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  • Sunspot041510

    04/16/2010 | The K7RA Solar Update

    Weakened sunspots faded this week, and we were buffeted with more geomagnetic instability, but without the dramatic geomagnetic storms of the previous week. The average daily sunspot numbers fell more than 20 points to 12.1, and the average solar flux dro
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  • QST1209Cover

    Feature

    01/04/2010 | Robert H. Welsh, N3RW, Wins December QST Cover Plaque Award

    The winner of the QST Cover Plaque Award for December is Robert H. Welsh, N3RW, for his article "How the Ionosphere Was Discovered." Congratulations, Robert! The winner of the QST Cover Plaque award -- given to the aut
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  • KB0H

    Feature

    12/21/2009 | The Amateur Amateur: Any-Bounce

    "Other than the ionosphere, have you ever deliberately bounced your signal off of something in order to improve your propagation?" That was the question asked during one of our recent ARES nets.
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  • 12/01/2009 | From One End of HF to the Other: The ARRL 160 Meter and 10 Meter Contests

    Both MF and HF offer a lot of breathing room for all interests in Amateur Radio. As the 2009-2010 Contest Season continues, two single-band events in December will highlight the magic of the opposite ends of the shortwave spectrum: the ARRL 160 Meter Cont
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  • 11/20/2009 | The K7RA Solar Update

    Sunspot 1029 made its trip around the Sun and has re-emerged as sunspot 1032. A new sunspot 1033 has come over the Sun's eastern limb. This steady appearance of sunspots has raised the MUF over many paths, and 15 meters is beginning to open regularly.
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  • 05/22/2009 | The K7RA Solar Update

    Do sunspots matter? Many of us are surprised at how good conditions can be with zero sunspots; the weak solar wind and lack of flares and geomagnetic events likely have something to do with it. Many times during the more active solar periods, sunspots wer
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  • 05/08/2009 | The K7RA Solar Update

    A Solar Cycle 23 spot appeared for two days -- April 29-30 -- in an area that soon rotated out of view. Sunspot numbers were 15 and 12, but for the last seven days, we haven't seen any spots. This may end soon -- we get the advance word because of the STE
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  • AA3

    Feature

    04/27/2009 | The Amateur Amateur: Packet, Part II

    I ended my last column by saying that I had purchased an Alinco DR-135 transceiver with a built-in TNC (Terminal Node Control, in this case a Tasco Radio Modem) and that all of my difficulties with packet radio had disappeared. Oh boy. Was that ever an op
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