- AMSAT-BB - mailman.amsat.org

Re: [amsat-bb] HEO junk?
by Joseph B. Fitzgerald 24 Jul '20

24 Jul '20

Not all comet watchers enjoy seeing man made objects apparently. This Facebook post has generated a lot of press. https://www.facebook.com/elcielodecanarias.es/photos/a.224658390885198/4415… de KM1P

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Re: [amsat-bb] HEO junk?
by Vince Fiscus, KB7ADL 24 Jul '20

24 Jul '20

At 07:38 PM 7/24/2020 +0000, jfitzgerald(a)alum.wpi.edu wrote: >Not all comet watchers enjoy seeing man made objects apparently. This >Facebook post has generated a lot of press. >https://www.facebook.com/elcielodecanarias.es/photos/a.224658390885198/4415… >de KM1P I don't do facebook, or twitter or care to. A satellite qso is much more fun, and educational.

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Radio Information, Please
by Gerald Payton 24 Jul '20

24 Jul '20

I just renewed membership and request information about compatibility on my radio ( IC-2730A ) for working the FM birds. I was hoping to use my IC-2730A along with HRD but cannot find a CAT cable for compatibility. HRD lists the 2730 as an available radio but no joy connecting. I am hoping to connect with someone that IS or HAS used this radio with or without HRD for help. If this is NOT a viable radio, please notify me! Jerry AB5R

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Upcoming ARISS Contact Schedule as of 2020-07-24 20:00 UTC
by aj9n＠aol.com 24 Jul '20

24 Jul '20

Upcoming ARISS Contact Schedule as of 2020-07-24 20:00 UTC Quick list of scheduled contacts and events: American School of Rio de Janeiro, Rio de Janeiro, Brazil, Multi-point telebridge via ON4ISS The ISS callsign is presently scheduled to be OR4ISS The scheduled astronaut is Chris Cassidy KF5KDR Contact is go for: Thu 2020-07-30 16:41:42 UTC 78 deg Watch for live simulcast starting about 10 minutes before AOS at: https://youtu.be/MSyfzEHYwrE (***) ######################################################################################################################################## A multi-point telebridge contact means that each student will be on the telebridge from their own home. ************************************************* ARISS is very aware of the impact that COVID-19 is having on schools and the public in general. As such, we may have last minute cancellations or postponements of school contacts. As always, I will try to provide everyone with near-real-time updates. The following schools have now been postponed or cancelled due to COVID-19: Postponed: No new schools Cancelled: No new schools The ARISS webpage is at https://www.ariss.org/ Watch for future COVID-19 related announcements here also. Note that there are links to other ARISS websites from this site. The main page for Applying to Host a Scheduled Contact may be found at https://www.ariss.org/apply-to-host-an-ariss-contact.html ARISS Contact Applications (United States) Note, all times are approximate. It is recommended that you do your own orbital prediction or start listening about 10 minutes before the listed time. All dates and times listed follow International Standard ISO 8601 date and time format YYYY-MM-DD HH:MM:SS The complete schedule page has been updated as of 2020-07-24 20:00 UTC. (***) Here you will find a listing of all scheduled school contacts, and questions, other ISS related websites, IRLP and Echolink websites, and instructions for any contact that may be streamed live. https://www.amsat.org/amsat/ariss/news/arissnews.rtf https://www.amsat.org/amsat/ariss/news/arissnews.txt The successful school list has been updated as of 2020-07-20 16:30 UTC. https://www.amsat.org/amsat/ariss/news/Successful_ARISS_schools.rtf The ARISS webpage is at https://www.ariss.org/ Note that there are links to other ARISS websites from this site. The main page for Applying to Host a Scheduled Contact may be found at https://www.ariss.org/apply-to-host-an-ariss-contact.html ARISS Contact Applications (United States) The ARISS webpage is at https://www.ariss.org/ Note that there are links to other ARISS websites from this site. Message to US Educators ARISS Contact Applications (United States) The Proposal Window of February 1, 2020 to March 31, 2020 has now closed. For future proposal information and more details such as expectations, proposal guidelines and proposal form, and dates and times of Information Webinars, go to www.ariss.org. Please direct any questions to ariss.us.education(a)gmail.com. About ARISS: Amateur Radio on the International Space Station (ARISS) is a cooperative venture of international amateur radio societies and the space agencies that support the International Space Station (ISS). In the United States, sponsors are the Radio Amateur Satellite Corporation (AMSAT), the American Radio Relay League (ARRL), the ISS National Lab and National Aeronautics and Space Administration (NASA). The primary goal of ARISS is to promote exploration of science, technology, engineering, and mathematics (STEAM) topics by organizing scheduled contacts via amateur radio between crew members aboard the ISS and students in classrooms or public forms. Before and during these radio contacts, students, educators, parents, and communities learn about space, space technologies, and amateur radio. For more information, see www.ariss.org. ******************************************************************************** ARISS Contact Applications (Europe, Africa and the Middle East) Schools and Youth organizations in Europe, Africa and the Middle East interested in setting up an ARISS radio contact with an astronaut on board the International Space Station are invited to submit an application from September to October and from February to April. Please refer to details and the application form at www.ariss-eu.org/school-contacts. Applications should be addressed by email to: school.selection.manager(a)ariss-eu.org ARISS Contact Applications (Canada, Central and South America, Asia and Australia and Russia) Organizations outside the United States can apply for an ARISS contact by filling out an application. Please direct questions to the appropriate regional representative listed below. If your country is not specifically listed, send your questions to the nearest ARISS Region listed. If you are unsure which address to use, please send your question to the ARISS-Canada representative; they will forward your question to the appropriate coordinator. For the application, go to: https://www.ariss.org/ariss-application.html. ARISS-Canada and the Americas, except USA: Steve McFarlane, VE3TBD email to: ve3tbd(a)gmail.com ARISS-Japan, Asia, Pacific and Australia: Satoshi Yasuda, 7M3TJZ email to: ariss(a)iaru-r3.org, Japan Amateur Radio League (JARL) https://www.jarl.org/ ARISS-Russia: Soyuz Radioljubitelei Rossii (SRR) https://srr.ru/ ****************************************************************************** ARISS is always glad to receive listener reports for the above contacts. ARISS thanks everyone in advance for their assistance. Feel free to send your reports to aj9n(a)amsat.org or aj9n(a)aol.com. Listen for the ISS on the downlink of 145.8Ø MHz. ******************************************************************************* All ARISS contacts are made via the Kenwood radio unless otherwise noted. ******************************************************************************* Several of you have sent me emails asking about the RAC ARISS website and not being able to get in. That has now been changed to https://www.ariss.org/ Note that there are links to other ARISS websites from this site. **************************************************************************** Looking for something new to do? How about receiving DATV from the ISS? Please note that the HamTV system has been brought back to earth for troubleshooting. Please monitor ARISS-EU or ARISS-ON for the very latest news on the troubleshooting efforts. If interested, then please go to the ARISS-EU website for complete details. Look for the buttons indicating Ham Video. http://www.ariss-eu.org/ If you need some assistance, ARISS mentor Kerry N6IZW, might be able to provide some insight. Contact Kerry at kbanke(a)sbcglobal.net The HamTV webpage: https://www.amsat-on.be/hamtv-summary/ **************************************************************************** ARISS congratulations the following mentors who have now mentored over 100 schools: Francesco IKØWGF with 140 Satoshi 7M3TJZ with 138 Sergey RV3DR with 134 Gaston ON4WF with 123 **************************************************************************** The webpages listed below were all reviewed for accuracy. Out of date webpages were removed, and new ones have been added. If there are additional ARISS websites I need to know about, please let me know. Total number of ARISS ISS to earth school events is 1392. Each school counts as 1 event. Total number of ARISS ISS to earth school contacts is 1325. Each contact may have multiple schools sharing the same time slot. Total number of ARISS supported terrestrial contacts is 48. A complete year by year breakdown of the contacts may be found in the file. https://www.amsat.org/amsat/ariss/news/arissnews.rtf Please feel free to contact me if more detailed statistics are needed. ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ The following US states and entities have never had an ARISS contact: South Dakota, Wyoming, American Samoa, Guam, Northern Marianas Islands, and the Virgin Islands. ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ QSL information may be found at: https://www.ariss.org/qsl-cards.html ISS callsigns: DPØISS, IRØISS, NA1SS, OR4ISS, RSØISS **************************************************************************** Frequency chart for packet, voice, and crossband repeater modes showing Doppler correction as of 2005-07-29 04:00 UTC https://www.amsat.org/amsat/ariss/news/ISS_frequencies_and_Doppler_correcti… Check out the Zoho reports of the ARISS contacts https://reports.zoho.com/ZDBDataSheetView.cc?DBID=412218000000020415 **************************************************************************** Exp. 62 now on orbit Chris Cassidy KF5KDR Anatoli Ivanishin Ivan Vagner SpaceX-Demo2 now on orbit Bob Behnken KE5GGX Doug Hurley **************************************************************************** 73, Charlie Sufana AJ9N One of the ARISS operation team mentors

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ORI Transponder Design Review 30 July 2020
by Michelle Thompson 24 Jul '20

24 Jul '20

Greetings all! A design review workshop has been scheduled for 7am Pacific 30 July 2020 for the 6U digital multiplexing transponder from Open Research Institute. This work is made available for free to the general public and assumes AMSAT as the primary audience and beneficiary. The design is the same as one in progress for AREx (AMSAT/ARISS USA). The design review will be of direct benefit to AREx and meets their requirements. The design is under consideration for other missions. If you would like to participate in the design review workshop, then please write me at w5nyv(a)arrl.net for a Zoom invite. The communications functions and circuits are the focus of this review. System architecture document can be found here: https://github.com/phase4space/payload-dmt/tree/master/doc/system-architect… (Brief) Statement of Work for Phase 1 can be found here: https://openresearch.institute/wp-content/uploads/sites/10/2020/02/Summary-… Thank you! -Michelle W5NYV (One of your AMSAT Directors)

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LEO sats
by Joseph Trombino, Jr 23 Jul '20

23 Jul '20

Howdy Gang. Getting my sat station set up again after many years. I’m familiar with AO7 and FO29 but not any of the newer LEO sats. What are the newer LEO’s, with linear transponders for SSB/CW only, that I should take a look at? Many thanks for any info. 73, Joe W2KJ

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LEO Sats
by Joseph Trombino, Jr 23 Jul '20

23 Jul '20

Many thanks to all of those folks who took the time to provide LEO sat info to me. Hope to be on the birds soon. Again, many thanks. 73, Joe W2KJ

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Brand new to satellite
by Doug Daniels 23 Jul '20

23 Jul '20

Hello all, I am brand new to satellite, and actually made my first QSO this morning on AO-91. I found this email group in the AMSAT Getting Started With Amateur Satellites 2020 which I purchased on a recommendation. Is this the informational email group? (I also signed up for the New England mailing list, but it looks like there hasn't been any activity since 2013) I am of course looking for all the information I can find, but this group seems to be more of a political discussion. Please point me in the right direction. Thanks! -- --... ...-- Doug K1RDD

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Is This AMSAT's Future?
by Stephen DeVience 23 Jul '20

23 Jul '20

It's interesting that there are amateur satellite allocations in the 2.4 GHz and 5 GHz ranges as well. A number of groups are doing ham internet on those frequencies using modified routers. This might be an option for some kind of digital satellite, although dealing with doppler could be a problem. I can envision an amateur version of Starlink. -Stephen, N8URE

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Orbit visualization & antenna performance
by Zach Metzinger 23 Jul '20

23 Jul '20

Hello all, In order to evaluate antenna effectiveness in the 70cm downlink band, I'm trying to visualize the orbits of the following satellites: AO-27 SO-50 RS-44 I can find the perigee/apogee and output power on these, and, so far, I have: AO-27 788x801 km 1W/0.5W/0.1W SO-50 603x713 km 0.25W RS-44 1175x1511 km 5W On the FM birds: My observed data shows that SO-50 is difficult to hear while AO-27 is booming, so I hypothesize that AO-27 is transmitting with 0.5W or 1W. RS-44's beacon seems to be fairly weak, while CW/SSB signals on the transponder are quite strong. Does anyone know where I might find more details on RS-44's construction such as antennas and power output for the beacon? Thanks, --- Zach N0ZGO EM12jw

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