[amsat-bb] Re: ARISSat-1 Screen Shots
Maybe they will put it on their youtube channel: http://www.youtube.com/user/NASAtelevision If not, we can ask them do so. 73 Alex OZ9AEC On Wed, Aug 3, 2011 at 11:31 PM, Clint Bradford clintbra...@earthlink.net wrote: What a day! And reception reports are already coming in! I apologize for the links that non-Mac folks' systems wouldn't allow entry or didn't like the tinyurl forwarder ... something about long filenames and symbols in the filenames. ANYWAY - Here'a about 60 screenshots taken from the deployment ... http://gallery.me.com/clintbradford#100271 I also have both video sessions: -The first - the first 30+ minutes of EVA29 ... nice footage, but deployment delayed, of course. -The second - the deployment, but no video from ISS nor astronauts' helmets during actual deployment - just audio and static screens during the physical deployment. (But I'll wager that the Russian Federal Space Administration will have some great photos and/or video of it on their site soon ... (grin).) If you are seriously interested in either .flv movie file, please privately email me. They're just under 300MB each ... so I'll post them somewhere for you to download. Clint Bradford clintbradf...@mac.com 909-241-7666 - cell, PDT ___ 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: Hamlib for Windows and COM ports question (re: Gpredict)
Hi Mark, I have not used hamlib in a long time since I now have others to test rig interfaces in gpredict. When I used it few years ago on windows it worked well with high COM-port values. I always used USB to serial converters, which get high values. I would suggest you try the hamlib mailing list since this is where hamlib users and developers hang out: https://lists.sourceforge.net/lists/listinfo/hamlib-developer When you start rigtcl, you can try to pass the option -vv which will enable debug messages. This may reveal what is wrong. Otherwise, I have to say that I am puzzled by the fact that some people use Gpredict on windows to control radios. I didn't know it was possible because the hamlib network daemon (which is required by gpredict) is not available in the windows packages - at least I have never seen it. 73 Alex OZ9AEC On Fri, Mar 18, 2011 at 1:43 PM, Mark L. Hammond marklhamm...@gmail.com wrote: To those who might know--- Does hamlib for Windows support more than just COM1 and COM2 for hardware (radios, trackboxes)? If so, what is the syntax? I've tried the obvious permutations based on the command line help and online help I could find...but it isn't working on COM5. It just hangs with no errors and it's obviously not working either. I am aware of the baud rate command line option, but that's not it...from what I've read it gives the impression (but isn't clearly stated) that it might not support above COM2. Surely that can be fixed (heh...not by me!) Gpredict for Windows is very nice and a super program, but if I can't use ports higher than COM2 because of hamlib, it's use in my shack is very limited... 73, -- Mark L. Hammond [N8MH] ___ 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: GPREDICT
On Tue, Mar 8, 2011 at 8:41 AM, PE0SAT pe0...@vgnet.nl wrote: On Tue, March 8, 2011 03:45, Nigel Gunn G8IFF/W8IFF wrote: Alexandru has just made Gpredict 1.3 available free for all you Windows operators at https://sourceforge.net/projects/gpredict/files/Gpredict/1.3/ Great to here that :) Thanks Nigel! Please note that I have uploaded and updated windows package few minutes ago. The first package had a bug by using an ugly, built-in default theme rather than following the windows theme. It has now been fixed in the new package gpredict-win32-1.3-2.zip Ubuntu Linux users can get the latest package from our PPA: https://launchpad.net/~gpredict-team/+archive/ppa Of course, it's also available for Mac and Linux users. Is there someone who has a compiled a dwg or an other binairy version for Mac OSX? Sorry Jan, I only know of Gpredict in Macports, Fink and the HMUG ports. Theoretically, it should be possible to build a standalone bundle using http://gtk-osx.sourceforge.net/ but I have not have time to try it. 73 Alex OZ9AEC ___ 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: GPREDICT
On Tue, Mar 8, 2011 at 4:25 PM, George and Cheryl Abbott ka1...@cox.netwrote: FYI:My security software gave me two strong warnings about downloading this program. Can you provide any more details about these strong warnings, please? Alex ___ 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: IC-9100
On Fri, Feb 25, 2011 at 6:22 PM, Dave Webb KB1PVH kb1...@gmail.com wrote: HRO has the Icom 9100 on it's site now for the low low price of $3799.95 http://www.hamradio.com/detail.cfm?pid=H0-010763 Wow, when I first saw that radio some time ago I thought it was supposed to be some kind of discount radio since they didn't even include a color display. So, now I am wondering, what is the advantage of one IC-9100 for $3800 over two IC-7000 for $2400? 73 Alex OZ9AEC ___ 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: ARISSat-1 decoding software release
On Thu, Feb 10, 2011 at 1:40 PM, Diane Bruce d...@db.net wrote: On Thu, Feb 10, 2011 at 07:32:40AM +, Gordon JC Pearce wrote: On Wed, 2011-02-09 at 20:01 +, Darren Long wrote: I'd also like access to the source if available. Cheers, Darren, G0HWW I already mentioned that I'd like to get a look at the source. And me please. No, running a Windows binary in Wine is not an option ;-) Quite. Few days ago, a link was posted here to the ARISSat subversion repository. If you look around there you will find the source code for the ARISSatTLM application (hint: https://svn.sarpeidon.net/viewvc/suitsat2/ground_station_software/ARISSatTLM/ ). You will also find the reference modem by Phil KA9Q called demod2. This package contains both DSP library and small command line applications and the whole package can be compiled under linux as is. The demo apps can use pipes for I/O so it is very easy to chain them together to create a complete modem. There are even utilities to add noise and CW message. 73 Alex OZ9AEC ___ 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: ARISSat 1 Funcube Telemetry Question: DBPSK vs BPSK
On Sun, Feb 6, 2011 at 12:36 PM, Iain Young, G7III g7...@g7iii.net wrote: Hi All, Just a quick clarification needed by me on the Telemetry format that is going to be used by ARISSat-1 and Funcube ( I guess the Funcube boards onboard UKube-1...) Lots of places are referring to it as BPSK1000, but I have seen references claiming it is DBPSK. Can someone clarify if it is Differential BPSK, or just plain old BPSK as used before, but at 1000 BPS, rather than 400 ? Reason for asking is that I have a USRP, and use gnuradio, along with the gnuradio-companion. That has DBPSK blocks built in, but pure BPSK would take a little more work (possibly just routing the output to a loopback soundcard, and then running decoding software) Hi Iain, It is differentially encoded. You can find the specification on Phil KA9Q's website: http://www.ka9q.net/bpsk1000.html He has also made his reference modem available under GPL: http://www.ka9q.net/demod2.tar.bz2 The package contains functional application that can send and receive BPSK1000. What I am still missing is description of the telemetry format, i.e. how to translate the decoded data stream into engineering values. Is there such a document available? 73 Alex OZ9AEC ___ 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: Rideshare missions to GTO, only $14 million for Eagle, $800K for 3U Cubesat
On Tue, Feb 1, 2011 at 7:33 PM, Daniel Schultz n8...@usa.net wrote: Spaceflight Services Announces Lunar and GTO Mission Pricing Prague, CZ - September 30, 2010: Spaceflight Services (Spaceflight) announced today pricing for small payloads to Geosynchronous Transfer Orbit (GTO) and Low Lunar Orbit (LLO). Spaceflight, as part of the Rocket City Space Pioneer Google Lunar X-Prize Team, is responsible for mission integration and providing space transportation services to Low Lunar Orbit. Spaceflight is providing flight opportunities for ESPA class spacecraft (spacecraft weighing less than 180 kg) interested in launch services to GTO and Low Lunar Orbit. The proposed mission, which is slated for Q4 2013 or Q1 2014, will deploy three ESPA payloads into a Geosynchronous Transfer Orbit and two additional payloads in a Low Lunar Orbit. The mission is also open to smaller spacecraft looking for a low cost ride to either of these destinations. Mission pricing for small payloads to GTO begins at $795,000 for a 3U CubeSat and up to $13,950,000 for a full ESPA spacecraft. This is considered a Low Cost Ride in the commercial world. This is the free market value of the launch that we are hoping to get for significantly less. Wish us luck... I certainly wish the best of luck with finding a cheap ride! Aside from being GTO, I do not consider their offer to be a good deal at all, since: (1) Their prices are set so that they can finance their own lunar mission (2) The price for a whole Falcon 1 is $11M, which will take 1 metric ton to LEO. (3) Even for a Falcon 9, the price seems to be less than $10M for 1,600 kg to GTO, see http://www.spacex.com/falcon9.php#pricing_and_performance 73 Alex OZ9AEC ___ 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: ARISSAT-1
Today the Soyuz was moved to the launch pad - I assume with ARISSat onboard. Roll-out video from tvroscosmos: http://www.youtube.com/watch?v=8IF8V8212W0 73 Alex OZ9AEC On Tue, Jan 25, 2011 at 6:58 PM, Gould Smith gould...@bellsouth.net wrote: Hello John, There is current information about ARISSat on the front page of the AMSAT Web site. We will use the AMSAT Web site as well as weekly ANS bulletins to release information about ARISSat during the next three weeks. Launch to the ISS 28 Jan 2011 EVA to deploy ARISSat on 16 Feb 2011. The transmitter will turn on 15 minutes after the safety switches are activated. The procedure is to activate the safety switches then push the satellite away from the ISS. 73, Gould, WA4SXM - Original Message - From: jcowe...@comcast.net To: Amsat Bulletin Board amsat-bb@amsat.org Sent: Tuesday, January 25, 2011 11:39 AM Subject: [amsat-bb] ARISSAT-1 What is the projected active date for ARISSAT-1?? John Owens - N7TK Celebrating over 50 Years in Ham Radio No. 1 Honor Roll ___ 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 ___ 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: Another Budget Launch Vehicle
The launch was canceled already Sunday so no more launch attempts this time. They plan to try again in June 2011. Until then we can enjoy these nice photos from the campaign: http://picasaweb.google.com/thomas.tp/HEAT1XPCampaign# Copenhagen Suborbitals has a blog where they provide frequent technical updates: http://ing.dk/artikel/111720-teknik-news It is in Danish but Google translator can provide understandable translation. 73 Alex OZ9AEC On Wed, Sep 8, 2010 at 11:54 PM, Trevor . m5...@yahoo.co.uk wrote: It looks like it's still awaiting launch. The launch window closes Sep 17. It's only going to an altitude of 30km, but lets hope it works and they can move on to bigger rockets. The organisation apparently relies on voluntary donations: http://www.southgatearc.org/news/september2010/danish_rocket_launch.htm 73 Trevor M5AKA --- On Sat, 4/9/10, Jeff Davis j...@ke9v.net wrote: From: Jeff Davis j...@ke9v.net Subject: [amsat-bb] Another Budget Launch Vehicle To: amsat-bb@amsat.org Date: Saturday, 4 September, 2010, 1:56 From Deutsche Welle News... Two Danish entrepreneurs are planning to launch a nine-meter high space rocket from a platform in the Baltic Sea on Saturday. They hope it will eventually pave the way for manned space flight in micro-sized spacecraft. http://goo.gl/Mw6z 73, -- Jeff, KE9V ___ 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 ___ 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-51 obseved solar eclipse?
Greetings, I ran a simulation using the Celestia space simulator and could indeed observe a partial solar eclipse as seen from AO-51 :) I have recorded the simulation to a video and you can watch it on Youtube: http://www.youtube.com/watch?v=7ET8BhbqmVk I couldn't find any 3d model of AO-51 so I used a model of AO-7 - sorry for that. Also note that I used TLEs from today to generate orbital data for Celestia so the time and may not be scientifically accurate. If you want to run the simulation for yourself, watch from other angles, etc., you can get Celestia for free from http://shatters.net/celestia/ You'll need to add the data files for AO-51 in the extras folder; you can use mine to begin with. There is a .zip file here: http://files.oz9aec.net/video/SolarEclipse/ You'll also find the H.264 encoded video there that you are free to download (~100MB). 73 Alex Oz9AEC On Tue, 13 Jul 2010 13:10:41 -0400 Mark L. Hammond marklhamm...@gmail.com wrote: Hello Masahiro, Thank you for your message! You have made a great observation, and I think you are exactly right about the cause of the observed glitches in the telemetry. Usually at this point in its orbit we would observe AO-51 charging its batteries at a steady rate from fully illuminated panels. From what I've read from page 43 here: http://eclipse.gsfc.nasa.gov/SEpubs/2010/TP214171a.pdf the eclipse was from 18:15 to 20:52 UTC.Look also at the areas experiencing eclipse. Please be aware that the clock on AO-51 runs fast. It is now about 3 minutes fast, so look at telemetry timestamped from about 18:18 until 20:55 UTC. Since the duration of the solar eclipse was 2 hrs 39 min (or 159 mins) and AO-51 orbits every 100 minutes or so, it could have been affected two times. I've plotted some of the telemetry collected from that period (telemetry from 1800-2130utc) and posted it here: http://www.amsat.org/amsat/ftp/telemetry/ao51/2010WOD/July2010/Wd071100_1800to2130utc_solar_eclipse.xls And here's a screenshot of AO-51 at the time: http://www.amsat.org/amsat/ftp/telemetry/ao51/2010WOD/July2010/ao51_11July2010_2045utc_solar_eclipse.jpg 73! Mark N8MH 2010/7/13 Masahiro Arai m-a...@a.email.ne.jp: Total solar eclipse was observed in southern Pacific Ocean at 11th July. I checked AO-51 WOD file. Total Array I shows glitch at 2043-2045z. AO-51 was located on east of Argentina at the time. Is this glitch made with solar eclipse?? AO-51 Wd071100 2010/7/11 UTC Total Array I [mA] 20:35 -2.111 20:36 -0.323 20:37 -0.323 20:38 1.465 20:39 -0.323 20:40 528.851 20:41 321.472 20:42 307.170 20:43 183.815 20:44 190.966 20:45 176.664 20:46 249.962 20:47 300.019 20:48 396.557 20:49 498.459 20:50 519.912 20:51 729.079 20:52 634.328 20:53 936.458 20:54 843.495 20:55 948.972 WOD file ftp://ftp.amsat.org/pub/amsat/telemetry/ao51/2010WOD/July2010/Wd071100 AO-51 WOD decoder http://tinyurl.com/DK3WNsoftware 73 Masa JN1GKZ Tokyo Japan ___ 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: LEO/cube sat for sale 8000$
Quoting William Leijenaar pe1...@yahoo.com: Hi AMSATs, I just read the message about the tube-sats. I was having a look to their options, but when I understand well in the structure there is already a radio integrated ? Hi William, You can get a tubesat both with or without electronics/radio. I think you can even use your own structure as long as it fits into the envelope specs. What is the area that can be used for electronics ? The weight is max. 250 grams, which is no problem to handle one off my LE005-R2 linear transponders (weights only 30 grams). Check it on: www.leijenaarelectronics.nl Max OD = 8.94 cm (3.52 in), ID= 8.56 cm (3.37 in), Length = 12.7 cm (5.0 in) So it is slightly smaller than a cubesat in one dimension, but longer in length. You can get the full specs on their website: http://www.interorbital.com/TubeSat_1.htm There is a PDF/word file When there is enough space in the tube-sat to fit my transponder, this is very interresting. Just fill the existing space with Li-ion batts and there you go... Indeed! Anyone already have experience with these tube-sats ? I do not have any practical experience with them, but I know they have been working on their launcher for many years. If I had 8000$ I would buy a tubesat. Of course, since their launcher does not have any track record, it should be considered as high risk. But who cares? I mean if you compare it to the price of a cubesat launch today, which is how much? 8$? 73 Alex OZ9AEC ___ 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: Sun sat thesis
On Tue, 19 Jan 2010 11:47:59 -0500 Bob McGwier rwmcgw...@gmail.com wrote: http://etd.sun.ac.za/handle/10019/1346 Very impressive by Mr. Van Wyk. I wish they had asked me to be an outside reader. ;-). Great reading! Thanks for the pointer Bob. 73 Alex OZ9AEC ___ 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: XW-1 == YAOGAN 8 ?
The influence of the drag force also depends on the mass since F=m*a, so the same drag force will cause less deceleration on a heavier satellite. You have to put this together with F=pressure*surface_area to take both the size and the mass of the satellite into account. By the way, is there any significant atmospheric drag at 1200 km altitude? 73 Alex OZ9AEC On Wed, 16 Dec 2009 18:56:20 + Nigel Gunn G8IFF/W8IFF ni...@ngunn.net wrote: OK, I'll revise my earlier question and suggest a reply. The physically larger satellite will have more atmospheric drag which will spiral it into a lower orbit. The lower orbit, the higher the velocity and thereforeit crosses your horizon earlier. Nigel Gunn G8IFF/W8IFF wrote: Is this correct that the higher mass satellite travels faster than the lower mass of XW? ___ 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: video: stand-alone tracking and tuning with Arduino
Quoting Bruce Robertson ve9...@gmail.com: Gang: The following one-minute video shows my breadboarded Arduino (ATMega328) tracking two satellites and tuning an FT-817 in response. It also shows the chip periodically announcing the location of the bird in CW, and, as a bonus, you'll see AO-51 being received with a simple dipole directly connected to a low-noise preamp. http://www.youtube.com/watch?v=XgNcCGXeRyw This is an application of the Arduino FT-817, Plan 13, CW and Tle EEPROM storage libraries available at: http://code.google.com/p/qrptracker/ Hi Bruce, Very nice work, I enjoy following your progress with this project. ... Right now, however, the code only tunes the downlink, and I have to spelunk through the code for Instanttune to see how to deal with the FT-817 on transmit :-) You should be aware that the FT-817 frequency can not be controlled via CAT during transmission. There are different workarounds implemented in different desktop applications, but AFAIK none of them enable active tuning while PTT is on. On the other hand, you can change the frequency using the dial. The dial is an optical encoder so it might be possible to hack it that way. In my frustration I have actually considered this. 73 Alex OZ9AEC ___ 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: Tubesat, a $4,000 launch opportunity
Greetings, Yes, I think they are very much for real! Interorbital Systems are also part of team SYNERGY MOON, a fully registered team in the Google Lunar X PRIZE. I can only see a price of $8k (not 4k). Still a bargain compared to the price of a cubesat launch today (~$80k I think). The 8k includes all necessary avionics even a radio. Note that the tubesats are placed in an orbit where they will decay within a few weeks. Therefore, long term missions would require some propulsion to bring the tubesat into a higher and stable orbit. Some cubesat builders are already experimenting with micro-propulsion systems for cubesats. 73 Alex OZ9AEC Quoting w7...@comcast.net: I checked to make sure it wasn't April first. As Bruce said, if this is for real, the question should be not putting a linear transponder on it, but how many! For 4K a few of use could pool our Visa cards! 73 Bob W7LRD - Original Message - From: Bruce Robertson ve9...@gmail.com To: AMSAT-BB amsat-bb@amsat.org Sent: Sunday, August 2, 2009 6:02:01 PM GMT -08:00 US/Canada Pacific Subject: [amsat-bb] Tubesat, a $4,000 launch opportunity The first team that puts a linear transponder on board one of these, wins! (And I want William Leijenaar PE1RAH on my team ...) http://spacefellowship.com/2009/08/01/interorbital-syatems-tubesat-personal-satellite-kit/ Seriously, if this is for real, I think AMSAT should get at the front of the train and provide hardware, or hardware design, for those who plan to use it. 73, Bruce VE9QRP ___ 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 ___ 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: Pass predictions and differences in software
Hi LeRoy, Which version of gpredict are you using? The one that is included with Ubuntu? That version is very much out of date and did have several bugs that could affect pass predictions. In particular the time controller function was very immature back then. Did you try the predict pass functions instead of advancing the clock (i.e. right click on a satellite)? 73 Alex OZ9AEC On Mon, 13 Jul 2009 18:27:42 + kd8...@aol.com wrote: Good afternoon I am running gpredict on an ubuntu linux box - I am looking at the SO50 satellite - It is currently 1412 (1812utc) - I advanced the clock of the software forward by about 3 hrs (1712 local) and see what looks like a great pass on screen I went to verify using the webbased prediction on the amsat website, and. Don't see anything in the list of passes even close to what gpredict says will happen in the future I updated the keps thinking maybe they were out day, and got the same results I then fired up my winXP machine and SatPC32 - and got results that are closer to what the amsat site says. When looking at real time, all three show the SO50 in just about the same spot I think I believe the amsat site and satPC32 software. Not sure of the question to this post - wondering more or less what factors effect how the pass predictions work. When they (or at least the two I have control over) have updated keps shouldn't they give the same information or realitivly close - as I look at the two programs running side by side I do see slight differences in where SO50 is located on the map currently. But it is only slight and may have more to do with the scale of the display maps and not the software. If I advance the time thou I don't get the same results. And this confuses me Thanks, LeRoy, KD8BXP http://www.HamOhio.com Sent on the Now Network from my Sprint® BlackBerry ___ 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: Minotaur 1 Launch Video
Both videos work for me. The first one is even higher quality than the second. Thanks for posting. 73 Alex OZ9AEC Quoting Trevor . m5...@yahoo.co.uk: This one works: NASA Launches Minotaur-1PharmaSat TacSat-3 - 20 May 2009 http://www.youtube.com/watch?v=FEs2STSF7Lo 73 Trevor M5AKA --- On Wed, 20/5/09, Trevor . Hi, Trying to play the Minotaur 1(TacSat 3) launch video on YouTube without success. Has anyone else had any luck ? YouTube Minotaur 1(TacSat 3) http://www.youtube.com/watch?v=YEf9trI1Hf8 73 Trevor M5AKA ___ 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 ___ 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
