Space Weather Message Code: ALTEF3 Serial Number: 3555 Issue Time: 2025 Nov 04 0551 UTC CONTINUED ALERT: Electron 2MeV Integral Flux exceeded 1000pfu Continuation of Serial Number: 3554 Begin Time: 2025 Oct 31 1250 UTC Yesterday Maximum 2MeV Flux: 6364 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: ALTXMF Serial Number: 492 Issue Time: 2025 Nov 03 1014 UTC ALERT: X-Ray Flux exceeded M5 Threshold Reached: 2025 Nov 03 1013 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: 3554 Issue Time: 2025 Nov 03 0459 UTC CONTINUED ALERT: Electron 2MeV Integral Flux exceeded 1000pfu Continuation of Serial Number: 3553 Begin Time: 2025 Oct 31 1250 UTC Yesterday Maximum 2MeV Flux: 12611 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 upda ...Continue Reading

Space Weather Message Code: ALTEF3 Serial Number: 3553 Issue Time: 2025 Nov 02 0459 UTC CONTINUED ALERT: Electron 2MeV Integral Flux exceeded 1000pfu Continuation of Serial Number: 3552 Begin Time: 2025 Oct 31 1250 UTC Yesterday Maximum 2MeV Flux: 10574 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 upda ...Continue Reading

November 2, 2025 In this edition: * AMSAT Receives Two ARDC Grants for Youth Initiative Program * Alan Johnston, KU2Y, Presents CubeSat Simulator 2025 Updates * ARISS 2025 Highlights Presented by Frank Bauer, KA3HDO * GridMasterMap Satellite Top 100 Rovers November Rankings 2025 * VUCC Satellite Standing November 2025 * DXCC Satellite Standing for November 2025 * Changes to AMSAT-NA TLE Distribution * ARISS News * AMSAT Ambassador Activities * Satellite Shorts From All Over The AMSAT(R) News Service bulletins ...Continue Reading

Space Weather Message Code: ALTEF3 Serial Number: 3552 Issue Time: 2025 Nov 01 0500 UTC CONTINUED ALERT: Electron 2MeV Integral Flux exceeded 1000pfu Continuation of Serial Number: 3551 Begin Time: 2025 Oct 31 1250 UTC Yesterday Maximum 2MeV Flux: 4767 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: 3551 Issue Time: 2025 Oct 31 1309 UTC ALERT: Electron 2MeV Integral Flux exceeded 1000pfu Threshold Reached: 2025 Oct 31 1250 UTC Station: GOES19 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

ANS-299 October 26, 2025 In this edition: * AMSAT President Outlines Future Directions * Symposium Videos Available on YouTube * Is AO-7 Still the Oldest Satellite? * Amateur Radio Receiver Reveals Global Satellite Privacy Issue * Changes to AMSAT-NA TLE Distribution * Russian Cosmonauts Conduct Spacewalk Outside ISS * ARISS News * AMSAT Ambassador Activities * Satellite Shorts From All Over The AMSAT® News Service bulletins are a free, weekly news and information service of AMSAT, The Radio Amateur Satellite ...Continue Reading

ANS-299 October 26, 2025 In this edition: * AMSAT President Outlines Future Directions * Symposium Videos Available on YouTube * Is AO-7 Still the Oldest Satellite? * Amateur Radio Receiver Reveals Global Satellite Privacy Issue * Changes to AMSAT-NA TLE Distribution * Russian Cosmonauts Conduct Spacewalk Outside ISS * ARISS News * AMSAT Ambassador Activities * Satellite Shorts From All Over The AMSAT® News Service bulletins are a free, weekly news and information service of AMSAT, The Radio Amateur Satellite ...Continue Reading

The following satellites have been removed from this week's AMSAT TLE distribution: NOAA-15 NORAD Cat ID 25338 Spacecraft decommissioned 19 August 2025 NOAA-19 NORAD Cat ID 33591 Spacecraft decommissioned 13 August 2025 UPMSat 2 NORAD Cat ID 46276 Decayed from orbit on or about 11 October 2025 LEDSAT NORAD Cat ID 49069 Decayed from orbit on or about 15 October 2025 CAS-4A NORAD Cat ID 42761 Decayed from orbit on or about 9 October 2025 CAS-4B NORAD Cat ID 42759 Decayted from orbit on or about 14 October 202 ...Continue Reading