XPost: rec.radio.info

AMSAT NEWS SERVICE
ANS-124

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 AMSAT News Service bulletins are a free, weekly news and information se rvice 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 digita
l Amateur Radio satellites.

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

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

You can sign up for free e-mail delivery of the AMSAT News Service Bulletin
s via the ANS List; to join this list see: https://mailman.amsat.org/postor ius/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 eve nts, volunteer opportunities, and social gatherings. The event is set for M
ay 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 ama teur 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, p roviding a crucial link between AMSAT and the broader amateur radio communi
ty. Whether attendees can offer a few hours or the entire weekend, AMSAT we lcomes all who are interested. Those wishing to volunteer or request more i nformation 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 f uture plans within the AMSAT community. [https://www.amsat.org/wordpress/wp-content/uploads/2025/05/AMSAT-Dayton-Ha mvention-2024-1024x576.jpg]<https://www.amsat.org/wordpress/wp-content/uplo ads/2025/05/AMSAT-Dayton-Hamvention-2024.jpg>
Keith Baker, KB1SF and Mark Johns, K╪JM field questions at the AMSAT's Be ginner's Corner at Hamvention. [Credit: Fairly Amused<https://www.youtube.c om/@fairlyamused> / YouTube<https://www.youtube.com>]

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. Thi
s year's keynote speaker will be Phil Karn, KA9Q, who will discuss developm ents in his "ka9q-radio" software suite. Tickets are $70 and must be purcha
sed in advance through the AMSAT Store<https://www.amsat.org/product/2025-t apr-amsat-friday-night-banquet-registration/> by Monday, May 12, at 5:00 PM
EDT. Seating is limited based on the number of meals reserved with the cat erer, and no tickets will be sold or distributed at the AMSAT booth.

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

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

[ANS thanks AMSAT<https://www.amsat.org/amsat-at-hamvention-2025/> 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 c onstellation on Monday, marking the start of its long-anticipated challenge
to SpaceX's Starlink network. The satellites lifted off aboard a United La unch Alliance (ULA) Atlas V rocket at 7 p.m. EDT (2300 UTC) from Cape Canav eral Space Force Station in Florida, after an initial launch attempt earlie
r this month was delayed by weather.

The launch is part of Amazon's $10 billion Project Kuiper, which aims to de ploy 3,236 satellites into low-Earth orbit to deliver global broadband serv ice. Unveiled in 2019, the initiative targets consumers, businesses, and go vernments, a customer base already served by Starlink's rapidly growing pre sence in the satellite internet market. The service is also being positione
d 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. Unde
r a Federal Communications Commission mandate, Amazon must launch half of i
ts satellite constellation-1,618 satellites-by mid-2026. Analysts expect th
e company may need to seek an extension due to its late start. [https://www.amsat.org/wordpress/wp-content/uploads/2025/05/Amazon-Kuiper-I naugural-Satellite-Launch-1024x576.jpg]<https://www.amsat.org/wordpress/wp- content/uploads/2025/05/Amazon-Kuiper-Inaugural-Satellite-Launch.jpg>
ULA's Atlas V readies to launch Amazon's first Kuiper satellites from Cape Canaveral. [Credit: ULA<https://www.ulalaunch.com/> / YouTube<https://www.y outube.com/>]

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

Amazon could launch up to five additional Kuiper missions in 2025, accordin
g to ULA CEO Tory Bruno. The company has indicated that initial service cou
ld begin with as few as 578 satellites, enabling limited coverage in northe
rn and southern regions, with global service expanding as more satellites a
re deployed. Amazon's experience in consumer products and cloud infrastruct
ure is seen by executives as a potential advantage over competitors.

SpaceX, which has launched over 8,000 Starlink satellites since 2019, curre ntly leads the market with more than 5 million users in 125 countries. Desp
ite SpaceX's head start, Amazon founder Jeff Bezos remains optimistic about
Kuiper's future. "There's insatiable demand for internet," Bezos said in J anuary. "There's room for lots of winners."

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

[ANS thanks the Joey Roulette, Reuters<https://www.reuters.com/>, for the a bove information]

________________________________
The 2025 AMSAT President's Club Coins Have Just Arrived!
Celebrating the 40th Anniversary of Amateur Radio on Human Spaceflight [https://www.amsat.org/wordpress/wp-content/uploads/2025/01/2025-PC-Coin-2- Sided-Color-Web-300x148.jpg]
Help Support GOLF and Fox Plus. Join<https://www.amsat.org/join-the-amsat-presidents-club/> the AMSAT Presi dent'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 G uiana. The satellite separated from the rocket's Avum upper stage nearly an
hour later, entering a sun-synchronous orbit at an altitude of 666 kilomet ers.

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 synth etic aperture radar (SAR), designed to measure the amount of carbon stored
in Earth's forests by penetrating the tree canopy and mapping forest biomas
s. Simonetta Cheli, ESA's director of Earth observation programs, likened t
he 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, usi
ng the radar's ability to penetrate ice and sand. ESA plans to collaborate
with NASA, sharing data with the forthcoming NISAR satellite, which operate
s a similar SAR system at higher frequencies. [https://www.amsat.org/wordpress/wp-content/uploads/2025/05/ESA-Biomass-For est-Canopy-Penetrating-Satellite-1024x576.png]<https://www.amsat.org/wordpr ess/wp-content/uploads/2025/05/ESA-Biomass-Forest-Canopy-Penetrating-Satell ite.png>
ESA's Biomass satellite will map forest carbon with P-band radar from low E arth orbit. [Credit: ESA<https://www.esa.int/>/ATG MediaLab<https://www.atg -europe.com/>]

The satellite's radar system required new advancements in radio-frequency e lectronics due to the use of lower-frequency P-band waves. Airbus official Justin Byrne noted that engineers had to develop custom amplifiers and supp orting electronics. The radar's 12-meter deployable antenna, built by L3Har ris, 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 Dece mber 2024, following a 2022 failure during the VV22 mission. ESA and Ariane space officials emphasized the extensive reviews and oversight applied to t
he 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. Aria nespace CEO David CavaillolΦs highlighted the importance of ending relian
ce 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 tr ansition described as proceeding smoothly.

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

[ANS thanks the Jeff Foust, SpaceNews<https://spacenews.com/>, for the abov
e information]

________________________________
GridMasterMap Satellite Top 100 Rovers May 2025 Rankings

The May 2025 rankings for the Top 100 Rovers (Mixed LEO/MEO/GEO) in satelli
te operations, as determined by @GridMasterMap<https://x.com/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 whe
re a minimum number of QSOs logged on the gridmaster.fr<https://gridmaster.

website have been validated by a third party. Grid numbers do not dire

ctly reflect the exact number of activations. Satellite operators are encou raged to upload their LoTW satellite contacts to https://gridmaster.fr<http s://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<https://x.com/GridMasterMap> for the above infor mation]

________________________________ [https://www.amsat.org/wordpress/wp-content/uploads/2025/02/AMSAT-SDR-Gen2- GNU-Radio-Based-Transverter.jpg]<https://www.amsat.org/wordpress/wp-content /uploads/2025/02/AMSAT-SDR-Gen2-GNU-Radio-Based-Transverter.jpg> ________________________________
Changes to AMSAT-NA TLE Distribution for May 2, 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 u pdates are completely adequate for most amateur satellites. TLE bulletin fi
les 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 elem
ent sets, AMSAT is adopting the convention of listing the USSF/NORAD Satell
ite Catalog name first, followed by any secondary name or names in parenthe ses. 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 AR PIT" 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<https://www.amsat.org/keplerian-elements -resources/> page for the above information]

________________________________
ARISS NEWS

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

+ 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

Many times a school may make a last minute decision to do a Livestream or r
un 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://l ive.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 pi
ck up the microphone, raise the volume up, and talk on the crossband repeat
er. So give a listen, you just never know.

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 orb ital prediction or start listening about 10 minutes before the listed time.

The latest information on the operation mode can be found at https://www.ar iss.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 f
or 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 g
ain easy access to comprehensive information about the operators responsibl
e for activating specific grid squares. Additionally, you have the ability
to assess the match score between yourself and a particular rover for a giv
en pass, while also being able to identify the upcoming satellite passes th
at are accessible from your location.

[ANS thanks Ian Parsons, K5ZM<https://x.com/k5zm_>, AMSAT rover page manage
r, 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 a ppropriate 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+ presentat ions 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

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

For more information go to: https://www.amsat.org/ambassador/<https://www.a msat.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! [https://www.amsat.org/wordpress/wp-content/uploads/2021/02/Keytag1D-300x15 5.jpg]<https://www.zazzle.com/amsat_car_flag-256716714380264543>
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-key chain<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 upda
tes and information of interest to amateur radio satellite operators, inclu ding how to become a member of AMSAT. It can be accessed directly at: https ://whatsapp.com/channel/0029VaIMu2D4IBhG7yR2Tb2d. To join, download the fre
e WhatsApp app from your device's app store-App Store for iPhone<https://ap ps.apple.com/us/app/whatsapp-messenger/id310633997> or Google Play Store fo
r Android-or access it from your computer at https://web.whatsapp.com. What sApp, owned by Meta, is a global messaging platform that supports text, voi
ce, video, and multimedia sharing. It remains a popular tool among hams for
coordinating and exchanging satellite-related information in real time. (A
NS thanks Juan Carlos, CO8TW<https://x.com/JC_CO8TW>, for the above informa tion)

+ Firefly Aerospace's Alpha rocket suffered a launch failure early Tuesday after lifting off from Vandenberg Space Force Base in California. Roughly t wo-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 u pper stage ignited. Though the upper stage's Lightning engine fired for mor
e than six minutes, damage to its nozzle significantly reduced thrust, prev enting the rocket from reaching orbital velocity. The mission, which was ca rrying 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 launc
h market. (ANS thanks Ars Technica<https://arstechnica.com/> for the above information)

+ NOAA has announced that satellites NOAA 15, 18, and 19 will be reclassifi
ed as end-of-life effective June 16, 2025. These polar-orbiting weather sat ellites are widely used by amateur radio enthusiasts and RTL-SDR hobbyists
to receive APT and HRPT imagery. The news was first reported by Carl Reinem
ann on the USradioguy.com<https://usradioguy.com/> blog, where he clarified
that despite the end-of-life designation, transmissions will continue. NOA
A has confirmed that signals will still be broadcast on a "data of opportun ity" basis, meaning they are no longer intended for operational or safety-c ritical use but remain suitable for hobbyist reception. NOAA also stated th
at no ground intervention will be provided for future sensor or hardware fa ilures. Should any critical malfunctions occur, the satellites may be decom missioned, as was nearly the case with NOAA 15's scan motor, which previous
ly failed and later resumed function under unclear circumstances. (ANS than
ks RTL-SDR.com<https://www.rtl-sdr.com/> and USRadioguy.com<https://usradio guy.com/> for the above information)

+ A Soviet spacecraft originally intended for Venus, Cosmos 482, is expecte
d 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 mi ssion 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 E arth reentry due to its heavy thermal shielding. Satellite tracker Marco La ngbroek has modeled its descent and predicts it could hit the ground or oce
an at speeds exceeding 145 miles per hour. Although the risk to people or i nfrastructure is low, the lander's size and mass make its reentry comparabl
e to a small meteorite impact. Its fiery return is a rare and fascinating r eminder of Cold War-era space exploration still orbiting above us. (ANS tha
nks Space.com<https://www.space.com/> 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 shal
l 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<https://www.amsat.org> for additional membershi
p information.

73 and remember to help Keep Amateur Radio in Space!

This week's ANS Editor, Mitch Ahrenstorff, AD╪HJ
mahrenstorff [at] amsat.org<https://www.amsat.org>



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