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.
  1. Strong (G3) Geomagnetic Storm Conditions Reported

    NOAA’s Space Weather Prediction Center (SWPC) said strong (G3) geomagnetic storm conditions occurred overnight. The SWPC issued a G3 alert at 0419 UTC on May 28, due to activity associated with a coronal mass ejection (CME) on May 23.

    “Although the solar wind speed is relatively slow, the embedded magnetic field had a prolonged period of southward Bz (a magnetic field component) that is causing ...

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  3. QB-50 Constellation Satellites Deployed from ISS

    More than 2 dozen QB50 constellation CubeSats have been deployed from the International Space Station (ISS), including three carrying Amateur Radio transponders. Built by student groups from 23 countries, the string-of-pearls QB50 constellation aims to study the lower thermosphere 200-380 kilometers above Earth. The satellites were launched to the ISS onboard an Atlas V rocket in March.

    In all 2...

  4. The K7RA Solar Update

    At 2344 UTC on May 23, the Australian Space Forecast Centre issued a geomagnetic disturbance warning for May 26-27. On May 26, they predict a minor to major storm warning and on May 27 a minor storm. These are due to a “partial halo coronal mass ejection.”

    Dr. Skov has a new space weather video:
    https://www.youtube.com/watch?v=mlTZTcplsQU


    Average daily sunspot number for the reporting week (May 1...

  5. WX4NHC Announces Communications Test in Advance of 2017 Hurricane Season

    Now in its 37th year, WX4NHC at the National Hurricane Center (NHC) in Miami, will take to the airwaves on Saturday, May 27, for the annual NHC Station Test. The event will begin at 1300 UTC and wrap up at 2100 UTC. The exercise, which involves several bands and modes, serves to test Amateur Radio Station equipment, antennas, and computer systems prior to this year’s Hurricane Season, which sta...

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