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Subj: [ANS] ANS-030 AMSAT News Service Weekly Bulletins
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AMSAT NEWS SERVICE
ANS-030
The AMSAT News Service bulletins are a free, weekly news and information
service of AMSAT, The Radio Amateur Satellite Corporation. ANS publishes
news related to Amateur Radio in Space including reports on the activities
of a worldwide group of Amateur Radio operators who share an active interest
in designing, building, launching and communicating through analog and
digital Amateur Radio satellites.
The news feed on http://www.amsat.org publishes news of Amateur Radio in
Space as soon as our volunteers can post it.
Please send any amateur satellite news or reports to: ans-editor [at]
amsat.org
You can sign up for free e-mail delivery of the AMSAT News Service Bulletins
via the ANS List; to join this list see:
https://mailman.amsat.org/postorius/lists/ans.amsat.org/
In this edition:
* AMSAT’s GOLF-TEE CubeSat de-manifested from launch on ELaNa-46
* Weak Signals Heard from Spanish Satellites EASAT-2 and HADES
* Svalbard QO-100 Satellite DX-Pedition Announced
* Orbital Mechanics for New and Experienced Satellite Operators
* Changes to AMSAT-NA TLE Distribution for January 27, 2022
* ARISS News
* Upcoming Satellite Operations
* Hamfests, Conventions, Maker Faires, and Other Events
* Satellite Shorts From All Over
ANS-030 AMSAT News Service Weekly Bulletins
To: All RADIO AMATEURS
>From: Radio Amateur Satellite Corporation
712 H Street NE, Suite 1653
Washington, DC 20002
DATE 2022 Jan 30
AMSAT’s GOLF-TEE CubeSat de-manifested from launch on ELaNa-46
NASA has de-manifested GOLF-TEE from the ELaNa-46 mission at the request of
AMSAT. ELaNa-46 was expected to launch no earlier than 2022. COVID-related
restrictions and supply chain disruptions, affecting both AMSAT’s vendors
and team, have put AMSAT’s ability to meet the mission integration timeli
ne
at high risk.
AMSAT Vice-President Engineering Jerry Buxton, N0JY, described some of the
reasons for this decision:
• AMSAT finds itself in a similar situation to what other payloads and
space-industry providers are experiencing. The worldwide pandemic and
supply chain shortages are threatening everyone’s ability to properly and
successfully deliver for launches.
• Out of respect for NASA, the launch provider, and other payloads, it
is important to withdraw now, rather than later or, even worst, missing a
launch integration deadline, which has possible financial penalty
implications.
• GOLF-TEE and GOLF-1 have both been selected to participate in NASA’s
CubeSat Launch Initiative program, and NASA will continue to look for
another launch for GOLF-TEE.
AMSAT’s GOLF program plays an important role in AMSAT’s return to highly
elliptical orbits. In addition to proving the maneuverability capabilities
required by current and proposed orbital debris regulations, the GOLF
program will work through a series of increasingly capable spacecraft to
develop skills and learn systems for which we do not yet have the necessary
low-risk experience. Among these are active attitude control,
deployable/steerable solar panels, radiation tolerance for Commercial off
the Shelf (COTS) components in higher orbits, and propulsion.
The TEE designation in GOLF-TEE stands for “Technology Exploration
Environmentö and reflects GOLF-TEE’s mission goal to test two critical
systems needed for higher orbits. The first is an Attitude Determination and
Control System (ADCS) that will allow active pointing of high gain satellite
antennas, provide accurate attitude adjustments in future missions with
maneuverability systems, and allow pointing the fixed solar panel array for
best solar power in any given orbit type. The second is the
Radiation-Tolerant Integrated Housekeeping Unit (RTIHU), which will allow
AMSAT to gain initial orbit and space radiation exposure for radiation
event-induced fault tolerant systems designed using COTS components.
GOLF-TEE’s RTIHU includes a command transceiver, and its design is based
on
the Hercules line of ARM architecture-based microcontrollers.
GOLF-TEE will also evaluate a low-cost, deployable, fixed attitude, solar
panel array design as part of AMSAT Engineering’s exploration of fixed pa
nel
arrays that allow for outfitting a variable number of “wingsö in order
to
best match the power requirements of various CubeSat missions.
Additionally, GOLF-TEE will carry a modified Ettus E310 commercial
software-defined radio (SDR), as an experimental package, to test the high
speed data downlink in the 10 GHz band and a parrot V/x mode linear
transponder to provide users with an opportunity to experiment with the 10
GHz microwave downlink. GOLF-TEE will also carry a legacy V/u linear
transponder.
GOLF-1 will build on technology and lessons learned from the GOLF-TEE
mission; however, it will be a return to STEM-based educational missions,
including hosted student radiation and imaging experiments in collaboration
with AMSAT’s educational partners. GOLF-1 will require a more comprehens
ive
de-orbiting plan and hardware that are in compliance with NASA’s NPR 8715
.6
NASA Procedural Requirements for Limiting Orbital Debris in order to be
manifested on an ELaNa launch to the high altitude AMSAT is seeking.
A significant amount of funding is necessary to complete the development and
construction of the GOLF series of CubeSats. Please consider a donation
today. Donations designated for the AMSAT GOLF program may be made at
https://www.amsat.org/donations/amsat-golf-program-donations/
[ANS thanks Robert Bankston, KE4AL, President AMSAT for the above
information]
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The 2022 AMSAT President's Club coins have arrived!
To commemorate the 50th anniversary of its launch on
October 15, 1972, this year's coin features
an image of AMSAT-OSCAR 6.
Join the AMSAT President's Club today and help
Keep Amateur Radio in Space!
https://www.amsat.org/join-the-amsat-presidents-club/
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Weak Signals Heard from Spanish Satellites EASAT-2 and HADES
AMSAT-EA (Spain) has said it appears that EASAT-2 and HADES are
transmitting, and that weak signals have been heard, but the satellites’
antennas may not have deployed.
“We confirm the reception of both EASAT-2 and HADES, as well as the decod
ing
of telemetry and the FM recorded voice beacon with the call sign AM5SAT of
the first one. EASAT-2 appears to be working well, except for the deployment
of the antennas — something that apparently has not yet occurred and caus
es
weak signals,ö said AMSAT-EA Mission Manager Felix Paez, EA4GQS. “Howev
er,
the AMSAT-EA team confirms that, based on the reception of FSK, CW, the FM
voice beacon, and the telemetry data that has been decoded, it can be said
that the satellite is working perfectly. In the event of low battery or
system malfunction, the onboard computer would not transmit CW messages or
the voice beacon call sign, as it would be in [safe mode] with only fast and
slow telemetry transmissions.ö
At the request of AMSAT-EA, EASAT-2 has been designated as Spain-OSCAR 114
(SO-114) and HADES as Spain-OSCAR 115 (SO-115).
“These signals that confirm the operation of both satellites were received
by Daniel Estévez, EA4GPZ, at 1807 UTC on Saturday, January 15, using two
antennas from the Allen Telescope Array.ö Doppler observations from the
co-launched Delfi-PQ satellite and the amateur radio community have been
used to identify the satellites’ orbits or TLEs.
AMSAT-EA reports that Estévez performed a preliminary analysis using just
one polarization of one of the Allen Telescope Array satellite dishes.
EASAT-2 was detected with a relatively strong signal, close to the Delfi-PQ
signal, obtaining voice FM beacon transmissions and FSK, FSK-CW at 50 baud,
AMSAT-EA said.
“The CW beacon clearly shows the message VVV AM5SAT SOL Y PLAYA, which is
one of several that both satellites emit, although the call sign AM5SAT
confirms that it is EASAT-2,ö AMSAT-EA said. “In the recording made by
EA4GPZ, there is also a faint trace confirmed to be from HADES and stronger
packets probably from the IRIS-A satellite.ö
AMSAT-EA reports that signals from HADES are weaker than those of EASAT-2,
“most likely because the onboard computer has not yet managed to deploy t
he
antennas either, although it will continue trying regularly,ö AMSAT-EA sa
id.
“The reason the signals are suspected to be weaker at HADES is that the
antennas are more tightly folded than those of EASAT-2. In any case, this is
great news, since the transmission pattern confirms the proper functioning
of the satellite. In the observations, you can see the FSK tones with a
deviation of about 5 kHz interspersed with the FM carrier corresponding to
the voice beacon of the satellite, which has call sign AM6SAT. The AMSAT-EA
team is working to try to decode the telemetry signals and obtain more
detailed information on the state of the satellite.ö
AMSAT is asking amateurs with “very high-gain antennasö to try to recei
ve
them — especially HADES. “If we could decode telemetry, it would be very
helpful for us.ö AMSAT-EA said. “Until antennas are deployed, it will be
very difficult to use their repeaters or to receive any SSTV camera images
from HADES, but we hope that this will happen sooner or later, at least
because, even if the computer doesn’t succeed applying heat to the resist
or
where the thread [retaining the antennas] is attached, with time, the thread
should break due to the space environment conditions.ö
Details of the decoded telemetry and voice, as well as more details in:
https://www.amsat-ea.org/ (Texts are In Spanish)
And in the following Twitter threads:
EASAT-2 transmissions:
https://twitter.com/ea4gpz/status/1482457631566487553
EASAT-2 decodings by Gabriel Otero:
https://twitter.com/gaoterop/status/1482758196037050382
HADES transmissions:
https://twitter.com/ea4gpz/status/1482696274797338625.ö
[ANS thanks Felix Paez, EA4GQS, AMSAT-EA Mission Manager and AMSAT News
Service for the above information]
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Need new satellite antennas? Purchase Arrows, Alaskan Arrows,
and M2 LEO-Packs from the AMSAT Store. When you purchase through
AMSAT, a portion of the proceeds goes towards
Keeping Amateur Radio in Space.
https://amsat.org/product-category/hardware/
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Svalbard QO-100 Satellite DX-Pedition Announced
The very first Svalbard QO-100 Satellite DX-Pedition will take place April
22-24, 2022 from Kapp Linné – Isfjord Radio at 78° North. ON4CKM Cedr
ic,
ON5UR Max and ON4DCU Patrick will take up the challenge and travel to Kapp
Linné and stay there for 3 days, trying to be active 24 hours a day via t
he
Qatar-OSCAR 100 satellite. They will operate two QO-100 satellite stations
under the callsigns JW0W and JW100QO, while JW0X will be used by another
team for contacts on shortwave.
With QO-100 only 3° above the horizon, Kap Linné was the only suitable
place
in the area with Svalbard at the edge of the satellite footprint. Looking
for a suitable location to stay and getting there, is one of the biggest
challenges and cost drivers for the team. This is indeed a very unique
opportunity to work this rare location and DXCC via satellite. And if they
are lucky, they might also be able to contact DP0GVN at the german antarctic
research Neumayer-Station III for the North/South distance record via
QO-100. The team is seeking donations. Additional information and graphics
may be found at: https://bit.ly/3KLZsJI.
[ANS thanks Peter Gülzow, DB2OS, President AMSAT-DL for the above
information]
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Orbital Mechanics for New and Experienced Satellite Operators
Bob Meyers, WA8FXQ posted a useful link he discovered in the most recent
Orbital Index. It is particularly good for those who want a better
understanding of fundamental behind GPS.
The link's author, Bartosz Ciechanowski, is a blogger who focuses on
explorations of physics, math, and engineering. His animations couple with
his straight forward explanations to create a clear view of each topic he
tackles. His current blog post is focused on the principles behind GPS
systems, however in the process of explaining how GPS systems work, he
tackles orbital mechnics and the relationship of orbital altitude to radio
footprint of satellites. His excellent animations make it possible for him
to present the rather complicated mathematics visually and without requiring
the viewer to have a strong mathematical background. His blog on the GPS
system may be seen at: https://ciechanow.ski/gps/. He is also a Patreon
creator and fields questions and discussions on that platform.
[ANS thanks Bob Meyers, WA8FXQ and The Orbital Index for the above
information]
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Want to fly the colors on your own grid expedition?
Get your AMSAT car flag and other neat stuff
from our Zazzle store!
25% of the purchase price of each product goes
towards Keeping Amateur Radio in Space
https://www.zazzle.com/amsat_gear
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Changes to AMSAT-NA TLE Distribution for January 27, 2022
The following satellite has been added to this week's AMSAT TLE
Distribution.
Grizu-263a - NORAD Cat ID 51025 (Thanks to Space-Track/CelesTrak for the
identification.)
Still waiting for the SpaceTrack Catalog ID for Tevel-1 thru Tevel-8,
EASAT-2, and Hades to be identified. For info on these satellites, see AMSAT
News Service Bulletin ANS-023 (January 23.2022) on www.amsat.org
Finally, per AMSAT News Service Bulletin ANS-023, AMSAT-EA Receives Two
OSCAR Designations: SO-114 & SO-115. Drew Glasbrenner, KO4MA, AMSAT VP
Operations/OSCAR Number Administrator wrote: "At the request of AMSAT-EA,
AMSAT hereby designates EASAT-2 as Spain-OSCAR 114 (SO-114) and HADES as
Spain-OSCAR 115 (SO-115). We congratulate AMSAT-EA, thank them for their
contribution to the amateur satellite community, and wish them continued
success on this and future projects."
[ANS thanks Ray Hoad, WA5QGD, AMSAT Orbital Elements Manager, for the above
information]
--------------------------------------------------------------------
ARISS NEWS: Upcoming ARISS Contact Schedule as of 2022-01-27 01:30 UTC
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.
Lewis Center for Educational Research, Apple Valley, CA, telebridge via
K6DUE. The ISS callsign is presently scheduled to be NA1SS. The downlink
frequency is presently scheduled to be 145.800 MHz. The scheduled crewmember
is Thomas Marshburn KE5HOC. Contact is go for: Mon 2022-01-31 17:47:42 UTC
35 deg
Amur State University, Blagoveshchensk, Russia, direct via TBD
The ISS callsign is presently scheduled to be RSŲISS. The downlink freque
ncy
is presently scheduled to be 145.800 MHz. The scheduled crewmember is Pyotr
Dubrov. Contact is go for Wed 2022-02-02 08:45 UTC
Johannes-Kepler-Gymnasium, Lebach, Germany, direct via DLŲJKG (***). The
ISS
callsign is presently scheduled to be DPŲISS. The downlink frequency is
presently scheduled to be 145.800 MHz. The scheduled crewmember is Matthias
Maurer KI5KFH. Contact is go for: Fri 2022-02-04 11:37:09 UTC 25 deg
The next mode change to voice cross band repeater is expected to occur in
late January/early February 2022.
The latest information on the operation mode can be found at
https://www.ariss.org/current-status-of-iss-stations.html
The latest list of frequencies in use can be found at
https://www.ariss.org/contact-the-iss.html
[ANS thanks Charlie Sufana, AJ9N, one of the ARISS operation team mentors
for the above information]
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AMSAT, along with our ARISS partners, is developing an Amateur
Radio package, including two-way communication capability, to
be carried on-board Gateway in lunar orbit.
Support AMSAT's projects today at https://www.amsat.org/donate/
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Upcoming Satellite Operations
{Copy directly from
https://www.amsat.org/satellite-info/upcoming-satellite-operations/
however,
leave out sub-headings for "Major Roves" or "Quick Hits." If time permits,
edit out first-person comments such as "I will be going to ...." Make these
third-person as news reports.}
ISS Is in packet mode as of Jan 11th. 145.825 up and down. Going back to
cross band repeater on 1/31.
4A90, MEXICO (Special Event). Members of the Federacion Mexicana de Radio
Experimentadores (FMRE)[Mexican Society]are celebrating their 90th
anniversary during January, February and March 2022 promoting each of the 31
States and Mexico City with the following 32 different special event
callsigns and 4A90FMRE:
January 1-15th: 4A90COL, 4A90CMX, 4A90EMX, 4A90GTO, 4A90HGO, 4A90JAL
and 4A90MIC
January 16-30th: 4A90MOR, 4A90NAY, 4A90PUE, 4A90QRO, 4A90TLX and 4A90VER
January 31st-February 14th: 4A90AGS, 4A90BAC, 4A90BCS, 4A90COA, 4A90CHH
and 4A90DGO
February 15th-March 1st: 4A90NLE, 4A90SLP, 4A90SIN, 4A90SON, 4A90TAM and
4A90ZAC
March 2-16th: 4A90CAM, 4A90CHI, 4A90GRO, 4A90OAX, 4A90QUI, 4A90TAB
and 4A90YUC
Activity will be on various HF bands using CW, SSB, RTTY, FT8/FT4 and the
satellites. Awards are available (see QRZ.com for details). For more details
on the event, see:http://fmre90.puebladx.org
[ANS thanks Paul Overn, KE0PBR, AMSAT rover page manager, for the above
information]
---------------------------------------------------------------------
Hamfests, Conventions, Maker Faires, and Other Events
AMSAT Ambassadors provide presentations, demonstrate communicating through
amateur satellites, and host information tables at club meetings, hamfests,
conventions, maker faires, and other events.
Clint Bradford, K6LCS, AMSAT Ambassador gave his “Getting Started“
presentation last June to a great club on the east coast - now they want
MORE! The club has asked for a speaker to cover working the linear
satellites. EME is of interest to them too!
Clint would appreciate help finding a Zoom-capable speaker. For further
details,
please contact Clint Bradford, K6CLS at:
Email: clintbradford [at] mac DOT com or 951-533-4984 - cell
+ ARRL National Convention
February 10-13, 2022
DoubleTree by Hilton Orlando at SeaWorld
10100 International Dr, Orlando, FL 32821
+ Orlando HamCation
February 11-13, 2022
Central Florida Fairgrounds and Expo Park
4603 West Colonial Drive
Orlando, Florida 32808
+ CubeSat Developers Workshop
April 26–28, 2022
San Luis Obispo, CA
+ Hamvention 2022
May 20, 2022 to May 22, 2022
Greene County Fairgrounds and Expo Center
210 Fairground Road
Xenia, Ohio 45385
https://www.hamvention.org
+ 2022 Rocky Mountain ARRL Division Convention
October 7, 2022 - October 9, 2022
Event Center at Archer
3921 Archer Pkwy
Cheyenne, Wyoming 82007
https://wyhamcon.org/site.
Clint Bradford K6CLS, AMSAT Ambassador writes: "I have a really great club
needing a speaker specializing in SSB, and touching on EME. They were given
my “Getting Startedö presentation last year, and want MORE!
An East Coast club … meets on Wednesdays …
Please send me a private email message if you’re ready to Zoom!"
Write to: Clint Bradford K6LCS Email: clintbradford AT mac DOT com
951-533-4984 - cell
[ANS thanks Paul Overn, KE0PBR, AMSAT Events page manager, for the above
information]
---------------------------------------------------------------------
Satellite Shorts From All Over
+ A Martian carbon biosignature? Not content to be overshadowed by the
newer, shinier Perseverance, Curiosity has roved and drilled on (for nearly
10 years now). A paper and NASA summary both report (appropriately
conservatively) on tantalizing new evidence from the rover of potential
biosignatures in Gale crater. Curiosity’s SAM lab heated 24 different
powdered rock samples to 850° C, releasing their solid carbon as methane
gas. The onboard Tunable Laser Spectrometer then measured the carbon
isotopes in that gas and found more 12C than would be expected based on the
12C-to-13C ratio in the modern Martian atmosphere. On Earth, life
preferentially uses 12C over the heavier 13C, bioaccumulating it, so that we
observe significantly more 12C than 13C in ancient rocks where life grew.
Did ancient Martian microbial methanogenesis concentrate this isotope at
Gale crater as it built up complex organic molecules? Maybe. Two other
hypotheses offer abiotic explanations: one suggests that UV light could have
caused CO2 in the Martian atmosphere to form isotopically enriched carbon
monoxide molecules that settled to the surface, the other wonders if the
isotopes arrived from space when our solar system drifted through a
13C-depleted giant molecular cloud hundreds of millions of years ago. It’s
also possible that the Martian atmospheric concentration changed over time
for some unknown reason. “On Earth, processes that would produce the carb
on
signal we’re detecting on Mars are biological,ö but we don’t understa
nd the
Martian carbon cycle well enough yet to have any real confidence. As with
other tantalizing results about microbial extraterrestrial life, this will
probably just turn out to be a physicochemical process we don’t yet
understand. Or maybe not. See https://go.nasa.gov/35vE0IQ and
http://bit.ly/3IIKpyF for details. [ANS thanks NASA and The Orbital Index
for the above information]
+ Reaching the tipping point for 3D printing satellites: The number of
3D-printed parts on board satellites is growing amid advances in additive
manufacturing. Satellite shops are embracing the technology to cut costs and
accelerate production for increasingly capable spacecraft. Advances are
paving the way to a future where satellites can print parts in orbit. But
how close is the industry to 3D printing entire satellites? It’s a tricky
question, not least because the number of parts on a satellite differs
greatly depending on its size and complexity, and range from simple
foundational structures to intricate semiconductors. “Cubesat parts can
number in the hundreds of components while larger satellites can range from
tens of thousands to hundreds of thousandsö for flagship missions such as
the just-launched $10 billion James Webb Space Telescope, said Emile de
Rijk, CEO of additive manufacturing specialist Swissto12. But just five
years ago, the “use of 3D printed structures was largely experimental with
very few parts being flown in missions and payloads that had a healthy risk
appetite,ö according to de Rijk. Now, nearly all satellites built today h
ave
at least some 3D printed parts, he says, although most are still relatively
simple mechanical bracketing systems for keeping a spacecraft’s structure
together. More information may be found at: https://bit.ly/3g3sWod. [ANS
thanks Jason Rainbow at SpaceNews.com for the above information]
+ SpaceX rocket on collision course with moon: A rocket launched by Elon
Musk's space exploration company is on course to crash into the Moon and
explode. The Falcon 9 booster was launched in 2015 but after completing its
mission, it did not have enough fuel to return towards Earth and instead
remained in space. Astronomer Jonathan McDowell told BBC News it will be the
first known uncontrolled rocket collision with the Moon, but the effects
will be minor. The rocket was abandoned in high orbit seven years ago after
it completed a mission to send a space weather satellite on a million-mile
journey. It was part of Elon Musk's space exploration programme SpaceX, a
commercial company that ultimately aims to get humans living on other
planets. See https://bbc.in/3o4bpRa for the full story. [ANS thanks Georgina
Rannard of BBC News for the above information]
+ NASA to name astronauts this year for first Artemis moon mission: NASA
will announce later this year the four astronauts who will slingshot around
the far side of the moon on the Artemis lunar program’s first crew missio
n,
currently scheduled for launch in 2024, the head of the agency’s human sp
ace
exploration division recently said. The crew is expected to include three
U.S. fliers and one Canadian astronaut. The Artemis 2 mission will follow
two years after NASA’s Artemis 1 test flight, an unpiloted pathfinder
mission scheduled to launch no earlier than March from Kennedy Space Center
in Florida. Artemis 1 will be the first flight of NASA’s Space Launch
System, a heavy-lift rocket designed for lunar missions that’s been in
development for more than a decade. It will also be first trip by NASA’s
Orion crew capsule to the moon, following a demonstration flight that
orbited Earth in 2014. The goal of NASA’s Artemis program is to land
astronauts on the moon’s surface for the first time since the final Apollo
lunar mission in December 1972. The Artemis program’s first attempt to la
nd
a crew on the moon is penciled in for the Artemis 3 mission, scheduled for
2025, with a derivative of the Starship vehicle SpaceX’s is developing in
South Texas. More info is available at: https://bit.ly/3L0nGQG. [ANS thanks
Stephen Clark of Spaceflight Now for the above information]
+ Two New Satellite Distance Records Claimed: An initial distance record has
been claimed on HO-113. A65GC (@farangov) worked @F4DXV on 13-Jan-2022 at
19:52 UTC - a distance of 5,298 km. Earlier in the month a new distance
record has been claimed on AO-109. @ES4RM in KO49al completed a SSB QSO
with @F4DXV in JN04iu on 22-Dec-2021 at 15:24 UTC - a distance of 2,445 km.
See https://amsat.org/satellite-distance-records/. [ANS thanks Paul
Stoetzer, N8HM, Executive Vice President of the Radio Amateur Satellite
Corporation (AMSAT) and ANS Editor 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, Jack Spitznagel, KD4IZ
kd4iz [at] frawg dot org
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