ARRL

• The ARRL Solar Update

  Solar activity remained at low levels this past week with numerous C1
  flares from Region 4420, which exhibited growth during the period.
  Region 4419 showed minor decay, particularly in its trailing spots,
  while producing a lone C1.0 flare. Region 4422 was numbered during
  the period but remained inactive. No Earth-directed CMEs were
  observed in coronagraph imagery.
  
  Solar activity is expected to contin...

• Dayton Hamvention® 2026 Offers Forums for Every Ham

  Dayton Hamvention 2026 features a wide range of forums to appeal to amateur radio operators of all interests, experience levels, and ages. The Hamvention Forums Committee has assembled a diverse lineup covering technical topics, operating skills, and emerging interest areas. 

  On opening day, Friday, May 15, there are 22 forums beginning at 9:15 AM with HamSCI: The Ham Radio Science Citizen Inves...

• Helping NASA Track Artemis II’s Orion Spacecraft

  The University of Pittsburgh’s Panther Amateur Radio Club (PARC) had a unique opportunity last week...helping NASA track Artemis II’s Orion spacecraft on its mission to the moon and back!

  Faculty advisor Juan Manfredi, NAØB, said the club responded to a request from NASA to submit a proposal. “We submitted our proposal in September 2025 and were notified in November that our proposal was accepte...

• The ARRL Solar Update

  Solar activity was at very low levels with only isolated B-class
  flaring, mostly from Region 4416.
   
  There are currently four numbered regions on the visible disk. Region
  4416 remains the largest group by area but exhibited signs of
  structural weakening, including flux submergence and a slight decay
  of its intermediary pores. Region 4419 was the most complex group on
  the disk and showed flux emergen...

• The ARRL Solar Update

  Solar activity remained at low levels this week. Most of the C-class activity came from either Region 4414 or Region 4409, which has developed a delta spot in its intermediary area. All remaining spots were either stable or in slight decay, with Region 4406 rotating over the west limb by the end of the reporting period.
   
  Coronal activity was observed in CCOR-1, LASCO and STEREO available imager...