April 2018 - AMSAT-BB - mailman.amsat.org

no ao92
by Jim White 23 Apr '18

23 Apr '18

ao92 is not workable from here due to local noise. next pass on ao7 at 1744z with window to EU. jim

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xw2c next pass
by Jim White 22 Apr '18

22 Apr '18

will try xw2c 2148z pass jim. wdoe fj/nokv from st barts in fk87

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AO73/FUNcube-1 Operations
by Jim Heck 22 Apr '18

22 Apr '18

Hi All, FUNCube/AO-73 is now in auto mode, switching between full power beacon (in sunlight) and low power beacon with transponder on (in darkness). Have FUN 73s Jim G3WGM and the FUNCube team

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Virginia Tech pictures
by radiomb 22 Apr '18

22 Apr '18

Is there an article or location that I can find how to copy Virginia Tech pictures from AO-92. I would like to receive some pictures. Tnx 73 Mike K4MIA | | Virus-free. www.avast.com |

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Salado ARISS audio recording from April 17
by Ronald G. Parsons 22 Apr '18

22 Apr '18

The link below contains an audio recording from the recent ARISS school contact in Salado, TX on April 17, 2018. https://drive.google.com/file/d/1RvN-c1BgYjuHjixGjfJACr9EZDk5WVyt/view?usp=… Ron Parsons W5RKN

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[Video] Pinson Valley Highschool ARISS contact
by John Brier 21 Apr '18

21 Apr '18

https://youtu.be/xIPkOV_ASR8 Astronaut Scott Tingle* talking to Pinson Valley Highschool students on April 10th, 2018. This is a quick edit mostly so the folks in Alabama can see what it sounded like from a completely different place. I received this in downtown Raleigh, North Carolina, at the Red Hat parking deck, where I work. I missed the first half of the contact because it came in range of me after it was already in range of the school. I also missed a good portion of my pass due to a big building downtown blocking the signal. At the end since it was still in range of me after it went out of range for them, I may have received some transmissions from Scott that they missed, or at least with less noise. 73, John Brier KG4AKV * Ricky Arnold was scheduled to talk to the students but I'm almost certain this is Scott Tingle who has been doing a lot of ARISS contacts lately.

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Wouxun KG-UV9D
by alex weimer 21 Apr '18

21 Apr '18

I have a like new Wouxun KG-UV9D dual band full duplex HT that I am not using. and would like to sell !! Great to work the U/V satellites like AO92 Ao91 and AO85. Comes with complete accessories when bought new. If interested I have plenty of pictures to show. Email me at ingejack(a)cox.net mailto:[email protected] for details. Thanks JACK KC7MG

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Amateur Deep Space Tracking
by Nico Janssen 21 Apr '18

21 Apr '18

All, Many radio amateurs are familiar with tracking amateur satellites that orbit the Earth in low orbits or high elliptical orbits. Several tracking programs and all required orbital parameters are available for tracking these satellites. But soon spacecraft carrying an amateur radio payload will be launched towards the Moon and beyond. If amateurs want to track these spacecraft they will need suitable tracking software and orbital elements to be able to calculate the positions of these spacecraft. Calculations Unfortunately none of the currently available tracking programs, used for satellite tracking by amateurs, is suitable for deep space tracking. But fortunately two free, open source software packages for Windows, Linux and Mac are available, that will enable deep space tracking: General Mission Analysis Tool (GMAT) http://gmatcentral.org/ https://sourceforge.net/projects/gmat/files/GMAT/GMAT-R2017a/ SciLab, including CelestLab, CelestLabX and Aerospace Blockset http://www.scilab.org/ http://atoms.scilab.org/toolboxes/celestlab https://atoms.scilab.org/toolboxes/aerospace_blockset Probably most amateurs will prefer GMAT, because it is most user friendly, has a lot of documentation and help files, and contains many sample scripts. Scripts that are created by other amateurs can be used without having much knowledge or experience with GMAT. Measurements It is not certain that orbital elements for all deep space spacecraft carrying amateur radio payloads will be made available to radio amateurs. Therefore amateurs may need to measure these orbital elements themselves through doppler and ranging measurements. So amateurs will need to set up their own Amateur Deep Space Network, similar to NASA's DSN, ESA's Estrack, etc. This will require some stations with large enough antennas and with equipment to carry out doppler and ranging measurements to determine direction and distance to the spacecraft. This new development is an interesting challenge for radio amateurs. For further details see my Amateur Deep Space Tracking page: https://hamsat1.home.xs4all.nl/index.html You can find further information on space flight on this very informative set of pages: https://solarsystem.nasa.gov/basics/ Deep space navigation is covered in chapter 13: https://solarsystem.nasa.gov/basics/chapter13-1/ 73, Nico PA0DLO

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Can I borrow a good presentation.
by tjschuessler＠verizon.net 21 Apr '18

21 Apr '18

Hi all, My local radio club here in Irving, TX prevailed upon me to do a presentation for our April meeting in a week. "I'll do it on satellites" I said. I wondered if I could get any recommendations/permission to use a recent basic introduction to satellites PowerPoint presentation. You will get credit I promise. I just don't have the time to reinvent the wheel. Response off list would be just fine. Thanks. Tom Schuessler, N5HYP at arrl dot net EM12ms

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fj passes
by Jim White 21 Apr '18

21 Apr '18

great fo29 pass a few mins ago. next pass ao92 at 1434z we are attempting all visible passes to the west or overhead today on ao92, fo29, so50, ao85, ao91 and will give ao7 a shot at 1744z. working on the possibilty of europe this evening on 7 or 29 but have some hills to the east about the only hf working at all is ft8 on 30. prop gods not happy. @amsat jim

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