Our only DOD relevance is space education and even that is evaluated dead last (65 out of 65)... Our rides were mostly out of back door luck. It only works if someone is on the inside, and a lucky opportunity is found(see below). But, in order to get the government to pay, we need to tell a story that the government is interested in. o Projects that develop the next generation of space scientists/engineers. Our briefs are exactly on that basis and we are always evaluated dead last. o Research projects. ... o [emergency comms] ... I don't believe that the fed... is likely to fund us primarily to provide emergency comms. There are simply too many other alternatives available today... True, except, they all need infrastructure and investment, and they all want hundreds of megabits per second all the time! From anywhere anytime... They kill any modest idea with chrushing requirements creep. Once, when explaining this crushing demand which dooms almost every simple solution, I did get a great comment in support of the KISS principle from the skipper of a Nuclear Sub. While describing my attempts to get the 145.825 MHz Packet digipeater satellites operating at 1200 baud to support HT and Mobile amateur radio emergency text messaging (APRS), his comment was something like this:.. 1200 baud? Great! When my sub has NO COMMS AT ALL, a 1200 baud CHAT channel sounds FANTASTIC!... And look at the popularity of text messaging, IM, Twitter, etc. A lot can be said in a few dozen bytes. We should concentrate on the KISS principle... By the way, the AFRL University Nanosatellite Program (UNP) Web site [!] says that 3,500 students have participated in the program over the last decade. Yes! And most of the time when I meet these students at conferences, etc, they are not hams and have no idea what the amateur radio hobby is about, and so they are not like us, focused on the comms, but instead are focused on something else. My comments about getting a launch through STP may sound negative, but they are not. They are simply saying that the way through STP has to be at the backdoor, through the STUDENTS and the UNIVERSITIES. That is where we are failing to make the contacts and mentoring them through the joy of communictions as an end in itself. If they WANT to communicate and let others communicate, then they WILL find a way to wriggle it on board as part of their research and their education... And I can think of no better proponents for modest data-rate TEXT MESSAGING, then the teens and 20-somethings that live and breath it. See my article on Universal HAM Radio Text Messaging in the Sept QST. And or this web page: www.aprs.org/aprs-messaging.html Anyway, we need to mentor the students (or anyone else that has backdoor access to potential projects that might fly). A modern amateur radio transponder can be the size of a pack of cigaretts and can fit on just about anyone else's ride... Bob, Wb4APR ___ Sent via amsat...@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: Why PCSAT is hard to recover
Is this cross-connect sequence hard coded in the firmware? No way to replace that small bit of code directly from earth? We used the KISS principle and since we had no programmers on the team, we put no cotroller or CPU on board. PCSAT is nothing but a pair of TNC's, and pairs of TX and RX's. And a simple 555 timer chip that reboots them if they have not beaconed in over a minute. The STOCK TNC's have all the command, control, telemetry, I/O we needed. All of our satellites to date flew with nothing but a TNC as the system with the 555 backup timer as a fail safe reset. Bob On 9/4/09 9:44 AM, Robert Bruninga bruni...@usna.edu wrote: Why is pcsat having so much trouble carrying its 5 watts then? Even when the satellite is in full sun? Even on the Z panel? ...what went wrong. Error in design. Since it was our first satellite, and the first time that hamtronics TX and RX were flown in space, we put in multiple redundancy. Two identical RX=TNC=TX systems. We thought the most important thing was the command link. To make sure we could still access both TNC systems even with a TX or RX failure we added a second UHF RX to both systems. In additionl we had a relay to CROSS-CONNECT the transmitters. THen we made the mistake. We assumed that to recover from an anomoly, the most important thing was to regain the command link. Hence, from cold-boot, the spare UHF receivers would both come on AND the transmitters would be cross-connected. This assured we could access either TNC even if we had lost one RX or one TX. The mistake was assuming that in such a recovery effort, the first thing we would then do is TURN OFF the extra receivers and DISCONNNECT the cross conneced transmitters once we had command. Well... DUH If the reason the spacecraft crashed back to defaults was because it was low on power, then the last thing you want to do is QUADRUPLE the power budget by having the recovery-defaults turn on double the number of receivers and double the number of transmitters! So we need FOUR times the average power just to get command and that only happens during mid-day passes during maximum eclipse periods, and sometimes right at the beginning of full sun periods in the southern hemisphere. Our first commmand then IN SEQUENCE is 1) LOGON 2) Send command to separate the transmitters 3) Send command to turn off the two spare UHF reciverss If those are successful, AND PCSAT then has a full orbit in full sun, then we can recover. But the loggon password challenge from the satellite is the LONGEST packet in the command sequence, and if is not successful on the FIRST try, then the battery is exhausted and you loose the pass. Bob, Wb4APR On Sep 3, 2009, at 17:34, Robert Bruninga bruni...@usna.edu wrote: To get good coverage you need as many LEO satellites as possible so they should each be as small as possible. Intersatellite linking could be done via automated ground stations. This eliminates the need for high-power transmtters and/or high-gain antennas on the satellites for interlinkng. Yep, that is what we have been trying to do now for 8 years with the APRS satellites on 145.825. We just need several of them in orbit at the same time. We have demonstrated dual-hops several times whenever two or more of the APRS satellites (and ARISS) are operational at the same time. If we could get 6 to 10 of the University cubesats to simply carry the 3.4 square APRS transponder (Byonics TinyTrck-4), then we would have a constellation providing nearly continuous connectivity via these satellites from any handheld or mobile APRS radio. With 6, you might have to wait 30 minutes or so to make yoru contacts. With 10 or so, you might have to wit no more than 5 to 10 minutes for connectivity. See www.aprs.org/cubesat-comms.html It's better to put that gain and power consumption on earth. The advantage of the APRS satellite concept and Packet, is that we can use a 5 Watt transmitter on the satellite to be able to hit any mobile or HT using its existing omni antenna because the packet has a low dutycycle. So running 5 watts on a cubesat is easy, because the transmitter dutycycle is only on less than say 5% of the whole-orbit time. (average power 1/4 Watt) Whereas ECHO which is on all the time, has to be set at 1/4 watt TX power because it is on all the time. Also, EVERY APRS satellite would be on the same frequency 145.825 with no doppler to track, and since every one of them does the same generic relay, independent of callsign, then the user on the ground just operates... He does not have to do anything to go from one satellite to another... Bob, WB4APR ___ Sent via amsat...@amsat.org. Opinions expressed are those of the
[amsat-bb] Demo from DM13 Thursday Night
THANK YOU to the operators in Mexico and the United States for making my demonstration to the Moreno Valley (CA) Amateur Radio Assn. a success last night! They were, indeed, properly impressed! My upcoming How to Work Ham Sats With Your HT presentations ... September 11 - EchoLink/IRLP via K0GQ September 17 - Conejo Valley ARC October 5 - WARA (Fullerton) meeting October 17 - Victor Valley ARC’s JOTA Clint Bradford, K6LCS http://www.k6lcs.com ___ Sent via amsat...@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: Improving satellite reporting
What are you using for reflow soldering? 73, John KD6OZH - Original Message - From: William Leijenaar pe1...@yahoo.com To: amsat-bb@amsat.org Sent: Friday, September 04, 2009 13:29 UTC Subject: [amsat-bb] Re: Improving satellite reporting Hi AMSATs, The tinny transponder design is finished and tested. I can make copies when there is interrest. My visit to Ham Fair in Tokyo was for me a kind of milestone to finish the design and make it public to the people. (I like to design something well done, before make it available to others, this avoids modifications and extra work later). It is not easy to make the LE005-R2 transponder design without having the right tools. This is also the reason why I cannot sell it like a kit for people to solder at home. The design is made at a profesional level (as development engineer I am dealing with it dayly) and can be made with use of a pick and place machine and reflow soldered for large quantities in a factory when needed. This is only profitable at large quantities. For small quantities its cheaper and faster to do it with my small reflow system. The quality is guarenteed as I can do manual inspection and full testing myself. The next step is doing space environment tests, but that takes some more time and money. In case you have a working thermal vaccuum chamber in your garage, let me know ;o) The LE005-R2 is designed for space environment but not officially tested yet. However, the design is well suited for applications like terresterial transponders. 73, with kind regards, William Leijenaar, PE1RAH --- - Original Message - From: Bruce Robertson ve9...@gmail.com To: AMSAT-BB amsat-bb@amsat.org Sent: Thursday, September 03, 2009 8:04 AM Subject: [amsat-bb] Improving satellite reporting [snip] (Similarly, I hope that William's extraordinary vision in building his transponder board might, after broad testing and examination, be validated by it becoming an 'AMSAT' off-the-shelf product. With William's approval, let's appeal for the bucks to have a team of people replicate these, test them, and set them up as temporary terrestrial repeaters around the world. We'd much more easily convince a cubesat team to include one of these if we could say one was running uninterrupted in Toronto for a year, or if we could have them do a QSO through one in a live demo!) 73, Bruce VE9QRP Hey, if William will make the boards available, I'll start building one tomorrow!!! 73, George, KA3HSW ___ Sent via amsat...@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...@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: FO-29 schedule
Hi Mineo, Why only over Japan ? 73 de i8CVS Domenico - Original Message - From: Mineo Wakita ei7m-...@asahi-net.or.jp To: amsat-bb@amsat.org Sent: Friday, September 04, 2009 4:58 PM Subject: [amsat-bb] FO-29 schedule 4 Sep 22:45UTC 5 Sep 21:50UTC JE9PEL, Mineo Wakita ___ Sent via amsat...@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...@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] FT-897D
Fun day .. My FT 897D arrived.. Learning all the menus and features is always a great time ;) I do have a couple of questions about the rig if there is a Couple of you on the list that have a lot of experience With it.. Mostly to do with digital modes and / or just using the Audio out / in for PSK , etc. The other is that I want to switch to WFM at 137.XXX for the weather Satellites and doesn't look like the rig will do that? My yaesu G5500 came as well .. Damaged .. :( So it has to go back .. Even took a day of to have fun soldering and Getting it up on the mast .. Oh well .. Anyways.. Any knowledgeable ( on the FT-897 ) volunteers out there in the crowd ?? Randy - N2CUA PS .. Thanks so very much for all the help the list has provided .. You all are super !!! ___ Sent via amsat...@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: CUTE-I silent
Hello Mike; Rx very clear telemetery from CUTE-1 on whole pass of 19:10z 11 deg pass. 73, Dan ON5UE ___ Sent via amsat...@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] Satellite tracking in google earth
Is there a ham radio equivalent ? http://agrg.cogs.nscc.ca/node/81 -- Andrew Rich Airways Technical Officer Grade 4 Surveillance - RADAR ADS-B Amateur Radio Callsign VK4TEC email: vk4...@tech-software.net web: www.tech-software.net ___ Sent via amsat...@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: CUTE-I silent
Hello Mike; Rx very clear telemetery from CUTE-1 on whole pass of 19:10z 11 deg pass. 73, Dan ON5UE ___ Sent via amsat...@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 tracking in google earth
The amateur satellites are included. Once you load Google Earth and it in turn downloads the data you can turn off those satellites you don't want but first go to the bottom of the alphabetic data and un-check the debris, rocket bodies and inactive satellites to reduce the clutter. -Original Message- From: amsat-bb-boun...@amsat.org [mailto:amsat-bb-boun...@amsat.org] On Behalf Of Andrew Rich (Home) Sent: September 3, 2009 9:08 PM To: amsat-bb@amsat.org Subject: [amsat-bb] Satellite tracking in google earth Is there a ham radio equivalent ? http://agrg.cogs.nscc.ca/node/81 -- Andrew Rich Airways Technical Officer Grade 4 Surveillance - RADAR ADS-B Amateur Radio Callsign VK4TEC email: vk4...@tech-software.net web: www.tech-software.net ___ Sent via amsat...@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...@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-7
Does anyone know which mode AO-7 is currently in and is there a Place to go and find that info on a website? Randy - N2CUA ___ Sent via amsat...@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: Why PCSAT is hard to recover
At 11:44 PM 9/4/2009, Robert Bruninga wrote: Well... DUH If the reason the spacecraft crashed back to defaults was because it was low on power, then the last thing you want to do is QUADRUPLE the power budget by having the recovery-defaults turn on double the number of receivers and double the number of transmitters! Oops, yes, you live and learn. Sometimes it's hard to guess which scenario is going to be the most troublesome, when you first try your hand at something new. I'm sure future APRS satellites won't have this problem, thanks to your experience. And well explained too. 73 de VK3JED / VK3IRL http://vkradio.com ___ Sent via amsat...@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: AO-7
Right now the satellite is in constant illumination, so the 24 hour mode change timer is working. It toggles the spacecraft between Mode A and Mode B. I look at http://oscar.dcarr.org/ or http://www.planetemily.com/ao7/ao7log.php for an up to the orbit determination. 73, Drew KO4MA - Original Message - From: Randy rswa...@twcny.rr.com To: amsat-bb@amsat.org Sent: Friday, September 04, 2009 5:46 PM Subject: [amsat-bb] AO-7 Does anyone know which mode AO-7 is currently in and is there a Place to go and find that info on a website? Randy - N2CUA ___ Sent via amsat...@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...@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: Increasing range from LEO/SpaceX/APRS
Luc Leblanc VE2DWE Skype VE2DWE www.qsl.net/ve2dwe WAC BASIC CW PHONE SATELLITE ___ Luc those are good thoughts. I went to a mindset of more PCSAT satellites with the SpaceX thing...but of course the theory is just a platform to carry a small payload. The small transponder you mention is indeed amazing. I wonder as well if there are some opportunities with the Japanese in terms of their transfer vehicle (interesting to see the differences between that vehicle and the European one). There are massive changes coming in how space is done in the US. If Falcon 1E and 9 are success...hang on to your hats. Robert WB5MZO _ Windows Live: Keep your friends up to date with what you do online. http://windowslive.com/Campaign/SocialNetworking?ocid=PID23285::T:WLMTAGL:ON:WL:en-US:SI_SB_online:082009 ___ Sent via amsat...@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: FO-29 schedule
FO-29 still has some trouble. Therefore it is examination use for a while only over Japan. We do not yet understand when it restore. But there are the reception report from South America and Europe. You may listen to CW with luck over your area. JE9PEL, Mineo Wakita ___ Sent via amsat...@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] W6ZQ and NH7WN on AO-51 from Hawaii tonight
Hi! Thanks again to Ron W6ZQ for another Hawaiian grid on AO-51. Ron drove not too far south of where he is currently staying on Kauai (BL02), to put BL01 on the air on the 0246 UTC AO-51 pass. Robert NH7WN from Honolulu (BL11) was also on the same pass. I had a maximum elevation of 4 degrees for this pass, and was able to work W6ZQ at just under 2 degrees elevation and NH7WN at just over 3 degrees elevation. I think W6ZQ logged some QSOs before I could hear the downlink, then I worked him and heard him work 6 others before I lost the downlink. Robert was also working a few stations during the pass, and I think Ron and Robert worked each other for an inter-island QSO out there. Thanks to both of them for making the effort to work us on the mainland, and to the other operators for an orderly pass that allowed for many QSOs! Ron did not say when he would try to work the US mainland via satellite again on his trip, but said he wants to get on again at some other point this month from Hawaii. If I get any more news from him on his plans, I'll post it on here. Robert comes on from time to time, and hopefully he's getting more of an assortment of calls in his satellite log in Honolulu (and, maybe, some other grids). 73! Patrick WD9EWK/VA7EWK http://www.wd9ewk.net/ (I'm heading to DM31 tomorrow; hope to work a bunch of you then!) ___ Sent via amsat...@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
