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11/20/2010 | Amateur Radio Quiz: Getting One’s BearingsBy H. Ward Silver, N0AX
n0ax@arrl.net Hams need to point their antennas accurately, but how can you do that if you don’t know the words used to describe direction? Ready, fire, aim! 1) For two different stations to have short-path bearings that are exac...
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11/25/2009 | The K7RA Solar Update
This edition of the Solar Update will be brief. Since ARRL Headquarters is closed on Thanksgiving Day and the day after, I hope to have another bulletin out Monday morning to catch up with the sunspot, solar flux and geomagnetic data information.
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08/07/2009 | The K7RA Solar Update
We had some nice sunspot activity from July 3-10 -- and we were hoping for a return 27-28 days later -- but it never happened. Varying by latitude, the Sun rotates relative to Earth about every 27.5 days. If that same region was still active or the activi
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