- AMSAT-BB - mailman.amsat.org

Re: Logged 2 for CW Activity Day
by Paulo PV8DX 04 Feb '24

04 Feb '24

Hi Excellent activity TU 73 de Paulo PV8DX FJ92pt Em sáb., 3 de fev. de 2024 às 19:43, Wes Baden via AMSAT-BB < amsat-bb(a)amsat.org> escreveu: > Good participation this February's "First Saturday CW Activity Day." Let's > do it again on March 2. In the log = ES4RM, F5JLQ, KC3FQF, AF5CC, K5CIS, > N1MT, PV8DX, KN2K, K1PNQ, K6LG, AI5IN, WA6ARA. Also had a broken contact > with suffix -RIF (?). Great signals, as always, from ES4RM, F5JLQ and > PV8DX. Didn't hear 9A1CAL, F5RRS, N6UA, NS3L and EA3GFA, who all were > active on January 1. > > 73, > Wes NA1ME > FN54, Maine > > > On Sat, Feb 3, 2024 at 5:07 PM Mark via AMSAT-BB <amsat-bb(a)amsat.org> > wrote: > >> >> NA1ME in FN54 >> >> N6UA in DN71 >> >> Sorry Paulo, PV8DX I called but never heard you in there. Next time my >> friend. >> >> 73 >> Mark >> N1MT - EL88se >> >> >> ----------------------------------------------------------- >> >> Sent via AMSAT-BB(a)amsat.org. AMSAT-NA makes this open forum available >> to all interested persons worldwide without requiring membership. >> Opinions expressed >> are solely those of the author, and do not reflect the official views of >> AMSAT-NA. >> Acceptable Use and Privacy Policies available at >> https://www.amsat.org/about-amsat/ >> >> View archives of this mailing list at >> https://mailman.amsat.org/hyperkitty/list/[email protected] >> To unsubscribe send an email to amsat-bb-leave(a)amsat.org >> Manage all of your AMSAT-NA mailing list preferences at >> https://mailman.amsat.org > > > ----------------------------------------------------------- > > Sent via AMSAT-BB(a)amsat.org. AMSAT-NA makes this open forum available > to all interested persons worldwide without requiring membership. Opinions > expressed > are solely those of the author, and do not reflect the official views of > AMSAT-NA. > Acceptable Use and Privacy Policies available at > https://www.amsat.org/about-amsat/ > > View archives of this mailing list at > https://mailman.amsat.org/hyperkitty/list/[email protected] > To unsubscribe send an email to amsat-bb-leave(a)amsat.org > Manage all of your AMSAT-NA mailing list preferences at > https://mailman.amsat.org -- *73 Paulo PV8DX* LABRE/ARRL AMSAT-UK member ITU 12 - GRID FJ92pt www.labre-rr.org pv8dx(a)labre-rr.org pv8dx(a)arrl.net

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ANS-035 AMSAT News Service Weekly Bulletins
by Paul Stoetzer 04 Feb '24

04 Feb '24

*AMSAT *News Service*ANS-035* *February 4, 2024* In this edition: - AO-92 Reenters Earth's Atmosphere - The First Amateur Radio Station on the Moon - Lunar Excursion Vehicle (LEV-1) Amateur Telemetry Received - AMSAT CubeSatSim Beta Release – v1.3 - VUCC & DXCC Satellite Standing as of February 1, 2024 - Changes to AMSAT-NA TLE Distribution for February 2, 2024 - Request to Reconsider Decommissioning of IO-117 Under Evaluation by Italian Space Agency - ARISS News - Upcoming Satellite Operations - Hamfests, Conventions, Maker Faires, and Other Events - Satellite Shorts From All Over The AMSAT News Service bulletins are a free, weekly news and information service of AMSAT, The Radio Amateur Satellite Corporation. ANS publishes news related to Amateur Radio in Space including reports on the activities of a worldwide group of Amateur Radio operators who share an active interest in designing, building, launching and communicating through analog and digital Amateur Radio satellites. The news feed on https://www.amsat.org publishes news of Amateur Radio in Space as soon as our volunteers can post it. Please send any amateur satellite news or reports to: ans-editor [at] amsat.org You can sign up for free e-mail delivery of the AMSAT News Service Bulletins via the ANS List; to join this list see: https://mailman.amsat.org/postorius/lists/ans.amsat.org/ ------------------------------ AO-92 Reenters Earth's Atmosphere After just over six years in orbit, Fox-1D, designated as AMSAT-OSCAR 92 (AO -92), likely re-entered the Earth's atmosphere on February 3, 2024 (Space-Track had not issued the final decay message as of the time of this writing.) AO-92 was a 1U CubeSat developed and built by AMSAT. It carried a single-channel transponder for mode U/v in FM and also had an L-band converter (the AMSAT L-band downshifter experiment), which allowed the FM transponder to be switched to an uplink in the 23 cm band. In addition to the transponders, the satellite carried the following scientific and technical payloads: - High Energy Radiation CubeSat (HERCI) built by the University of Iowa - Camera Experiment built by Virginia Tech - MEMS GYRO Experiment built by Penn State-Erie The satellite had a single whip antenna for the 70 cm and 23 cm bands (uplink), as well as an antenna for the 2m band (downlink). AO-92 was launched on January 12, 2018 at 03:59 UTC on an Indian PSLV XL rocket, along with the main payloads Cartosat-2F, NovaSAR-S, and 31 other small satellites from the Satish Dhawan Space Center, India. At 05:17 UTC, the antennas were deployed over the North Pole and the satellite began to operate. At 05:28 UTC the first telemetry was received. On the 03:25 UTC pass on January 26, 2018, AMSAT Vice President – Engineering Jerry Buxton, N0JY, announced that AO-92 had been commissioned and formally turned the satellite over to AMSAT Operations. AMSAT Vice President – Operations Drew Glasbrenner, KO4MA, then declared that AO-92 was open for amateur use. *Rick Behma, VE4AMU, working AO-92 in Mode L/v with a Kenwood TM-941 mobile transceiver and Comet CYA-1216E yagi crossed with 2 meter Arrow II elements.* In addition to a very popular U/v transponder, the satellite provided a couple of unique capabilities. First was the L-band downshifter experiment, which was generally activated for 24 hours each Sunday while the satellite was able to support it. Pre-launch estimates suggested that approximately 100 watts ERP would be required to access the satellite, but much lower power outputs proved to be usable. Many stations operated through the satellite with radios such as the Alinco DJ-G7T at 1 watt of output into handheld antennas of between between 10 and 16 elements. At least one station reported accessing the satellite with just a simple whip antenna on 23 cm. The camera, developed by students at Virginia Tech, also proved to be popular and delivered many good pictures, with the last photos received on September 19, 2020. An archive of all of the photos captured by ground stations can be found at https://www.amsat.org/tlm/showImages.php?id=4. <https://www.amsat.org/tlm/showImages.php?id=4> The distance record on AO-92's U/v mode was 5,011 km - a transatlantic QSO between F4DXV and VE1VOX that took place on August 10, 2020. The record via the L/v mode was 4,202 km between OA4/XQ3SA and XE1MEX on June 3, 2020. By early 2021, the aging NiCd cells - having been purchased in the early 2010s along with the rest of the Fox-1 battery cells - had degraded to the point where the satellite was entering safe mode on every eclipse. It was rarely operational in recent months. The transponder was occasionally turned on, but usually defaulted into "Safe Mode" at the next eclipse. The last telemetry frame was received from the satellite on October 27, 2023 at 01:36 UTC. By every measure, AO-92 was a tremendously successful amateur radio satellite, providing educational and research benefits to AMSAT's university partners, as well as providing several years of reliable FM communication for amateurs. Its useful life far exceeded the average operational lifespan for commercial or educational CubeSats. *[ANS thanks Joe Fitzgerald, KM1P, AMSAT Orbital Elements Manager, and Paul Stoetzer, N8HM, AMSAT Executive Vice President, for the above information]* ------------------------------ The First Amateur Radio Station on the Moon *A rendering of the Smart Lander for Investigating Moon (SLIM) on the lunar surface. [Japan Aerospace Exploration Agency, image]* The Japan Aerospace Exploration Agency (JAXA) successfully landed their Smart Lander for Investigating Moon (SLIM) on January 19, 2024. Just before touchdown, SLIM released two small lunar surface probes, LEV-1 and LEV-2. LEV-2 collects data while moving on the lunar surface, and LEV-1 receives the data. The JAXA Ham Radio Club (JHRC), JQ1ZVI, secured amateur radio license JS1YMG for LEV-1, which has been transmitting Morse code on 437.41 MHz since January 19. The probe uses a 1 W UHF antenna with circular polarization and is transmitting "matters related to amateur business." Radio amateurs have been busy analyzing JS1YMG's signal, with Daniel Estévez's, EA4GPZ, blog <https://destevez.net/2024/01/trying-to-decode-lev-1/> introducing the method and extraction results for demodulating Morse code from the signal, as well as extracting the code string. It's unclear how long signals will be heard. JAXA has said that SLIM was not designed to survive a lunar night, which lasts about 14 days, and is due to return in a few days. SLIM was launched on September 6, 2023, and landed on January 19, 2024, with the mission of analyzing the composition of rocks to aid research about the origin of the moon. SLIM's landing made Japan the fifth country to achieve a soft touchdown on the moon. The landing was achieved with exceptional precision -- within 180 feet of its targeted touchdown location. *[ANS thanks ARRL News for the above information]* ------------------------------ *The 2024 Coins Are Here Now!Help Support GOLF and Fox Plus.**Join <https://www.amsat.org/join-the-amsat-presidents-club/> the AMSAT President’s Club today!* <https://www.amsat.org/join-the-amsat-presidents-club/2024-coin-both_586/#ma…> ------------------------------ Lunar Excursion Vehicle (LEV-1) Amateur Telemetry Received The Japan Aerospace Exploration Agency (JAXA) confirmed on January 20, 2024, that the Lunar Excursion Vehicle (LEV-1), a small robot deployed from the Smart Lander for Investigating Moon (SLIM), successfully conducted activities on the lunar surface. The telemetry data were sent directly from the small robot. According to telemetry data, after deployment from SLIM, LEV-1 executed planned leaping movements and direct communication with ground stations, including inter-robot test radio wave data transmission from the Transformable Lunar Robot (LEV-2, nicknamed "SORA-Q"). On the other hand, image acquisition on the lunar surface has not been confirmed as of now. Currently, LEV-1 has completed its planned operational period on the lunar surface, depleted its designated power, and is in a standby state on the lunar surface. While the capability to resume activity exists contingent on solar power generation from changes in the direction of the sun, efforts will be maintained to continue receiving signals from LEV-1. Both LEV-1 and LEV-2 have become Japan's first lunar exploration robots. Additionally, the small LEV-1 with a mass of 2.1 kg (including a 90g communication device), achieved successful direct communication with Earth from the moon. This is considered as the world's smallest and lightest case of direct data transmission from approximately 380,000 kilometers away. Furthermore, the accomplishment of LEV-1's leaping movements on the lunar surface, inter-robot communication between LEV-1 and LEV-2, and fully autonomous operations represent groundbreaking achievement. It would be regarded as a valuable technology demonstration for future lunar explorations, and the acquired knowledge and experience will be applied in upcoming missions. Moreover, the transmission of UHF band radio waves from LEV-1 as part of outreach efforts has encouraged participation from amateur radio operators globally, and we have been receiving reports of successful signal receptions. This initiative provided an opportunity for the public to be directly engaged in lunar exploration missions. We would like to extend our sincere gratitude to everyone involved in the LEV-1 mission. LEV-1 has an International Amateur Radio Union (IARU) coordinated downlink frequency of 437.410 MHz. A detailed report on receiving and decoding LEV-1 telemetry has been prepared by Daniel Estevez, EA4GPZ/M0HXM. It can be found at https://destevez.net/2024/01/trying-to-decode-lev-1/ An earlier summary of LEV-1 design and specifications is at https://robotics.isas.jaxa.jp/lev /LEV_HAM_Club.html. *[ANS thanks the Japan Aerospace Exploration Agency (JAXA) and Daniel Estevez, EA4GPZ/M0HXM, for the above information]* ------------------------------ AMSAT CubeSatSim Beta Release – v1.3 You might have heard about it or seen it at Hamvention or Symposium, but the official release of the new Beta CubeSatSim hardware and software is finally here!! The new beta PCB board set v1.3 is shown in Figure 1, the new board stack is shown in Figure 2, and the new frame and solar panels is in Figure 3. *Figure 1. AMSAT CubeSatSim Beta PCB Board Set. From left to right, battery board, STEM Payload board, and Solar board (the replacement for the Main board)* *Figure 2. AMSAT CubeSatSim Beta Board Stack* *Figure 3. AMSAT CubSatSim Beta Frame and Solar Panel* Here are some links to information about the Beta release: The software for the beta release is here: https://CubeSatSim.org/beta <https://cubesatsim.org/beta> The beta wiki instructions are here: https://CubeSatSim.org/wiki-beta <https://cubesatsim.org/wiki-beta> The beta Bill of Materials (BOM) is here: https://CubeSatSim.org/bom-beta <https://cubesatsim.org/bom-beta> The beta hardware files are here: https://CubeSatSim.org/hardware-beta <https://cubesatsim.org/hardware-beta> The beta frame STL files for 3D printing are here: https://github.com/alanbjohnston/CubeSatSim/tree/beta/hardware/frame/v1.3.2 Information about the latest beta software release is here: https://github.com/alanbjohnston/CubeSatSim/releases/tag/v1.3.2 The AMSAT CubeSatSim is a low-cost, fully functional open source model of a CubeSat nano-satellite. It has the following features: - Working solar panels and rechargeable batteries - Multi-channel voltage, current, and temperature telemetry transmitted in the Amateur Radio UHF band generated by a Raspberry Pi Zero single board computer - Telemetry decoding using AMSAT's FoxTelem software or APRS software - STEM Payload board with Raspberry Pi Pico microcontroller with sensors - Tape measure dipole or SMA antenna with integrated Low Pass Filter - 3D printed frame Here is a summary of the changes with the new beta hardware and software: - New FM transceiver module for better frequency stability and simple command and control receiver to change telemetry modes using RF - More modern and cheaper Raspberry Pi Pico micro controller on STEM Payload board - Easily connect additional sensors for the Pico or Pi using the Qwiic connector system (https://www.sparkfun.com/qwiic ) - SSTV camera images now display callsign and battery status overlay - Can be modified to fly as a balloon payload with 500mW FM output for SSTV, APRS, or CW transmissions with software support on Pico for a serial GPS module - Lower parts cost and easier to source. All parts can now be sourced from electronics distributors and Amazon including easy to find solar panels. New BOM uses Octopart electronic part inventory site with one click distributor ordering (https://CubeSatSim.org/bom-beta <https://cubesatsim.org/bom-beta>) - Redesigned for blue INA219 voltage and current sensors instead of more expensive purple ones - Battery board now has integrated voltage and current sensor - Simpler electrical power system with no boost converter or charge control modules - Kits can be built with through hole parts except for a few surface mount parts. Fully assembled boards will hopefully be available in the future using SMT parts - Transmit and receive frequencies easily configurable from default 434.9 MHz and 435 MHz *During this beta period, we ask for your help in testing the new hardware and software and making sure that all the instructions and documentation are accurate. To help with this, I am pleased to announce that past purchasers of the CubeSatSim v1 PCB board sets are eligible for a free beta v1.3.2 set of PCB boards. Just email me ku2y at arrl.net <http://arrl.net>! I will verify the order and ship you a new set of 3 blank boards. The boards will have the surface mount components already mounted. The first one hundred who contact me in the next three months will be eligible to receive them. For other orders, you will be able to choose between the v1 boards or the new beta v1.3.2 boards.* 73, Alan Johnston, PhD KU2Y AMSAT Vice President for Educational Relations P.S. AMSAT has CubeSatSim Loaners available to ship to your event or presentation or STEM outreach activity – just contact me if you have an upcoming event email at ku2y at arrl.net or on social media at @[email protected] <http://%[email protected]/> *[ANS thanks Alan Johnston, KU2Y, AMSAT Vice President - Educational Relations for the above information]* ------------------------------ VUCC & DXCC Satellite Standing as of February 1, 2024VUCC Satellite Award/Endorsement Change Summary January 01, 2024 to February 01, 2024 Call 1-Jan 1-Feb WC7V 1451 1457 N8RO 1401 1423 W5CBF 1224 1326 DL5GAC New 1300 DF2ET 1102 1200 KF7R 1075 1100 N0JE 1075 1100 N3GS 986 1038 OZ9AAR 900 1000 N8JCM New 917 EA2AA 875 883 KQ4DO 827 853 W8LR 825 841 W2GDJ 705 822 FG8OJ 737 801 VU2LBW 603 751 WD9EWK (DM43) 734 736 JL1SAM 601 700 N8MR 658 675 AF5CC 646 651 JG6CDH 553 605 N6UTC 551 600 WB7VUF 555 572 N5EKO 500 550 N3CAL 480 525 F6GLJ 400 501 N7ZO 350 501 DL6KBG 331 500 SA0UNX 362 463 LA6OP New 458 AD2DD 356 403 KF2T 111 399 N6PAZ 350 369 JH8RZJ New 328 AG4W 161 314 JI5USJ 236 301 AA0MZ 276 277 NJ2DX 100 260 IK8YTA 162 243 N7GR 205 226 KR7LD New 211 PY2YJ 150 210 WD9EWK (DM22) 198 200 WD9EWK (DM31) 187 195 IK0WRB 123 174 W0SX New 134 WK7G New 118 K7AXA New 104 SP7JS New 104 W6CZ New 103 YO6OEV New 103 BA7LVG New 100 Congratulations to the new VUCC holders! W6CZ is first VUCC Satellite holder from DM07 W0SX is first VUCC Satellite holder from DM37 LA6OP is First VUCC Satellite holder from JP67 YO6OEV is First VUCC Satellite holder from KN26 SP7JS is First VUCC Satellite holder from KO00 BA7LVG is First VUCC Satellite holder from OL63 DXCC Satellite Award/Endorsement Change Summary January 01, 2024 to February 01, 2024 Call 1-Jan 1-Feb HB9BZA 158 188 PS8ET 160 178 F4BKV 150 171 G4GIR 163 167 PA3FWP 127 157 EA2AA 154 156 I3BUI 142 155 AC4G 151 152 OZ9AAR 125 151 EA6VQ 127 145 HB9RYZ 141 145 IK4CIE 133 143 HB9GWJ 129 134 RA3DNC 107 131 W5CBF 100 130 DL2QB 100 120 LA0FA 102 109 N3GS 100 108 IK8YTA New 100 Congratulations to the new DXCC Satellite holders! IK8YTA is first DXCC Satellite holder from JN70 *[ANS thanks Jon Goering, N7AZ, for the above information]* ------------------------------ Changes to AMSAT-NA TLE Distribution for February 2, 2024 Two Line Elements or TLEs, often referred to as Keplerian elements or keps in the amateur community, are the inputs to the SGP4 standard mathematical model of spacecraft orbits used by most amateur tracking programs. Weekly updates are completely adequate for most amateur satellites. TLE bulletin files are updated Thursday evenings around 2300 UTC, or more frequently if new high interest satellites are launched. More information may be found at https://www.amsat.org/keplerian-elements-resources/ This week there are no additions or deletions to the AMSAT TLE distribution. *[ANS thanks Joe Fitzgerald, KM1P, AMSAT Orbital Elements Manager, for the above information]* ------------------------------ *Need new satellite antennas? Purchase an M2 LEO-Pack from the **AMSAT Store! <https://amsat.org/product-category/hardware/>**When you purchase through **AMSAT, a portion of the proceeds goes towards **Keeping Amateur Radio in Space.* ------------------------------ Request to Reconsider Decommissioning of IO-117 Under Evaluation by Italian Space Agency On Thursday, January 25, 2024 S5Lab posted on X that the GreenCube (IO-117) Digipeater would be permanently deactivated on February 5th. Designed and developed by students of Sapienza University of Rome, IO-117 is the first satellite to carry an amateur radio payload into a Medium Earth Orbit (MEO) of approximately 6,000 km. The message from S5Lab read: *Dear Friends,* *After one year and a half of operations, it is time to conclude the GreenCube operations with the planned de-commissioning activities. After the conclusion of the nominal experiment and with the digipeater payload active for more than one year, we will perform the passivation operations for the satellite.* *The planned passivation operations will be executed on Monday, 5 February 2024, at 00:00 UTC. From that day, GreenCube will be completely passivated and the digipeater will be switched off for good.* *We want to thank everyone that endorsed, supported or participated in the mission and the radio amateur community that enthusiastically became a true part of our project. We hope that GreenCube will somehow be part of your memories of radio amateurs, space engineering enthusiasts, and we hope to involve you soon in many more adventures.* *Thanks once again for the unbelievable memories shared together… See you soon!* *The GreenCube Team at S5Lab* That afternoon, AMSAT sent a letter to S5Lab <https://www.amsat.org/amsat-responds-planned-decommissioning-io-117-greencu…> expressing the organization's desire to leverage our decades of experience and work with S5Lab, AMSAT Italia, other AMSAT organizations, and the amateur satellite community at large to overcome any obstacles, regulatory or otherwise, to keeping IO-117 in service for as long as possible. AMSAT-DL, AMSAT-F, and other amateur satellite organizations also expressed similar sentiments. Peter Goodhall, 2M0SQL, began a petition on change.org <https://www.change.org/p/save-the-greencube-satellite-digipeater> that garnered over 1,500 signatures from amateur radio operators around the world in one week. On the afternoon of Friday, February 2, 2024, AMSAT Italia made the following announcement: *AMSAT Italia would like to inform the amateur community that its request to the Italian Space Agency, the owner of the GREENCUBE satellite, to reconsider its decision of decommissioning the satellite is under evaluation.* *Waiting for its decision, IO-117 is still operational.* *The GreenCube satellite was born as a scientific experiment placed in MEO orbit which successfully concluded its mission.* *IO-117 is the HAM Radio part of the satellite consisting of a digipeter which was promoted by AMSAT Italia and coordinated by IARU-R1.* *At the moment AMSAT Italia is committed to promoting the continuation of the mission for the HAM Radio part of Greencube.* *AMSAT Italia BoD* During its lifetime, IO-117 has proved to be a popular resource, allowing amateurs all over the world to obtain ARRL's Worked All States (WAS) and DX Century Club (DXCC) awards via satellite and to boost their VHF/UHF Century Club (VUCC) grid totals. A strong presence by Japanese amateurs has allowed many to work all the Japanese prefectures. A few DXpeditions, such as TX5S to Clipperton Island, have also brought gear for IO-117 along and provided rare DX entities via satellite. Multiple future DXpeditions also plan IO-117 activities. AMSAT is hopeful that the satellite's lifetime can be extended. *[ANS thanks AMSAT-UK, AMSAT-DL, AMSAT-IT, AMSAT, Peter Goodhall, 2M0SQL, and S5Lab 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. *Lilburn Elementary School, Lilburn, GA, direct via K4RGK* The ISS callsign is presently scheduled to be NA1SS The scheduled crewmember is Jasmin Moghbeli KI5WSL The ARISS mentor is K4RGK Contact is go for: Wed 2024-02-07 14:24:10 UTC 57 deg *School of Telecommunications Engineering, ETSIT Valencia (Universitat Politecnica de Valencia), Valencia, Spain, direct via EA5RKP* The ISS callsign is presently scheduled to be OR4ISS The scheduled crewmember is Loral O’Hara KI5TOM The ARISS mentor is IKØUSO Contact is go for: Fri 2024-02-09 08:12:46 UTC 31 deg *School TBD, Russia, direct via TBD* The ISS callsign is presently scheduled to be RSØISS The scheduled crewmember is Nikolay Chub The ARISS mentor is RV3DR Contact is go for 2024-02-15 08:20 UTC The Service Module radio is temporarily stowed. As always, if there is an EVA, a docking, or an undocking; the ARISS radios are turned off as part of the safety protocol. 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. 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 OperationsIO-117!! JR5JAQ/6 will be QRV from *PM53* and *PM62* in *Oita prefecture* for a few days. He will also be active from *PM62* in *Miyazaki prefecture* later in the week. Check hams.at for individual pass times. JS3KKT/3 will be QRV from *PM74* (prefecture unknown) just one day before the planned passivation of Greencube. Refer to hams.at for additional info. 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]* ------------------------------ * Want to fly the colors on your own grid expedition?* Get an AMSAT car flag and other neat stuff from our Zazzle store <https://www.zazzle.com/store/amsat_gear>! 25% of the purchase price of each product goes towards Keeping Amateur Radio in Space ------------------------------ 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. 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 *Orlando HamCation 2024* Friday February 9th through Sunday February 11th, 2024 Central Florida Fairgrounds and Expo Park 4603 West Colonial Drive Orlando, Florida 32808 https://www.hamcation.com *40th Anniversary Celebration of the Positive Impact of Amateur Radio on Human Spaceflight* Thursday February 22nd through Saturday February 24th, 2024 Center for Space Education: Astronauts Memorial Foundation Kennedy Space Center, M6-306 405 State Road, FL 32899 https://www.ariss.org/overview.html *2024 CubeSat Developer’s Workshop* April 23-25, 2024 San Luis Obispo, CA https://www.cubesatdw.org/ *Dayton Hamvention 2024* Friday May 17th through Sunday May 19th, 2024 Greene County Fairgrounds and Expo Center 120 Fairground Road Xenia, OH 45385 https://hamvention.org *[ANS thanks Clint Bradford, K6LCS, and AMSAT for the above information]* ------------------------------ Satellite Shorts from All Over + NASA announced the crew assignments on January 31 for the SpaceX Crew-9 mission to the International Space Station. They will join Expedition 71 and 72 crew members no earlier than August, and will arrive at the space station for a short duration handover with NASA's SpaceX Crew-8. Launching aboard the Dragon spacecraft will be NASA astronauts Commander Zena Cardman, Pilot Nick Hague, KG5TMV, and Mission Specialist Stephanie Wilson, KD5DZE, and Roscosmos cosmonaut Mission Specialist Aleksandr Gorbunov. The four crew members are preparing to conduct a wide-ranging set of operational and research activities, including ARISS contacts. (ANS thanks NASA for the above information) + After more than 3 years in orbit, AO-109 remains operational and usable for QSOs using modes such as FT4 despite extremely low power output. SSB QSOs are also possible with high gain receive antennas. Due to a failed final power amplifier transistor, the total output power of AO-109 is approximately 8 mW. + YouTube channel Ham Radio Crash Course has featured IO-117 in two recent videos. https://www.youtube.com/watch?v=FjW3XOKCmBo and https://www.youtube.com/watch?v=mn_qPVoue3A ------------------------------ 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,* *Paul Stoetzer, N8HM* *n8hm [at] amsat.org <http://amsat.org>* *ANS is a service of AMSAT, the Radio Amateur Satellite Corporation, 712 H Street NE, Suite 1653, Washington, DC 20002*

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Re: Logged 2 for CW Activity Day
by Wes Baden 03 Feb '24

03 Feb '24

Good participation this February's "First Saturday CW Activity Day." Let's do it again on March 2. In the log = ES4RM, F5JLQ, KC3FQF, AF5CC, K5CIS, N1MT, PV8DX, KN2K, K1PNQ, K6LG, AI5IN, WA6ARA. Also had a broken contact with suffix -RIF (?). Great signals, as always, from ES4RM, F5JLQ and PV8DX. Didn't hear 9A1CAL, F5RRS, N6UA, NS3L and EA3GFA, who all were active on January 1. 73, Wes NA1ME FN54, Maine On Sat, Feb 3, 2024 at 5:07 PM Mark via AMSAT-BB <amsat-bb(a)amsat.org> wrote: > > NA1ME in FN54 > > N6UA in DN71 > > Sorry Paulo, PV8DX I called but never heard you in there. Next time my > friend. > > 73 > Mark > N1MT - EL88se > > > ----------------------------------------------------------- > > Sent via AMSAT-BB(a)amsat.org. AMSAT-NA makes this open forum available > to all interested persons worldwide without requiring membership. Opinions > expressed > are solely those of the author, and do not reflect the official views of > AMSAT-NA. > Acceptable Use and Privacy Policies available at > https://www.amsat.org/about-amsat/ > > View archives of this mailing list at > https://mailman.amsat.org/hyperkitty/list/[email protected] > To unsubscribe send an email to amsat-bb-leave(a)amsat.org > Manage all of your AMSAT-NA mailing list preferences at > https://mailman.amsat.org

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Logged 2 for CW Activity Day
by Mark 03 Feb '24

03 Feb '24

NA1ME in FN54 N6UA in DN71 Sorry Paulo, PV8DX I called but never heard you in there. Next time my friend. 73 Mark N1MT - EL88se

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TEVEL-3
by david.greenberg 03 Feb '24

03 Feb '24

Hello All, TEVEL-3 FM transponder has been activated, starting from today 03.02.24 18:59U for 72 hours.73,David 4X1DGנשלח מה-Galaxy שלי

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Upcoming ARISS Contact Schedule as of 2024-02-03 17:30 UTC
by aj9n＠aol.com 03 Feb '24

03 Feb '24

Upcoming ARISS Contact Schedule as of 2024-02-03 17:30 UTC Quick list of scheduled contacts and events: Lilburn Elementary School, Lilburn, GA, direct via K4RGK The ISS callsign is presently scheduled to be NA1SS The downlink frequency is presently scheduled to be 145.800 MHz The latest information on the operation mode can be found at https://www.ariss.org/current-status-of-iss-stations.html The scheduled crewmember is Jasmin Moghbeli KI5WSL The ARISS mentor is K4RGK Contact is go for: Wed 2024-02-07 14:24:10 UTC 57 deg School of Telecommunications Engineering, ETSIT Valencia (Universitat Politecnica de Valencia), Valencia, Spain, direct via EA5RKP The ISS callsign is presently scheduled to be OR4ISS The downlink frequency is presently scheduled to be 145.800 MHz The latest information on the operation mode can be found at https://www.ariss.org/current-status-of-iss-stations.html The scheduled crewmember is Loral O’Hara KI5TOM The ARISS mentor is IKØUSO Contact is go for: Fri 2024-02-09 08:12:46 UTC 31 deg Note the crewmember and event date change is due to a scheduling conflict. School TBD, Russia, direct via TBD The ISS callsign is presently scheduled to be RSØISS The downlink frequency is presently scheduled to be 145.800 MHz The latest information on the operation mode can be found at https://www.ariss.org/current-status-of-iss-stations.html The scheduled crewmember is Nikolay Chub The ARISS mentor is RV3DR Contact is go for 2024-02-15 08:20 UTC Are you attending the 2024 Orlando Hamcation? If you are, then stop by the ARISS booth as well as the AMSAT booth to say hi. (***) The crossband repeater continues to be active. If any crewmember is so inclined, all they have to do is pick up the microphone, raise the volume up, and talk on the crossband repeater. So give a listen, you just never know. Note, all times are approximate. It is recommended that you do your own orbital prediction or start listening about 10 minutes before the listed time. All dates and times listed follow International Standard ISO 8601 date and time format YYYY-MM-DD HH:MM:SS The complete schedule page has been updated as of 2024-02-03 17:30 UTC. (***) Here you will find a listing of all scheduled school contacts, and questions, other ISS related websites, IRLP and Echolink websites, and instructions for any contact that may be streamed live. https://www.amsat.org/amsat/ariss/news/arissnews.rtf https://www.amsat.org/amsat/ariss/news/arissnews.txt The successful school list has been updated as of 2024-02-01 20:00 UTC. https://www.amsat.org/amsat/ariss/news/Successful_ARISS_schools.rtf ####################################################################################################################################### Comments on making general contacts I have been seeing a lot of traffic on Facebook and I suspect on other social media sites with people asking why they are not hearing the crew make general contacts. First off the crew is very busy on the ISS and they simply may not have the time to just pick up the microphone and talk. Also, one needs to be aware of their normal daily schedule. I have listed below the constraints that we at ARISS have to follow in order to schedule the school contacts. Hopefully this will help you better schedule your opportunities. Typical daily schedule Wakeup to Workday start= 1.5 hours Workday start to Workday end=12 hours Workday end to Sleep= 2 hours Sleep to wakeup= 8.5 hours The crew's usual waking period is 07:30 – 19:30 UTC. The most common times to find a crew member making casual periods are about one hour after waking up and about an hour before sleeping, when they have personal time. They're usually free most of the weekend, as well. SSTV events are not that often. So please check out https://www.ariss.org/ for the latest information or watch for the ARISS announcements. And don’t forget that the packet system is sometimes active. Check the status at https://www.ariss.org/ or http://www.issfanclub.eu to see if the packet system is active or not. As always, if there is an EVA, a docking, or an undocking; the ARISS radios are turned off as part of the safety protocol. The latest information on the operation mode can be found at https://www.ariss.org/current-status-of-iss-stations.html The latest list of frequencies in use can be found at https://www.ariss.org/contact-the-iss.html ######################################################################################################################################## A multi-point telebridge contact means that each student will be on the telebridge from their own home. **************************************************************************************************************************************** ARISS is very aware of the impact that COVID-19 is having on schools and the public in general. As such, we may have last minute cancellations or postponements of school contacts. As always, I will try to provide everyone with near-real-time updates. Watch for future COVID-19 related announcements at https://www.ariss.org/ The following schools have now been postponed or cancelled due to COVID-19: Postponed: No new schools Cancelled: No new schools **************************************************************************************************************************************** The ARISS webpage is at https://www.ariss.org/ Note that there are links to other ARISS websites from this site. The main page for Applying to Host a Scheduled Contact may be found at https://www.ariss.org/apply-to-host-an-ariss-contact.html +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ ARISS Contact Applications (United States) Call for Proposals The next proposal window for US schools and educational organizations to host an Amateur Radio contact with a crew member on board the ISS opens October 1, 2023 for contacts to be scheduled for July 1, 2024 – December 31, 2024. This proposal window has been extended and is now due to ARISS by February 29, 2024 at 11:59 PM Pacific Time. (***) Proposal information and more details such as expectations, proposal guidelines and the proposal form can be found at www.ariss.org. Find more information and proposal instructions, visit the ARISS-USA website at: https://ariss-usa.org/hosting-an-ariss-contact-in-the-usa/ Please direct any questions to ariss.us.education(a)gmail.com. For future proposal information and more details such as expectations, proposal guidelines and proposal form, and dates and times of Information Webinars, go to www.ariss.org. About ARISS: Amateur Radio on the International Space Station (ARISS) is a cooperative venture of international amateur radio societies and the space agencies that support the International Space Station (ISS). In the United States, sponsors are the Radio Amateur Satellite Corporation (AMSAT), the American Radio Relay League (ARRL), the ISS National Lab and National Aeronautics and Space Administration (NASA). The primary goal of ARISS is to promote exploration of science, technology, engineering, and mathematics (STEAM) topics by organizing scheduled contacts via amateur radio between crew members aboard the ISS and students in classrooms or public forms. Before and during these radio contacts, students, educators, parents, and communities learn about space, space technologies, and amateur radio. For more information, see www.ariss.org. +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ ARISS Contact Applications (Europe, Africa and the Middle East) Schools and Youth organizations in Europe, Africa and the Middle East interested in setting up an ARISS radio contact with an astronaut on board the International Space Station are invited to submit an application from September to October and from February to April. Please refer to details and the application form at www.ariss-eu.org/school-contacts. Applications should be addressed by email to: school.selection.manager(a)ariss-eu.org ARISS Contact Applications (Canada, Central and South America, Asia and Australia and Russia) +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ Organizations outside the United States can apply for an ARISS contact by filling out an application. Please direct questions to the appropriate regional representative listed below. If your country is not specifically listed, send your questions to the nearest ARISS Region listed. If you are unsure which address to use, please send your question to the ARISS-Canada representative; they will forward your question to the appropriate coordinator. For the application, go to: https://www.ariss.org/ariss-application.html. ARISS-Canada and the Americas, except USA: Steve McFarlane, VE3TBD email to: ve3tbd(a)gmail.com ARISS-Japan, Asia, Pacific and Australia: Satoshi Yasuda, 7M3TJZ email to: ariss(a)iaru-r3.org, Japan Amateur Radio League (JARL) https://www.jarl.org/ ARISS-Russia: Soyuz Radioljubitelei Rossii (SRR) https://srr.ru/ +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ ARISS is always glad to receive listener reports for the above contacts. ARISS thanks everyone in advance for their assistance. Feel free to send your reports to aj9n(a)amsat.org or aj9n(a)aol.com. Listen for the ISS on the downlink of 145.8Ø MHz unless otherwise noted. ******************************************************************************* All ARISS contacts are made via the Kenwood radio unless otherwise noted. ******************************************************************************* Several of you have sent me emails asking about the RAC ARISS website and not being able to get in. That has now been changed to https://www.ariss.org/ Note that there are links to other ARISS websites from this site. **************************************************************************** Looking for something new to do? How about receiving DATV from the ISS? Please note that the HamTV system has been brought back to earth for troubleshooting. Please monitor ARISS-EU or ARISS-ON for the very latest news on the troubleshooting efforts. If interested, then please go to the ARISS-EU website for complete details. Look for the buttons indicating Ham Video. http://www.ariss-eu.org/ If you need some assistance, ARISS mentor Kerry N6IZW, might be able to provide some insight. Contact Kerry at kbanke(a)sbcglobal.net The HamTV webpage: https://www.amsat-on.be/hamtv-summary/ **************************************************************************** ARISS congratulates the following mentors who have now mentored over 100 schools: Sergey RV3DR with 222 Francesco IKØWGF with 153 Satoshi 7M3TJZ with 150 Gaston ON4WF with 124 Peter IN3GHZ with 118 Steve VE3TBD with 106 **************************************************************************** The webpages listed below were all reviewed for accuracy. Out of date webpages were removed, and new ones have been added. If there are additional ARISS websites I need to know about, please let me know. Total number of ARISS ISS to earth school events is 1691. Each school counts as 1 event. Total number of ARISS ISS to earth school contacts is 1597. Each contact may have multiple schools sharing the same time slot. Total number of ARISS supported terrestrial contacts is 48. Please feel free to contact me if more detailed statistics are needed. ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ The following US states and entities have never had an ARISS contact: South Dakota, American Samoa, Guam, Northern Marianas Islands, and the Virgin Islands. ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ QSL information may be found at: https://www.ariss.org/qsl-cards.html ISS callsigns: DPØISS, FXØISS, GB1SS, IRØISS, NA1SS, OR4ISS, RSØISS **************************************************************************** Frequency chart for packet, voice, and crossband repeater modes showing Doppler correction as of 2005-07-29 04:00 UTC https://www.amsat.org/amsat/ariss/news/ISS_frequencies_and_Doppler_correcti… Check out the Zoho reports of the ARISS contacts https://reports.zoho.com/ZDBDataSheetView.cc?DBID=412218000000020415 **************************************************************************** SpaceX Crew-7 on orbit Jasmin Moghbeli KI5WSL Andreas Mogensen KG5GCZ Satoshi Furukawa Konstantin Borisov Exp. 70 on orbit Oleg Kononenko Nikolay Chub Loral O’Hara KI5TOM Axiom AX-3 crew on orbit Michael López-Alegría Walter Villadei IUØRWB Alper Gezeravcı KJ5DIY/TA5TRU Marcus Wandt KJ5COO **************************************************************************** 73, Charlie Sufana AJ9N One of the ARISS operation team mentors

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Re: BeliefSat-0 orbital data restored, reception reports requested
by Jim White 03 Feb '24

03 Feb '24

Another note that may be of interest. In the 1990 Microsats, the 256kb of ram was a RAD tolerant component. It didn't suffer from degradation due to total dose, but it was susceptible to single event upsets, which we always saw when the satellites passed through the South Atlantic Anomaly (and occasionally over the poles). Those chips stored 10 bits for an 8 bit byte and when reading it you got the right value even though one bit had flipped. But that bit stayed flipped until it was read then written. So the low level OS code (BEKTEK kernal from Harold Price) "washed" blocks of memory fast enough that all 256k got done in about 10 minutes. The idea was to be sure the errors were washed out before the next pass through the SAA. But if two bits in the same byte got flipped the wrong value would be fetched. As I recall we think that only happened a couple of times in the two that I managed for about 10 years, but of course there was no way to know for sure. Since that memory stored the code it hung when there was a double bit error. There were registers available that could be pulled and downloaded that showed where each flipped bit was. The idea there was to see if a chip or cell in a chip was experiencing more bit errors. I looked at years of that data and there was no pattern to bit flips. There was a hardware watchdog circuit. Very simple. A 2N2222 (off the shelf), a cap and a resistor that formed a time delay circuit. The low level OS code "stroked" it every few ms. That is, a GPIO pin on the processor was pulsed to push a bit of charge into the timer. That code was a bit higher in the OS code. If any of the tasks hung, the bit didn't get stroked, the delay circuit ran out of charge and pulled the reset pin of the processor low. We then reloaded all the OS and tasks. After something like 4 years the code began to reset after only a few hours or days. Harold tracked that down to the watchdog timer resetting the processor. He figured out the 2N2222 was degraded from radiation so the circuit wasn't holding the voltage up as long. He moved the I/O pin pulsing function to a routine that ran about 10 times more often. That kept those birds going for another 10 years or so. One huge and I think innovative feature was that a task could be unloaded and new one uploaded and started without having to reload the rest of the tasks. We did that hundreds of times. We could change the code of a task, unload the running version, upload and start the new, usually all in a single pass. Note that tasks were typically about 10k bytes, not the bloated Windoz flavored stuff that is used today. The larger (2.5 Mb if I remember right) memory used for the store and forward messages used Huffman encoding. Sort of the same thing but the checking was done in software and that memory wasn't washed. That memory used round robin storage so old messages got deleted when space was needed for new ones. The average message life, when lots of users were on, was probably about 10 days. As long as there were only single bit errors in a byte the fetched bytes were good. But double bit errors resulted in bad data - an occasional bad character in a message. But.. after six months or so the File Allocation Table for the messages files would get corrupted from double bit errors and the file system task would hang. If it just couldn't fetch messages we could unload and reload it. But most of the time it hung to the point where it would not take the command to unload itself and we had to dump and reload all the code. That took a day or two of passes. Another innovation I don't see in use today: We could send a "fire code" to reset the satellite at any time. It was a string of bits (not a valid HDLC frame) that was decoded by a single chip, that then pulled the processor reset pin low. It never failed to work. That was a Lyle Johnson invention. So lots of innovations in those birds, both hardware and software. Jim On 2/2/2024 6:50 PM, David Spoelstra via AMSAT-BB wrote: > Zach N0ZGO - > > I am fascinated by your comment about the processor "has features > which make it more robust". Can you elaborate please? > > And to everyone else that posted about the different processors used, > thanks! I was a HW/SW engineer for years and developed several > in-circuit emulators for Tektronix. Later in my career I taught > microcontroller programming at college. I passed some of your info to > the current professor there to inspire the students. > > -David, N9KT > > > On Thu, Feb 1, 2024 at 11:27 AM Zach Metzinger via AMSAT-BB > <amsat-bb(a)amsat.org> wrote: > > On 2/1/24 10:07, Paul Stoetzer via AMSAT-BB wrote: > > AMSAT's PACSAT board - a modern version of the microsats - uses a > > TMS-570, which is an ARM Cortex-R, running at up to 160 MHz with > 1280K > > of flash storage and 192K of RAM. MRAM will be used for BBS storage. > > The TI TMS570 "Hercules" processor is also used on the Golf RT-IHU, > which will be the successor to the STM32 IHU used on the Fox series. > > It is important to note that the low-Earth orbit environment is much > more forgiving than MEO and HEO. Radiation tolerance is an important > factor when choosing hardware for these higher orbits, which drove > the > selection of this specific COTS (common off-the-shelf) processor. > It is > not a SOI (silicon on insulator) radiation-hard processor, but has > features which make it more robust than, say, your off-the-shelf > STM32 > or ATMega64. > > 73, > > --- Zach > N0ZGO > > ----------------------------------------------------------- > > Sent via AMSAT-BB(a)amsat.org <http://amsat.org>. AMSAT-NA makes > this open forum available > to all interested persons worldwide without requiring membership. > Opinions expressed > are solely those of the author, and do not reflect the official > views of AMSAT-NA. > Acceptable Use and Privacy Policies available at > https://www.amsat.org/about-amsat/ > > View archives of this mailing list at > https://mailman.amsat.org/hyperkitty/list/[email protected] > To unsubscribe send an email to amsat-bb-leave(a)amsat.org > <http://amsat.org> > Manage all of your AMSAT-NA mailing list preferences at > https://mailman.amsat.org > > > ----------------------------------------------------------- > > Sent via AMSAT-BB(a)amsat.org. AMSAT-NA makes this open forum available > to all interested persons worldwide without requiring membership. Opinions expressed > are solely those of the author, and do not reflect the official views of AMSAT-NA. > Acceptable Use and Privacy Policies available athttps://www.amsat.org/about-amsat/ > > View archives of this mailing list at > https://mailman.amsat.org/hyperkitty/list/[email protected] > To unsubscribe send an email to amsat-bb-leave(a)amsat.org > Manage all of your AMSAT-NA mailing list preferences athttps://mailman.amsat.org

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Re: BeliefSat-0 orbital data restored, reception reports requested
by David Spoelstra 03 Feb '24

03 Feb '24

Zach N0ZGO - I am fascinated by your comment about the processor "has features which make it more robust". Can you elaborate please? And to everyone else that posted about the different processors used, thanks! I was a HW/SW engineer for years and developed several in-circuit emulators for Tektronix. Later in my career I taught microcontroller programming at college. I passed some of your info to the current professor there to inspire the students. -David, N9KT On Thu, Feb 1, 2024 at 11:27 AM Zach Metzinger via AMSAT-BB < amsat-bb(a)amsat.org> wrote: > On 2/1/24 10:07, Paul Stoetzer via AMSAT-BB wrote: > > AMSAT's PACSAT board - a modern version of the microsats - uses a > > TMS-570, which is an ARM Cortex-R, running at up to 160 MHz with 1280K > > of flash storage and 192K of RAM. MRAM will be used for BBS storage. > > The TI TMS570 "Hercules" processor is also used on the Golf RT-IHU, > which will be the successor to the STM32 IHU used on the Fox series. > > It is important to note that the low-Earth orbit environment is much > more forgiving than MEO and HEO. Radiation tolerance is an important > factor when choosing hardware for these higher orbits, which drove the > selection of this specific COTS (common off-the-shelf) processor. It is > not a SOI (silicon on insulator) radiation-hard processor, but has > features which make it more robust than, say, your off-the-shelf STM32 > or ATMega64. > > 73, > > --- Zach > N0ZGO > > ----------------------------------------------------------- > > Sent via AMSAT-BB(a)amsat.org. AMSAT-NA makes this open forum available > to all interested persons worldwide without requiring membership. Opinions > expressed > are solely those of the author, and do not reflect the official views of > AMSAT-NA. > Acceptable Use and Privacy Policies available at > https://www.amsat.org/about-amsat/ > > View archives of this mailing list at > https://mailman.amsat.org/hyperkitty/list/[email protected] > To unsubscribe send an email to amsat-bb-leave(a)amsat.org > Manage all of your AMSAT-NA mailing list preferences at > https://mailman.amsat.org >

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CW Activity Day
by Mike Herr 02 Feb '24

02 Feb '24

I'm planning on being there from DM15

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ANS-033 AMSAT News Service Special Bulletin - Request to Reconsider Decommissioning of IO-117 Under Evaluation by Italian Space Agency
by Paul Stoetzer 02 Feb '24

02 Feb '24

*AMSAT *News Service Special Bulletin*ANS-033* *February 2, 2024* In this edition: - Request to Reconsider Decommissioning of IO-117 Under Evaluation by Italian Space Agency 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/ ------------------------------ Request to Reconsider Decommissioning of IO-117 Under Evaluation by Italian Space Agency Moments ago, the AMSAT News Service received the following announcement from AMSAT Italia regarding IO-117 (GreenCube): *AMSAT Italia would like to inform the amateur community that its request to the Italian Space Agency, the owner of the GREENCUBE satellite, to reconsider its decision of decommissioning the satellite is under evaluation.* *Waiting for its decision, IO-117 is still operational.* *The GreenCube satellite was born as a scientific experiment placed in MEO orbit which successfully concluded its mission.* *IO-117 is the HAM Radio part of the satellite consisting of a digipeter which was promoted by AMSAT Italia and coordinated by IARU-R1.* *At the moment AMSAT Italia is committed to promoting the continuation of the mission for the HAM Radio part of Greencube.* *AMSAT Italia BoD* *[ANS thanks AMSAT Italia 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 Contributing Editor,* *Paul Stoetzer, N8HM* *n8hm [at] amsat.org <http://amsat.org>* *ANS is a service of AMSAT, the Radio Amateur Satellite Corporation, 712 H Street NE, Suite 1653, Washington, DC 20002*

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