Mitch Ahrenstorff

ANS-152 AMSAT News Service Weekly Bulletins

June 1, 2025 by Mitch Ahrenstorff

In this edition:

* Welcome SO-125! AMSAT-EA’s HADES-ICM Joins the OSCAR Fleet
* Your Voice, Your Board: Nominate Now for 2025 AMSAT Election
* Another Batch of CubeSatSim Kits Available Soon in AMSAT Store
* SpaceX Starship Ninth Flight Yields Data, Misses Reentry Goals
* Japanese Private Lander Resilience Nears Lunar Touchdown
* GridMasterMap Satellite Top 100 Rovers June 2025 Rankings
* Changes to AMSAT-NA TLE Distribution for May 30, 2025
* ARISS News
* AMSAT Ambassador Activities
* 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-152 AMSAT News Service Weekly Bulletins

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

DATE 2025 Jun 01

Welcome SO-125! AMSAT-EA’s HADES-ICM Joins the OSCAR Fleet

AMSAT-EA’s HADES-ICM satellite, a 1.5U PocketQube carrying an SDR-based FM and digital repeater payload for amateur radio use, was launched on March 14, 2025, aboard a Falcon 9 rocket during SpaceX’s Transporter-13 mission from Vandenberg Space Force Base in California.

Following deployment from the ION-SCV-017 Orbital Transfer Vehicle (OTV) on March 31, the satellite has been undergoing commissioning. The FM repeater is expected to be activated in June—initially on weekends, with plans to eventually transition to full-time (24/7) operation, as is currently the case with AMSAT-EA’s earlier HADES-R mission.

HADES-ICM also hosts an experimental payload from the University of Manchester’s Smart IR/Graphene Engineering Innovation Centre (GEIC), designed to test a very low-power active radiator under space conditions. Data from this experiment will be publicly transmitted via telemetry packets.

The satellite carries an FM and digital repeater payload, built on an improved SDR-based platform capable of transmitting up to 0.25W when battery conditions allow. This makes it accessible to stations using handheld antennas like the Arrow antenna. The coordinated uplink frequency is 145.875 MHz, and the downlink is 436.666 MHz. The repeater operates with an open squelch and does not require a subtone. The satellite has been cataloged with NORAD ID 63492.

At the request of AMSAT-EA, AMSAT hereby designates HADES-ICM as SO-125 (Spain-OSCAR 125). We congratulate AMSAT-EA, thank them for their continued contributions to the amateur satellite community, and wish them success with this and future missions!

[ANS thanks Drew Glasbrenner, KO4MA, AMSAT VP Operations / OSCAR Number Administrator for the above information]

Your Voice, Your Board: Nominate Now for 2025 AMSAT Election

AMSAT has officially opened the nomination period for its 2025 Board of Directors election, which will take place during the third quarter of the year.

Four director positions are set to expire in 2025. The current board members whose seats are up for election are:

Barry Baines, WD4ASW
Jerry Buxton, N0JY
Drew Glasbrenner, KO4MA
Zach Metzinger, N0ZGO

In addition to these four full Director roles, up to two Alternate Directors may also be elected to serve one-year terms.

To nominate a candidate, a written submission is required. Nominations must include the nominee’s name, call sign, and contact information, along with the same details for either five AMSAT members in good standing or one Member Society endorsing the candidate.

Nominations should be directed to the AMSAT Secretary:

Douglas Tabor, N6UA
1133 Verlan Way
Cheyenne, WY 82009

Per AMSAT’s bylaws, all nominations must follow the format specified by the Secretary. Doug Tabor has indicated that nominations will be accepted in both hard copy (via postal mail) and digital formats (including email or scanned documents). However, fax submissions are not permitted.

Email nominations should be sent to: dtabor [at] amsat [dot] org

All nomination petitions must be received by the Secretary no later than June 15th. After the submission deadline, the Secretary will confirm the eligibility of each candidate and the supporting members or societies, with final notification to candidates provided by the end of June.

[ANS thanks Doug Tabor, N6UA, AMSAT Secretary, for the above information]

Another Batch of CubeSatSim Kits Available Soon in AMSAT Store

A new batch of CubeSatSim Kits will be available for purchase in the AMSAT Store (https://www.amsat.org/product/cubesatsim-kit) on Thursday, June 5th, at 7 pm US Eastern time. Priced at $550 with shipping included for U.S. addresses, the CubeSatSim Kit offers a hands-on learning experience with no soldering and some assembly, making it ideal for both educational use and public demonstrations.

The CubeSatSim Kit includes:

Fully assembled and tested PCBs (Main, Solar, and Battery Boards)
Raspberry Pi Zero 2 with a Pi Camera and fully programmed micro-SD card, along with a fully programmed Raspberry Pi Pico WH
AMSAT logo Remove Before Flight tag switch
3D printed frame, nylon screws, and nuts, with a mini screwdriver included for assembly
Metal standoffs, stacking headers, and JST jumpers for stacking the PCBs and Pi Zero 2
10 solar panels with pre-soldered JST connectors and mounting tape
BME280 sensor (pressure, temperature, altitude, humidity) and MPU6050 IMU/gyro pre-soldered
Two 6″ SMA coax cables and two SMA antennas

The kit also comes with an instruction sheet, parts inventory, and links to online instructions. Assembly time is estimated to be under two hours, with scissors and the provided mini screwdriver.

Limited quantities of the CubeSatSim Kit will soon be available for purchase from the AMSAT Store. [Credit: Alan Johnston, KU2Y]

The v2.0 CubeSatSim features improvements over v1.2, such as an FM transceiver, Raspberry Pi Pico microcontroller, and RF command and control using DTMF or APRS packets. It can also be modified to function as a 500mW high altitude balloon payload.

For those interested in creating their own CubeSatSim, v2.0 blank PCB sets are available at the AMSAT Store for $35. These require additional components, which can be purchased for approximately $400 using the provided Bill of Materials.

Additional resources include:

Kit Instructions https://cubesatsim.org/kit
Kit Videos https://cubesatsim.org/kit-videos
Discussion Forum https://github.com/alanbjohnston/CubeSatSim/discussions
Quick Start Guide https://cubesatsim.org/qsg

For more information or to borrow a loaner CubeSat Simulator, contact Alan Johnston, AMSAT VP Educational Relations, at ku2y [at] arrl.net.

How to Order
Kits will be sold exclusively on the AMSAT Store website.
Only U.S. shipping addresses are eligible; orders with non-U.S. addresses will be refunded and closed.

About CubeSatSim
CubeSatSim is a low-cost satellite emulator powered by solar panels and batteries. It transmits UHF radio telemetry and can be expanded with additional sensors and modules, making it ideal for educational and public demonstrations.

[ANS thanks Alan Johnston, KU2Y, AMSAT Vice President Educational Relations for the above information]

SpaceX Starship Ninth Flight Yields Data, Misses Reentry Goals

SpaceX achieved partial success Tuesday with the ninth test flight of its massive Starship rocket, overcoming prior engine shutdown problems but discovering new issues during the vehicle’s return from space. Launched from the company’s Starbase facility in South Texas, the rocket reached space and achieved full engine cutoff for the first time using its current Block 2 design. However, the upper stage lost control during coast and reentry phases, tumbling and eventually disintegrating over the Indian Ocean.

The early stages of the mission went according to plan. All 33 Raptor engines on the Super Heavy booster ignited successfully, pushing the rocket skyward with twice the thrust of the Saturn V. After separation, the Starship upper stage ignited its own engines and reached a near-orbital trajectory. Elon Musk confirmed on X that the main engines completed their full burn and that the heat shield tiles remained intact during ascent—both major improvements over previous tests.

But soon after engine cutoff, SpaceX aborted a planned payload door test to deploy simulated Starlink satellites when the door failed to open. Minutes later, engineers reported a loss of tank pressure in the Starship’s attitude control system, causing the rocket to enter a slow spin. This compromised SpaceX’s ability to restart an engine for orbital maneuvering and made a controlled reentry impossible, eliminating the opportunity to gather key data on new heat shield tile configurations.

Starship Flight 9, a megarocket as tall as a 38-story building, lifts off from Starbase, Texas. [Credit: SpaceX / X]

The mission ended with the vehicle tumbling into the atmosphere and breaking apart during reentry. Despite the premature conclusion, SpaceX officials noted that they collected valuable data on a number of new systems. The company has been working to improve the durability of heat shield tiles, which are critical to the Starship’s goal of rapid reuse. Tuesday’s flight included multiple experimental tile designs and attachment methods that engineers are eager to analyze, even with the limited reentry data available.

There was also progress on the Super Heavy booster. For the first time, SpaceX reused a booster from a previous flight, testing modifications aimed at improving fuel efficiency and failure recovery during landing burns. Although the booster exploded near the end of its descent rather than splashing down intact, it flew well through much of its return. SpaceX believes data from this flight will inform future attempts to catch returning boosters with launch pad arms.

The latest setback underscores the challenge of developing a fully reusable heavy-lift rocket capable of missions to the Moon and Mars. SpaceX began 2025 with ambitious goals for up to 25 test flights, but that timeline now appears unlikely. However, Musk indicated that the next three Starships could launch within weeks of each other. Meanwhile, the Federal Aviation Administration is reviewing the flight, and engineers are analyzing telemetry to confirm whether new issues or previously known problems led to the vehicle’s demise. As SpaceX prepares for its next test, company officials remain cautiously optimistic.

Read the full article at: https://arstechnica.com/space/2025/05/spacex-may-have-solved-one-problem-only-to-find-more-on-latest-starship-flight/

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

The 2025 AMSAT President’s Club Coins Have Just Arrived!
Celebrating the 40th Anniversary of Amateur Radio on Human Spaceflight

Help Support GOLF and Fox Plus.
Join the AMSAT President’s Club today!

Japanese Private Lander Resilience Nears Lunar Touchdown

Japan’s ispace is aiming for a June 5 landing attempt with its Resilience lunar lander, now orbiting the moon. The spacecraft is targeting Mare Frigoris, a volcanic plain in the moon’s northern hemisphere. If the landing succeeds, it would mark the first moon touchdown by a private Japanese company and only the second lunar landing for Japan overall.

Resilience launched on January 15 aboard a SpaceX Falcon 9 rocket, sharing the ride with Firefly Aerospace’s Blue Ghost lander. Blue Ghost landed successfully on March 2, while Resilience took a longer, energy-efficient route to the moon, entering orbit on May 6. The mission follows ispace’s earlier attempt in 2023, which failed during descent after the lander misjudged the rim of a crater.

On May 22, ispace released a photo taken by Resilience showing the moon’s south polar region. The image, posted on social media, reveals a rugged cratered surface and drew attention for an optical illusion in which the craters can appear as raised bumps. While Resilience will land far from the south pole, the photo demonstrated the spacecraft’s ability to capture detailed lunar imagery.

Resilience captured a photo of the lunar south pole from orbit ahead of its scheduled June 5 landing. [Credit: ispace]

The mission carries five payloads, including a small rover named Tenacious developed by ispace’s European division. The rover is tasked with collecting lunar soil under a NASA contract awarded in 2020. It also carries a small artwork titled Moonhouse, created by Swedish artist Mikael Genberg and mounted to the rover’s front bumper.

Resilience joins a growing list of privately developed missions targeting the lunar surface. It follows earlier commercial efforts like Firefly’s Blue Ghost and Intuitive Machines’ Odysseus, which landed in early 2024. These missions contribute to broader scientific and technical goals for lunar exploration.

In addition to demonstrating landing capabilities, Resilience will test technologies designed for future ispace missions, including navigation, communications, and thermal control systems. Data from the lander and its payloads will inform development of ispace’s next-generation landers, which are intended for satellite servicing and lunar cargo delivery.

Read the full article at: https://www.space.com/astronomy/moon/private-japanese-moon-probe-snaps-photo-of-lunar-south-pole-ahead-of-june-5-landing

[ANS thanks the Mike Wall, Space.com, for the above information]

GridMasterMap Satellite Top 100 Rovers June 2025 Rankings

The June 2025 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: 2025-05-30

1	ND9M	26	KX9X	51	EB1AO	76	N4UFO
2	NJ7H	27	ON4AUC	52	AC0RA	77	PT2AP
3	JA9KRO	28	KG5CCI	53	W7WGC	78	AA8CH
4	UT1FG	29	N5BO	54	XE1ET	79	PT9BM
5	N5UC	30	K8BL	55	N6DNM	80	VE1VOX
6	DL6AP	31	KE4AL	56	EA4NF	81	FG8OJ
7	OE3SEU	32	KB5FHK	57	SM3NRY	82	YU0W
8	DP0POL	33	PA3GAN	58	DF2ET	83	N6UTC
9	F5VMJ	34	F4BKV	59	LU4JVE	84	AF5CC
10	K5ZM	35	VE3HLS	60	AA5PK	85	KI7UXT
11	WI7P	36	KI0KB	61	KI7QEK	86	JM1CAX
12	LU5ILA	37	JO2ASQ	62	SP5XSD	87	KJ7NDY
13	N6UA	38	KI7UNJ	63	F4DXV	88	PS8BR
14	HA3FOK	39	LA9XGA	64	DL4EA	89	N4DCW
15	N9IP	40	BA1PK	65	AD7DB	90	WA9JBQ
16	WY7AA	41	VA3VGR	66	VE1CWJ	91	KB2YSI
17	W5PFG	42	N7AGF	67	KE9AJ	92	K0FFY
18	AK8CW	43	VK5DG	68	BG7QIW	93	VE3GOP
19	DL2GRC	44	XE3DX	69	N8RO	94	N0TEL
20	AD0DX	45	JL3RNZ	70	VA7LM	95	KG4AKV
21	N4AKV	46	PR8KW	71	W8LR	96	DK9JC
22	AD0HJ	47	KE0WPA	72	KM4LAO	97	W8MTB
23	WD9EWK	48	KE0PBR	73	M1DDD	98	CU2ZG
24	ND0C	49	K7TAB	74	W1AW	99	K6VHF
25	DJ8MS	50	JK2XXK	75	HB9GWJ	100	VE7PTN

[ANS thanks @GridMasterMap for the above information]

Changes to AMSAT-NA TLE Distribution for May 30, 2025

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/.

NOTICE: In an effort to minimize confusion between sources of two line element sets, AMSAT is adopting the convention of listing the USSF/NORAD Satellite Catalog name first, followed by any secondary name or names in parentheses. For example, “POEM 4 (BGS ARPIT)” was added recently where “POEM 4” is the name that appears in the US Space Force Satellite Catalog, and “BGS ARPIT” is the name best known within the amateur satellite community. Expect name changes for affected satellites in the coming weeks as this change is fully implemented.

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

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

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

Royal Moroccan Air Academy, Marrakech, Morocco, direct via CN8ERA
The ISS callsign was OR4ISS
The scheduled crewmember was Nichole Ayers KJ5GWI
The ARISS mentor was IN3GHZ
Contact was successful: Wed 2025-05-28 12:55:36 UTC

Yonezawa 5th Junior High School, Yonezawa, Japan, direct via 8N7Y5JH
The ISS callsign was OR4ISS
The scheduled crewmember was Takaya Onishi KF5LKS
The ARISS mentor was 7M3TJZ
Contact was successful: Thu 2025-05-29 09:23:02 UTC
Watch the livestream at https://www.youtube.com/live/sxpw07oNZSg

Atkarsk, Saratov region, Russia, direct via TBD
The ISS callsign was RSØISS
The scheduled crewmember was Sergey Ryzhikov
The ARISS mentor was RV3DR
Contact was successful: Thu 2025-05-29 13:55 UTC

Starominskiy District, Russia, direct via TBD
The ISS callsign was RSØISS
The scheduled crewmember was Kirill Peskov
The ARISS mentor was RV3DR
Contact was successful: Sat 2025-05-31 10:35 UTC

+ Upcoming Contacts

Technical University of Dublin, Dublin, Ireland, direct via EI1ISS
The ISS callsign is presently scheduled to be OR4ISS
The scheduled crewmember is Takaya Onishi KF5LKS
The ARISS mentor is EI8BP
Contact is go for: Wed 2025-06-04 12:07:37 UTC

Many times a school may make a last minute decision to do a Livestream or run into a last minute glitch requiring a change of the URL but we at ARISS may not get the URL in time for publication. You can always check https://live.ariss.org/ to see if a school is Livestreaming.

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]

AMSAT Ambassador Activities

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

AMSAT Ambassador Clint Bradford, K6LCS, says,

“Think a 75-minute presentation on “working the easy satellites” would be appropriate for your club or event? Let me know by emailing me at k6lcsclint (at) gmail (dot) com or calling me at 909-999-SATS (7287)!”

Clint has NEVER given the exact same show twice: EACH of the 150+ presentations so far has been customized/tailored to their audiences.

Scheduled Events

Rochester Amateur Radio Association Hamfest 2025 – June 21st, 2025
Barnard Fire Department Park
410 Maiden Lane
Rochester, NY 14616
KB2YSI
https://rochesterham.org/hamfest.htm

Greater Louisville Hamfest – September 6th, 2025
Paroquet Springs Conference Centre
395 Paroquet Springs Drive
Shepherdsville, KY 40165
W4FCL
https://louisvillehamfest.wixsite.com/louisvillehamfest

43rd Annual AMSAT Space Symposium & Annual General Meeting – October 16th thru 19th, 2025
Holiday Inn & Suites Phoenix Airport North
1515 North 44th Street
Phoenix, Arizona 85008
https://www.amsat.org/2025-symposium/

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

For more information go to: https://www.amsat.org/ambassador/

[ANS thanks Bo Lowrey, W4FCL, Director – AMSAT Ambassador Program, for the above information]

AMSAT Remove Before Flight Key Tags Now Available
Yes, These are the Real Thing!

Your $20 Donation Goes to Help Fly a Fox-Plus Satellite
Includes First Class Postage (Sorry – U.S. Addresses Only)
Order Today at https://www.amsat.org/product/amsat-remove-before-flight-keychain

Satellite Shorts From All Over

+ Congratulations are in order for John, AB5SS, who has earned GridMaster Award #72 for completing satellite contacts in all 488 Maidenhead grid squares across the contiguous United States. The GridMaster Award is one of the highest honors in amateur satellite operations, recognizing exceptional dedication and achievement. First created by the Star Comm Group in 2014 and supported by Damon Runion, WA4HFN, and Rick Tillman, WA4NVM, the award is now managed by AMSAT for the benefit of the entire community. To date, only a small number of operators have reached this milestone, highlighting the rarity and significance of the accomplishment. Earning GridMaster status requires years of persistence, careful tracking, and often the support of skilled satellite rovers. More information on the GridMaster Award, including how to apply, is available at https://www.amsat.org/gridmaster/. (ANS thanks Bruce Paige, KK5DO, AMSAT Director of Contests and Awards for the above information)

+ Tom Schuessler, N5HYP, is featured in the June 2025 QST “Member Spotlight” for his outstanding contributions to amateur radio satellite operations and AMSAT. A lifelong space enthusiast, Tom was encouraged by the late Keith Pugh, W5IU (SK), to explore satellites and began operating in 2010 using an Icom IC-W32A and Arrow Antenna. He quickly became hooked and joined AMSAT, later serving as an AMSAT Ambassador, giving presentations at clubs, hamfests, and virtual events like the QSO Today Virtual Ham Expo. Tom also hosts two AMSAT-focused nets in the Dallas/Fort Worth area, helping build local interest in satellite communications. One of his proudest moments was a spontaneous QSO with astronaut Woody Hoburg, KB3HTZ, aboard the ISS in 2023. His passion and outreach have made him a key figure in promoting AMSAT and inspiring others to discover the excitement of working satellites. (ANS thanks Barry Baines, WD4ASW, AMSAT Board of Directors, for the above information)

+ The European Space Agency’s ACES mission has launched the most precise atomic clock ever sent to space, with the goal of improving how we measure elevation on Earth. This effort addresses real-world issues like the infamous misalignment of a German-Swiss bridge caused by differing sea level baselines. ACES was installed on the International Space Station’s Columbus module on April 25, 2025, using the station’s robotic arm. By linking ACES to the most accurate ground-based clocks, scientists can compare how time ticks across the planet—since time passes more slowly in stronger gravity, this allows geodesists to map Earth’s gravitational field with centimeter-level precision. The clock network will eventually make elevation measurements more accurate worldwide, including in poorly surveyed regions like Africa and South America. Though ACES is just a first step, it paves the way for a future system of even more precise space-based clocks that could revolutionize infrastructure planning, sea level monitoring, and geophysical research. (ANS thanks Sophia Chen, MIT Technology Review, for the above information)

+ Starfish Space is preparing to launch its second mission, Otter Pup 2, on SpaceX’s upcoming Transporter-14 rideshare flight, where it will attempt to dock with a D-Orbit ION satellite already aboard the same launch. Unlike traditional spacecraft, Otter Pup 2 uses an electrostatic capture mechanism, allowing it to dock with unmodified satellites by attaching to flat panels. The mission aims to demonstrate rendezvous and docking technologies that will support future servicing missions, such as life extension and orbital debris inspection, for both commercial and government clients. A similar effort in 2023 failed due to a malfunction in the launch partner’s vehicle, though Otter Pup was still able to approach a different target. This mission will more realistically simulate the challenges of space servicing, with Otter Pup 2 traveling long distances before performing proximity operations and multiple dockings. Starfish hopes to prove that its technology is safe, flexible, and viable, building confidence in satellite servicing amid growing demand and regulatory interest. (ANS thanks Jeff Foust, SpaceNews, for the above information)

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
mahrenstorff [at] amsat.org

ANS-124 AMSAT News Service Weekly Bulletins

May 4, 2025 by Mitch Ahrenstorff

In this edition:

* AMSAT Prepares for Major Presence at 2025 Dayton Hamvention
* Amazon Kicks Off Kuiper Network with Ambitious First Satellite Launch
* Europe’s Vega C Rocket Launches Satellite to Map Forest Health
* GridMasterMap Satellite Top 100 Rovers May 2025 Rankings
* Changes to AMSAT-NA TLE Distribution for May 2, 2025
* ARISS News
* Upcoming Satellite Operations
* AMSAT Ambassador Activities
* Satellite Shorts From All Over

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-124 AMSAT News Service Weekly Bulletins

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

DATE 2025 May 04

AMSAT Prepares for Major Presence at 2025 Dayton Hamvention

AMSAT will return to the 2025 Dayton Hamvention with a strong lineup of events, volunteer opportunities, and social gatherings. The event is set for May 16–18 at the Greene County Fairgrounds in Xenia, Ohio, where AMSAT will again serve as one of the larger exhibitors, occupying booths 1007–1010 and 1107–1110 in Building 1. Alongside its booth activities, AMSAT will host a variety of forums and after-hours events designed to engage and inform amateur radio enthusiasts.

In preparation for Hamvention, AMSAT is actively seeking volunteers to help staff the booth. Around 20 volunteers assisted during last year’s event, providing a crucial link between AMSAT and the broader amateur radio community. Whether attendees can offer a few hours or the entire weekend, AMSAT welcomes all who are interested. Those wishing to volunteer or request more information can contact Phil Smith, W1EME, via email at w1eme [at] astrocom [dot] net.

The AMSAT Forum is scheduled for Saturday, May 17, from 1:35 PM to 3:10 PM EDT in Forum Room 2. Attendees are encouraged to arrive early and catch the ARISS (Amateur Radio on the International Space Station) Forum at 12:40 PM in the same room. The forum will provide updates on current projects and future plans within the AMSAT community.

Keith Baker, KB1SF and Mark Johns, KØJM field questions at the AMSAT’s Beginner’s Corner. [Credit: Fairly Amused / YouTube]

The 16th annual TAPR/AMSAT Banquet will take place on Friday, May 16, at 6:30 PM EDT at the Kohler Presidential Banquet Center in Kettering, Ohio. This year’s keynote speaker will be Phil Karn, KA9Q, who will discuss developments in his “ka9q-radio” software suite. Tickets are $70 and must be purchased in advance through the AMSAT Store by Monday, May 12, at 5:00 PM EDT. Seating is limited based on the number of meals reserved with the caterer, and no tickets will be sold or distributed at the AMSAT booth.

On Thursday, May 15, AMSAT will host its annual informal gathering at Tickets Pub & Eatery in Fairborn, OH, from 6:00 PM to 8:00 PM. No program or reservations are required—just food, drinks, and conversation. All are welcome to attend and enjoy a relaxed evening ahead of the Hamvention weekend. Tickets offers a wide menu of Greek and American fare along with beverages from the bar.

As the central player in amateur satellite operations, AMSAT’s presence at Hamvention continues to reflect its leadership in advancing space-based amateur radio. From technical presentations to social events and volunteer engagement, AMSAT offers multiple ways for newcomers and seasoned operators alike to get involved and connect with the broader ham radio community.

[ANS thanks AMSAT for the above information]

Amazon Kicks Off Kuiper Network with Ambitious First Satellite Launch

Amazon launched the first 27 satellites for its Kuiper broadband internet constellation on Monday, marking the start of its long-anticipated challenge to SpaceX’s Starlink network. The satellites lifted off aboard a United Launch Alliance (ULA) Atlas V rocket at 7 p.m. EDT (2300 UTC) from Cape Canaveral Space Force Station in Florida, after an initial launch attempt earlier this month was delayed by weather.

The launch is part of Amazon’s $10 billion Project Kuiper, which aims to deploy 3,236 satellites into low-Earth orbit to deliver global broadband service. Unveiled in 2019, the initiative targets consumers, businesses, and governments, a customer base already served by Starlink’s rapidly growing presence in the satellite internet market. The service is also being positioned as a vital solution for rural and underserved areas.

Amazon’s Kuiper program has experienced more than a year of delays, pushing the inaugural deployment well past its original target of early 2024. Under a Federal Communications Commission mandate, Amazon must launch half of its satellite constellation—1,618 satellites—by mid-2026. Analysts expect the company may need to seek an extension due to its late start.

ULA’s Atlas V readies to launch Amazon’s first Kuiper satellites from Cape Canaveral. [Credit: ULA / YouTube]

All 27 satellites from Monday’s launch are functioning normally, according to Amazon CEO Andy Jassy, who confirmed the status on social media nearly seven hours after liftoff. The confirmation marks a key milestone in the project. Amazon expects to begin customer service later this year, assuming deployment and testing continue on schedule.

Amazon could launch up to five additional Kuiper missions in 2025, according to ULA CEO Tory Bruno. The company has indicated that initial service could begin with as few as 578 satellites, enabling limited coverage in northern and southern regions, with global service expanding as more satellites are deployed. Amazon’s experience in consumer products and cloud infrastructure is seen by executives as a potential advantage over competitors.

SpaceX, which has launched over 8,000 Starlink satellites since 2019, currently leads the market with more than 5 million users in 125 countries. Despite SpaceX’s head start, Amazon founder Jeff Bezos remains optimistic about Kuiper’s future. “There’s insatiable demand for internet,” Bezos said in January. “There’s room for lots of winners.”

Read the full article at: https://www.reuters.com/business/media-telecom/amazon-launches-first-kuiper-internet-satellites-taking-starlink-2025-04-28/

[ANS thanks the Joey Roulette, Reuters, for the above information]

The 2025 AMSAT President’s Club Coins Have Just Arrived!
Celebrating the 40th Anniversary of Amateur Radio on Human Spaceflight

Help Support GOLF and Fox Plus.
Join the AMSAT President’s Club today!

Europe’s Vega C Rocket Launches Satellite to Map Forest Health

The European Space Agency (ESA) successfully launched its Biomass satellite aboard a Vega C rocket on April 29, advancing both Earth science research and Europe’s independent access to space. The launch took place at 5:15 a.m. Eastern Daylight Time (0915 UTC) from the Guiana Space Centre in French Guiana. The satellite separated from the rocket’s Avum upper stage nearly an hour later, entering a sun-synchronous orbit at an altitude of 666 kilometers.

Built by Airbus Defence and Space, the 1,250-kilogram Biomass satellite is part of ESA’s Earth Explorer program. Its central feature is a P-band synthetic aperture radar (SAR), designed to measure the amount of carbon stored in Earth’s forests by penetrating the tree canopy and mapping forest biomass. Simonetta Cheli, ESA’s director of Earth observation programs, likened the technology to “a medical scan of the forest” during a prelaunch briefing.

Biomass is designed for a 5.5-year mission. The first 18 months will focus on tomographic radar mapping of forest interiors, followed by four years of interferometric observations to track changes in forest height and biomass. Beyond forests, the satellite will also observe glaciers and deserts, using the radar’s ability to penetrate ice and sand. ESA plans to collaborate with NASA, sharing data with the forthcoming NISAR satellite, which operates a similar SAR system at higher frequencies.

ESA’s Biomass satellite will map forest carbon with P-band radar from low Earth orbit. [Credit: ESA/ATG MediaLab]

The satellite’s radar system required new advancements in radio-frequency electronics due to the use of lower-frequency P-band waves. Airbus official Justin Byrne noted that engineers had to develop custom amplifiers and supporting electronics. The radar’s 12-meter deployable antenna, built by L3Harris, will begin unfolding a few days after launch in a process expected to take four days.

This mission marks Vega C’s second launch since returning to flight in December 2024, following a 2022 failure during the VV22 mission. ESA and Arianespace officials emphasized the extensive reviews and oversight applied to the rocket to ensure reliability. “We are scrutinizing, very closely, all of the launcher for any anomalies or weak points,” said Toni Tolker-Nielsen, ESA’s director of space transportation, who added that this level of review will continue through five launches.

With Vega C and the upcoming Ariane 6 both operational, European officials underscored the strategic significance of sovereign launch capability. Arianespace CEO David Cavaillolès highlighted the importance of ending reliance on foreign providers like SpaceX. Arianespace has conducted two launches so far in 2025 and plans six more by year’s end. Responsibility for Vega C operations will soon shift to Avio, the rocket’s manufacturer, with the transition described as proceeding smoothly.

Read the full article at: https://spacenews.com/vega-launches-biomass-satellite/

[ANS thanks the Jeff Foust, SpaceNews, for the above information]

GridMasterMap Satellite Top 100 Rovers May 2025 Rankings

The May 2025 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: 2025-05-01

1	ND9M	26	KX9X	51	AC0RA	76	N4UFO
2	NJ7H	27	ON4AUC	52	W7WGC	77	PT2AP
3	JA9KRO	28	KG5CCI	53	N6DNM	78	AA8CH
4	UT1FG	29	N5BO	54	JL3RNZ	79	PT9BM
5	N5UC	30	K8BL	55	EA4NF	80	VE1VOX
6	DL6AP	31	KE4AL	56	SM3NRY	81	FG8OJ
7	OE3SEU	32	KB5FHK	57	DF2ET	82	YU0W
8	WI7P	33	F4BKV	58	XE1ET	83	KJ7NDY
9	DP0POL	34	VE3HLS	59	LU4JVE	84	N6UTC
10	K5ZM	35	PA3GAN	60	KI7QEK	85	AF5CC
11	F5VMJ	36	KI0KB	61	AA5PK	86	KI7UXT
12	N6UA	37	JO2ASQ	62	SP5XSD	87	PS8BR
13	LU5ILA	38	KI7UNJ	63	F4DXV	88	WA9JBQ
14	HA3FOK	39	LA9XGA	64	AD7DB	89	KB2YSI
15	N9IP	40	BA1PK	65	VE1CWJ	90	N4DCW
16	WY7AA	41	VA3VGR	66	KE9AJ	91	JM1CAX
17	W5PFG	42	N7AGF	67	BG7QIW	92	K0FFY
18	AK8CW	43	VK5DG	68	DL4EA	93	VE3GOP
19	DL2GRC	44	XE3DX	69	N8RO	94	N0TEL
20	AD0DX	45	KE0WPA	70	KM4LAO	95	KG4AKV
21	N4AKV	46	PR8KW	71	W8LR	96	W8MTB
22	AD0HJ	47	KE0PBR	72	VA7LM	97	CU2ZG
23	WD9EWK	48	K7TAB	73	M1DDD	98	VE7PTN
24	ND0C	49	JK2XXK	74	W1AW	99	DK9JC
25	DJ8MS	50	EB1AO	75	HB9GWJ	100	K6VHF

[ANS thanks @GridMasterMap for the above information]

Changes to AMSAT-NA TLE Distribution for May 2, 2025

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

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

ARISS NEWS

+ Recently Completed

Wireless Institute of Australia AGM and Technical Expo, Bendigo, Victoria, Australia, telebridge via K6DUE
The ISS callsign was NA1SS
The scheduled crewmember was Takaya Onishi KF5LKS
The ARISS mentor was VK4KHZ
Contact was successful: Sat 2025-05-03 11:12:24 UTC

+ Upcoming Contacts

IISS Copernico Pasoli, Verona, Italy, telebridge via K6DUE
The ISS callsign is presently scheduled to be NA1SS
The scheduled crewmember is Jonathan (Jonny) Kim KJ5HKP
The ARISS mentor is IZ2GOJ
Contact is go for: Mon 2025-05-05 09:36:54 UTC

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

A special ARISS-Russia SSTV event is on the ISS schedule beginning May 5 at 12:00 UTC. This is a celebration commemorating a regional holiday.

Monitor 145.800 MHz for potential activity during passes. This will impact the availability of APRS digipeater.

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]

Upcoming Satellite Operations

None currently posted.

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]

AMSAT Ambassador Activities

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

AMSAT Ambassador Clint Bradford, K6LCS, says,

Clint has NEVER given the exact same show twice: EACH of the 150+ presentations so far has been customized/tailored to their audiences.

Scheduled Events

Dayton Hamvention – May 16th thru 18th, 2025
Greene County Fair and Expo Center
210 Fairground Road
Xenia, OH 45385
https://www.amsat.org/amsat-at-hamvention-2025/
https://hamvention.org/

Rochester Amateur Radio Association Hamfest 2025 – June 21, 2025
Barnard Fire Department Park
410 Maiden Lane
Rochester, NY 14616
KB2YSI
https://rochesterham.org/hamfest.htm

For more information go to: https://www.amsat.org/ambassador/

[ANS thanks Bo Lowrey, W4FCL, Director – AMSAT Ambassador Program, for the above information]

AMSAT Remove Before Flight Key Tags Now Available
Yes, These are the Real Thing!

Your $20 Donation Goes to Help Fly a Fox-Plus Satellite
Includes First Class Postage (Sorry – U.S. Addresses Only)
Order Today at https://www.amsat.org/product/amsat-remove-before-flight-keychain

Satellite Shorts From All Over

+ Juan Carlos, CO8TW, reports that a WhatsApp channel titled Satellites for Hams…!!! now has 338 active subscribers. The channel shares regular updates and information of interest to amateur radio satellite operators, including how to become a member of AMSAT. It can be accessed directly at: https://whatsapp.com/channel/0029VaIMu2D4IBhG7yR2Tb2d. To join, download the free WhatsApp app from your device’s app store—App Store for iPhone or Google Play Store for Android—or access it from your computer at https://web.whatsapp.com. WhatsApp, owned by Meta, is a global messaging platform that supports text, voice, video, and multimedia sharing. It remains a popular tool among hams for coordinating and exchanging satellite-related information in real time. (ANS thanks Juan Carlos, CO8TW, for the above information)

+ Firefly Aerospace’s Alpha rocket suffered a launch failure early Tuesday after lifting off from Vandenberg Space Force Base in California. Roughly two-and-a-half minutes into flight, the rocket’s first stage separated, but a bright white vapor cloud appeared—possibly an explosion—just before the upper stage ignited. Though the upper stage’s Lightning engine fired for more than six minutes, damage to its nozzle significantly reduced thrust, preventing the rocket from reaching orbital velocity. The mission, which was carrying Lockheed Martin’s LM-400 tech demo satellite, ended with the rocket and payload falling into the Pacific Ocean. This marks another setback for Alpha, which has now only achieved two fully successful missions out of six. Despite contract wins and plans for a more capable vehicle, Firefly must improve Alpha’s reliability to compete in the crowded small-to-medium launch market. (ANS thanks Ars Technica for the above information)

+ NOAA has announced that satellites NOAA 15, 18, and 19 will be reclassified as end-of-life effective June 16, 2025. These polar-orbiting weather satellites are widely used by amateur radio enthusiasts and RTL-SDR hobbyists to receive APT and HRPT imagery. The news was first reported by Carl Reinemann on the USradioguy.com blog, where he clarified that despite the end-of-life designation, transmissions will continue. NOAA has confirmed that signals will still be broadcast on a “data of opportunity” basis, meaning they are no longer intended for operational or safety-critical use but remain suitable for hobbyist reception. NOAA also stated that no ground intervention will be provided for future sensor or hardware failures. Should any critical malfunctions occur, the satellites may be decommissioned, as was nearly the case with NOAA 15’s scan motor, which previously failed and later resumed function under unclear circumstances. (ANS thanks RTL-SDR.com and USRadioguy.com for the above information)

+ A Soviet spacecraft originally intended for Venus, Cosmos 482, is expected to make an uncontrolled reentry into Earth’s atmosphere around May 9–10, after orbiting the planet for over 53 years. Launched in March 1972, the mission failed when the upper stage of its Soyuz booster cut off prematurely, stranding the Venus lander in Earth orbit. The descent module—designed to endure Venus’ harsh atmosphere—remains intact and may potentially survive Earth reentry due to its heavy thermal shielding. Satellite tracker Marco Langbroek has modeled its descent and predicts it could hit the ground or ocean at speeds exceeding 145 miles per hour. Although the risk to people or infrastructure is low, the lander’s size and mass make its reentry comparable to a small meteorite impact. Its fiery return is a rare and fascinating reminder of Cold War-era space exploration still orbiting above us. (ANS thanks Space.com for the above information)

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

In addition to regular membership, AMSAT offers membership to:

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
mahrenstorff [at] amsat.org

ANS-096 AMSAT News Service Weekly Bulletins

April 6, 2025 by Mitch Ahrenstorff

In this edition:

* Fram2 Mission Blends Polar Orbit, Amateur Radio, and Private Spaceflight
* Spectrum’s Fiery Debut Marks Bold First Step for Isar Aerospace
* LuGRE Demonstrates Viability of GPS Navigation on the Moon
* VUCC & DXCC Satellite Standings for April 2025
* Changes to AMSAT-NA TLE Distribution for April 4, 2025
* ARISS News
* Upcoming Satellite Operations
* AMSAT Ambassador Activities
* Satellite Shorts From All Over

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-096 AMSAT News Service Weekly Bulletins

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

DATE 2025 Apr 06

Fram2 Mission Blends Polar Orbit, Amateur Radio, and Private Spaceflight

SpaceX launched the Fram2 private astronaut mission on Monday, March 31st, marking a new chapter in commercial spaceflight. The Crew Dragon spacecraft Resilience carried four private astronauts into a polar orbit—making it the first crewed mission to fly directly over both the North and South Poles. After three and a half days in orbit, the spacecraft splashed down safely in the Pacific Ocean off the coast of California on Friday, April 4th.

One of the mission’s standout features was Fram2Ham, an amateur radio initiative led by mission pilot Rabea Rogge (LB9NJ/KD3AID), a robotics researcher from Germany. On April 1st, just hours after reaching orbit, Rogge conducted the first amateur radio contact ever made from a Crew Dragon spacecraft. Speaking on 437.550 MHz, she answered questions from students at Technische Universität Berlin (TU Berlin) during a live-streamed session focused on STEM topics.

The mission also featured slow-scan television (SSTV) transmissions sent by Rogge using an ICOM IC-705 transceiver. Amateur radio operators around the world tuned in and successfully decoded images sent from orbit. The images were submitted to an online gallery maintained by ARISS (Amateur Radio on the International Space Station), with over 1,100 general entries and more than 110 from student STEM teams submitted during the mission.

Framonauts Rabea Rogge and Jannicke Mikkelsen pictured inside Crew Dragon *Resilience*. [Credit: SpaceX / Fram2]

The Fram2Ham experiment demonstrated that meaningful amateur radio operations can be carried out from commercial crew vehicles using compact, battery-powered equipment. ARISS called the effort a breakthrough for ham radio in human spaceflight, noting that the success of Fram2Ham opens the door to future communications experiments aboard non-governmental orbital missions and commercial space stations.

Fram2 also included operational tests with future exploration goals in mind. Following splashdown, the astronauts exited the spacecraft without external help to simulate autonomous egress procedures that may be necessary on lunar or Martian surfaces. The hands-on, self-directed nature of the Fram2Ham project paralleled this emphasis on independence, with Rogge managing transmissions without ground crew assistance.

The Fram2 crew shared stunning views of Earth from the SpaceX Dragon capsule in videos posted on X. [Credit: Framonaut Chun Wang]

The mission saw strong participation from the amateur radio community. The Live OSCAR Status Page on the AMSAT web site received a record 496 reception reports during the mission, more observations than any other spacecraft in a 4-day period since the page’s inception. Although several operators attempted to receive signals during the reentry phase, none succeeded, as the capsule entered a plasma blackout. Still, engagement across the amateur radio world was described as historic.

Fram2 was organized and funded by Chun Wang, a Malta-based cryptocurrency entrepreneur originally from China, who also served as the mission commander. He was joined by Rogge, Norwegian cinematographer Jannicke Mikkelsen as vehicle commander, and Australian polar explorer Eric Philips as mission specialist and medical officer. The team conducted 22 research experiments in orbit, including medical imaging, materials testing, and biological studies.

As the first crewed mission to reach a 90-degree orbital inclination, Fram2 provided rare views of polar auroras and remote Arctic landscapes. For Wang, the mission fulfilled a childhood curiosity about the polar regions; for the broader space community, it demonstrated how private spaceflight can combine scientific research, technical innovation, and public outreach—including a successful amateur radio experiment that brought signals from orbit to Earthbound listeners around the globe.

[ANS thanks SpaceNews, ARISS, and Joe Fitzgerald, KM1P, for the above information]

Spectrum’s Fiery Debut Marks Bold First Step for Isar Aerospace

The inaugural flight of Isar Aerospace’s Spectrum rocket ended just 40 seconds after liftoff on Sunday, March 30th, with the vehicle crashing into the sea off Norway’s Andøya Spaceport. The rocket, intended to be the first orbital-class launcher developed by a private European company, lost control shortly after takeoff and triggered its flight termination system before plummeting into the Arctic waters in a fiery explosion.

Isar Aerospace officials acknowledged the failure but emphasized the value of the flight. “Today, we know twice as much about our launch system as yesterday before launch,” said Daniel Metzler, Isar’s co-founder and CEO. The company released multiple replays of the short flight, including a drone-captured video, underscoring a level of transparency uncommon in the space launch industry. Metzler praised the team’s achievement, framing the test as a crucial step forward in a long-term development process.

The Spectrum rocket lifted off at 1030 UTC, generating over 150,000 pounds of thrust from its nine engines fueled by liquid propane and liquid oxygen. Trouble emerged about 15 seconds into the flight as the rocket began to oscillate and tumble, eventually flipping upside-down. With the rocket’s propellant tanks still nearly full, its impact created a massive fireball visible from the snowy Andøya landscape. No injuries were reported, and the launch pad remained intact.

Isar Aerospace’s first Spectrum rocket climbs away from Andøya Spaceport in Norway. [Credit: Isar Aerospace/NASASpaceflight.com]

The mission carried no commercial payload, a deliberate decision given the anticipated risk. The goal was to gather performance data during Spectrum’s first powered flight. Officials at Isar Aerospace had long signaled that reaching orbit on the first attempt was unlikely. By preserving the launch site and capturing valuable telemetry, the company achieved what it described as a successful test despite the dramatic conclusion.

Founded in 2018, Isar Aerospace has raised over 400 million euros in private and institutional funding, making it the most well-capitalized among Europe’s emerging private launch companies. Supporters include the European Space Agency, Germany’s government, and the NATO Innovation Fund. ESA director general Josef Aschbacher praised the flight as a vital learning opportunity, while German vice chancellor Robert Habeck hailed the launch as evidence of Europe’s growing technological independence.

Isar is already building its next two rockets and plans to iterate quickly, following a strategy modeled after SpaceX’s fast-paced test-and-repair cycle. While the loss of the first Spectrum rocket marks a setback, company officials maintain that success lies not in perfection but in progress. “We’re super happy,” Metzler said. “Now it’s time to analyze all data, learn, iterate, and be back on the launch pad as soon as possible.”

“We’re super happy,” Metzler said in a press call after Sunday’s flight. “It’s a time for people to be proud of, and for Europe, frankly, also to be proud of.”

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

The 2025 AMSAT President’s Club Coins Have Just Arrived!
Celebrating the 40th Anniversary of Amateur Radio on Human Spaceflight

Help Support GOLF and Fox Plus.
Join the AMSAT President’s Club today!

LuGRE Demonstrates Viability of GPS Navigation on the Moon

NASA and the Italian Space Agency have achieved a historic milestone with the successful conclusion of the Blue Ghost mission, which delivered the Lunar GNSS Receiver Experiment (LuGRE) to the Moon. LuGRE became the first technology demonstration to acquire and track Earth-based navigation signals from the lunar surface, proving that Global Navigation Satellite System (GNSS) signals—including GPS and Galileo—can be used to support autonomous navigation on the Moon.

The ability to receive and process GNSS signals approximately 225,000 miles from Earth opens new possibilities for future lunar and deep space missions. By reducing reliance on Earth-based tracking, missions like NASA’s Artemis program could benefit from real-time, onboard navigation systems similar to those used on Earth.

LuGRE was delivered by Firefly Aerospace’s Blue Ghost lander, which touched down on the Moon on March 2nd. Science operations began shortly after landing, and by 2 a.m. EST on March 3rd, the LuGRE payload had successfully acquired and tracked GNSS signals from the Moon’s surface, achieving a navigation fix and marking a first in space exploration.

Artist’s illustration of the three main GNSS records set by the LuGRE payload on Blue Ghost. [Credit: NASA/Dave Ryan]

The Blue Ghost mission operated for 14 days, completing its objectives before the onset of lunar night. During that time, LuGRE functioned in near-continuous mode, gathering valuable data and demonstrating the viability of GNSS-based navigation on the Moon. The mission also marked a milestone for the Italian Space Agency, as LuGRE was its first hardware to operate successfully on the lunar surface.

In addition to its surface accomplishments, LuGRE set multiple records during its journey. On January 21st, it acquired GNSS signals at a record-breaking altitude of 209,900 miles from Earth—surpassing the previous high set by NASA’s Magnetospheric Multiscale Mission. The payload later received signals from 243,000 miles away in lunar orbit on February 20th, confirming that GNSS signals can be used not only on the Moon but throughout cislunar space.

LuGRE was developed through a partnership involving NASA’s Goddard Space Flight Center, the Italian Space Agency, Italian industry partner Qascom, and Politecnico di Torino. The mission’s success demonstrates the growing potential of Earth-based navigation systems to support autonomous space exploration well beyond Earth orbit.

[ANS thanks the Katherine Schauer, NASA, for the above information]

VUCC & DXCC Satellite Standings for April 2025

VUCC Satellite Award/Endorsement Change Summary for March 01, 2025 to April 01, 2025

Callsign	03/01/2025	04/01/2025
K8DP	1737	1738
W8LR	897	900
E70A	504	796
WD9EWK (DM43)	737	774
IK7FMQ	651	701
F6EQD	420	629
KO9A	524	545
JE1LFX	216	506
JI5USJ	425	450
N4QWF	325	336
WD9EWK (DM23)	200	207
WD9EWK (DM31)	200	206
VK3EHG	New	130
KB4YKC	New	100
KT8O	New	100

KT8O is first VUCC Satellite holder from EN71. Congratulations to the new VUCC Satellite holders!

DXCC Satellite Award/Endorsement Change Summary for March 01, 2025 to April 01, 2025

Callsign	03/01/2025	04/01/2025
DL2GRC	160	184
I3BUI	167	169
ZS1LS	160	168
AB9V	156	158
HB9RYZ	155	157
PE1L	151	154
EA6VQ	147	151
PA7RA	144	147
YO2RR	142	145
SP3AU	140	144
HB9GWJ	137	141
K8DP	125	129
E70A	New	125
CU3AN	115	120
IK8YSS	New	111
G4BWP	105	110
JJ1BMB	101	110
EA3BS	New	106
SV1HEP	New	106

SV1HEP is first DXCC Satellite holder from KM18. Congratulations to the new DXCC Satellite holders!

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

Changes to AMSAT-NA TLE Distribution for April 4, 2025

The following satellites have been added to this week’s AMSAT TLE distribution:
JINJUSat 1B NORAD Cat ID 63210 Downlink 435.185 MHz
NUSHSAT 1 NORAD Cat ID 63211 Downlink 436.200 MHz
DRAGON Fram2 NORAD Cat ID 63427 Downlink 437.550 MHz

Please note that the elements provided for “DRAGON Fram2” are provided by the US Space Force, while “Fram2Ham” are derived from state vectors provided by SpaceX and converted to TLE by ARISS. AMSAT TLE for “Fram2Ham” continue to use the provisional object number 90000. There is no practical difference between the element sets for Amateur Radio use. Hats off to SpaceX for a precision orbital injection, the inclination of this polar orbit is 90.00 degrees.

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

ARISS NEWS

+ Recently Completed

Sayama Technical High School, Sayama, Japan, direct via JA1YUT
The ISS callsign was OR4ISS
The scheduled crewmember was Takaya Onishi KF5LKS
The ARISS mentor was 7M3TJZ
Contact was successful: 2025-04-02 09:07:21 UTC
Watch the Livestream at: https://space.sayama.jp/
Congratulations to the Sayama Technical High School students!

Université de Namur, Namur, Belgium, telebridge via IK1SLD
The ISS callsign was OR4ISS
The scheduled crewmember was Don Pettit KD5MDT
The ARISS mentor was ON6TI
Contact was successful: 2025-04-02 15:11:17 UTC
Watch the Livestream at: https://www.youtube.com/live/MGHDLglTDAs
Congratulations to the Université de Namur students!

City of St. Petersburg School, St. Petersburg, Russia, direct via TBD
The ISS callsign was RSØISS
The scheduled crewmember was Aleksey Ovchinin
The ARISS mentor was RV3DR
Contact was successful: 2025-04-03 12:45 UTC
Congratulations to the City of St. Petersburg School students!

Ufa City School, Ufa, Russia, direct via TBD
The ISS callsign was RSØISS
The scheduled crewmember was Ivan Vagner
The ARISS mentor was RV3DR
Contact was successful: 2025-04-04 10:25 UTC
Congratulations to the Ufa City School students!

+ Upcoming Contacts

Lyceum No. 23 of Kaliningrad City, Kaliningrad, Russia, direct via TBD
The ISS callsign is presently scheduled to be RSØISS
The scheduled crewmember is TBD
The ARISS mentor is RV3DR
Contact is go for Mon 2025-04-07 11:10 UTC

ARISS outage upcoming on Monday/Tuesday. ARISS radios on the International Space Station will power off in support of Soyuz docking.

Schedule: Radios turned off Monday April 07 about 16:45 UTC | 12:45 PM ET / Radios back on Tuesday April 08 about 16:45 UTC | 12:45 PM ET.

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]

Upcoming Satellite Operations

None currently posted.

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

AMSAT Ambassador Activities

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

AMSAT Ambassador Tom Schuessler, N5HYP, reports:

I will be giving a couple of local presentations on getting started with satellites in the Dallas/Fort Worth Texas area this month.

Thursday, April 10th, by Zoom to the Metrocrest Amateur Radio Society (MARS), at 7PM. More information on their meetings can be found at https://www.kb5a.org/ .

Monday, April 28th, 7PM for the Denton County Amateur Radio Association (DCARA), In-person presentation. Details on the calendar at https://dcara.net/club-calendar/ .

Also, I do want to remind AMSAT members in the Metroplex, that we run two AMSAT nets weekly. DFW AMSAT-East on Tuesdays at 8PM CT (Except for the first Tuesday) on the 146.88 W5FC Dallas Amateur Radio Club repeater, PL 110.9. Also available on Echolink W5FC-R, node 37247 and on Allstar, search W5FC node 555178.

Every Wednesday night at 9PM CT, on the Arlington Amateur Radio Club K5SLD 147.14 for DFW AMSAT-West.

Hope you can make one of these presentations, or join in on the nets, especially if you live in the area.

Brainerd MN Area Hamfest – April 12th, 2025
Brainerd National Guard Armory
1115 Wright Street
Brainerd, MN 56401
https://brainerdham.org/
AD0HJ, KE0PBR

Dayton Hamvention – May 16th thru 18th, 2025
Greene County Fair and Expo Center
210 Fairground Road
Xenia, OH 45385
https://hamvention.org/

[ANS thanks Bo Lowrey, W4FCL, Director – AMSAT Ambassador Program, for the above information]

AMSAT Remove Before Flight Key Tags Now Available
Yes, These are the Real Thing!

Your $20 Donation Goes to Help Fly a Fox-Plus Satellite
Includes First Class Postage (Sorry – U.S. Addresses Only)
Order Today at https://www.amsat.org/product/amsat-remove-before-flight-keychain

Satellite Shorts From All Over

+ Didn’t get enough SSTV last week? The International Space Station will be transmitting special Slow Scan Television (SSTV) images to celebrate Cosmonautics Day, which honors Yuri Gagarin’s historic first spaceflight on April 12, 1961. The SSTV event is organized by ARISS (Amateur Radio on the International Space Station) and will run from April 11 through the weekend. A total of 12 images will be broadcast in PD120 mode on the standard downlink frequency of 145.800 MHz FM. Enthusiasts around the world can receive these images using a VHF radio or SDR, along with SSTV decoding software such as MMSSTV, RX-SSTV, or Robot36. This is a great opportunity for amateur radio operators and space fans alike to collect commemorative images directly from orbit. Be sure to check ISS pass times for your location so you don’t miss the transmissions. (ANS thanks ARISS for the above information)

+ NASA astronaut Jonny Kim, along with Roscosmos cosmonauts Sergey Ryzhikov and Alexey Zubritsky, will launch aboard the Soyuz MS-27 spacecraft to the International Space Station on Tuesday, April 8th, at 05:47 UTC from the Baikonur Cosmodrome in Kazakhstan. After a three-hour, two-orbit journey, they are scheduled to dock at the station’s Prichal module at approximately 09:03 UTC and join the Expedition 72/73 crew. This marks the first spaceflight for Kim and Zubritsky, and the third for Ryzhikov, with the mission lasting about eight months. They will work alongside international astronauts and cosmonauts to advance scientific research aboard the ISS. NASA will provide live coverage of the launch, docking, and hatch opening events on NASA+, including hatch opening at approximately 11:20 UTC. This mission continues the ISS’s legacy as a vital platform for long-duration spaceflight research, supporting NASA’s broader goals, including the Artemis campaign and future missions to Mars. (ANS thanks NASA for the above information)

+ On March 22, 2025, a team of amateur radio astronomers used the historic Dwingeloo telescope to successfully bounce a radio signal off Venus and receive its echo, marking only the second amateur Earth-Venus-Earth (EVE) bounce ever achieved. The first amateur EVE was accomplished in 2009 by AMSAT-DL using the 20-meter radio telescope at the Bochum Observatory. During this recent experiment, Venus was at its closest approach to Earth—about 42 million kilometers away—allowing for a 280-second round-trip signal travel time. The team transmitted a 278-second tone at 1299.5 MHz and repeated the cycle four times, with both Dwingeloo and the more sensitive Stockert telescope successfully receiving the echoes. Signal analysis, including Doppler corrections and frequency binning, showed detections with up to 9.2 sigma significance when combining data from both sites. Although a transmitter issue cut short plans for more complex signal testing, the team looks forward to continuing the experiment during the next Venus conjunction in October 2026, with support from organizations like the Deep Space Exploration Society, Open Research Institute, and many dedicated volunteers. (ANS thanks Dwingeloo Radio Telescope (CAMRAS) for the above information)

+ NASA’s Parker Solar Probe has completed its second daring flyby of the sun, coming within 3.8 million miles of its surface at speeds nearing 430,000 mph, while collecting valuable data on solar wind and the sun’s corona. The spacecraft operated autonomously during the approach, using four specialized instruments to study the sun’s outer atmosphere. This mission marks another historic milestone in solar science, as Parker continues to rewrite what we know about our star and helps scientists better predict space weather. The spacecraft’s extreme performance is made possible by cutting-edge technologies, including a heat shield, self-cooling solar arrays, and autonomous systems. In recognition of these innovations, the Parker Solar Probe team—comprising NASA, the Johns Hopkins Applied Physics Lab, and over 40 partners—was awarded the prestigious 2024 Robert J. Collier Trophy. Launched in 2018 and managed under NASA’s Living With a Star program, the probe is expected to make another close approach in June, continuing its groundbreaking journey into uncharted solar territory. (ANS thanks Space.com for the above information)

+ NASA and Boeing are working together to prepare the CST-100 Starliner spacecraft for its next crewed flight, which is expected in late 2025 or early 2026. This follows the spacecraft’s first crewed mission, which experienced a propulsion system failure that extended an eight-day mission to a nine-month stay for astronauts Butch Wilmore and Suni Williams, who later returned via SpaceX’s Dragon capsule. In response, teams are conducting extensive testing and analysis, including propulsion system evaluations at White Sands Test Facility to address overheating issues and helium leaks. Over 70% of the anomalies from the previous mission have been resolved, but major propulsion issues remain under review into 2025. Boeing’s ongoing work on Starliner, which has cost over $2 billion, is part of NASA’s broader strategy to maintain flexible and safe access to space through commercial partnerships. If testing proceeds as planned, Starliner’s next mission could support either crew or cargo transport to the International Space Station. (ANS thanks Reuters and NASA for the above information)

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

In addition to regular membership, AMSAT offers membership to:

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
mahrenstorff [at] amsat.org

ANS-054 AMSAT News Service Weekly Bulletins

February 23, 2025 by Mitch Ahrenstorff

In this edition:

* HADES-R FM Repeater Activated and Designated Spain-OSCAR 124 (SO-124)
* ARISS Completes Successful FRAM2Ham Simulation Event Using ISS Radio
* Blue Ghost and Resilience: Private Landers on Course for Lunar Touchdowns
* The Space Race Below: How Satellites Are Pushing the Limits in VLEO
* Beyond L1: Solar Sails Aim to Enhance Space Weather Alerts
* Changes to AMSAT-NA TLE Distribution for February 21, 2025
* ARISS News
* Upcoming Satellite Operations
* AMSAT Ambassador Activities
* Satellite Shorts From All Over

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-054 AMSAT News Service Weekly Bulletins

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

DATE 2025 Feb 23

HADES-R FM Repeater Activated and Designated Spain-OSCAR 124 (SO-124)

AMSAT-EA has confirmed that the FM repeater aboard the HADES-R satellite has been successfully activated and is now available for amateur radio operators worldwide. The activation took place on February 19th, 2025, following a series of telemetry and command tests to ensure the satellite’s stability and performance. Early reports indicate that the repeater is functioning as expected, providing strong two-way FM voice communications. AMSAT-EA expressed its gratitude to the amateur radio community for submitting telemetry reports, which contributed to the successful commissioning of the satellite.

HADES-R was launched aboard a Falcon 9 rocket from Vandenberg Space Force Base in California on January 14th, 2025, as part of SpaceX’s Transporter-12 mission. Developed by AMSAT-EA, the satellite carries an FM and digital repeater payload designed to provide communication services to amateur radio enthusiasts worldwide. It was deployed from the D-Orbit ION-SCV-016 orbital transfer vehicle on January 22nd and has since been transmitting telemetry data while undergoing operational testing. With the repeater now active, operators can use the uplink frequency of 145.925 MHz and the downlink frequency of 436.885 MHz for communication, with additional support for digital modes such as APRS and FSK telemetry at various data rates.

At the request of AMSAT-EA, AMSAT has officially designated HADES-R as Spain-OSCAR 124 (SO-124) in recognition of its contributions to amateur satellite communications. This designation underscores the satellite’s role in expanding access to space-based communications for the amateur radio community. AMSAT congratulates AMSAT-EA on this achievement and looks forward to the continued success of this and future projects. Meanwhile, amateur radio operators eagerly anticipate the upcoming launch of HADES-ICM on the Transporter-13 mission in March 2025, which will further enhance satellite-based communication capabilities.

[ANS thanks AMSAT-EA and Drew Glasbrenner, KO4MA, AMSAT VP Operations / OSCAR Number Administrator for the above information]

ARISS Completes Successful FRAM2Ham Simulation Event Using ISS Radio

The FRAM2Ham ISS Simulation event was a success, bringing together amateur radio enthusiasts and educators from around the world. Over five days, participants engaged in a simulated transmissions from the ISS Service Module Radio to mirror real-world conditions aboard a Dragon spacecraft, which will be used for the upcoming FRAM2 mission. This provided valuable practice for the FRAM2Ham competition. The event was organized and run by ARISS (Amateur Radio on the ISS). The ham radio community followed the request to withhold image postings until the official reveal date of February 20th. By the end of the event, 1,975 images had been submitted, with nearly half coming from students and educators, highlighting the educational impact of the initiative.

The FRAM2 mission will be the first human spaceflight in polar orbit, flying over the North and South poles. Named after the polar exploration ship Fram, the mission aims to highlight exploration, curiosity, and technological progress. A SpaceX Falcon 9 rocket will launch four astronauts from Europe and Australia into orbit for 3-5 days, with a targeted launch in spring 2025. The crew consists of mission commander Chun Wang of Malta, vehicle commander Jannicke Mikkelsen of Norway, pilot Rabea Rogge of Germany, and mission specialist Eric Philips of Australia.

As part of the mission, Rabea Rogge, LB9NJ/KD3AID, will operate the onboard amateur radio system, transmitting SSTV images for a high school and university student competition. These images will also be available to the general public. The FRAM2Ham competition is an experimental radio challenge open to high school and university students, where teams receive SSTV images of three geographical locations transmitted via the onboard ham radio. However, these images will be fragmented and scrambled, requiring participants to piece them together and determine their significance in polar history.

While anyone can receive the images, forming an international team may help solve the puzzle. Participants must correctly identify at least two of the three locations to qualify for prizes, which include QSL cards with space-flown FRAM2 mission stickers. The competition is open to members of educational institutions between the ages of 16-25 years from eligible countries, including Europe (CEPT), the US, Canada, and Australia. The ARISS International team has supported the event by organizing the FRAM2Ham ISS Simulation to help participants develop skills in acquiring images for the competition. For more information, visit the FRAM2HAM website at https://fram2ham.com and the ARISS website at https://ariss.org.

[ANS thanks ARISS and Fram2Ham for the above information]

Blue Ghost and Resilience: Private Landers on Course for Lunar Touchdowns

Firefly Aerospace’s Blue Ghost lunar lander has successfully lowered its orbit, bringing it closer to the moon’s surface as it prepares for a historic landing attempt. The spacecraft, part of Firefly’s “Ghost Riders in the Sky” mission, completed a three-minute, 18-second engine burn that reduced its altitude to 75 miles (120 kilometers) above the lunar surface. This maneuver marks a critical phase of the mission as the lander remains in this orbit until its descent begins in less than two weeks.

In a recent update on X, Firefly Aerospace shared a video showcasing Blue Ghost’s new perspective of the lunar surface. The company also warned of intermittent communications blackouts as the lander orbits around the moon’s far side. While on the near side, mission teams are receiving data and refining plans for additional engine burns that will bring Blue Ghost even closer to its intended landing site. The mission is on track for touchdown on March 2nd.

Blue Ghost was launched last month aboard a SpaceX Falcon 9 rocket from NASA’s Kennedy Space Center in Florida. It is part of NASA’s Commercial Lunar Payload Services (CLPS) program, which contracts private companies to deliver scientific instruments and technology demonstrations to the moon. The lander is carrying 10 NASA payloads designed to study the lunar environment and aid future Artemis program missions.

Blue Ghost captured this image following a successful Lunar Orbit Insertion on February 14th. [Credit: Firefly Aerospace]

Sharing its launch aboard the Falcon 9 was another lunar lander, Japan-based ispace’s Resilience. This marks ispace’s second attempt at a moon landing after its first mission ended in failure. Resilience is carrying a micro-rover named Tenacious and follows a different trajectory than Blue Ghost, taking a longer, more energy-efficient route. Unlike Blue Ghost, which will attempt a landing within weeks, Resilience’s descent is planned for late May or early June.

Resilience recently performed a lunar flyby on February 14th, passing within 5,220 miles (8,400 kilometers) of the moon’s surface. The maneuver provided a gravity assist that adjusted its trajectory for a smoother arrival into lunar orbit in early May. The lander captured and transmitted a striking image of the lunar surface from 8,972 miles (14,439 kilometers) away, marking a milestone for Japan’s private space industry.

If successful, Blue Ghost will become the second private spacecraft to land on the moon. The lander is set to operate for one full lunar day, equivalent to about two weeks, before losing power as the sun sets. During that time, its NASA payloads will conduct experiments, collect samples, and test new technology. These efforts will contribute to ongoing lunar exploration and preparations for the Artemis program’s future crewed missions to the moon.

[ANS thanks the Josh Dinner / Mike Wall, Space.com, for the above information]

The 2025 AMSAT President’s Club Coins Have Just Arrived!
Celebrating the 40th Anniversary of Amateur Radio on Human Spaceflight

Help Support GOLF and Fox Plus.
Join the AMSAT President’s Club today!

The Space Race Below: How Satellites Are Pushing the Limits in VLEO

The race to explore the lowest reaches of space is gaining momentum as companies work to deploy satellites in Very Low Earth Orbit (VLEO). This untapped region, situated just above Earth’s atmosphere, presents both challenges and unprecedented opportunities. While traditional satellites operate at altitudes ranging from hundreds to thousands of miles above Earth, these new “sky skimmers” will navigate much lower, skimming the upper reaches of the atmosphere. The potential advantages of VLEO satellites include enhanced Earth observation, improved communications, and the ability to remain operational in orbit indefinitely through advanced propulsion technologies.

Satellites in VLEO face a difficult balancing act. Unlike their higher-altitude counterparts, these spacecraft must contend with significant atmospheric drag, which constantly threatens to pull them back to Earth. Traditional satellites rely on their horizontal momentum to stay in orbit, but in VLEO, this is not enough. To remain aloft, engineers are exploring Air-Breathing Electric Propulsion (ABEP) systems, which harvest atmospheric molecules and convert them into thrust. If successful, these technologies could allow satellites to sustain themselves indefinitely without the need for large fuel reserves.

Several companies and institutions are actively pursuing this technology. The European Space Agency’s Gravity Field and Steady-State Ocean Circulation Explorer (GOCE) satellite was an early attempt to operate in VLEO, using ion propulsion to counteract drag. More recently, startups such as Kreios Space and Stellar Advanced Concepts have been developing ABEP prototypes, with planned test missions in the coming years. Governments are also getting involved, with the U.S. Department of Defense investing millions in research programs such as Otter, which aims to create operational VLEO satellites.

Air-breathing propulsion technology could enable satellites to remain in Very Low Earth Orbit indefinitely. [Credit: Stellar Advanced Concepts]

Different companies are taking varied approaches to overcoming the challenges of VLEO. Redwire, a Florida-based aerospace company, is working on a modular satellite concept called SabreSat, designed to minimize drag and potentially operate for up to seven years in VLEO. The company’s European division is also developing a similar spacecraft, Phantom, under the European Space Agency’s Skimsat program. While Phantom will not use air-breathing propulsion, it will incorporate specialized materials and an aerodynamic design to enhance longevity in low orbit.

The benefits of VLEO satellites extend beyond military and scientific applications. Their close proximity to Earth enables higher-resolution imaging, which could be useful for agriculture, disaster monitoring, and environmental studies. Additionally, communications networks, such as satellite-based internet services, could see a significant boost from VLEO technology. Lower-altitude satellites could provide faster connections and direct-to-device communication capabilities, potentially revolutionizing global internet access.

Despite the promise of VLEO, challenges remain. The region is highly dynamic, with atmospheric conditions influenced by solar activity, which can cause unexpected changes in drag forces. Additionally, while VLEO naturally clears debris by pulling defunct satellites back to Earth, high-energy collisions can still send fragments into higher orbits, creating long-term space debris hazards. As the race to dominate VLEO accelerates, companies and governments must address these risks while capitalizing on the immense potential of this new frontier in space technology.

[ANS thanks the Jonathan O’Callaghan, BBC, for the above information]

Beyond L1: Solar Sails Aim to Enhance Space Weather Alerts

Scientists are developing solar sail satellites as a potential early warning system for geomagnetic storms, which can disrupt technological systems on Earth. These sails, which harness sunlight for propulsion, could enhance space travel and improve forecasting for space weather events.

Solar sailing operates similarly to traditional sailing, except it uses photons from the sun instead of wind. “A lot of us have experienced sailing; it’s exactly like that,” said Irfan Azeem, division chief at NOAA’s Office of Space Weather Observations. “Instead of using air, we’re using the light emitted by the sun to propel our satellites.”

Unlike traditional propulsion systems, solar sails offer a cost-effective means of maneuvering satellites without fuel. “This is a very novel technology,” Azeem added. “We have traditionally relied on propulsion to take satellites from one place to another, and solar sails are providing a new, efficient way to travel in space.” NOAA’s satellites play a vital role in space weather monitoring, gathering data that helps issue warnings for potentially disruptive solar flares.

One quadrant of the Solar Cruiser’s whopping 17,800 square foot (1,654 square meter) sail. [Credit: NASA/Marshall Space Flight Center]

Currently, satellites like NASA’s Advanced Composition Explorer and NOAA’s Deep Space Climate Observatory track the solar wind, a stream of charged particles from the sun that can interact with Earth’s magnetic field. Although current monitoring provides some advance notice of geomagnetic storms, scientists aim to improve lead times by positioning satellites closer to the sun through NOAA’s Space Weather Next program.

One major advantage of solar sails is their ability to travel beyond the Lagrange One Point (L1), a location about 932,000 miles (1.5 million kilometers) from Earth where satellites currently observe the sun. “L1 provides a semistable orbit for persistent sun monitoring,” Azeem explained. “But if you want to go further, you need chemical rockets. Solar sails offer a cost-effective alternative for moving upstream.” By positioning satellites further ahead in the solar wind, NOAA estimates they could improve geomagnetic storm lead times by 50%.

At the American Meteorological Society’s annual meeting, NOAA provided updates on the Solar Cruiser project, a collaboration with NASA. The full-scale solar sail, set to span 17,793 square feet (1,653 square meters), is under construction. The spacecraft will include four sails, each built separately, with completion expected by February 2026. NOAA aims to secure a rideshare launch by 2029. “I’m most excited about the complexity of integrating different disciplines,” Azeem said. “Advances in material science and other fields are helping us push space weather monitoring to the next level.”

[ANS thanks the Meredith Garofalo, Space.com, for the above information]

Changes to AMSAT-NA TLE Distribution for February 21, 2025

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

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

ARISS NEWS

+ Recently Completed

Woodward Mill Elementary School, Lawrenceville, Georgia, direct via K4RGK
The ISS callsign was NA1SS
The scheduled crewmember was Don Pettit KD5MDT
The ARISS mentor was K4RGK
Contact was successful: Thu 2025-02-20 16:37:28 UTC
Watch for Livestream at https://www.youtube.com/live/NfxlSEUOg6A
Congratulations to the Woodward Mill Elementary School students!

Royal Moroccan Air Academy, Marrakech, Morocco, direct via CN8ERA
The ISS callsign was OR4ISS
The scheduled crewmember was Don Pettit KD5MDT
The ARISS mentor was IN3GHZ
Contact was successful: Fri 2025-02-21 11:12:20 UTC
Congratulations to the Royal Moroccan Air Academy students!

+ Upcoming Contacts

None currently scheduled.

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]

Upcoming Satellite Operations

J68HZ (op: WA4PGM) active from 02/26 to 03/04 from grid square FK93.

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

AMSAT Ambassador Activities

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

AMSAT Ambassador Clint Bradford, K6LCS, says,

Clint has NEVER given the exact same show twice: EACH of the 150+ presentations so far has been customized/tailored to their audiences.

Midwinter Madness Hamfest – March 22nd, 2025
Buffalo Civic Center
1306 County Road 134
Buffalo MN 55313
https://k0ltc.org/midwinter-madness/
KØJM, ADØHJ, KEØPBR

Southeastern VHF Conference 2025 – April 4th thru 5th, 2025
Quality Inn Exit 4
3095 Wilma Rudolph Boulevard
Clarksville, TN 37040
https://svhfs.org/wp/2025-conference/
W4FCL

[ANS thanks Bo Lowrey, W4FCL, Director – AMSAT Ambassador Program, for the above information]

AMSAT Remove Before Flight Key Tags Now Available
Yes, These are the Real Thing!

Your $20 Donation Goes to Help Fly a Fox-Plus Satellite
Includes First Class Postage (Sorry – U.S. Addresses Only)
Order Today at https://www.amsat.org/product/amsat-remove-before-flight-keychain

Satellite Shorts From All Over

+ In 2024, NASA’s Search and Rescue technologies contributed to saving 407 lives in the U.S., including 314 at sea, 41 in aviation incidents, and 52 through personal locator beacons. These efforts are part of the international Cospas-Sarsat satellite-aided search and rescue system, which has helped save over 50,000 lives worldwide since 1982. Using GPS satellites, emergency beacons transmit distress signals to the Cospas-Sarsat network, enabling first responders to locate and rescue those in need. NASA’s Search and Rescue Office, a division of the SCaN Program, has been involved in rescue operations since 1979 and continues to enhance beacon technology for both Earth-based and space missions. The Advanced Next-Generation Emergency Locator (ANGEL) beacon is being developed to support crew recovery efforts, including for Artemis missions returning from deep space. NASA collaborates with NOAA, the U.S. Coast Guard, the U.S. Air Force, and other agencies to ensure rapid response and rescue operations across land, sea, and air. (ANS thanks NASA for the above information)

+ NASA and SpaceX have decided to swap Crew Dragon spacecraft for the Crew-10 mission, opting to use the previously flown Endurance instead of a newly built capsule to prevent further delays. Endurance, which had been assigned to the private Ax-4 mission, will now support Crew-10, allowing the launch to be accelerated from late March to no earlier than March 12th. The original delay stemmed from setbacks in assembling and testing the new Crew Dragon, pushing the Crew-10 launch from February to March. Crew-9, currently on the ISS, will return a few days after Crew-10 arrives, bringing back NASA astronauts Suni Williams and Butch Wilmore, whose extended stay became a political topic after Elon Musk and former President Trump criticized the delay. Williams, however, dismissed claims that she and Wilmore were “abandoned,” stating they were safe and had all necessary resources aboard the station. The change in spacecraft does not alter the Crew-10 lineup, commanded by NASA astronaut Anne McClain, but it raises uncertainty about the Ax-4 mission timeline, which was originally planned for April. (ANS thanks SpaceNews for the above information)

+ NASA’s SPHEREx telescope, set to launch no earlier than February 27th aboard a SpaceX Falcon 9 rocket, will explore cosmic reservoirs of life’s building blocks. It will scan space for water, carbon dioxide, and carbon monoxide frozen onto interstellar dust grains, which exist in molecular clouds where stars and planets form. Scientists believe these icy reservoirs played a crucial role in shaping Earth’s oceans and other celestial bodies’ water content. Unlike previous telescopes that analyzed specific regions, SPHEREx will conduct an extensive 3D spectral survey, identifying ice compositions across different environments. The mission aims to resolve longstanding questions about molecular cloud chemistry, particularly why previous missions, like SWAS, detected less gaseous water than expected. By working alongside telescopes such as Webb, SPHEREx will refine our understanding of planet formation and the distribution of essential life-building compounds across the universe. (ANS thanks SpaceDaily for the above information)

+ SpaceX is preparing for its eighth Starship launch (IFT-8) by conducting crucial static fire tests at its Starbase facility in Texas. The company recently ignited all 33 Raptor engines on the Super Heavy booster and completed a dynamic engine test for the Starship stage to simulate various in-flight conditions. These tests mark a key milestone before the vehicle’s final stacking, where the two massive components will be joined for launch. Once stacked, the fully integrated Starship and Super Heavy system will stand an impressive 403 feet (123 meters) tall, making it the most powerful rocket ever built. Starship’s previous test flight, IFT-7, had mixed results, with a successful booster catch but a loss of communication with the Starship stage, which ultimately disintegrated over the Caribbean. SpaceX continues to refine the vehicle with each iteration, incorporating new hardware to improve performance and reliability. While IFT-8 could launch by the end of February, the schedule remains dependent on FAA approval and final preparations. (ANS thanks Space.com for the above information)

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

In addition to regular membership, AMSAT offers membership to:

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
mahrenstorff [at] amsat.org

Welcome SO-125! AMSAT-EA’s HADES-ICM Joins the OSCAR Fleet

Your Voice, Your Board: Nominate Now for 2025 AMSAT Election

Another Batch of CubeSatSim Kits Available Soon in AMSAT Store

SpaceX Starship Ninth Flight Yields Data, Misses Reentry Goals

The 2025 AMSAT President’s Club Coins Have Just Arrived! Celebrating the 40th Anniversary of Amateur Radio on Human Spaceflight

Help Support GOLF and Fox Plus. Join the AMSAT President’s Club today!

Japanese Private Lander Resilience Nears Lunar Touchdown

GridMasterMap Satellite Top 100 Rovers June 2025 Rankings

Changes to AMSAT-NA TLE Distribution for May 30, 2025

ARISS NEWS

AMSAT Ambassador Activities

Scheduled Events

AMSAT Remove Before Flight Key Tags Now Available Yes, These are the Real Thing!

Your $20 Donation Goes to Help Fly a Fox-Plus Satellite Includes First Class Postage (Sorry – U.S. Addresses Only) Order Today at https://www.amsat.org/product/amsat-remove-before-flight-keychain

Satellite Shorts From All Over

AMSAT Prepares for Major Presence at 2025 Dayton Hamvention

Amazon Kicks Off Kuiper Network with Ambitious First Satellite Launch

The 2025 AMSAT President’s Club Coins Have Just Arrived! Celebrating the 40th Anniversary of Amateur Radio on Human Spaceflight

Help Support GOLF and Fox Plus. Join the AMSAT President’s Club today!

Europe’s Vega C Rocket Launches Satellite to Map Forest Health

GridMasterMap Satellite Top 100 Rovers May 2025 Rankings

Changes to AMSAT-NA TLE Distribution for May 2, 2025

ARISS NEWS

Upcoming Satellite Operations

AMSAT Ambassador Activities

Scheduled Events

AMSAT Remove Before Flight Key Tags Now Available Yes, These are the Real Thing!

Your $20 Donation Goes to Help Fly a Fox-Plus Satellite Includes First Class Postage (Sorry – U.S. Addresses Only) Order Today at https://www.amsat.org/product/amsat-remove-before-flight-keychain

Satellite Shorts From All Over

Fram2 Mission Blends Polar Orbit, Amateur Radio, and Private Spaceflight

Spectrum’s Fiery Debut Marks Bold First Step for Isar Aerospace

The 2025 AMSAT President’s Club Coins Have Just Arrived! Celebrating the 40th Anniversary of Amateur Radio on Human Spaceflight

Help Support GOLF and Fox Plus. Join the AMSAT President’s Club today!

LuGRE Demonstrates Viability of GPS Navigation on the Moon

VUCC & DXCC Satellite Standings for April 2025

Changes to AMSAT-NA TLE Distribution for April 4, 2025

ARISS NEWS

Upcoming Satellite Operations

AMSAT Ambassador Activities

AMSAT Remove Before Flight Key Tags Now Available Yes, These are the Real Thing!

Your $20 Donation Goes to Help Fly a Fox-Plus Satellite Includes First Class Postage (Sorry – U.S. Addresses Only) Order Today at https://www.amsat.org/product/amsat-remove-before-flight-keychain

Satellite Shorts From All Over

HADES-R FM Repeater Activated and Designated Spain-OSCAR 124 (SO-124)

ARISS Completes Successful FRAM2Ham Simulation Event Using ISS Radio

Blue Ghost and Resilience: Private Landers on Course for Lunar Touchdowns

The 2025 AMSAT President’s Club Coins Have Just Arrived! Celebrating the 40th Anniversary of Amateur Radio on Human Spaceflight

Help Support GOLF and Fox Plus. Join the AMSAT President’s Club today!

The Space Race Below: How Satellites Are Pushing the Limits in VLEO

Beyond L1: Solar Sails Aim to Enhance Space Weather Alerts

Changes to AMSAT-NA TLE Distribution for February 21, 2025

ARISS NEWS

Upcoming Satellite Operations

AMSAT Ambassador Activities

AMSAT Remove Before Flight Key Tags Now Available Yes, These are the Real Thing!

Your $20 Donation Goes to Help Fly a Fox-Plus Satellite Includes First Class Postage (Sorry – U.S. Addresses Only) Order Today at https://www.amsat.org/product/amsat-remove-before-flight-keychain

Satellite Shorts From All Over

The 2025 AMSAT President’s Club Coins Have Just Arrived!
Celebrating the 40th Anniversary of Amateur Radio on Human Spaceflight

Help Support GOLF and Fox Plus.
Join the AMSAT President’s Club today!

AMSAT Remove Before Flight Key Tags Now Available
Yes, These are the Real Thing!

Your $20 Donation Goes to Help Fly a Fox-Plus Satellite
Includes First Class Postage (Sorry – U.S. Addresses Only)
Order Today at https://www.amsat.org/product/amsat-remove-before-flight-keychain

The 2025 AMSAT President’s Club Coins Have Just Arrived!
Celebrating the 40th Anniversary of Amateur Radio on Human Spaceflight

Help Support GOLF and Fox Plus.
Join the AMSAT President’s Club today!

AMSAT Remove Before Flight Key Tags Now Available
Yes, These are the Real Thing!

Your $20 Donation Goes to Help Fly a Fox-Plus Satellite
Includes First Class Postage (Sorry – U.S. Addresses Only)
Order Today at https://www.amsat.org/product/amsat-remove-before-flight-keychain

The 2025 AMSAT President’s Club Coins Have Just Arrived!
Celebrating the 40th Anniversary of Amateur Radio on Human Spaceflight

Help Support GOLF and Fox Plus.
Join the AMSAT President’s Club today!

AMSAT Remove Before Flight Key Tags Now Available
Yes, These are the Real Thing!

Your $20 Donation Goes to Help Fly a Fox-Plus Satellite
Includes First Class Postage (Sorry – U.S. Addresses Only)
Order Today at https://www.amsat.org/product/amsat-remove-before-flight-keychain

The 2025 AMSAT President’s Club Coins Have Just Arrived!
Celebrating the 40th Anniversary of Amateur Radio on Human Spaceflight

Help Support GOLF and Fox Plus.
Join the AMSAT President’s Club today!

AMSAT Remove Before Flight Key Tags Now Available
Yes, These are the Real Thing!

Your $20 Donation Goes to Help Fly a Fox-Plus Satellite
Includes First Class Postage (Sorry – U.S. Addresses Only)
Order Today at https://www.amsat.org/product/amsat-remove-before-flight-keychain