ANS

In this edition:

* AMSAT at Hamvention
* Save the Date! Symposium 2024
* Multiple QO-100 DX-Peditions to VO1
* Lost and Found: Missing Satellite Rediscovered
* Starliner: A Decade of Challenges
* 2024 AMSAT Board of Directors Election
* Changes to AMSAT-NA TLE Distribution for May 16
* ARISS News
* Upcoming Satellite Operations
* Hamfests, Conventions, Maker Faires, and Other Events
* Satellite Shorts From All Over

The AMSAT News Service bulletins are a free, weekly news and information service of AMSAT, the Radio Amateur Satellite Corporation. ANS publishes news related to Amateur Radio in Space including reports on the activities of a worldwide group of Amateur Radio operators who share an active interest in designing, building, launching and communicating through analog and digital Amateur Radio satellites.

The news feed on http://www.amsat.org publishes news of Amateur Radio in Space as soon as our volunteers can post it.

Please send any amateur satellite news or reports to: ans-editor [at] amsat.org

You can sign up for free e-mail delivery of the AMSAT News Service Bulletins via the ANS List; to join this list see: https://mailman.amsat.org/postorius/lists/ans.amsat.org/

ANS-140 AMSAT News Service Weekly Bulletins

To: All RADIO AMATEURS
From: Radio Amateur Satellite Corporation
712 H Street NE, Suite 1653
Washington, DC 20002

DATE 2024 May 19

AMSAT at Hamvention

This issue of the AMSAT News Service bulletins is being produced at the AMSAT booth at Hamvetion 2024 in Xenia, Ohio. AMSAT has a major presence at Hamvention, with booths devoted to teaching satellite basics, membership recruitment, the AMSAT Store, Engineering, Education, and the Ambassador program.

Traffic was heavy on Friday morning, May 17, as soon as Hamvention opened its doors. While some came directly to the AMSAT booth with their questions, or to make purchases at the Store, many other ham attendees were attracted by the displays as they wandered through the several Hamvention venues.

Volunteer members of the AMSAT Engineering team were on hand to show off models of the GOLF-Tee and Fox Plus satellites currently under construction. Engineering team members also discussed various projects that are part of the ASCENT program, developing possible components for future satellites.

At the Education booth, Cubesat SIM models were transmitting actual telemetry and slow-scan TV data across the table, demonstrating how these tools can be assembled and used in classrooms and other settings to provide hands-on instruction in satellite basics.

At the “Beginners Corner,” experienced satellite operators answered questions and helped the curious to understand how easy and exciting it is to get started in this fascinating aspect of the amateur radio hobby. Rain on Friday morning prevented live satellite demonstrations, but these took place as satellite passes and Hamvention circumstances permitted on Saturday and Sunday.

The sixteenth annual joint AMSAT/ TAPR Banquet was held on Friday evening at the Kohler Presidential Banquet Center in Kettering, Ohio, just south of Dayton. This year’s banquet speaker was Bill Reed, NX5R, AMSAT PACSAT Project Manager, who highlighted the forthcoming PACSAT digital communications payload. This payload is drawing on lessons learned from previous digital satellites to provide smoother operations for users in the future.

The AMSAT Forum was held on Saturday afternoon. Robert Bankston KE4AL, AMSAT President, highlighted recent activities within AMSAT and discussed some of our challenges, accomplishments, projects, and late breaking news (See following story). Jerry Buxton, NØJY, AMSAT Vice President for Engineering, provided a video status update about upcoming satellite missions currently in development. Alan Johnston, KU2Y, AMSAT Vice President Education Relations, spoke about opportunities for using the AMSAT CubeSat Simulator in educational settings. Drew Glasbrenner, KO4MA, Vice President Operations, briefed those attending on the status of current satellites. And Frank Karnauskas, N1UW, Vice President of AMSAT Development, reported on the AMSAT Youth Initiative and its features.

Attendance was steady at all AMSAT exhibits throughout the Hamvention weekend, and satellite operators enjoyed meeting, fact to face, the voices and callsigns encountered on the satellites.

[ANS thanks Mark Johns, KØJM,  ANS Senior Editor, for the above information]

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The 2024 AMSAT President’s Club coins are here now!
Help Support GOLF and Fox Plus

Join the AMSAT President’s Club today and help
Keep Amateur Radio in Space!
https://www.amsat.org/join-the-amsat-presidents-club/

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Save the Date! Symposium 2024

Mark your calendar now for the 2024 AMSAT Symposium, October 25-27, 2024 in Tampa, Florida!

AMSAT President Robert Bankston, KE4AL, announced this week at the Hamvention that the 2024 Symposium will be held October 25-27, 2024 at the Doubletree by Hilton Tampa Rocky Point Waterfront.

[ANS thanks AMSAT President Robert Bankston, KE4AL, for the above information]

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Multiple QO-100 DX-Peditions to VO1

This week sees three separate groups operating from just outside the coverage footprint of the QO-100 satellite.

From Newfoundland the geostationary QO-100 satellite is nominally 1 degree below the horizon. After 5 years in orbit and much speculation, three groups are in the St. John’s area to try operating QO-100 with its S band uplink and 10GHz downlink.

First in Newfoundland was Gopan, M0XUU. He was operating with a 0.8m dish from just north of the harbor entrance and updates could be found on the QO-100 DX Club web site. https://qo100dx.club/ Despite frequency periods of no signal or deep QSB, Gopan managed to work stations via FT8, FT4, and CW. After a week on the air as VO1/M0XUU, Gopan left Newfoundland on May 15.

Arriving Monday 13 May and remaining until to Friday 17, was a Canadian team with a 1.8m dish and up to 100W. Poor weather hampered their operations. Details of the operation by Stefan Wagener, VE4SW, and John Langille, VE1CWJ, can be found at the QRZ.com page for special callsign, VO100QO at https://www.qrz.com/db/VO100QO

Finally, Graham Shirville, G3VZV, and David Bowman, G0MRF, arrived on Wednesday, May 15 with two sets of equipment and were active as VO1/G3VZV and VO1/G0MRF. They will fly back to the UK early Sunday, May 19. Operating from the old lighthouse keepers bungalow on the southern side of the harbor entrance, GN37PN85, they attempted working all modes including an attempt with DATV with a 175W S band amplifier. When not actively on the bands, a personal beacon was operating on 10489.539 MHz in CW to act as a propagation indicator.

[ANS thanks David Bowman, G0MRF, for the above information]

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Need new satellite antennas?
Purchase M2 LEO-Packs from the AMSAT Store.

When you purchase through AMSAT, a portion of the proceeds goes towards
Keeping Amateur Radio in Space.
https://amsat.org/product-category/hardware/

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Lost and Found: Missing Satellite Rediscovered

After 25 years lost in the vastness of space, a missing satellite has finally been located, highlighting the challenges of tracking the multitude of objects orbiting Earth. The rediscovery sheds light on the difficulty of monitoring the approximately 27,000 objects that populate Earth’s orbit, a number that continues to grow with each rocket launch and satellite deployment.

The satellite in question, the Infra-Red Calibration Balloon (S73-7), was part of the United States Air Force’s Space Test Program and was launched in 1974. Its purpose was to serve as a calibration target for remote sensing equipment, but a deployment failure left it adrift as space debris. Despite initial attempts to track its whereabouts, it vanished from ground-based sensors in the 1990s, only to resurface last month.

The Air Force’s KH-9 Hexagon satellite deployed the tiny IRCB (S73-7) satellite in 1974. (Illustration: U.S. Air Force)

Jonathan McDowell, an astrophysicist from the Harvard-Smithsonian Center for Astrophysics, discovered the satellite’s reappearance while reviewing archival data. He explained that the satellite’s low radar cross section and possible malfunctioning equipment made it difficult to detect. This underscores the challenges faced by ground-based radar and optical sensors tasked with monitoring objects in orbit.

Tracking objects in space is akin to air traffic control, with sensors relying on identifying the orbit of moving objects and matching them with designated satellite orbits. However, this becomes increasingly complex as Earth’s orbit becomes more congested, particularly in geostationary orbit where monitoring is hindered by a lack of radars positioned precisely on the equator.

A screenshot of a screenshot of a graph Description automatically generated

The Department of Defense’s Space Surveillance Network currently tracks over 27,000 objects, predominantly defunct satellites and debris. As the number of satellites and rocket launches continues to rise, maintaining accurate tracking becomes crucial to mitigate the risk of collisions and space debris hazards.

While the rediscovery of the missing satellite serves as a reminder of the challenges of space tracking, it also underscores the importance of continued efforts to monitor and manage Earth’s orbital environment. With technology evolving and space activity increasing, effective space surveillance remains paramount to ensure the safety and sustainability of activities in Earth’s orbit.

[ANS thanks Passant Rabie, Gizmodo, for the above information]

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Starliner: A Decade of Challenges

Boeing is delaying its first flight with humans on its Starliner spacecraft yet again, the company said on May 14. The launch, which has been delayed for years and was most recently scheduled for May 18, was pushed back until Tuesday afternoon, May 21 at the earliest because of a helium leak.

Boeing’s Starliner spacecraft marks the culmination of a tumultuous journey fraught with setbacks and challenges. What’s surprising isn’t merely Boeing’s eventual loss in the commercial crew space race to SpaceX but rather the fact that Boeing managed to reach this point at all.

The story traces back a decade when NASA’s human spaceflight leaders convened to select a replacement vehicle for the retired Space Shuttle. Boeing emerged as the frontrunner, backed by its illustrious history in spaceflight. However, the eventual decision to award contracts to both Boeing and SpaceX marked the beginning of Boeing’s struggle to adapt to the demands of a fixed-price environment.

Boeing’s Starliner spacecraft is lifted to be placed atop an Atlas V rocket for its first crewed launch. [Credit: NASA/Cory Huston]

Unlike SpaceX, which was already immersed in multiple space projects, Boeing found itself grappling with a new paradigm. Accustomed to cost-plus contracts, where expenses could be billed to the government, Boeing now faced the challenge of delivering a spacecraft within strict budget constraints. This shift exposed deep cultural and structural inefficiencies within the company.

Boeing’s difficulties were compounded by technical hurdles, particularly in software development and propulsion. Fragmented software teams and strained relationships with suppliers like Aerojet Rocketdyne hindered progress. The consequences of these challenges became evident during Starliner’s ill-fated uncrewed test flight in 2019, marred by critical software errors and propulsion anomalies.

Boeing’s CST-100 Starliner ahead of the Orbital Flight Test-2 (OFT-2) mission in 2022 [Credit: NASA/Joel Kowsky]

While Boeing struggled, SpaceX surged ahead, buoyed by its vertically integrated approach and a culture of innovation. SpaceX’s success underscored the shortcomings of Boeing’s traditional aerospace model, further exacerbated by broader crises within Boeing’s aviation division, notably the 737 MAX disasters and the COVID-19 pandemic.

Boeing’s tumultuous journey with Starliner offers valuable lessons about the perils of resisting change and the imperative of embracing innovation in the rapidly evolving space industry. Despite its setbacks, Boeing’s perseverance underscores the dedication of the engineers and technicians who tirelessly worked to bring Starliner to fruition.

[ANS thanks Eric Berger, Ars Technica, for the above information]

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2024 AMSAT Board of Directors Election – Call for Nominations

AMSAT solicits nominations for the 2024 AMSAT Board of Directors election, to be held in the third quarter of the year. The seats of the following three incumbent Directors expire in 2024 and will be filled by this year’s election:

– Mark Hammond, N8MH
– Bruce Paige, KK5DO
– Paul Stoetzer, N8HM

Further, up to two Alternate Directors may be elected for one-year terms. A valid nomination for Director must be written and requires either one Member Society or five current individual members in good standing to nominate an AMSAT member. Written nominations, with the nominee’s name, call sign, and contact information, as well as the nominators’ names, call signs, and contact information, should be sent to the AMSAT Secretary:

Jeff Davis, KE9V
PO Box 11
Yorktown, IN 47396

AMSAT bylaws require that the nomination be written and in the form specified by the Secretary who has elected to accept written nomination materials via postal mail or in electronic form, including email or electronic image of a paper document. Fax transmissions cannot be accepted.

Email nominations may be sent to jdavis [at] amsat [dot] org.

No matter what means are used, petitions MUST be received by the Secretary no later than June 15th. The Secretary will verify the qualifications of candidates and nominating members or Member Societies as petitions are received and will notify candidates whether their nominations are in order by the end of June.

[ANS thanks Jeff Davis, KE9V, AMSAT Secretary for the above information.]

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Want to fly the colors on your own grid expedition?
Get your AMSAT car flag and other neat stuff from our Zazzle store!

25% of the purchase price of each product goes towards
Keeping Amateur Radio in Space
https://www.zazzle.com/amsat_gear

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Changes to AMSAT-NA TLE Distribution for May 16

Two Line Elements or TLEs, often referred to as Keplerian elements or keps in the amateur community, are the inputs to the SGP4 standard mathematical model of spacecraft orbits used by most amateur tracking programs. Weekly updates are completely adequate for most amateur satellites. TLE bulletin files are updated daily in the first hour of the UTC day. New bulletin files will be posted immediately after reliable elements become available for new amateur satellites. More information may be found at https://www.amsat.org/keplerian-elements-resources/.

The following satellite has been removed from this week’s AMSAT-NA TLE distribution:

CHOMPTT NORAD Cat ID 43855 Decayed from orbit on or about 13 May 2024

[ANS thanks Joe Fitzgerald, KM1P, AMSAT Orbital Elements page editor, for the above information]

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ARISS NEWS

Amateurs and others around the world may listen in on contacts between amateurs operating in schools and allowing students to interact with astronauts and cosmonauts aboard the International Space Station. The downlink frequency on which to listen is 145.800 MHz worldwide.

COMPLETED:
Eric Knows CIC, Newcastle upon Tyne, United Kingdom, telebridge via K6DUE
The scheduled crewmember was Matthew Dominick, KCØTOR. The ARISS mentor was MØXTD
Contact was scheduled for: Sat 2024-05-11 08:42:32 UTC 48 degrees elevation

UPCOMING:
Ulukulevo Secondary School, Ulukulevo, Bashkortostan, Russia, direct via TBD
The ISS callsign is presently scheduled to be RSØISS
The scheduled crewmember is Nikolay Chub. The ARISS mentor is RV3DR.
Contact is go for Wed 2024-05-22 15:05 UTC

Amur State Medical Academy, Blagoveshchensk, Russia, direct via TBD
The ISS callsign is presently scheduled to be RSØISS
The scheduled crewmember is Nikolay Chub. The ARISS mentor is RV3DR.
Contact is go for Thu 2024-05-23 10:25 UTC

Children’s Technopark “Quantorium”, Obninsk, Russia, direct via TBD
The ISS callsign is presently scheduled to be RSØISS
The scheduled crewmember is Aleksandr Grebyonkin, RZ3DSE. The ARISS mentor is RV3DR.
Proposed for Mon 2024-05-27 14:10 UTC

The crossband repeater continues to be ACTIVE (145.990 MHz up {PL 67} & 437.800 MHz down). 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.

The packet system is also ACTIVE (145.825 MHz up & down). Digital amateur television operations (2395.00 MHz down) is currently STOWED.

As always, if there is an EVA, a docking, or an undocking; the ARISS radios are turned off as part of the safety protocol. Upcoming:
+ Powering off for Progress undocking on May 28. OFF TBD. ON TBD.
+ Powering off for Progress docking on June 01. OFF TBD. ON TBD.

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.

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

[ANS thanks Charlie Sufana, AJ9N, one of the ARISS operation team mentors for the above information]

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Upcoming Satellite Operations

No rovers have reported operations as of this publication date. Please submit any rover operations to k5zm (at) comcast (dot) net.

A growing number of satellite rovers are currently engaged in sharing their grid square activations on https://hams.at. By visiting the website, you gain easy access to comprehensive information about the operators responsible for activating specific grid squares. Additionally, you have the ability to assess the match score between yourself and a particular rover for a given pass, while also being able to identify the upcoming satellite passes that are accessible from your location.

[ANS thanks Ian Parsons, K5ZM, AMSAT rover page manager, for the above information]

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Hamfests, Conventions, Maker Faires, and Other Events

AMSAT Ambassadors provide presentations, demonstrate communicating through amateur satellites, and host information tables at club meetings, hamfests, conventions, maker faires, and other events.

Hamvention 2024
Continues through 1:00 p.m. EDT, Sunday May 19, 2024
Greene County Fairgrounds and Expo Center
120 Fairground Road
Xenia, OH 45385
https://hamvention.org

[ANS thanks the AMSAT Events page for the above information]

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Satellite Shorts From All Over

+ Congratulations to Maksym “Max” Romenskyy, SA5IKN, M0SKN, US6IKN, EI6KC, who has earned his THIRD satellite Worked All Zones (WAZ) award, this time as EI6KC #121. This is the first WAZ Satellite Award in Ireland. He is also the first in the world to complete three WAZ Satellite Awards from three different locations in three countries. He already holds a special plague “IN RECOGNITION OF WORLD # 1 SAT WAZ AWARD WITH TWO CALLS” for WAZ awards #40 as SA5IKN (38 zones) and #92 as MØSKN. (ANS thanks Max Romenskyy, US6IKN, for the above information.)

+ Since April 28, 2019, the Swiss satellite net on QO-100 has been a consistent weekly event, marking its fifth anniversary on the same date in 2024. Hosted by HB9RYZ initially and later by HB9TSI from Italy, the round convenes every Sunday at 9:00 p.m. on 10489.740 MHz, typically with 5 to 10 participants, though 15 joined for the anniversary round. Led by Paul, HB9DFQ, the round maintains a familiar format: participants check in, share station updates and radio experiences, delve into topics, and bid farewell. Despite no specific celebration planned, the anniversary drew a hearty attendance. Notable moments include Roman, HB9HCF’s reports from Antarctica during the pandemic, while regular attendees like IS0/HB9SJP and supportive listeners add to the camaraderie. The inaugural round was preserved on Soundcloud by HB9WDF, encapsulating the enduring spirit of this community gathering. (ANS thanks AMSAT-HB for the above information for the above information)

+ The recently released GreenCube BackPack antenna by Arrow Antennas, designed specifically for IO-117 satellite communication, can now be purchased from their website for $219. It boasts a three-piece split boom design and 15 UHF elements, along with a pre-assembled and pre-tuned Gamma Match compatible only with BNC connectors. Engineered for maximum gain and efficiency, the antenna utilizes aluminum Arrow Shafts for its elements and a 3/4″ square boom measuring 116.8″ in length. Mounting near its balance point is recommended due to its weight, and plastic tips ensure safety. While the foam handle grip can be removed using isopropyl alcohol, using the tripod hole for mounting is discouraged due to balance issues. Additionally, customers have the option to purchase a separate element set for cross-polarized antenna configuration, priced at $99.00. Info at https://arrowantennas.com/arrowii/greencube.html (ANS thanks Arrow Antennas, for the above information.)

+ Prof. Robert “Bob” Twiggs, KE6QMD, and a group of former students and colleagues are working on gathering and publishing a series of books on the history of the creation and adoption of the CubeSat. Take a look at the LinkedIn announcement here: https://lnkd.in/eNZgv6Tk. If this sounds like something you’d be interested in supporting, please take a look at our GoFundMe page here: https://www.gofundme.com/f/cubesat-history-project. The community’s response has been amazing! Over a hundred interviews were conducted, and countless images and documents from the earliest days of the CubeSat were collected! The result is that we have accumulated one of the most comprehensive histories of the CubeSat, with many unique, never-before-told stories! Reach out if you are interested in sponsoring the project to get a signed copy and your organization’s name in the book. Please email Dr. Aaron Zucherman at [email protected]. (ANS thanks Aaron Zucherman, KM6CHY, for the above information.)

+ Last week, as Sol continues to edge into the most active phase of its 11-year cycle, multiple massive X-class solar flares (the largest an X5.8 flare) erupted from associated active sunspots, along with coronal mass ejections (CMEs) directed towards Earth. This sustained activity caused a G5 solar storm last weekend (NOAA’s space weather scales for reference), leading to aurorae visible from middle latitudes as far south as Puerto Rico in the US and all over Europe. This was one of the most powerful solar storms since an estimated X28-45 flare in 2003 contributed to the 2003 Halloween solar storms that damaged or interrupted services from multiple spacecraft, saturated measurement instruments, and made ISS astronauts shelter in the more shielded Russian segment. (ANS thanks The Orbital Index for the above information.)

+ Japan’s Moon Sniper, also known as SLIM, has astounded experts by surviving its third lunar night, despite not being designed for such harsh conditions. Initially landing near the Shioli Crater on January 19, the spacecraft encountered an anomaly during descent, landing on its nose and facing west, hindering its solar panels’ ability to generate power. However, Moon Sniper continues to defy expectations by waking up after each lunar night, transmitting new images before going back into hibernation. Despite enduring both the extreme cold of the lunar night and the searing temperatures of the lunar day, the spacecraft has maintained functionality, prompting close monitoring from the mission team to identify potential deteriorating components. As Moon Sniper enters hibernation again, the team plans to resume operations in May, expressing gratitude for ongoing support and even composing a song titled “15 Degree Slope” to commemorate the mission’s unexpected journey. (ANS thanks CNN for the above information.)

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Join AMSAT today at https://launch.amsat.org/

In addition to regular membership, AMSAT offers membership to:

* Societies (a recognized group, clubs or organization).
* Primary and secondary school students are eligible for membership at one-half the standard yearly rate.
* Post-secondary school students enrolled in at least half time status shall be eligible for the student rate for a maximum of 6 post-secondary years in this status.
* Memberships are available for annual and lifetime terms.

Contact info [at] amsat.org for additional membership information.

73 and remember to help Keep Amateur Radio in Space!

This week’s ANS Editor, Mark Johns, KØJM
k0jm [at] amsat.org

In this edition:

* Greencube Terminal Program: Version 1.0.0.90 Enhancements and Updates
* Chang’e-6 Successfully Launches: China’s Historic Lunar Mission Begins
* NASA Reveals SpaceX’s Innovative Plan for Starship Refueling in Orbit
* GridMasterMap Satellite Top 100 Rovers May 2024 Rankings
* Changes to AMSAT-NA TLE Distribution for May 3, 2024
* ARISS News
* Upcoming Satellite Operations
* Hamfests, Conventions, Maker Faires, and Other Events
* Satellite Shorts From All Over

The AMSAT News Service bulletins are a free, weekly news and information service of AMSAT, the Radio Amateur Satellite Corporation. ANS publishes news related to Amateur Radio in Space including reports on the activities of a worldwide group of Amateur Radio operators who share an active interest in designing, building, launching and communicating through analog and digital Amateur Radio satellites.

The news feed on https://www.amsat.org publishes news of Amateur Radio in Space as soon as our volunteers can post it.

Please send any amateur satellite news or reports to: ans-editor [at] amsat.org

You can sign up for free e-mail delivery of the AMSAT News Service Bulletins via the ANS List; to join this list see: https://mailman.amsat.org/postorius/lists/ans.amsat.org/

ANS-126 AMSAT News Service Weekly Bulletins

To: All RADIO AMATEURS
From: Radio Amateur Satellite Corporation
712 H Street NE, Suite 1653
Washington, DC 20002

DATE 2024 May 05

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Greencube Terminal Program: Version 1.0.0.90 Enhancements and Updates

The Greencube Terminal Program, developed by Carsten Groen, OZ9AAR, has taken another leap forward in its evolution with the launch of Version 1.0.0.90. This latest update brings a number of enhancements and fixes geared towards bolstering operational efficiency and enriching the user experience, particularly for IO-117 satellite enthusiasts.

One of the standout features of this update is the integration of UHM 2.1 (yoU Heard Me), supplanting the older UHM 2.0. It’s imperative for users to make the switch before May 14th, as UHM 2.0 will quit working thereafter. In the Live World View (LWV), users now have the flexibility to customize the positioning of the “radar view” of the current pass on the screen, allowing for more tailored satellite tracking experiences. Moreover, a bug that caused the frequency/band to default to 435.310 MHz regardless of the satellite selected when logging stations has been rectified.

Several user-requested enhancements have been incorporated, including the addition of time stamps (HH:MM:SS) when copying selected lines to the clipboard in the Traffic window and the removal of limitations on the length of callsigns (excluding SSID) in AX.25 mode so the full 6-character callsigns in AX.25 are supported. Additionally, users can now integrate their horizon into the “radar view” in LWV by defining horizon definitions in a text file.

Noteworthy improvements have also been made to message handling within the Terminal program. These include fixes to parsing issues with local TLE data caused by duplicate NORAD numbers and adjustments to the way UHM paints lines in the Traffic view to address reported errors. Furthermore, enhancements to LoTW status checks now ensure that updates occur automatically every 12 hours based on user-configured preferences, streamlining the process and ensuring accuracy.

The introduction of Live QSO Viewer (LQV) and Live World View (LWV) offers users innovative graphical representations of satellite traffic and station locations, enhancing situational awareness and operational efficiency. Additionally, the integration of GPS in version 1.0.0.84 enables users to connect GPS receivers for automatic grid location updates, simplifying tracking and reporting, especially for mobile users.

With the addition of features such as UHM integration, expanded satellite selection, and improved message handling, users can anticipate a more robust and user-friendly experience with the Greencube Terminal Program v1.0.0.90. These updates underscore a commitment to continuous improvement and innovation, ensuring Greencube Terminal Program remains the most popular application for GreenCube satellite communications. More information about installation, features, and updates can be found on Carsten’s website: https://www.moonbounce.dk/hamradio/greencube-terminal-program.html.

[ANS thanks Carsten Groen, OZ9AAR, for the above information]

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Chang’e-6 Successfully Launches: China’s Historic Lunar Mission Begins

China’s Chang’e-6 mission embarked on its historic journey on May 3rd, launching aboard a Long March 5 rocket from the Wenchang Satellite Launch Center on Hainan Island, China. This mission aims to retrieve samples from the far side of the Moon, a feat never before achieved. The spacecraft is set to undergo a 53-day voyage to the Moon and back, where it will collect lunar soil and rocks, offering invaluable insights into the Moon’s ancient history.

The mission targets the Moon’s South Pole-Aitken (SPA) basin, a region of particular interest due to its potential to unveil crucial information about the Moon’s past. This basin, formed by an ancient impact, holds clues about the events that shaped both the Moon and Earth billions of years ago, providing an opportunity to understand the differences between the near and far sides of the Moon.

Unlike previous lunar missions, which primarily focused on the near side, Chang’e-6 will explore the challenging terrain of the far side. Landing and communicating on this side of the Moon require sophisticated technology, including communications relay satellites. China, having achieved the first successful lunar far-side landing in 2019 with Chang’e-4, now endeavors to bring back samples from this uncharted territory.

The Chang’e-6 spacecraft is comprised of four components: an orbiter, lander, ascender, and reentry module. Upon reaching lunar orbit, the lander and ascender will descend to the Moon’s surface, collect approximately 2 kilograms (4.4 pounds) of lunar material using specialized tools, and return to lunar orbit. The orbiter will then carry the samples back to Earth, releasing the reentry module into the atmosphere for a soft landing.

During its 53-day mission, Chang’e-6 will communicate with Earth through the Queqiao-2 relay satellite, which features a large parabolic antenna. This communication link will enable scientists to monitor and control the mission’s progress and ensure the safe return of valuable lunar samples.

The scientific significance of Chang’e-6 extends beyond lunar exploration. The samples it retrieves will shed light on the Solar System’s tumultuous past, particularly the Late Heavy Bombardment period around 3.9 billion years ago. By studying the SPA basin’s age and composition, scientists hope to discern the origins of this event and its implications for Earth’s history and the potential for life elsewhere in the universe.

[ANS thanks Jason Davis, The Planetary Society, for the above information]

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The 2024 AMSAT President’s Club coins are here now!
Help Support GOLF and Fox Plus

Join the AMSAT President’s Club today and help
Keep Amateur Radio in Space!
https://www.amsat.org/join-the-amsat-presidents-club/

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NASA Reveals SpaceX’s Innovative Plan for Starship Refueling in Orbit

NASA recently outlined SpaceX’s plans for refueling Starships in low-Earth orbit, a critical step toward enabling ambitious lunar missions. Scheduled for next year, this demonstration involves linking two Starships in orbit. Under contract with NASA’s Artemis program, SpaceX aims to supply human-rated Starships for lunar landings, although the targeted 2026 launch for Artemis III highlights the project’s ambitious nature. Last year, NASA awarded a contract to Blue Origin, providing alternative options for lunar missions. Both companies designed their landers with future refueling capabilities, allowing for multiple missions and potential resource utilization on the Moon or Mars.

Amit Kshatriya, leading NASA’s “Moon to Mars” program, outlined SpaceX’s strategy for in-space refueling during a recent meeting. Despite challenges, progress is evident as SpaceX prepares for upcoming Starship test flights, aiming to tackle crucial technical hurdles. Before lunar missions become a reality, mastering in-space refueling is essential. SpaceX plans to demonstrate large-scale propellant transfer between two Starships in orbit next year. This milestone follows a successful cryogenic propellant transfer test during a previous Starship flight, funded by NASA.

With each test flight, SpaceX aims to enhance capabilities necessary for lunar landings. These include precise booster landings, in-orbit engine restarts, and controlled reentries—a prerequisite for deep space exploration. SpaceX’s long-term goal of frequent Starship launches hinges on rapid reusability, aligning with Elon Musk’s vision. Despite the challenges, progress is tangible, with plans underway to establish additional launch infrastructure in Texas and Florida.

The upcoming refueling demonstration involves autonomously linking two Starships in orbit, a task not without complexities. Yet, leveraging experience from Dragon capsule missions, SpaceX aims to navigate these challenges. The propellant transfer process relies on a pressure differential mechanism, simplifying the flow between donor and recipient tanks. Fine-tuning this procedure is crucial to avoid propellant loss during transfers.

Success in these demonstrations will determine the number of refueling tankers required for lunar missions. While predictions exist, practical tests will validate these estimates, ensuring mission success. As SpaceX pushes boundaries, industry experts emphasize the importance of collaboration and innovation. With a resilient team and the right attitude, SpaceX aims to overcome challenges and pioneer the next era of space exploration. While ambitious, SpaceX’s endeavors signify a paradigm shift in space exploration, driven by a collective vision of advancing humanity’s reach beyond Earth’s orbit.

[ANS thanks Stephen Clark, Ars Technica, for the above information]

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GridMasterMap Satellite Top 100 Rovers May 2024 Rankings

The May 2024 rankings for the Top 100 Rovers (Mixed LEO/MEO/GEO) in satellite operations, as determined by @GridMasterMap on Twitter, has been released. The ranking is determined by the number of grids and DXCC entities activated, taking into account only those grids where a minimum number of QSOs logged on the gridmaster.fr website have been validated by a third party. Grid numbers do not directly reflect the exact number of activations. Satellite operators are encouraged to upload their LoTW satellite contacts to https://gridmaster.fr in order to provide more accurate data.

Updated: 2024-05-01

1	ND9M	26	N5BO	51	SP5XSD	76	FG8OJ
2	NJ7H	27	K8BL	52	AD7DB	77	PT9BM
3	JA9KRO	28	LU5ILA	53	JL3RNZ	78	KJ7NDY
4	N5UC	29	KE4AL	54	F4DXV	79	KI7UXT
5	UT1FG	30	DL2GRC	55	KE9AJ	80	YU0W
6	OE3SEU	31	VE3HLS	56	KI7QEK	81	WA9JBQ
7	DL6AP	32	KB5FHK	57	PA3GAN	82	N4DCW
8	WI7P	33	KI7UNJ	58	N8RO	83	HB9GWJ
9	HA3FOK	34	LA9XGA	59	XE1ET	84	KB2YSI
10	K5ZM	35	F4BKV	60	KM4LAO	85	N0TEL
11	N6UA	36	N7AGF	61	VE1CWJ	86	VE3GOP
12	N9IP	37	JO2ASQ	62	SM3NRY	87	KI0KB
13	WY7AA	38	XE3DX	63	N4UFO	88	JM1CAX
14	W5PFG	39	K7TAB	64	VA3VGR	89	CU2ZG
15	AK8CW	40	KE0PBR	65	W1AW	90	K0FFY
16	AD0DX	41	KE0WPA	66	VA7LM	91	KG4AKV
17	DP0POL	42	N6DNM	67	PT2AP	92	AF5CC
18	WD9EWK	43	PR8KW	68	M1DDD	93	VE6WK
19	AD0HJ	44	AC0RA	69	DL4EA	94	W8MTB
20	ON4AUC	45	EB1AO	70	AA8CH	95	VE7PTN
21	KX9X	46	JK2XXK	71	N4AKV	96	DK9JC
22	KG5CCI	47	W7WGC	72	LU4JVE	97	K6VHF
23	ND0C	48	EA4NF	73	VE1VOX	98	N6UTC
24	DJ8MS	49	VK5DG	74	W8LR	99	PT9ST
25	F5VMJ	50	AA5PK	75	DF2ET	100	VO2AC

[ANS thanks @GridMasterMap for the above information]

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Need new satellite antennas?
Purchase an M2 LEO-Pack from the AMSAT Store!When you purchase through AMSAT, a portion of the proceeds goes towards
Keeping Amateur Radio in Space.
https://amsat.org/product-category/hardware/

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Changes to AMSAT-NA TLE Distribution for May 3, 2024

Two Line Elements or TLEs, often referred to as Keplerian elements or keps in the amateur community, are the inputs to the SGP4 standard mathematical model of spacecraft orbits used by most amateur tracking programs. Weekly updates are completely adequate for most amateur satellites. TLE bulletin files are updated daily in the first hour of the UTC day. New bulletin files will be posted immediately after reliable elements become available for new amateur satellites. More information may be found at https://www.amsat.org/keplerian-elements-resources/.

Correction to last week’s addition:
KASHIWA NORAD Cat ID 59508 Correct downlink 437.3753 MHz (Thanks Nico PA0DLO)

The following satellites have been removed from this week’s AMSAT-NA TLE distribution:
NIUSAT NORAD Cat ID 42766 Decayed from orbit on or about 27 April 2024
ExoCube 2 NORAD Cat ID 47319 Decayed from orbit on or about 30 April 2024

[ANS thanks AMSAT Orbital Elements page for the above information]

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ARISS NEWS

Amateurs and others around the world may listen in on contacts between amateurs operating in schools and allowing students to interact with astronauts and cosmonauts aboard the International Space Station. The downlink frequency on which to listen is 145.800 MHz worldwide.

+ Recently Completed Contacts

Centennial Campus Magnet Middle School Center for Innovation, Raleigh, NC, telebridge via K6DUE
The ISS callsign was NA1SS
The scheduled crewmember was Matthew Dominick KCØTOR
The ARISS mentor was AA6TB
Contact was successful: Wed 2024-05-01 12:03:49 UTC
Watch for Livestream at: https://www.youtube.com/watch?v=lnAZJknxsgw

Wireless Institute of Australia / Bundaberg High School Amateur Radio Club, Bundaberg, Queensland, Australia, telebridge via VK6MJ
The ISS callsign was NA1SS
The scheduled crewmember was Mike Barratt KD5MIJ
The ARISS mentor was VK4KHZ
Contact was successful: Sat 2024-05-04 10:28:24 UTC

+ Upcoming Contacts

Eric Knows CIC, Newcastle upon Tyne, United Kingdom, telebridge via K6DUE
The ISS callsign is presently scheduled to be NA1SS
The scheduled crewmember is Matthew Dominick KCØTOR
The ARISS mentor is MØXTD
Contact is go for: Sat 2024-05-11 08:42:32 UTC

The crossband repeater continues to be active (145.990 MHz up {PL 67} & 437.800 MHz down). 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.

The packet system is also active (145.825 MHz up & down).

As always, if there is an EVA, a docking, or an undocking; the ARISS radios are turned off as part of the safety protocol.

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.

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

[ANS thanks Charlie Sufana, AJ9N, one of the ARISS operation team mentors for the above information]

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Upcoming Satellite Operations

A growing number of satellite rovers are currently engaged in sharing their grid square activations on https://hams.at. By visiting the website, you gain easy access to comprehensive information about the operators responsible for activating specific grid squares. Additionally, you have the ability to assess the match score between yourself and a particular rover for a given pass, while also being able to identify the upcoming satellite passes that are accessible from your location.

[ANS thanks Ian Parsons, K5ZM, AMSAT rover page manager, for the above information]

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Hamfests, Conventions, Maker Faires, and Other Events

AMSAT Ambassadors provide presentations, demonstrate communicating through amateur satellites, and host information tables at club meetings, hamfests, conventions, maker faires, and other events.

Dayton Hamvention 2024
Friday May 17th – Sunday May 19th
Greene County Fairgrounds and Expo Center
120 Fairground Road
Xenia, OH 45385
https://hamvention.org

38th Annual Small Satellite Conference
August 3-8, 2024
Logan, UT, USA
https://smallsat.org

[ANS thanks the AMSAT Events page for the above information]

---

Want to fly the colors on your own grid expedition?
Get an AMSAT car flag and other neat stuff from our Zazzle store!
25% of the purchase price of each product goes towards Keeping Amateur Radio in Space

In this edition:

* NASA Astronaut Loral O’Hara, Crewmates Return from ISS
* 2024 AMSAT/TAPR Banquet To Be Held Friday, May 17
* New NASA Strategy Envisions Sustainable Future for Space Ops
* Trash From The ISS May Have Hit A House In Florida
* VUCC and DXCC Satellite Standings for April 2024
* Changes to AMSAT-NA TLE Distribution for April 12
* Ending an Era, Final Delta Rocket Launched This Week
* ARISS News
* Upcoming Satellite Operations
* Hamfests, Conventions, Maker Faires, and Other Events
* Satellite Shorts From All Over

The AMSAT News Service bulletins are a free, weekly news and information service of AMSAT, the Radio Amateur Satellite Corporation. ANS publishes news related to Amateur Radio in Space including reports on the activities of a worldwide group of Amateur Radio operators who share an active interest in designing, building, launching and communicating through analog and digital Amateur Radio satellites.

The news feed on http://www.amsat.org publishes news of Amateur Radio in Space as soon as our volunteers can post it.

Please send any amateur satellite news or reports to: ans-editor [at] amsat.org

You can sign up for free e-mail delivery of the AMSAT News Service Bulletins via the ANS List; to join this list see: https://mailman.amsat.org/postorius/lists/ans.amsat.org/

ANS-105 AMSAT News Service Weekly Bulletins

DATE 2024 April 14

NASA Astronaut Loral O’Hara, Crewmates Return from ISS

NASA astronaut Loral O’Hara, KI5TOM, returned to Earth after a six-month research mission aboard the International Space Station on April 6, along with Roscosmos cosmonaut Oleg Novitskiy, and Belarus spaceflight participant Marina Vasilevskaya.

The trio departed the space station aboard the Soyuz MS-24 spacecraft at 03:54 UTC, and made a safe, parachute-assisted landing at 07:17 (12:17 p.m. Kazakhstan time), southeast of the remote town of Dzhezkazgan, Kazakhstan.

NASA astronaut Loral O’Hara returned to Earth on April 6, 2024, after a six-month research mission aboard the International Space Station.
(NASA image)

O’Hara launched Sept. 15, 2023, alongside Roscosmos cosmonauts Oleg Kononenko, RN3DX, and Nikolai Chub, who both will remain aboard the space station to complete a one-year mission. Novitskiy and Vasilevskaya launched aboard Soyuz MS-25 on March 23 along with NASA astronaut Tracy C. Dyson, who will remain aboard the orbiting laboratory until this fall.

O’Hara spent a total of 204 days in space as part of her first spaceflight. She completed approximately 3,264 orbits of the Earth and a journey of more than 86.5 million miles. O’Hara worked on scientific activities aboard the space station, including investigating heart health, cancer treatments, and space manufacturing techniques during her stay aboard the orbiting laboratory.

Following post-landing medical checks, the crew returned to the recovery staging city in Karaganda, Kazakhstan. O’Hara then boarded a NASA plane bound for her return to the agency’s Johnson Space Center in Houston.

(Oct. 4, 2023) — The official Expedition 71 crew portrait with (bottom row from left) Roscosmos cosmonaut Alexander Grebenkin and NASA astronauts Mike Barratt, Matthew Dominick, and Jeanette Epps. In the back row (from left) are, NASA astronaut Loral O’Hara and Roscosmos cosmonauts Nikolai Chub and Oleg Kononenko. (NASA photo)

With the undocking of the Soyuz MS-24 spacecraft with O’Hara, Novitskiy and Vasilevskaya, Expedition 71 officially began aboard the station. NASA astronauts Michael Barratt, KD5MIJ, Matthew Dominick, KCØTOR, Tracy C. Dyson, and Jeannette Epps, KF5QNU, as well as Roscosmos cosmonauts Nikolai Chub, Alexander Grebenkin, RZ3DSE, and Oleg Kononenko, RN3DX, make up Expedition 71 and will remain on the orbiting laboratory until this fall.

[ANS thanks NASA for the above information]

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The 2024 AMSAT President’s Club coins are here now!
Help Support GOLF and Fox Plus

Join the AMSAT President’s Club today and help
Keep Amateur Radio in Space!
https://www.amsat.org/join-the-amsat-presidents-club/

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2024 AMSAT/TAPR Banquet To Be Held Friday, May 17

The 15th annual AMSAT/TAPR Banquet will be held at the Kohler Presidential Banquet Center on Friday, May 17th at 18:30 EDT. This dinner is always a highlight of the TAPR (Tucson Amateur Packet Radio) and AMSAT (Radio Amateur Satellite Corp.) activities during the Dayton Hamvention. This year’s banquet speaker will be Bill Reed, NX5R, AMSAT PACSAT Project Manager, who will highlight the forthcoming PACSAT digital communications payload.

The Kohler Presidential Banquet Center is located at 4548 Presidential Way, Kettering, Ohio – about 20 minutes away from the Greene County Fairgrounds.

Tickets ($60 each) may be purchased from the AMSAT store. The banquet ticket purchase deadline is Friday, May 10th. Banquet tickets must be purchased in advance and will not be sold at the AMSAT booth. There will be no tickets to pick up at the AMSAT booth. Tickets purchased on-line will be maintained on a list with check-in at the door at the banquet center. Seating is limited to the number of meals reserved with the Kohler caterers based on the number of tickets sold by the deadline.

Menu

Set out as guests arrive

Crudite Platter
with dip on the side

Dinner Buffet

Roast Prime Rib of Beef Au jus
Carved on site. Served with horseradish and au jus on the side.

Almond Chicken

Deep Fried Tempura Shrimp
with Tomato Lemon Aioli

Risotto Cake

Fresh Asparagus

Smashed Cauliflower

Served to the table

Strawberry Fields

Assorted Dinner Rolls
Served with butter

Separate table

Assorted Layer Cake

Cheesecake

Beverages

Cash Bar

Regular and Decaf Coffee, Hot & Iced Tea, Water

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New NASA Strategy Envisions Sustainable Future for Space Operations

To address a rapidly changing space operating environment and ensure its preservation for generations to come, NASA released the first part of its integrated Space Sustainability Strategy, on April 9, advancing the agency’s role as a global leader on this crucial issue.

“The release of this strategy marks true progress for NASA on space sustainability,” said NASA Deputy Administrator Pam Melroy. “Space is busy – and only getting busier. If we want to make sure that critical parts of space are preserved so that our children and grandchildren can continue to use them for the benefit of humanity, the time to act is now. NASA is making sure that we’re aligning our resources to support sustainable activity for us and for all.”

For decades, NASA has served as a proactive leader for responsible and sustainable space operations. Entities across the agency develop best practices, analytic tools, and technologies widely adopted by operators around the world. The new strategy seeks to integrate those efforts through a whole-of-agency approach – allowing NASA to focus its resources on the most pressing issues. To facilitate that integration, NASA will appoint a new director of space sustainability to coordinate activities across the agency.

Key aspects of our approach include providing global leadership in space sustainability, supporting equitable access to space, and ensuring NASA’s missions and operations enhance space sustainability.

Space environments currently are seeing the rapid emergence of commercial capabilities, many of them championed by NASA. These capabilities include increased low Earth orbit satellite activity and plans for the use of satellite constellations, autonomous spacecraft, and commercial space destinations. However, this increased activity also has generated challenges, such as an operating environment more crowded with spacecraft and increased debris. Understanding the risks and benefits associated with this growth is crucial for space sustainability.

Developed under the leadership of a crossagency advisory board, the space sustainability strategy focuses on advancements NASA can make toward measuring and assessing space sustainability in Earth orbit, identifying cost-effective ways to meet sustainability targets, incentivizing the adoption of sustainable practices through technology and policy development, and increasing efforts to share and receive information with the rest of the global space community.

NASA’s approach to space sustainability recognizes four operational domains: Earth, Earth orbit, the orbital area near and around the Moon known as cislunar space, and deep space, including other celestial bodies. The first volume of the strategy focuses on sustainability in Earth orbit. NASA plans to produce additional volumes focusing on the other domains.

Learn more about the Space Sustainability Strategy at: https://www.nasa.gov/spacesustainability

[ANS thanks NASA for the above information]

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Need new satellite antennas?
Purchase M2 LEO-Packs from the AMSAT Store.

When you purchase through AMSAT, a portion of the proceeds goes towards
Keeping Amateur Radio in Space.
https://amsat.org/product-category/hardware/

---

Trash From The ISS May Have Hit A House In Florida

A few weeks ago, something from the heavens came crashing through the roof of Alejandro Otero’s Florida home, and NASA is on the case.

Otero wasn’t home at the time. A Nest home security camera captured the sound of the crash at 2:34 pm local time (19:34 UTC) on March 8. That’s an important piece of information because it is a close match for the time—2:29 pm EST (19:29 UTC)—that US Space Command recorded the reentry of a piece of space debris from the space station. At that time, the object was on a path over the Gulf of Mexico, heading toward southwest Florida.

In all likelihood, this nearly 2-pound object came from the International Space Station.
Otero said it tore through the roof and both floors of his two-story house in Naples, Florida.
(Photo by Alejandro Otero on X)

This space junk consisted of depleted batteries from the ISS, attached to a cargo pallet that was originally supposed to come back to Earth in a controlled manner. But a series of delays meant this cargo pallet missed its ride back to Earth, so NASA jettisoned the batteries from the space station in 2021 to head for an unguided reentry.

NASA has recovered the debris from the homeowner, according to Josh Finch, an agency spokesperson. Engineers at NASA’s Kennedy Space Center will analyze the object “as soon as possible to determine its origin,” Finch told Ars. “More information will be available once the analysis is complete.”

The entire pallet, including the nine disused batteries from the space station’s power system, had a mass of more than 2.6 metric tons (5,800 pounds), according to NASA. Size-wise, it was about twice as tall as a standard kitchen refrigerator. It’s important to note that objects of this mass, or larger, regularly fall to Earth on guided trajectories, but they’re usually failed satellites or spent rocket stages left in orbit after completing their missions.

In a post on X, Otero said he is waiting for communication from “the responsible agencies” to resolve the cost of damages to his home. If the object is owned by NASA, Otero or his insurance company could make a claim against the federal government under the Federal Tort Claims Act, according to Michelle Hanlon, executive director of the Center for Air and Space Law at the University of Mississippi.

“It gets more interesting if this material is discovered to be not originally from the United States,” she told Ars. “If it is a human-made space object which was launched into space by another country, which caused damage on Earth, that country would be absolutely liable to the homeowner for the damage caused.”

This could be an issue in this case. The batteries were owned by NASA, but they were attached to a pallet structure launched by Japan’s space agency.

NASA typically doesn’t want large chunks of space debris falling to Earth with an uncontrolled reentry. You can trace the reason this object came down unguided back to a Russian launch failure more than five years ago. NASA astronaut Nick Hague and Russian commander Alexey Ovchinin aborted their launch on a Soyuz spacecraft when their rocket failed shortly after liftoff.

One of Hague’s jobs at the International Space Station would have been to go outside on spacewalks to help install a new set of lithium-ion batteries recently delivered by a Japanese HTV cargo ship. But Hague didn’t reach the station in 2018, so NASA put off the spacewalks until a new team of astronauts arrived at the complex.

This interruption to the space station’s carefully choreographed schedule threw off the entire multiyear plan for upgrading the batteries on the outpost’s electrical system. Instead of putting the old batteries back into the HTV for a guided destructive reentry over the open ocean, NASA held onto the cargo pallet at the station when the HTV supply ship needed to depart.

Each of the subsequent HTV missions delivered more fresh batteries to the space station and then departed the complex with the cargo pallet and decommissioned batteries from the previous HTV mission. That was the case until there were no more HTVs to fly. Japan’s last HTV spacecraft departed the ISS in 2020 with the cargo pallet and batteries from the prior flight, stranding the last battery pallet at the station.

The space station’s other cargo vehicles—SpaceX’s Dragon, Northrop Grumman’s Cygnus, and the Russian Progress—can’t accommodate the HTV cargo pallet.

So NASA decided to jettison the battery pallet using the space station’s robotic arm in March 2021 in order to free up real estate on the lab. Without any propulsion of their own, the batteries were adrift in orbit for three years until aerodynamic drag finally pulled the pallet back into the atmosphere on March 8, almost exactly three years later.

It is notoriously difficult to predict where a piece of space junk will reenter the atmosphere. US Space Command precisely tracks tens of thousands of objects in Earth orbit, but the exact density of the upper atmosphere is still largely an unknown variable. Even a half-day before the reentry, US Space Command’s estimate for when the battery pallet would fall to Earth had a window of uncertainty spanning six hours, enough time for the object to circle the planet four times.

And if you don’t know when something will reenter the atmosphere, you can’t predict where it will come down.

If NASA confirms the projectile that fell through Otero’s house last month came from the ISS, it would join a small handful of incidents when an object falling out of orbit damaged someone’s property.

Earth is a big place. It’s fairly common for someone to find a piece of fallen space junk in a field or washed up on a beach. But it is rare for a reentry to hit a structure or injure a person.

Falling space debris has never killed anyone. According to ESA, the annual risk of an individual human being injured by space debris is less than 1 in 100 billion.

[ANS thanks ARS Technical for the above information. Read the entire story at https://bit.ly/3xFJs9W.]

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VUCC and DXCC Satellite Standings for April 2024

————————————————————
VUCC Satellite Award/Endorsement Change Summary for March 01, 2024 to April 01, 2024.
————————————————————

Callsign	March 2024	April 2024
K8DP	1629	1701
AA5PK	1450	1500
N8RO	1444	1455
KF7R	1128	1154
XE1AO	1000	1111
KE8RJU	950	1030
WI7P	975	1008
K9UO	950	1001
KQ4DO	880	906
K0JM	702	801
KK4YEL	728	768
N8MR	684	700
A65BR	554	632
JS1LQI	500	617
N3CAL	580	610
SV8CS	New	511
JR0GAS	360	500
KO9A	434	472
N7UJJ	308	462
HC2FG	350	413
PA7RA	408	409
DL8GAM	375	400
HB9RYZ	248	365
W6AER	302	355
K6VHF	300	325
JH0BBE	322	324
XE1BMG	120	300
KA9CFD	126	283
I1FQH	173	249
AG1A	100	200
JO4JKL	135	188
W0PR	New	176
JK4JMO	New	161
AA0K	100	155
WD9EWK(DM25)	120	138
N6UTC(DM05)	101	128
N8HRZ	New	102
WD5GRW	New	101
K9DOG	New	100
W9FF	New	100

————————————————————

Congratulations to the new VUCC holders.
SV8CS is first VUCC Satellite holder from KM07

DXCC Satellite Standing April 2024
————————————————————
DXCC Satellite Award/Endorsement Change Summary for March 01, 2024 to April 01, 2024.
————————————————————

Callsign	March 2024	April 2024
SV8CS	153	159
KB8VAO	135	148
HB9RYZ	145	147
DL4ZAB	138	139
NK1K	129	138
DL2MIH	111	132
XE1MEX	122	125
KK5DO	106	108
K9UO	101	106
DL8GAM	100	101
XE1L	New	100

————————————————————

Congratulations to the new DXCC Satellite holder.
XE1L is first DXCC Satellite holder from DL80

[ANS thanks Jon Goering, N7AZ, for the above information]

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Want to fly the colors on your own grid expedition?

Get your AMSAT car flag and other neat stuff from our Zazzle store!
25% of the purchase price of each product goes towards
Keeping Amateur Radio in Space
https://www.zazzle.com/amsat_gear

---

Changes to AMSAT-NA TLE Distribution for April 12

Two Line Elements or TLEs, often referred to as Keplerian elements or keps in the amateur community, are the inputs to the SGP4 standard mathematical model of spacecraft orbits used by most amateur tracking programs. Weekly updates are completely adequate for most amateur satellites. TLE bulletin files are updated daily in the first hour of the UTC day. New bulletin files will be posted immediately after reliable elements become available for new amateur satellites. More information may be found at https://www.amsat.org/keplerian-elements-resources/.

This week there are no additions or deletions to the AMSAT TLE distribution.

[ANS thanks Joe Fitzgerald, KM1P, AMSAT Orbital Elements Manager, for the above information]

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Ending an Era, Final Delta Rocket Launched This Week

Ending an era in U.S. rocketry, United Launch Alliance fired off its 16th and final triple-core Delta 4 Heavy Tuesday, launching a classified spy satellite in the last hurrah of a storied family of rockets dating back to the dawn of the space age.

The Heavy’s three hydrogen-fueled RS-68A first stage engines ignited with a rush of bright orange flame at 12:53 p.m. EDT, smoothly pushing the 235-foot-tall rocket away from pad 37 at the Cape Canaveral Space Force Station in Florida.

The last Delta 4 Heavy rocket climbs away from the Cape Canaveral Space Force Station on April 9, 2024,
carrying a classified National Reconnaissance Office spy satellite. (United Launch Alliance photo.)

The launch came 12 days late, primarily because of work to replace a pump in a system that supplies nitrogen gas to multiple launch pads from a pipeline running through the Kennedy Space Center and the Cape Canaveral Space Force Station. There were no problems Tuesday.

Mounted atop the rocket was a classified satellite provided by the National Reconnaissance Office, the secretive government agency that manages the nation’s fleet of sophisticated optical and radar imaging reconnaissance satellites and electronic eavesdropping stations.

In keeping with standard NRO-U.S. Space Force policy for such missions, no details about the NROL-70 payload were released. But about six hours after launch, the National Reconnaissance Office declared the launch a success, indicating the satellite reached its planned orbit.The final appearance of a Delta rocket 63 years after the first variant’s maiden flight was an emotional milestone for the managers, engineers and technicians who assembled and launched the last member of the family.

The Delta family of stages and rockets had its roots in the early space program, first serving in the nation’s fleet of intermediate-range ballistic missiles and evolving through multiple versions used to put military, NASA and civilian payloads into orbit.

The now-retired Delta 2 debuted in 1990, putting the first Global Positioning System satellites into orbit and sending multiple planetary probes into deep space, including Messenger to Mercury, multiple Mars orbiters, the Pathfinder, Spirit and Opportunity Mars rovers, the Spitzer Space Telescope and many more.

The single-core Delta 4 first flew in 2002 with the first Heavy following two years later. The single-core version flew the program’s final flight in 2019. Tuesday’s launch was the 45th flight of a Delta 4 and the 16th and final Delta 4 Heavy.

“Launching the last Delta 4 is bittersweet for me,” Col. Eric Zarybnisky, director of NRO’s Office of Space Launch, said in a statement. “I was part of the team that launched the first Delta 4 for the NRO. Since that time, the Delta 4 has put amazing capability on orbit for this nation.”

Tory Bruno, president and CEO of United Launch Alliance, also called the flight a “bittersweet” moment as the company continues its transition to next-generation Vulcan rockets, phasing out its more expensive Delta and Atlas families.

“Soon, Vulcan will pick up that mantle and we’re going to retire this venerable rocket that has made so much important work for our country,” he said after launch in a pre-recorded video.

[ANS thanks William Harwood, CBS News, for the above information]

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ARISS NEWS

Amateurs and others around the world may listen in on contacts between amateurs operating in schools and allowing students to interact with astronauts and cosmonauts aboard the International Space Station. The downlink frequency on which to listen is 145.800 MHz worldwide.

RECENTLY COMPLETED

ARTADEMIA, Milano, Italy, AND Scuola Secondaria I grado “A. Moro”, Ponte Lambro (CO), Italy, direct via IK1SLD
The ISS callsign was OR4ISS. The crewmember was Jeanette Epps, KF5QNU. The ARISS mentor was IZ2GOJ.
Contact was successful: Wed 2024-04-10 13:16:48 UTC 53 degrees elevation
Congratulations to the ARTADEMIA and Scuola Secondaria I grado “A. Moro” students, Jeanette, mentor IZ2GOJ, and ground station IK1SLD!
Watch the recorded Livestream at https://www.youtube.com/live/sJoKzK2292U?si=BxXWi41cfsJJv4c2

UPCOMING

Mrs Ethelston’s CE Primary Academy at Axminster Community Academy Trust, Lyme Regis, United Kingdom, direct via GB4ACA
The ISS callsign is presently scheduled to be NA1SS. The scheduled crewmember is Matthew Dominick, KCØTOR. The ARISS mentor is MØXTD.
Contact is go for: Wed 2024-04-17 10:44:49 UTC 81 degrees elevation
Watch for Livestream at https://live.ariss.org

Mountain View Elementary, Marietta, GA, direct via KQ4JVI
The ISS callsign is presently scheduled to be NA1SS. The scheduled crewmember is Jeanette Epps, KF5QNU. The ARISS mentor is K4RGK.
Contact is go for: Thu 2024-04-18 17:48:40 UTC 44 deg
Watch for Livestream at https://youtube.com/live/lDjyV6P9x6I

The crossband repeater continues to be active (145.990 MHz up {PL 67} & 437.800 MHz down). 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.

The packet system (145.825 MHz up & down) is currently misconfigured and not in operation.

The Ham TV system (2395.00 MHz down) is aboard but currently stowed. The BATC Ham TV wiki is at https://wiki.batc.org.uk/HAMTV_from_the_ISS and there is also a discussion channel available on the site.

The SSTV system (145.800 MHz down) is currently stowed.

As always, if there is an EVA, a docking, or an undocking; the ARISS radios are turned off as part of the safety protocol.

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.

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

[ANS thanks Charlie Sufana, AJ9N, one of the ARISS operation team mentors for the above information]

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Upcoming Satellite Operations

Doug, N6UA will soon embark on a big circuitous rove covering parts of MT, ID, OR and NV. I’m guessing this will take place in the next week or two, but only Doug knows for certain. APRS is gonna be your friend here.

A growing number of satellite rovers are currently engaged in sharing their grid square activations on https://hams.at. By visiting the website, you gain easy access to comprehensive information about the operators responsible for activating specific grid squares. Additionally, you have the ability to assess the match score between yourself and a particular rover for a given pass, while also being able to identify the upcoming satellite passes that are accessible from your location.

[ANS thanks Ian Parsons, K5ZM, AMSAT rover page manager, for the above information]

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Hamfests, Conventions, Maker Faires, and Other Events

AMSAT Ambassadors provide presentations, demonstrate communicating through amateur satellites, and host information tables at club meetings, hamfests, conventions, maker faires, and other events.

2024 CubeSat Developer’s Workshop
Tuesday April 23rd – Thursday April 25th
Cal Poly, San Luis Obispo, CA
https://www.cubesatdw.org/

Dayton Hamvention 2024
Friday May 17th – Sunday May 19th
Greene County Fairgrounds and Expo Center
120 Fairground Road
Xenia, OH 45385
https://hamvention.org

[ANS thanks the AMSAT Events page for the above information]

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Satellite Shorts From All Over

+ NASA now knows what knocked Voyager 1 offline, but it will take a while to fix. Voyager 1’s remaining Flight Data Subsystem (its redundant copy failed in 1982) is the reason that the distant spacecraft is currently offline. Voyager’s FDS were the first computers on a spacecraft to use volatile memory. Unfortunately, one of Voyager 1’s FDS memory chips is malfunctioning—NASA hopes they can work around it, but it will likely take months.(ANS thanks The Orbital Index for the above information.)

+ If you have 26 minutes to spare, and want to explore more intricacies of Ohm’s Law than you were taught in school, watch electricity flow through a wire a nanosecond at a time at https://www.youtube.com/watch?v=2AXv49dDQJw (ANS thanks The Orbital Index for the above information.)

+ Following repairs to a liquid oxygen leak in the Falcon Heavy’s core booster, NASA and SpaceX have rescheduled the launch of the GOES-U satellite, the final installment in NOAA’s GOES-R Series, for June 25. The adjustment aims to ensure thorough examination and resolution of the issue, discovered during a routine inspection in February. With preparations now back on track, the deployment of GOES-U from Kennedy Space Center’s Launch Complex 39A will proceed using a SpaceX Falcon Heavy rocket. Managed cooperatively by NOAA and NASA, the GOES-R Series Program encompasses satellite operations, data dissemination, and ground systems oversight, with NASA’s Goddard Space Flight Center leading spacecraft acquisition and instrument development. Lockheed Martin’s contributions include design, construction, and testing of the satellites, while L3Harris Technologies has provided key instruments and ground systems essential for capturing atmospheric observations. (ANS thanks Clarence Oxford, SpaceDaily, for the above information)

+ The European Union is poised to finalize a security deal with the United States, enabling payments to Elon Musk’s SpaceX for satellite launches due to delays in Europe’s Ariane rocket system. Approved by national general affairs ministers, the agreement grants European Union and European Space Agency (ESA) personnel continuous access to launch facilities and prioritized debris retrieval rights in case of SpaceX rocket failures. With a 200 million deal already struck last year, SpaceX is contracted to launch four Galileo satellites as Ariane 6 faces further delays. While Ariane 6 is slated for a summer launch, commercial missions await later scheduling. The arrangement with SpaceX allows for two Galileo satellite launches this year, necessitated by Soyuz launcher cancellations and Ariane 6 delays. The security pact ensures access to classified Galileo equipment, with provisions for debris retrieval and a sunset clause by 2027 to address concerns about reliance on SpaceX over Ariane. (ANS thanks Joshua Poaaner, Politico Europe, for the above information)

+ NASA has been tasked by the White House to establish a lunar-centric time reference system, known as Coordinated Lunar Time (LTC), to aid missions requiring extreme precision on the moon. The agency has until the end of 2026 to set up LTC, which is not akin to Earth’s time zones but provides a frame of time reference for the moon. LTC will accommodate the slightly faster passage of time on the moon, approximately 58.7 microseconds each day compared to Earth, due to its lower gravity. It will serve as a benchmark for timekeeping for lunar spacecraft and satellites, crucial for their missions. NASA’s Artemis program, set to begin astronaut missions to the lunar surface in 2026, necessitates LTC for synchronization among Earth, lunar satellites, bases, and astronauts, without which data transfers and communications could be compromised. Developing LTC will require international agreements, possibly influenced by the Universal Coordinated Time (UTC) standard, with potential implementation involving atomic clocks on the moon and adherence to existing space agreements like the Artemis accords. (ANS thanks Diana Ramirez-Simon, The Guardian, for the above information)

 

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Join AMSAT today at https://launch.amsat.org/

In addition to regular membership, AMSAT offers membership to:

* Societies (a recognized group, clubs or organization).
* Primary and secondary school students are eligible for membership at one-half the standard yearly rate.
* Post-secondary school students enrolled in at least half time status shall be eligible for the student rate for a maximum of 6 post-secondary years in this status.
* Memberships are available for annual and lifetime terms.

Contact info [at] amsat.org for additional membership information.

73 and remember to help Keep Amateur Radio in Space!

This week’s ANS Editor, Mark Johns, KØJM
k0jm [at] amsat.org

In this edition:

* AMSAT Seeks Volunteers to Assist with 2024 Hamvention AMSAT Booth
* AMSAT AO-109 (Fox-1E) Satellite Sets New Processor Uptime Record
* ESA Unveils Proba-3 Mission: Artificial Solar Eclipses on Demand
* GridMasterMap Satellite Top 100 Rovers April 2024 Rankings
* Changes to AMSAT-NA TLE Distribution for April 5, 2024
* ARISS News
* Upcoming Satellite Operations
* Hamfests, Conventions, Maker Faires, and Other Events
* Satellite Shorts From All Over

The AMSAT News Service bulletins are a free, weekly news and information service of AMSAT, the Radio Amateur Satellite Corporation. ANS publishes news related to Amateur Radio in Space including reports on the activities of a worldwide group of Amateur Radio operators who share an active interest in designing, building, launching and communicating through analog and digital Amateur Radio satellites.

The news feed on https://www.amsat.org publishes news of Amateur Radio in Space as soon as our volunteers can post it.

Please send any amateur satellite news or reports to: ans-editor [at] amsat.org

You can sign up for free e-mail delivery of the AMSAT News Service Bulletins via the ANS List; to join this list see: https://mailman.amsat.org/postorius/lists/ans.amsat.org/

ANS-098 AMSAT News Service Weekly Bulletins

To: All RADIO AMATEURS
From: Radio Amateur Satellite Corporation
712 H Street NE, Suite 1653
Washington, DC 20002

DATE 2024 April 07

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AMSAT Seeks Volunteers to Assist with 2024 Hamvention AMSAT Booth

With less than six weeks until the 2024 Dayton Hamvention, scheduled for May 17th to May 19th in Xenia, Ohio, excitement mounts for the 72nd installment of this premier gathering for ham operators worldwide. In 2023, attendance surged to 33,861, surpassing both the previous year and pre-pandemic records, indicating growing enthusiasm. The 2024 event, anticipated to draw even larger crowds, will also host the ARRL National Convention.

AMSAT, a key exhibitor, will once again occupy a spacious 1,200 square foot area at Building 1’s north end, known as the Maxim building. This location, ideally situated for its ventilation and access to the outdoor satellite ground station, is perfect for showcasing AMSAT’s exhibits. The booth will feature various attractions, including engineering team members, CubeSatSim, Beginner’s Corner, Youth Initiative, merchandise sales, software demonstrations, and membership sign-ups. Notably, this year’s booth will spotlight the revamped AMSAT Ambassador program, offering opportunities for engagement.

AMSAT is actively seeking volunteers to assist with booth activities and invites enthusiasts to dedicate their time. Last year, around 20 volunteers played crucial roles in fostering meaningful interactions with attendees. Volunteers, whether able to commit a few hours or the entire weekend, are warmly encouraged to participate.

Aligned with this year’s theme of “Expanding our Community,” AMSAT aims to strengthen its presence by recruiting new members and volunteers. For those eager to be part of AMSAT’s presence at Dayton Hamvention or request more information about volunteering, Phil Smith, W1EME, AMSAT Hamvention Team Leader, serves as the point of contact. To volunteer or inquire further, individuals can reach out to Phil via email at w1eme [at] amsat.org. Your involvement not only enriches the event but also contributes to the vibrant amateur radio community.

[ANS thanks Phil Smith, W1EME, AMSAT Hamvention Team Leader, for the above information]

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AMSAT AO-109 (Fox-1E) Satellite Sets New Processor Uptime Record

AMSAT’s AO-109, also known as Fox-1E, has recently achieved a remarkable milestone. Launched in January 2021, this satellite operates with an 8 mW signal, best suited for CW and FT4 communications among amateur radio enthusiasts. Recent telemetry data from the Dwingeloo Radiotelescope in The Netherlands has revealed an impressive feat: AO-109 has set a new record for processor uptime. This information was gathered by Alan Biddle, WA4SCA, who has meticulously monitored telemetry reports on a daily basis and calculated the duration of each reset, allowing for precise correlation of telemetry frames with UTC time.

The Fox satellites are designed to undergo onboard computer resets triggered by factors like radiation exposure and low battery voltage. Time on these satellites is measured by counting resets plus the duration since the last reset. It is common for the Fox satellites to reset every few days or weeks, especially when passing over the South Atlantic Anomaly. However, the processor on AO-109 has been running continuously since September 2023, accumulating over 18 million seconds of uptime—far surpassing any other Fox satellite.

Launched on January 17, 2021, as part of the ELaNa 20 mission using a LauncherOne rocket operated by Virgin Orbit, AO-109 was carried aloft by a modified Boeing 747 named “Cosmic Girl” from the Mojave Air and Space Port in California, United States. After reaching an altitude of approximately 35,000 feet (11,000 meters), the rocket was released into space. This launch, conducted under NASA’s CubeSat Launch Initiative program, marked the beginning of the satellite’s mission to facilitate amateur radio communications and technology research.

AO-109 represents the fifth iteration of the “Fox” 1U amateur radio satellites series developed by AMSAT, featuring a 30KHz linear transponder radio. Upon becoming operational on July 20, 2021, AO-109 embarked on a mission to serve both amateur radio and technology research objectives. Among its key payloads is RadFXSat-2, a collaboration with Vanderbilt University, aimed at studying the effects of space radiation on specific SRAM types. Consistent with the Fox 1A design blueprint, Fox-1E is equipped with a 2-meter whip antenna and a 70 cm whip antenna.

With its anticipated re-entry into Earth’s atmosphere in the coming weeks, users are encouraged to make the most of AO-109 while it’s still operational. Current reports suggest the satellite’s altitude is around 300 km, which is lower than the ISS orbiting altitude of 370–460 km.

[ANS thanks Burns Fisher, WB1FJ, and Alan Biddle, WA4SCA, for the above information]

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The 2024 AMSAT President’s Club coins are here now!
Help Support GOLF and Fox Plus

Join the AMSAT President’s Club today and help
Keep Amateur Radio in Space!
https://www.amsat.org/join-the-amsat-presidents-club/

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ESA Unveils Proba-3 Mission: Artificial Solar Eclipses on Demand

Next week, a celestial spectacle will unfold across North America as millions of people witness a total solar eclipse. Alongside eager spectators, solar physicists worldwide are gearing up for the event, drawn by the opportunity to study the Sun’s enigmatic corona, typically obscured by its intense luminosity. However, thanks to a innovative initiative by the European Space Agency (ESA), sustained examination of the solar corona will soon become feasible through the Proba-3 mission.

In Belgium last week, the European Space Agency revealed the spacecraft pair which constitute the Proba-3 mission. This initiative aims to generate orbital solar eclipses at will, providing researchers with extended periods to scrutinize the Sun’s ethereal corona. The mission comprises two spacecraft: the Occulter and the Coronagraph. Positioned approximately 150 meters apart, these spacecraft will align meticulously with the Sun, with the Occulter casting a shadow onto the Coronagraph, effectively blocking out the Sun’s glare and unveiling the corona.

Dietmar Pilz, ESA’s Director of Technology, Engineering, and Quality, explains, “The two spacecraft will act as if they are one enormous 150-meter-long instrument.” However, achieving such precision poses immense technical challenges. Even the slightest misalignment could disrupt the mission’s efficacy. Consequently, the development process, spearheaded by a consortium of ESA Member States led by Spain and Belgium, has been extensive.

The fundamental concept of generating artificial solar eclipses in orbit isn’t novel. Previous attempts, such as the Apollo-Soyuz Test Project in 1975, have explored similar endeavors. However, Proba-3 seeks to institutionalize this capability through precise formation flying, enabling up to six hours of continuous observation per orbit lasting 19 hours and 36 minutes.

Solar eclipses, a consequence of the fortunate alignment of the Sun and the Moon, unveil the solar corona — a region of profound scientific and practical significance. Significantly hotter than the Sun’s surface, the corona influences space weather, solar wind, and phenomena like coronal mass ejections, which can impact satellite operations and terrestrial communications networks.

Proba-3’s groundbreaking approach involves orchestrating the Occulter and Coronagraph to operate as a unified entity, thus minimizing diffraction effects and maximizing the observation of the corona. This collaboration, facilitated by advanced positioning technologies, promises to unveil the mysteries of the corona within the range of 3 to 1.1 solar radii from the Sun.

The mission’s autonomy is paramount, with precise formation flying orchestrated autonomously to minimize external perturbations. This autonomy enables the spacecraft to maintain precise alignment for optimal observation of the corona while passively drifting during the remainder of the orbit.

Beyond its scientific implications, the success of Proba-3 could herald a new era of space missions, facilitating endeavors like in-orbit satellite servicing and deploying larger-scale space infrastructure. Moreover, the mission’s instruments, like ASPIICS and the radiometer, hold promise for climate modeling and advancing our understanding of solar dynamics.

As the world awaits the North American total solar eclipse, members of Proba-3’s science team seize the opportunity to test mission hardware. Components like polarizing filter wheels and alternative LED technologies will undergo rigorous examination, further refining the mission’s capabilities.

[ANS thanks the European Space Agency for the above information]

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GridMasterMap Satellite Top 100 Rovers April 2024 Rankings

The April 2024 rankings for the Top 100 Rovers (Mixed LEO/MEO/GEO) in satellite operations, as determined by @GridMasterMap on Twitter, has been released. The ranking is determined by the number of grids and DXCC entities activated, taking into account only those grids where a minimum number of QSOs logged on the gridmaster.fr website have been validated by a third party. Grid numbers do not directly reflect the exact number of activations. Satellite operators are encouraged to upload their LoTW satellite contacts to https://gridmaster.fr in order to provide more accurate data.

Updated: 2024-04-02

1	ND9M	26	N5BO	51	SP5XSD	76	FG8OJ
2	NJ7H	27	K8BL	52	AD7DB	77	PT9BM
3	JA9KRO	28	LU5ILA	53	JL3RNZ	78	KJ7NDY
4	N5UC	29	KE4AL	54	F4DXV	79	KI7UXT
5	UT1FG	30	DL2GRC	55	KE9AJ	80	YU0W
6	OE3SEU	31	VE3HLS	56	KI7QEK	81	WA9JBQ
7	DL6AP	32	KB5FHK	57	PA3GAN	82	N4DCW
8	WI7P	33	KI7UNJ	58	N8RO	83	HB9GWJ
9	HA3FOK	34	LA9XGA	59	XE1ET	84	KB2YSI
10	K5ZM	35	F4BKV	60	KM4LAO	85	N0TEL
11	N6UA	36	N7AGF	61	VE1CWJ	86	VE3GOP
12	N9IP	37	JO2ASQ	62	SM3NRY	87	KI0KB
13	WY7AA	38	XE3DX	63	N4UFO	88	JM1CAX
14	W5PFG	39	K7TAB	64	VA3VGR	89	CU2ZG
15	AK8CW	40	KE0PBR	65	W1AW	90	K0FFY
16	AD0DX	41	KE0WPA	66	VA7LM	91	KG4AKV
17	DP0POL	42	N6DNM	67	PT2AP	92	AF5CC
18	WD9EWK	43	PR8KW	68	M1DDD	93	VE6WK
19	AD0HJ	44	AC0RA	69	DL4EA	94	W8MTB
20	ON4AUC	45	EB1AO	70	AA8CH	95	VE7PTN
21	KX9X	46	JK2XXK	71	N4AKV	96	DK9JC
22	KG5CCI	47	W7WGC	72	LU4JVE	97	K6VHF
23	ND0C	48	EA4NF	73	VE1VOX	98	N6UTC
24	DJ8MS	49	VK5DG	74	W8LR	99	PT9ST
25	F5VMJ	50	AA5PK	75	DF2ET	100	VO2AC

[ANS thanks @GridMasterMap for the above information]

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Need new satellite antennas?
Purchase an M2 LEO-Pack from the AMSAT Store!When you purchase through AMSAT, a portion of the proceeds goes towards
Keeping Amateur Radio in Space.
https://amsat.org/product-category/hardware/

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Changes to AMSAT-NA TLE Distribution for April 5, 2024

Two Line Elements or TLEs, often referred to as Keplerian elements or keps in the amateur community, are the inputs to the SGP4 standard mathematical model of spacecraft orbits used by most amateur tracking programs. Weekly updates are completely adequate for most amateur satellites. TLE bulletin files are updated daily in the first hour of the UTC day. New bulletin files will be posted immediately after reliable elements become available for new amateur satellites. More information may be found at https://www.amsat.org/keplerian-elements-resources/.

The following satellite has been removed from this week’s AMSAT-NA TLE distribution:

XW-2F NORAD Cat ID 40910 Decayed from orbit on or about 01 April 2024

[ANS thanks AMSAT Orbital Elements page for the above information]

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ARISS NEWS

Amateurs and others around the world may listen in on contacts between amateurs operating in schools and allowing students to interact with astronauts and cosmonauts aboard the International Space Station. The downlink frequency on which to listen is 145.800 MHz worldwide.

+ Recently Completed Contacts

Embry-Riddle Aeronautical University, Daytona Beach, FL, direct via NN4ER
The ISS callsign was NA1SS
The crewmember was Matthew Dominick KCØTOR
The ARISS mentor was AJ9N
Contact was successful: Wed 2024-04-03 15:22:17 UTC
Watch the contact at https://portal.stretchinternet.com/eraudaytona/portal.htm?eventId=754085&streamType=video
Congratulations to the Embry-Riddle Aeronautical University students, Matthew, NN4ER, mentor AJ9N!

Ryazan State Radio Engineering University, Ryazan, Russia, direct via RK3SWB (***)
The ISS callsign was RSØISS
The crewmember was Oleg Novitskiy
The ARISS mentor was RV3DR
Contact was successful for Wed 2024-04-03 12:30 UTC
Congratulations to the Ryazan State Radio Engineering University students, Oleg, RK3SWB, and mentor RV3DR!

Aznakaevsky District students, Tatarstan, Russia, direct via RC4P
The ISS callsign was RSØISS
The crewmember was Aleksandr Grebyonkin RZ3DSE
The ARISS mentor was RV3DR
Contact was successful: Thu 2024-04-04 10:10 UTC
Congratulations to the Aznakaevsky District students, Aleksandr, mentor RV3DR, and RC4P!

University College of the Immanuel Kant Baltic Federal University, Kaliningrad, Russia, direct via R2FDB
The ISS callsign was RSØISS
The crewmember was Marina Vasilevskaya
The ARISS mentor was RV3DR
Contact was successful: Thu 2024-04-04 13:19 UTC
Congratulations to the University College of the Immanuel Kant Baltic Federal University students, Marina, mentor RV3DR, and R2FDB!

Collège Théodore Monod, Gagny, France, direct via TM2ISS
The ISS callsign was OR4ISS
The crewmember was Matthew Dominick KCØTOR
The ARISS mentor was F6ICS
Contact was successful: Thu 2024-04-04 14:51:07 UTC
Congratulations to the Collège Théodore Monod students!

+ Upcoming Contacts

Volga State University, Russia, direct via TBD
The ISS callsign is presently scheduled to be RSØISS
The scheduled crewmember is Aleksandr Grebyonkin RZ3DSE
The ARISS mentor is RV3DR
Contact is go for Sun 2024-04-07 09:20 UTC

Tooele County School District, Tooele, UT, direct via W7CBL
The ISS callsign is presently scheduled to be NA1SS
The scheduled crewmember is Mike Barratt KD5MIJ
The ARISS mentor is AJ9N
Contact is go for: Mon 2024-04-08 17:45:07 UTC

ARTADEMIA, Milano, Italy, AND Scuola Secondaria I grado “A. Moro”, Ponte Lambro (CO), Italy, direct via IK1SLD
The ISS callsign is presently scheduled to be OR4ISS
The scheduled crewmember is Jeanette Epps KF5QNU
The ARISS mentor is IZ2GOJ
Contact is go for: Wed 2024-04-10 13:16:48 UTC

The crossband repeater continues to be active (145.990 MHz up {PL 67} & 437.800 MHz down). 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.

The packet system is also active (145.825 MHz up & down).

As always, if there is an EVA, a docking, or an undocking; the ARISS radios are turned off as part of the safety protocol.

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.

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

[ANS thanks Charlie Sufana, AJ9N, one of the ARISS operation team mentors for the above information]

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Upcoming Satellite Operations

EL, LIBERIA: Satellite activations include RS-44, IO-117, and QO-100
The Czech DXpedition Team (Petr/OK1BOA, Palo/OK1CRM, Petr/OK1FCJ,
Pavel/OK1GK, Ruda/OK2ZA, Ludek/OK2ZC, Karel/OK2ZI, and David/OK6DJ)
signs A8OK between April 9 and 16 from Liberia. QRV on 160-6m (CW,
SSB, RTTY, PSK, FT8/4) and via satellite. For more information see:
https://www.cdxp.cz and https://www.facebook.com/groups/1472348776313779
QSL via OK6DJ OQRS or via LoTW.

(Thanks to DXNL 2400 – April 3, 2024 DX Newsletter)

A growing number of satellite rovers are currently engaged in sharing their grid square activations on https://hams.at. By visiting the website, you gain easy access to comprehensive information about the operators responsible for activating specific grid squares. Additionally, you have the ability to assess the match score between yourself and a particular rover for a given pass, while also being able to identify the upcoming satellite passes that are accessible from your location.

[ANS thanks Ian Parsons, K5ZM, AMSAT Rover Page Manager, for the above information]

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Hamfests, Conventions, Maker Faires, and Other Events

AMSAT Ambassadors provide presentations, demonstrate communicating through amateur satellites, and host information tables at club meetings, hamfests, conventions, maker faires, and other events.

2024 CubeSat Developer’s Workshop
Tuesday April 23rd – Thursday April 25th
Cal Poly, San Luis Obispo, CA
https://www.cubesatdw.org/

Dayton Hamvention 2024
Friday May 17th – Sunday May 19th
Greene County Fairgrounds and Expo Center
120 Fairground Road
Xenia, OH 45385
https://hamvention.org

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Want to fly the colors on your own grid expedition?
Get an AMSAT car flag and other neat stuff from our Zazzle store!
25% of the purchase price of each product goes towards Keeping Amateur Radio in Space

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Satellite Shorts From All Over

+ NASA will launch three scientific-sounding rockets into the moon’s shadow on April 8 during a partial solar eclipse across North America, coinciding with a total solar eclipse in certain areas. The project, named Atmospheric Perturbations Around The Eclipse Path (APEP), aims to investigate how the sudden drop in sunlight and temperature during the eclipse affects Earth’s upper atmosphere. Named after the serpent deity from ancient Egyptian mythology, APEP will involve rockets launched from Wallops Flight Facility in Virginia. These rockets, equipped with secondary instruments, will measure changes in electric and magnetic fields, density, and temperature as they penetrate the ionosphere during the eclipse. Understanding these perturbations in the ionosphere is crucial for predicting disturbances that impact satellite communications and ensuring the smooth operation of our communication-dependent world. (ANS thanks Jamie Carter, Senior Contributor, Forbes, for the above information)

+ The final launch of United Launch Alliance’s Delta Heavy IV rocket is scheduled for April 9, marking the end of a 64-year legacy for the Delta family. The highly successful career of the Delta Heavy IV comes to a close as it launches a classified payload, NROL-70, on behalf of the U.S. National Reconnaissance Office (NRO). The NRO, responsible for the country’s surveillance satellites, maintains secrecy about the specifics of its missions. This final launch aims to enhance the NRO’s capabilities in providing intelligence to national decision-makers and supporting global humanitarian efforts. United Launch Alliance plans to retire both the Delta IV Heavy and the Atlas V to pave the way for its new Vulcan Centaur rocket, with the Atlas V scheduled for missions until 2029. The era of the Delta family concludes amidst a transition towards more advanced launch technologies and capabilities. (ANS thanks Brett Tingley, Managing Editor, Space.com, for the above information)

+ Despite facing numerous challenges, including malfunctioning temperature sensors and unused battery cells, Japan’s SLIM Moon lander has defied expectations by surviving a second lunar night, despite being in a precarious position with its thrusters pointed upward and solar arrays facing away from the Sun. The Japan Aerospace Exploration Agency (JAXA) received a signal from the lander indicating it had restarted after hibernating to avoid freezing temperatures on the Moon’s surface. Initially forced to shut down due to insufficient electricity generation from its solar cells, SLIM has persisted against the odds, reviving itself twice since its landing on January 19. Although not designed to endure the Moon’s harsh conditions, the lander has continued to function, prompting uncertainty about JAXA’s future plans for the resilient spacecraft after it successfully achieved its primary mission goal of a precise lunar landing within a 328-foot radius. (ANS thanks Passant Rabie, Gizmodo, for the above information)

+ China’s Queqiao-2 satellite successfully launched from the Wenchang Space Launch Site on March 20th, reaching lunar orbit after a perilune braking maneuver near the Moon’s surface on March 24th. Positioned to relay communications for future lunar missions, including Chang’e-4 and Chang’e-6, Queqiao-2’s orbit will be adjusted to facilitate these missions and support China’s ambitious lunar exploration program. Accompanying experimental satellites, Tiandu-1 and -2, also entered lunar orbit, conducting tests in communication and navigation. Queqiao-2’s strategic orbit placement in the Moon’s maria region holds significance for China’s lunar exploration history, including past probe landings fifteen years ago on March 1, 2009. China’s lunar missions, aiming to scout resources and establish a lunar base, signify a substantial endeavor parallel to NASA’s Artemis Program, which plans to establish a sustained presence on the Moon with international collaboration. (ANS thanks Matt Williams, Universe Today, for the above information)

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Join AMSAT today at https://launch.amsat.org/

In addition to regular membership, AMSAT offers membership to:

* Societies (a recognized group, clubs or organization).
* Primary and secondary school students are eligible for membership at one-half the standard yearly rate.
* Post-secondary school students enrolled in at least half-time status shall be eligible for the student rate for a maximum of 6 post-secondary years in this status.
* Memberships are available for annual and lifetime terms.

Contact info [at] amsat.org for additional membership information.

73 and remember to help Keep Amateur Radio in Space!

This week’s ANS Editor, Mitch Ahrenstorff, ADØHJ
ad0hj [at] amsat.org