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Solar activity reached high levels this past week when Region 4299
produced an M1.1 (R1/Minor) flare on December 6. Shortly after, the
region produced an M8.1/2b (R3/Strong) flare, also on December 6.
Associated with the M8.1 flare was a 1,100 SFU Tenflare, a 1,143
km/s Type II sweep and a Type IV sweep. (A "sweep" is a solar radio
burst that sweeps through the RF spectrum as the energy moves
outward...

The Federal Communications Commission (FCC) on December 9, 2025, released a long-awaited Report and Order adopting a new amateur radio spectrum allocation in the 60-meter band that was approved for world-wide use on a secondary basis in the WRC-15 (World Radiocommunication Conference 2015) Final Acts. The Commission also agreed with a petition from ARRL The National Association for Amateur Radi...

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...

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...

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 ...