ARRL

• The ARRL Solar Update

  Solar activity has been at low levels, with occasional B-class flaring and isolated low-level C-class flares observed. The largest event of the period was a C1.6/Sf flare on August 5 from Region 4502.
   
  The six numbered sunspot regions on the visible disk are mostly stable or in varying stages of decay. Region 4498 showed a slight decrease in penumbral extent. Region 4499 declined in length and...

• The ARRL Solar Update

  Solar activity has remained at low levels. Region 4494 exhibited decay in its trailing spots as its flare activity subsided. Region 4498 rotated into better viewing positioning, revealing mixed polarity just behind its large leading spot, and was responsible for a handful of low-level C-class flares.
  
  Region 4499 underwent evolution, gaining additional spots and producing a low-level C-class flar...

• The ARRL Solar Update

  Solar activity continued at moderate levels as Region 4493 produced an M3.6 flare on July 22, which was the largest event of the period and was associated with a 10.7-centimeter radio burst of 200 solar flux units (sfu). Additionally, 4493 produced a C3.4 flare on July 22, which was associated with another 10.7-cm radio burst of 150 sfu.
   
  Region 4493 continued to undergo consolidation in its le...

• DXer and DXpeditioner Kan Mizoguchi, JA1BK, Silent Key

  Kiyoshi “Kan” Mizoguchi, JA1BK, a well-known DXer, DXpeditioner, CQ DX Hall of Fame member, and former Director of International Amateur Radio Union (IARU) Region 3 passed away in May 2026 at the age of 93. He was a member of the ARRL Maxim Society at the Fellow Class.

  First licensed in 1952, Mizoguchi became involved in the creation of IARU Region 3, which covers most of Asia and the Pacific, a...

• The ARRL Solar Update

  Solar activity has remained at low levels, with an occasional
  low-level C-class flaring observed, including a C3.3/Sf flare on July
  15 from Region 4489. The largest event of the period, a long-duration
  C8.9 flare that peaked on July 15, originated from a returning region
  on the eastern limb. This region is not yet numbered and will be
  assessed once it has become visible from Earth’s perspective, but...