AMSAT News Service ANS-341 December 7, 2025 In this edition: * KSLV-II Mission Deploys 13 Satellites, Including New Amateur Radio Payloads * ISS Deployment Added Five New Education-Focused Amateur Radio Missions * ARISS Moves Series 30 SSTV Transmissions to RS-38S After Equipment Issue * GridMasterMap Satellite Top 100 Rovers December 2025 Rankings * Changes to AMSAT-NA TLE Distribution for December 5, 2025 * ARISS News * AMSAT Ambassador Activities * Satellite Shorts From All Over The AMSAT® News Service bu ...Continue Reading

Space Weather Message Code: ALTXMF Serial Number: 504 Issue Time: 2025 Dec 06 2041 UTC ALERT: X-Ray Flux exceeded M5 Threshold Reached: 2025 Dec 06 2037 UTC NOAA Scale: R2 - Moderate NOAA Space Weather Scale descriptions can be found at www.swpc.noaa.gov/noaa-scales-explanation Potential Impacts: Area of impact centered on sub-solar point on the sunlit side of Earth. Extent of blackout of HF (high frequency) radio communication dependent upon current X-ray Flux intensity. For real-time in ...Continue Reading

Space Weather Message Code: ALTEF3 Serial Number: 3572 Issue Time: 2025 Dec 06 1234 UTC CONTINUED ALERT: Electron 2MeV Integral Flux exceeded 1000pfu Continuation of Serial Number: 3571 Begin Time: 2025 Dec 05 1530 UTC Yesterday Maximum 2MeV Flux: 1426 pfu Potential Impacts: Satellite systems may experience significant charging resulting in increased risk to satellite systems.Thank you for using the Product Subscription Service. If you would like to remove a product subscription or updat ...Continue Reading

Space Weather Message Code: ALTEF3 Serial Number: 3571 Issue Time: 2025 Dec 05 1545 UTC ALERT: Electron 2MeV Integral Flux exceeded 1000pfu Threshold Reached: 2025 Dec 05 1530 UTC Station: GOES-19 Potential Impacts: Satellite systems may experience significant charging resulting in increased risk to satellite systems.Thank you for using the Product Subscription Service. If you would like to remove a product subscription or update the personal information in your account, go to the Product ...Continue Reading

SB KEPS @ AMSAT $ORB25339.1 2Line Orbital Elements 25339.AMSAT QST de W1STR AMSAT Orbital Elements for Amateur Satellites in TLE Format From Orbital Analysis Office New England Sci-Tech STEM Education Center Natick MA December 05, 2025 To all radio amateurs These element sets describe the orbits of various satellites in use by the amateur radio community. For details see: www.amsat.org/keplerian-elements-formats/ A daily update of element sets is available at: www.amsat.org/tle/daily-bulletin.txt or wit ...Continue Reading

Note regarding CEVROSAT1 Provisional ID 98526: Resource constraints at USSF 18SDS are evidently contining to prevent generation of TLE for this satellite. The element set is unusally poor, expect the satellite to pass a minute or more away from predictions. This element set, provided by the SatNOGS network and likely based on orbital insertion data from the launch provider, is being used to successfully receive data from the spacecraft despite innacuracies. The following satellites have been added to this week's ...Continue Reading

Space Weather Message Code: ALTXMF Serial Number: 503 Issue Time: 2025 Dec 04 0250 UTC ALERT: X-Ray Flux exceeded M5 Threshold Reached: 2025 Dec 04 0248 UTC NOAA Scale: R2 - Moderate NOAA Space Weather Scale descriptions can be found at www.swpc.noaa.gov/noaa-scales-explanation Potential Impacts: Area of impact centered on sub-solar point on the sunlit side of Earth. Extent of blackout of HF (high frequency) radio communication dependent upon current X-ray Flux intensity. For real-time in ...Continue Reading

Space Weather Message Code: ALTEF3 Serial Number: 3570 Issue Time: 2025 Dec 03 0706 UTC CONTINUED ALERT: Electron 2MeV Integral Flux exceeded 1000pfu Continuation of Serial Number: 3569 Begin Time: 2025 Nov 25 1450 UTC Yesterday Maximum 2MeV Flux: 8535 pfu Potential Impacts: Satellite systems may experience significant charging resulting in increased risk to satellite systems.Thank you for using the Product Subscription Service. If you would like to remove a product subscription or updat ...Continue Reading

Space Weather Message Code: ALTEF3 Serial Number: 3569 Issue Time: 2025 Dec 02 0501 UTC CONTINUED ALERT: Electron 2MeV Integral Flux exceeded 1000pfu Continuation of Serial Number: 3568 Begin Time: 2025 Nov 25 1450 UTC Yesterday Maximum 2MeV Flux: 8521 pfu Potential Impacts: Satellite systems may experience significant charging resulting in increased risk to satellite systems.Thank you for using the Product Subscription Service. If you would like to remove a product subscription or updat ...Continue Reading

Space Weather Message Code: ALTEF3 Serial Number: 3568 Issue Time: 2025 Dec 01 0459 UTC CONTINUED ALERT: Electron 2MeV Integral Flux exceeded 1000pfu Continuation of Serial Number: 3567 Begin Time: 2025 Nov 25 1450 UTC Yesterday Maximum 2MeV Flux: 8310 pfu Potential Impacts: Satellite systems may experience significant charging resulting in increased risk to satellite systems.Thank you for using the Product Subscription Service. If you would like to remove a product subscription or updat ...Continue Reading