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Re: Newer Starlink satellites are very "bright" at RF vexing radio astronomers
by Bernd Peters 20 Sep '24

20 Sep '24

Those satellites are built by a for-profit organization. They want to make money by providing internet services, they don't care about science or scientific research. 73, Bernd - KB7AK On Thu, Sep 19, 2024 at 8:58 PM Jon via AMSAT-BB <amsat-bb(a)amsat.org> wrote: > Then that is potentially rectifiable. > Hope future satellites will be better off so that Radio Astronomy does not > suffer. > > 73 > > VU2JO > > On Fri, Sep 20, 2024 at 8:17 AM Wdwhalen via AMSAT-BB <amsat-bb(a)amsat.org> > wrote: > >> Just some ideas based on time in the industry building satellites would >> be poor quality enclosures on the satellite, lack of filter pins on >> external cables, general poor workmanship or tolerances on electrical unit >> boxes meant to create faraday cages. >> >> Poorly manufactured or designed power supplies. Emissions from the phased >> arrays themselves that may have poor grounding or lack conformal coatings >> due to cost reductions. >> >> Lots of options to cause it. Bummer for the radio astronomers - that will >> be tough to work around for the foreseeable future. >> >> Bill - KI6IRZ >> >> On Sep 19, 2024, at 6:59 PM, Doug Person via AMSAT-BB <amsat-bb(a)amsat.org> >> wrote: >> >> >> >> Sounds really bad. >> >> Doug -- K0DXV >> On 9/19/2024 6:15 PM, Jon via AMSAT-BB wrote: >> >> Any idea how such broadband emissions come from a satellite? >> >> 73 >> >> Jon, VU2JO >> >> On Fri, Sep 20, 2024 at 1:49 AM Joe Fitzgerald via AMSAT-BB < >> amsat-bb(a)amsat.org> wrote: >> >>> While newer Starlink spacecraft have been modified to be less bright at >>> visible wavelengths, the new generation is very bright in the RF >>> wavelengths. See this article just published: >>> >>> >>> >>> https://www.aanda.org/articles/aa/full_html/2024/09/aa51856-24/aa51856-24.h… >>> >>> >>> de KM1P >>> >>> >>> >>> ----------------------------------------------------------- >>> >>> Sent via AMSAT-BB(a)amsat.org. AMSAT-NA makes this open forum available >>> to all interested persons worldwide without requiring membership. >>> Opinions expressed >>> are solely those of the author, and do not reflect the official views of >>> AMSAT-NA. >>> Acceptable Use and Privacy Policies available at >>> https://www.amsat.org/about-amsat/ >>> >>> View archives of this mailing list at >>> https://mailman.amsat.org/hyperkitty/list/[email protected] >>> To unsubscribe send an email to amsat-bb-leave(a)amsat.org >>> Manage all of your AMSAT-NA mailing list preferences at >>> https://mailman.amsat.org >> >> >> ----------------------------------------------------------- >> >> Sent via AMSAT-BB(a)amsat.org. AMSAT-NA makes this open forum available >> to all interested persons worldwide without requiring membership. Opinions expressed >> are solely those of the author, and do not reflect the official views of AMSAT-NA. >> Acceptable Use and Privacy Policies available at https://www.amsat.org/about-amsat/ >> >> View archives of this mailing list athttps://mailman.amsat.org/hyperkitty/list/[email protected] >> To unsubscribe send an email to amsat-bb-leave(a)amsat.org >> Manage all of your AMSAT-NA mailing list preferences at https://mailman.amsat.org >> >> >> ----------------------------------------------------------- >> >> Sent via AMSAT-BB(a)amsat.org. AMSAT-NA makes this open forum available >> to all interested persons worldwide without requiring membership. >> Opinions expressed >> are solely those of the author, and do not reflect the official views of >> AMSAT-NA. >> Acceptable Use and Privacy Policies available at >> https://www.amsat.org/about-amsat/ >> >> View archives of this mailing list at >> https://mailman.amsat.org/hyperkitty/list/[email protected] >> To unsubscribe send an email to amsat-bb-leave(a)amsat.org >> Manage all of your AMSAT-NA mailing list preferences at >> https://mailman.amsat.org >> >> >> ----------------------------------------------------------- >> >> Sent via AMSAT-BB(a)amsat.org. AMSAT-NA makes this open forum available >> to all interested persons worldwide without requiring membership. >> Opinions expressed >> are solely those of the author, and do not reflect the official views of >> AMSAT-NA. >> Acceptable Use and Privacy Policies available at >> https://www.amsat.org/about-amsat/ >> >> View archives of this mailing list at >> https://mailman.amsat.org/hyperkitty/list/[email protected] >> To unsubscribe send an email to amsat-bb-leave(a)amsat.org >> Manage all of your AMSAT-NA mailing list preferences at >> https://mailman.amsat.org > > > ----------------------------------------------------------- > > Sent via AMSAT-BB(a)amsat.org. AMSAT-NA makes this open forum available > to all interested persons worldwide without requiring membership. Opinions > expressed > are solely those of the author, and do not reflect the official views of > AMSAT-NA. > Acceptable Use and Privacy Policies available at > https://www.amsat.org/about-amsat/ > > View archives of this mailing list at > https://mailman.amsat.org/hyperkitty/list/[email protected] > To unsubscribe send an email to amsat-bb-leave(a)amsat.org > Manage all of your AMSAT-NA mailing list preferences at > https://mailman.amsat.org

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Re: Newer Starlink satellites are very "bright" at RF vexing radio astronomers
by Jon 20 Sep '24

20 Sep '24

Then that is potentially rectifiable. Hope future satellites will be better off so that Radio Astronomy does not suffer. 73 VU2JO On Fri, Sep 20, 2024 at 8:17 AM Wdwhalen via AMSAT-BB <amsat-bb(a)amsat.org> wrote: > Just some ideas based on time in the industry building satellites would be > poor quality enclosures on the satellite, lack of filter pins on external > cables, general poor workmanship or tolerances on electrical unit boxes > meant to create faraday cages. > > Poorly manufactured or designed power supplies. Emissions from the phased > arrays themselves that may have poor grounding or lack conformal coatings > due to cost reductions. > > Lots of options to cause it. Bummer for the radio astronomers - that will > be tough to work around for the foreseeable future. > > Bill - KI6IRZ > > On Sep 19, 2024, at 6:59 PM, Doug Person via AMSAT-BB <amsat-bb(a)amsat.org> > wrote: > > > > Sounds really bad. > > Doug -- K0DXV > On 9/19/2024 6:15 PM, Jon via AMSAT-BB wrote: > > Any idea how such broadband emissions come from a satellite? > > 73 > > Jon, VU2JO > > On Fri, Sep 20, 2024 at 1:49 AM Joe Fitzgerald via AMSAT-BB < > amsat-bb(a)amsat.org> wrote: > >> While newer Starlink spacecraft have been modified to be less bright at >> visible wavelengths, the new generation is very bright in the RF >> wavelengths. See this article just published: >> >> >> >> https://www.aanda.org/articles/aa/full_html/2024/09/aa51856-24/aa51856-24.h… >> >> >> de KM1P >> >> >> >> ----------------------------------------------------------- >> >> Sent via AMSAT-BB(a)amsat.org. AMSAT-NA makes this open forum available >> to all interested persons worldwide without requiring membership. >> Opinions expressed >> are solely those of the author, and do not reflect the official views of >> AMSAT-NA. >> Acceptable Use and Privacy Policies available at >> https://www.amsat.org/about-amsat/ >> >> View archives of this mailing list at >> https://mailman.amsat.org/hyperkitty/list/[email protected] >> To unsubscribe send an email to amsat-bb-leave(a)amsat.org >> Manage all of your AMSAT-NA mailing list preferences at >> https://mailman.amsat.org > > > ----------------------------------------------------------- > > Sent via AMSAT-BB(a)amsat.org. AMSAT-NA makes this open forum available > to all interested persons worldwide without requiring membership. Opinions expressed > are solely those of the author, and do not reflect the official views of AMSAT-NA. > Acceptable Use and Privacy Policies available at https://www.amsat.org/about-amsat/ > > View archives of this mailing list athttps://mailman.amsat.org/hyperkitty/list/[email protected] > To unsubscribe send an email to amsat-bb-leave(a)amsat.org > Manage all of your AMSAT-NA mailing list preferences at https://mailman.amsat.org > > > ----------------------------------------------------------- > > Sent via AMSAT-BB(a)amsat.org. AMSAT-NA makes this open forum available > to all interested persons worldwide without requiring membership. Opinions > expressed > are solely those of the author, and do not reflect the official views of > AMSAT-NA. > Acceptable Use and Privacy Policies available at > https://www.amsat.org/about-amsat/ > > View archives of this mailing list at > https://mailman.amsat.org/hyperkitty/list/[email protected] > To unsubscribe send an email to amsat-bb-leave(a)amsat.org > Manage all of your AMSAT-NA mailing list preferences at > https://mailman.amsat.org > > > ----------------------------------------------------------- > > Sent via AMSAT-BB(a)amsat.org. AMSAT-NA makes this open forum available > to all interested persons worldwide without requiring membership. Opinions > expressed > are solely those of the author, and do not reflect the official views of > AMSAT-NA. > Acceptable Use and Privacy Policies available at > https://www.amsat.org/about-amsat/ > > View archives of this mailing list at > https://mailman.amsat.org/hyperkitty/list/[email protected] > To unsubscribe send an email to amsat-bb-leave(a)amsat.org > Manage all of your AMSAT-NA mailing list preferences at > https://mailman.amsat.org

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Re: Newer Starlink satellites are very "bright" at RF vexing radio astronomers
by Wdwhalen 20 Sep '24

20 Sep '24

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Upcoming ARISS Contact Schedule as of 2024-09-20 03:00 UTC
by aj9n＠aol.com 20 Sep '24

20 Sep '24

Upcoming ARISS Contact Schedule as of 2024-09-20 03:00 UTC Quick list of scheduled contacts and events: Kordylewski Youth Astronomical Observatory in Niepołomice, Niepołomice, Poland, direct via SP9MOA The ISS callsign is presently scheduled to be OR4ISS The downlink frequency is presently scheduled to be 145.800 MHz The latest information on the operation mode can be found at https://www.ariss.org/current-status-of-iss-stations.html The scheduled crewmember is Matthew Dominick KCØTOR The ARISS mentor is SP3QFE Contact was successful: Thu 2024-09-19 16:18:02 UTC 53 deg (***) Congratulations to the Kordylewski Youth Astronomical Observatory students, Matthew, mentor SP3QFE, and ground station SP9MOA! (***) Watch for Livestream at: PART I (Kick-off meeting + lectures + awarding of prizes and diplomas to participants) begins at 13:00 UTC: https://youtube.com/live/umIEOHO9b3w 14:30 UTC- Technical break PART II (16:00 UTC - ARISS contact from SP9MOA with International Space Station) starts at 16:00 UTC: https://youtube.com/live/sViYsHwUNPo 16:45 UTC - Technical break PART III (Press Conference) begins at 17:00 UTC: https://youtube.com/live/IliRbkZM1tk | | Sailing Event, Moscow, Russia, direct via TBD The ISS callsign is presently scheduled to be RSØISS The downlink frequency is presently scheduled to be 145.800 MHz The latest information on the operation mode can be found at https://www.ariss.org/current-status-of-iss-stations.html The scheduled crewmember is Aleksandr Grebyonkin RZ3DSE The ARISS mentor is RV3DR Contact is go for: Sat 2024-09-21 16:25 UTC Amur State University, Blagoveshchensk, Russia, direct via TBD The ISS callsign is presently scheduled to be RSØISS The downlink frequency is presently scheduled to be 145.800 MHz The latest information on the operation mode can be found at https://www.ariss.org/current-status-of-iss-stations.html The scheduled crewmember is Ivan Vagner The ARISS mentor is RV3DR Contact is go for Tue 2024-09-24 09:25 UTC Tatarstan, Russia, direct via TBD The ISS callsign is presently scheduled to be RSØISS The downlink frequency is presently scheduled to be 145.800 MHz The latest information on the operation mode can be found at https://www.ariss.org/current-status-of-iss-stations.html The scheduled crewmember is Aleksey Ovchinin The ARISS mentor is RV3DR Contact is go for Fri 2024-09-27 13:20 UTC Khazar University, Dunya School, Baku, Azerbaijan, direct via 4K6EH The ISS callsign is presently scheduled to be OR4ISS The downlink frequency is presently scheduled to be 145.800 MHz The latest information on the operation mode can be found at https://www.ariss.org/current-status-of-iss-stations.html The scheduled crewmember is Sunita Williams KD5PLB (***) The ARISS mentor is IN3GHZ Contact is go for: Sat 2024-09-28 09:13:29 UTC 38 deg (***) The crossband repeater continues to be active. If any crewmember is so inclined, all they have to do is pick up the microphone, raise the volume up, and talk on the crossband repeater. So give a listen, you just never know. 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 2024-09-20 03:00 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 2024-09-20 03:00 UTC. (***) https://www.amsat.org/amsat/ariss/news/Successful_ARISS_schools.rtf ####################################################################################################################################### Comments on making general contacts I have been seeing a lot of traffic on Facebook and I suspect on other social media sites with people asking why they are not hearing the crew make general contacts. First off the crew is very busy on the ISS and they simply may not have the time to just pick up the microphone and talk. Also, one needs to be aware of their normal daily schedule. I have listed below the constraints that we at ARISS have to follow in order to schedule the school contacts. Hopefully this will help you better schedule your opportunities. Typical daily schedule Wakeup to Workday start= 1.5 hours Workday start to Workday end=12 hours Workday end to Sleep= 2 hours Sleep to wakeup= 8.5 hours The crew's usual waking period is 07:30 – 19:30 UTC. The most common times to find a crew member making casual periods are about one hour after waking up and about an hour before sleeping, when they have personal time. They're usually free most of the weekend, as well. SSTV events are not that often. So please check out https://www.ariss.org/ for the latest information or watch for the ARISS announcements. And don’t forget that the packet system is sometimes active. Check the status at https://www.ariss.org/ or http://www.issfanclub.eu to see if the packet system is active or not. As always, if there is an EVA, a docking, or an undocking; the ARISS radios are turned off as part of the safety protocol. The latest information on the operation mode can be found at https://www.ariss.org/current-status-of-iss-stations.html The latest list of frequencies in use can be found at https://www.ariss.org/contact-the-iss.html ######################################################################################################################################## 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. Watch for future COVID-19 related announcements at https://www.ariss.org/ 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/ 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) Call for Proposals The next proposal window for US schools and educational organizations to host an Amateur Radio contact with a crew member on board the ISS opens July 8, 2024 for contacts to be scheduled for January 1, 2025 – June 30, 2025. This proposal window is due to ARISS by September 6, 2024 at 11:59 PM Pacific Time (Sept. 7, 2024, 06:59 UTC). (***) Proposal information and more details such as expectations, proposal guidelines and the proposal form can be found at www.ariss.org. An ARISS Introductory Webinar session will be held on July 22, 2024, at 7 PM ET (23:00 UTC). The Zoom link to sign up is: https://us06web.zoom.us/meeting/register/tZErf-ihrDktG9OphYxAjfz7nbONV0YcwY… Find more information and proposal instructions, visit the ARISS-USA website at: https://ariss-usa.org/hosting-an-ariss-contact-in-the-usa/ Please direct any questions to ariss.us.education(a)gmail.com. 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. 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 unless otherwise noted. ******************************************************************************* 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 is back on board but awaiting re-installation. 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 congratulates the following mentors who have now mentored over 100 schools: Sergey RV3DR with 242 Francesco IKØWGF with 154 Satoshi 7M3TJZ with 153 Gaston ON4WF with 124 Steve VE3TBD with 121 Peter IN3GHZ with 120 **************************************************************************** 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 1765. (***) Each school counts as 1 event. Total number of ARISS ISS to earth school contacts is 1656. (***) Each contact may have multiple schools sharing the same time slot. Total number of ARISS supported terrestrial contacts is 48. 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, 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, FXØISS, GB1SS, 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. 70 on orbit Oleg Kononenko Nikolay Chub Exp. 71 on orbit Tracy E. Caldwell Dyson SpaceX Crew-8 on orbit Matthew Dominick KCØTOR Mike Barratt KD5MIJ Jeanette Epps KF5QNU Aleksandr Grebyonkin RZ3DSE Boeing CFT on orbit Sunita Williams KD5PLB Barry Wilmore **************************************************************************** 73, Charlie Sufana AJ9N One of the ARISS operation team mentors

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Re: Newer Starlink satellites are very "bright" at RF vexing radio astronomers
by Doug Person 20 Sep '24

20 Sep '24

Sounds really bad. Doug -- K0DXV On 9/19/2024 6:15 PM, Jon via AMSAT-BB wrote: > Any idea how such broadband emissions come from a satellite? > > 73 > > Jon, VU2JO > > On Fri, Sep 20, 2024 at 1:49 AM Joe Fitzgerald via AMSAT-BB > <amsat-bb(a)amsat.org> wrote: > > While newer Starlink spacecraft have been modified to be less > bright at > visible wavelengths, the new generation is very bright in the RF > wavelengths. See this article just published: > > > https://www.aanda.org/articles/aa/full_html/2024/09/aa51856-24/aa51856-24.h… > > > de KM1P > > > > ----------------------------------------------------------- > > Sent via AMSAT-BB(a)amsat.org <http://amsat.org>. AMSAT-NA makes > this open forum available > to all interested persons worldwide without requiring membership. > Opinions expressed > are solely those of the author, and do not reflect the official > views of AMSAT-NA. > Acceptable Use and Privacy Policies available at > https://www.amsat.org/about-amsat/ > > View archives of this mailing list at > https://mailman.amsat.org/hyperkitty/list/[email protected] > To unsubscribe send an email to amsat-bb-leave(a)amsat.org > <http://amsat.org> > Manage all of your AMSAT-NA mailing list preferences at > https://mailman.amsat.org > > > ----------------------------------------------------------- > > Sent via AMSAT-BB(a)amsat.org. AMSAT-NA makes this open forum available > to all interested persons worldwide without requiring membership. Opinions expressed > are solely those of the author, and do not reflect the official views of AMSAT-NA. > Acceptable Use and Privacy Policies available athttps://www.amsat.org/about-amsat/ > > View archives of this mailing list at > https://mailman.amsat.org/hyperkitty/list/[email protected] > To unsubscribe send an email to amsat-bb-leave(a)amsat.org > Manage all of your AMSAT-NA mailing list preferences athttps://mailman.amsat.org

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Re: Newer Starlink satellites are very "bright" at RF vexing radio astronomers
by Jon 20 Sep '24

20 Sep '24

Any idea how such broadband emissions come from a satellite? 73 Jon, VU2JO On Fri, Sep 20, 2024 at 1:49 AM Joe Fitzgerald via AMSAT-BB < amsat-bb(a)amsat.org> wrote: > While newer Starlink spacecraft have been modified to be less bright at > visible wavelengths, the new generation is very bright in the RF > wavelengths. See this article just published: > > > > https://www.aanda.org/articles/aa/full_html/2024/09/aa51856-24/aa51856-24.h… > > > de KM1P > > > > ----------------------------------------------------------- > > Sent via AMSAT-BB(a)amsat.org. AMSAT-NA makes this open forum available > to all interested persons worldwide without requiring membership. Opinions > expressed > are solely those of the author, and do not reflect the official views of > AMSAT-NA. > Acceptable Use and Privacy Policies available at > https://www.amsat.org/about-amsat/ > > View archives of this mailing list at > https://mailman.amsat.org/hyperkitty/list/[email protected] > To unsubscribe send an email to amsat-bb-leave(a)amsat.org > Manage all of your AMSAT-NA mailing list preferences at > https://mailman.amsat.org

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Newer Starlink satellites are very "bright" at RF vexing radio astronomers
by Joe Fitzgerald 19 Sep '24

19 Sep '24

While newer Starlink spacecraft have been modified to be less bright at visible wavelengths, the new generation is very bright in the RF wavelengths. See this article just published: https://www.aanda.org/articles/aa/full_html/2024/09/aa51856-24/aa51856-24.h… de KM1P

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EN65
by Thomas Schuessler 19 Sep '24

19 Sep '24

Hello all. My wife and I are currently traveling in northern Wisconsin and I am in EN65 Marinette Wisconsin. I don’t know of too many opportunities that I will have during the day here to work FM satellites however, I am going to try to work and SO-50 and ISS cross band repeater set of passes around 0300 UTC on the 20th. While I won’t be on a Gridline border. I will actually be on the border of Wisconsin and Michigan as my site will be on the middle of The bridge crossing the river between the two states. Hope to catch you on the pass. Sent from my iPad

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MESAT1 is in HEALTH mode 1143utc 19 Sept 2024
by Mark L. Hammond 19 Sep '24

19 Sep '24

Hi all, MESAT1 is in HEALTH mode, transmitting telemetry continuously, and the beacon setting is pretty strong as of 1143utc 19 Sept 2024. Good time to test or tweak your receiving systems on 70cm! Thanks for the telemetry collection and reporting. 73! Mark L. Hammond [N8MH] AMSAT Director and Command Station

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FUNcube Data Warehouse Up Again
by g4dpz 18 Sep '24

18 Sep '24

Hi, The FUNcube team are pleased to announce that User Rankings, Realtime Data and WOD are all now being displayed in the warehouse. Fitter message display will follow soon as will be the ability to download WOD files. Many thanks for your patience and in particular to those that have been uploading the data during the period. warehouse.funcube.org.uk data.funcube.org.uk data.amsat-uk.org will all work. 73 Dave, G4DPZ On behalf of the FUNcube Team

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