The K7RA Solar Update
The American Radio Relay League (ARRL) is the national association for amateur radio, connecting hams around the U.S. with news, information and resources.
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The American Radio Relay League (ARRL) is the national association for amateur radio, connecting hams around the U.S. with news, information 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.
Finnish Amateur Radio League (SRAL) Marks Centennial This Year 01/27/2021 2021 is the centennial of the Finnish Amateur Radio League (SRAL). The special anniversary call sign OH100SRAL is being used throughout the year. Working at least 100 OH stations during 2021 qualifies the operator for an award. The SRAL’s OH0W call sign will be on the air from the Aland Islands, January 29 – February 3 for the CQ World Wide 160-Meter Contest (CW) and a few days afterward. Operators will include Niko Halminen, OH2GEK; Martti Laine, OH2BH, and Pertti Simovaara, OH2PM. Photo Gallery
The K7RA Solar Update 12/18/2020 Tad Cook, K7RA, Seattle, reports: Solar activity has declined, with the weekly average daily sunspot number slipping from 57.6 last reporting week to 17.4 over the past week. Solar flux averages also slipped over the past 2 weeks from 108.1 to 91.9 and to 82.1 over the most recent week. The latest solar flux prediction also appears soft. Solar flux is expected to peak at 86 on December 26-28, hit a low at 82 on January 1-10, and then peak again at 86 on January 21-24. Predicted values over the next 45 days are 82 on December 18 – 24; 83 on December 25; ...
The K7RA Solar Update 12/11/2020 Tad Cook, K7RA, Seattle, reports: Solar activity quieted this week, with the average daily sunspot number declining from 57.6 to 28.9, and the average daily solar flux softening from 108.1 to 91.9. On December 8 – 10, the sunspot number was 11 on each day, which is the minimum non-zero sunspot number. Sunspot group 2786 provided some great activity, but it is about to rotate off the sun’s visible surface. But a look at STEREO satellite images on Thursday night (December 10) shows some magnetic complexity about to became geo-effective from the sun’s...