Well, yeah, that was new term for me as well. I did a web search and found an interesting article by Bob Brown NM7M PhD UC Berkeley ( http://www.astrosurf.com/luxorion/qsl-hf-tutorial-nm7m5.htm ) and I found a short explanation about halfway down the page. Maybe I can read the entire article.
Last winter, while still living in S.E. Michigan, I may have experienced this phenomenon when in just one evening session, I logged 7 NDBs from Nunavut (6 of which I had never heard before). Here's hoping this will shed some light on things. Vy 73 de Joe KJ8O On Sat, Nov 24, 2018 at 4:50 PM Volodya S <[email protected]> wrote: > A great article, Mark. Thanks for sharing with us. There was a new term > that I had never heard of before, and perhaps someone smarter than me can > explain it further: Gyrofrequency. The map didn't have much information > for North America compared to other places in the world, and was quite > high, into the X-band here. I'll have to re-read it to see whether I grasp > that concept. Ducting, which we were all familiar with in MW DXing is > prominent in the article I'm not quite finished all of it, yet....Walt > > On Sat, Nov 24, 2018 at 7:01 PM Mark Connelly via IRCA < > [email protected]> wrote: > > > > > > > > > ---------- Forwarded message ---------- > > From: Mark Connelly <[email protected]> > > To: [email protected], [email protected] > > Cc: > > Bcc: > > Date: Sat, 24 Nov 2018 19:00:57 +0000 (UTC) > > Subject: propagation article > > Maybe of some relevance to MW DX: > > <<Here is an interesting pdf document including information on the > effects > > of Earth's Electron Gyrofrequency on 160 meters. > > > > The 160-Meter Band: An Enigma Shrouded in Mystery > > http://solar.spacew.com/cq/cqmar98.pdf > > > > Jerry, K4SAV>> > > > > > > > > ---------- Forwarded message ---------- > > From: Mark Connelly via IRCA <[email protected]> > > To: [email protected], [email protected] > > Cc: Mark Connelly <[email protected]> > > Bcc: > > Date: Sat, 24 Nov 2018 19:00:57 +0000 (UTC) > > Subject: [IRCA] propagation article > > _______________________________________________ > > IRCA mailing list > > [email protected] > > http://montreal.kotalampi.com/mailman/listinfo/irca > > > > Opinions expressed in messages on this mailing list are those of the > > original contributors and do not necessarily reflect the opinion of the > > IRCA, its editors, publishing staff, or officers > > > > For more information: http://www.ircaonline.org > > > > To Post a message: [email protected] > > > > > _______________________________________________ > IRCA mailing list > [email protected] > http://montreal.kotalampi.com/mailman/listinfo/irca > > Opinions expressed in messages on this mailing list are those of the > original contributors and do not necessarily reflect the opinion of the > IRCA, its editors, publishing staff, or officers > > For more information: http://www.ircaonline.org > > To Post a message: [email protected] > > -- Joe Miller, KJ8O Desert Hot Springs, CA Locator DM13sw _______________________________________________ IRCA mailing list [email protected] http://montreal.kotalampi.com/mailman/listinfo/irca Opinions expressed in messages on this mailing list are those of the original contributors and do not necessarily reflect the opinion of the IRCA, its editors, publishing staff, or officers For more information: http://www.ircaonline.org To Post a message: [email protected]
