ARRL

• 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...

• New ARRL Santa Clara Valley Section Manager

  ARRL The National Association for Amateur Radio® announced the appointment of Tony Dowler, K6BV, of Pacifica, California, as the ARRL Santa Clara Valley (SCV) Section Manager as of July 1, 2026. Dowler succeeds James Armstrong, NV6W, of San Jose, who concluded his third term as Section Manager on June 30 after serving since 2020. 

  Dowler has been the SCV Affiliated Club Coordinator. He has been...

• The ARRL Solar Update

  Solar activity reached moderate levels with an M1.5/1N flare on July 8 from Region 4482.

  There are currently five numbered regions on the visible disk. Region 4482 demonstrated continued growth and developed a delta spot within its trailing spot group. Region 4485 displayed new flux emergence. Regions 4486 and 4487 were newly numbered during the period. Region 4481 was stable and remained an unr...