ARRL

Register Account

Login Help

Search for Amateur Radio News

  • 04/17/2009 | The K7RA Solar Update

    Still no sunspots, and again we saw a prediction for slightly higher solar flux slip away. If you go here and click on any forecast prior to April 14, you will see solar flux numbers at 72 predicted for the end of this month. But in the few days since the
    Learn More

  • 03/27/2009 | The K7RA Solar Update

    Every day I check the 45 day forecast of planetary A index and solar flux from NOAA and the US Air Force. For quite some time now, the solar flux forecast has been the same: The projection shows 45 days of solar flux at 70, with no variation. I look at th
    Learn More

  • 03/20/2009 | The K7RA Solar Update

    This reporting week -- March 12-18 -- there were no sunspots, but we saw a couple of promising magnetic anomalies which faded away before ever emerging as sunspots. Sunspot numbers for March 12-18 were 0, 0, 0, 0, 0, 0 and 0 with a mean of 0. The 10.7 cm
    Learn More

  • 03/13/2009 | The K7RA Solar Update

    Last week's bulletin again mentioned briefly appearing sunspots and it happened again this week. For just two days, another Solar Cycle 23 spot appeared, number 1014. The latitude of the spot was consistent with an old and fading solar cycle. As this peri
    Learn More

  • 03/06/2009 | The K7RA Solar Update

    There have been no new sunspots since the recent brief three-day appearance of quickly fading sunspot 1013 on February 24-26. It was another Solar Cycle 24 sunspot, but this is not too encouraging, considering how brief and weak it appeared. There are no
    Learn More

  • 02/27/2009 | The K7RA Solar Update

    Excitement mounted a few days ago when new Solar Cycle 24 sunspot 1013 emerged, but two days later it was fading away, similar to other recent sunspot appearances. The sunspot number for February 24-26 was 12, 14 and 12. Today's number will likely be 0. S
    Learn More

  • 02/20/2009 | The K7RA Solar Update

    We saw a sunspot on February 11-13, then it was gone. Typical of sunspots recently, it was only seen briefly; this one was a relic of Solar Cycle 23, according to its magnetic signature. For at least a couple of years now, we've been expecting Solar Cycle
    Learn More

  • 02/13/2009 | The K7RA Solar Update

    Sunspots returned this week, or rather, one did, but it is an old Solar Cycle 23 spot. Sunspot 1012 has been visible the last couple of days, February 11-12. It is down near the Sun's equator, typical for spots from a previous cycle. It's nice to have a s
    Learn More

EXPLORE ARRL

Instragram     Facebook     Twitter     YouTube     LinkedIn