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1. Topband: 3B9C model (score: 1): Author: Nm7m@aol.com; Date: Mon, 29 Mar 2004 12:35:31 EST; The 3B9C DXpedition is currently in progress but already there is keen interest in the propagation of 3B9C's signals, particularly to North America. There, just to the East Coast, distances are in ex; /archives//html/Topband/2004-03/msg00320.html (9,065 bytes)
2. Topband: K0SR calculation (score: 1): Author: Nm7m@aol.com; Date: Tue, 30 Mar 2004 09:14:42 EST; In response to my recent posting on 3B9C propagation, K0SR in St. Paul, MN replied, outlining his experience: regularly hearing weak 3B9C signals around 0100 UTC but unable to make contact. In an eff; /archives//html/Topband/2004-03/msg00335.html (6,916 bytes)
3. Topband: On Long- and Short-Paths (score: 1): Author: Nm7m@aol.com; Date: Thu, 1 Apr 2004 03:03:18 EST; In ionospheric radio, propagation paths are based on the spherical trigonometry of great-circles. For programs like IONCAP and the like, such great-circles are defined geometrically as the intersecti; /archives//html/Topband/2004-04/msg00003.html (7,150 bytes)
4. Topband: "Bang" per kW (score: 1): Author: Nm7m@aol.com (by way of Bill Tippett <btippett@alum.mit.edu>); Date: Sat, 31 Dec 2005 08:33:58 -0500; In this age of globalization, DX contesting has become more competitive, no doubt about it. Contesting on 160 meters is inherently different as the geomagnetic field has a measure of control, by how; /archives//html/Topband/2005-12/msg00412.html (8,286 bytes)
5. Topband: Horizontal antennas (score: 1): Author: Nm7m@aol.com; Date: Mon, 9 Jan 2006 16:12:37 EST; More on "Bang" per kW Recently, I posted the results of some calculations showing how the earth's magnetic field affects DXing with vertical antennas. Sites were used, areas of strong DX activity, on; /archives//html/Topband/2006-01/msg00114.html (8,536 bytes)
6. Topband: DX Ratings (score: 1): Author: Nm7m@aol.com; Date: Mon, 23 Jan 2006 16:35:07 EST; Friends in Radioland - With signals from the Peter I DXpedtion about to show up on the band and solar minimum not far off, it is of interest to rate the challenges that will be presented to DX operat; /archives//html/Topband/2006-01/msg00338.html (8,082 bytes)
7. Topband: DX Ratings (score: 1): Author: Nm7m@aol.com; Date: Fri, 27 Jan 2006 11:42:07 EST; Friends in Radioland - In connection with my DX Ratings, I've had inquiries about where are the most remote and the least remote sites from centers of ham radio activity. So with atlas and computer i; /archives//html/Topband/2006-01/msg00387.html (7,630 bytes)
8. Topband: 160 m Propagation (score: 1): Author: Nm7m@aol.com; Date: Wed, 1 Feb 2006 13:54:38 EST; Friends in Radioland - Having seen a large number of postings on "strange conditions" on 160 meters, I think it's worthwhile to indicate what might be happening, especially since correlations with K; /archives//html/Topband/2006-02/msg00025.html (8,738 bytes)
9. Topband: (no subject) (score: 1): Author: Nm7m@aol.com; Date: Mon, 12 Jan 2009 14:08:10 EST; FOR THOSE INTERESTED IN LONG-HAUL DXING ON 160 VIA DUCTS, I'D SUGGEST READING THE ARTICLES THAT K9LA AND I PUBLISHED RECENTLY IN THE NOVEMBER, DECEMBER AND JANUARY ISSUES OF CQ AND THE LOW BAND MONIT; /archives//html/Topband/2009-01/msg00105.html (7,089 bytes)
10. Topband: (no subject) (score: 1): Author: Nm7m@aol.com; Date: Tue, 28 Apr 2009 18:09:48 EDT; Friends in Radiol Now there's talk of raising one's QRG on 160 to 1.9 mHz to have less signal absorption while in pursuit of DX. But even with global agreement, life would not be simple as the geomag; /archives//html/Topband/2009-04/msg00093.html (7,737 bytes)
11. Topband: (no subject) (score: 1): Author: Nm7m@aol.com; Date: Wed, 29 Apr 2009 01:01:43 EDT; Friends in Radioland, Earlier, i pointed out that galactic cosmic ray flux (GCR) is a good DX variable, with DX conditions improving when GCR decreases. Current GCR data is easily obtained from the M; /archives//html/Topband/2009-04/msg00094.html (6,969 bytes)
12. Topband: (no subject) (score: 1): Author: Nm7m@aol.com; Date: Wed, 29 Apr 2009 09:11:52 EDT; Friends in Radioland, Earlier, I cited the fact that 160 DXing generally improves when the flux of galactic cosmic rays (GCR) DECREASES. This is shown on reviewing distance L vs GCR records in 160 me; /archives//html/Topband/2009-04/msg00095.html (7,771 bytes)
13. Topband: (no subject) (score: 1): Author: Nm7m@aol.com; Date: Thu, 30 Apr 2009 07:11:20 EDT; Friends in Radioland In the empirical model, ducting comes first on a path and the F-component is at the end. So the Mississippi region favors signals from SP5EWY Sorry about the confusion, **Big sav; /archives//html/Topband/2009-04/msg00100.html (7,182 bytes)
14. Topband: (no subject) (score: 1): Author: Nm7m@aol.com; Date: Wed, 23 Sep 2009 06:54:29 EDT; FRIENDS IN RADIOLAND In case you missed the Nov 2008 issue of CQ Magazine,, K9LA and I have a new theory for 160 DXing. It involves a new DX variable, galactic cosmic ray GCR intensity,' In a nutshel; /archives//html/Topband/2009-09/msg00098.html (6,474 bytes)
15. Topband: Fwd: the Challengf\es if Topband (score: 1): Author: Nm7m@aol.com; Date: Sat, 26 Sep 2009 19:42:06 EDT; FOR THOSE NEW TO 160, CONSIDER THE FOLLOWING; ____________________________________ From: Nm7m To: lance@myedl.com Sent: 9/26/2009 3:50:25 A.M. Pacific Standard Time Subj: the Challengf\es if Topband; /archives//html/Topband/2009-09/msg00136.html (7,120 bytes)
16. Topband: QUESTION (score: 1): Author: Nm7m@aol.com; Date: Thu, 22 Oct 2009 07:55:35 EDT; FRIENDS IN RADIOLAND, ARE OUR FRIENDS "DOWN UNDER" STILL THERE? I'VE HEARD LITTLE ABOUT THEM RECENTLY, IF YOU'VE HEARD OR CONTACTED ONE, IN THE LAST YEAR,PLEASE SEND THE CALL AND DATE TO THIS ADDRESS; /archives//html/Topband/2009-10/msg00295.html (6,220 bytes)

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