American Radio Relay League | Ham Radio Association and Resources

• The ARRL Solar Update

  Solar activity was at low levels this past week with only C classflares. Region 4294 remains the largest region on the disk but isappearing to be simplifying magnetically. Region 4296, on the otherhand, gained a delta region in its intermediary region, though withno corresponding increase in flare activity as of yet. New fluxemerged along the eastern side of Region 4298, resulting in severalC f...

• Operators/Monitors Wanted for Meteor Scatter QSO Party December 12-13

• “Space Sailors” Seeking Download Help from Ham Radio Operators

  Update 12/4/2025 (See original story, below.)ChipSat Signals Received; Listeners Still NeededUpdating the story, ‘Space Sailors’ Seeking Download Help from Ham Radio Operators,” posted on December 2, 2025, Cornell University’s “ChipSat”-equipped light sail was successfully deployed on December 3 and several dozen telemetry signals from its ChipSat flight computers have been received and decoded...