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American Radio Relay League | Ham Radio Association and Resources
The American Radio Relay League (ARRL) is the national association for amateur radio, connecting hams around the U.S. with news, information and resources.
12/05/2025 09:44 PM
The ARRL Solar Update

Solar activity was at low levels this past week with only C class
flares. Region 4294 remains the largest region on the disk but is
appearing to be simplifying magnetically. Region 4296, on the other
hand, gained a delta region in its intermediary region, though with
no corresponding increase in flare activity as of yet. New flux
emerged along the eastern side of Region 4298, resulting in several
C f...


12/05/2025 05:40 PM
Operators/Monitors Wanted for Meteor Scatter QSO Party December 12-13

12/04/2025 04:26 PM
“Space Sailors” Seeking Download Help from Ham Radio Operators

Update 12/4/2025 (See original story, below.)

ChipSat Signals Received; Listeners Still Needed

Updating 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...


11/26/2025 10:01 PM
LIVE YouTube Telethon to Support ARRL Teachers Institute on Wireless Technology

Don’t miss it! The annual YouTube telethon to raise money for the ARRL Teachers Institute on Wireless Technology will be held on Saturday, November 29, 2025, beginning at 3 PM EST / 12 PM PST, on the Ham Radio Crash Course YouTube channel, hosted by Josh Nass, KI6NAZ.

Join Nass and several other amateur radio contributors for a fun and entertaining livestream. They’ll cover a variety of amateur ...



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