[SFDXA] Upcoming propagation webinar

[Ed Callaway]

All,

This note was in the latest ARRL Contest Update:
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      This upcoming March 5th webinar<https://attendee.gotowebinar.com/register/1210821051936697601> shows how the 2013 VK9CZ DXpedition to the Cocos (Keeling) Islands made 51 QSOs with U.S. Zone 5 (East Coast) on 80 meters. 21 of these QSOs - more than 40 percent - were with stations in Florida. This presentation discusses several possible propagation mechanisms for this gray line event, and concludes that propagation through the dark ionosphere, rather than along the gray line itself, was the responsible mechanism.
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I will be making this presentation, which is based on my operation from the Boca Raton club station (N4BRF) and will be an extension of the presentation I made at the SFDXA meeting in September 2013.  I encourage everyone interested in HF radio propagation to register for the webinar, which will be at 9 PM EST.  (The webinar will be archived for later viewing on the World Wide Radio Operators Foundation web site, http://wwrof.org/category/webinar-archive/ .)

73,

Ed Callaway, N4II.