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41. Topband: PCA Events (score: 1): Author: Robert Brown <bobnm7m@cnw.com> (Robert Brown); Date: Wed, 21 Nov 2001 11:38:23 -0800 (PST); Friends in Radio Land - In recent postings, Tom, KN4LF, spoke of "proton absorption" and how it would affect 160 meter propagation adversely. In his last posting, he called attention to a proton even; /archives//html/Topband/2001-11/msg00088.html (8,079 bytes)
42. Topband: Take a look! (score: 1): Author: bobnm7m@cnw.com (Robert Brown); Date: Mon, 26 Nov 2001 00:31:15 +0000; Friends in Radio Land - Those of you who enjoy seeing natural beauty, let me suggest you take a look at the auroral photograph on p. 128 of the January 2002 issue of Sky and Telescope. The photograph; /archives//html/Topband/2001-11/msg00096.html (6,716 bytes)
43. Topband: Meanook again (score: 1): Author: bobnm7m@cnw.com (Robert Brown); Date: Mon, 1 Oct 2001 10:28:29 -0700 (PDT); Friends in Radio Land - Meanook data for K-values in the last half of September is in and, as you would expect, it is far from quiet, only two days (20th and 24th) with K-sums in single digits. About; /archives//html/Topband/2001-10/msg00005.html (6,734 bytes)
44. Topband: Gottingen speaks (score: 1): Author: bobnm7m@cnw.com (Robert Brown); Date: Mon, 8 Oct 2001 03:44:20 -0700 (PDT); Friends in Radio Land - Using Kp magnetic data with a more global reach, the quiet days in September, with Kp-sums less than 10, were: Sept. 10, 7, 9, 21 and 1, respectively. while the most disturbed; /archives//html/Topband/2001-10/msg00047.html (6,493 bytes)
45. Topband: Ugh!! (score: 1): Author: Robert Brown <bobnm7m@cnw.com> (Robert Brown); Date: Tue, 16 Oct 2001 09:48:52 -0700 (PDT); Friends in Radio Land - The Meanook K-sums were absolutely WRETCHED in the first half of October - one day with a single digit (4) on the 7th and two with low double digits (12) on the 5th and 6th. A; /archives//html/Topband/2001-10/msg00113.html (6,662 bytes)
46. Topband: Meanook rises again (score: 1): Author: bobnm7m@cnw.com (Robert Brown); Date: Tue, 4 Sep 2001 10:43:21 -0700 (PDT); Friends in Radio Land, September is upon us again and another 160 meter DX season is about to begin. Let me give you the bad news first - magnetic storminess peaks at the equinoxes, as shown in the h; /archives//html/Topband/2001-09/msg00014.html (9,948 bytes)
47. Topband: K3J Operation (score: 1): Author: bobnm7m@cnw.com (Robert Brown); Date: Tue, 11 Sep 2001 05:43:02 -0700 (PDT); Friends in Radio Land - The K3J DXpedition to Johnston KIsland begins today. Like the recent K5K DXpedition to Kingman Reef, it is out in the Pacific Ocean area and looks toward Europe across the aur; /archives//html/Topband/2001-09/msg00020.html (7,243 bytes)
48. Topband: Enhanced electron recombination (score: 1): Author: bobnm7m@cnw.com (Robert Brown); Date: Fri, 14 Sep 2001 09:11:20 -0700 (PDT); Friends in Radio Land - Before the DXpedition to Mongolia was cancelled, I received inquiries concerning the two ion chemistry reactions that I cited, giving enhanced electron recombination due to io; /archives//html/Topband/2001-09/msg00037.html (9,214 bytes)
49. Topband: Enhanced electron recombination (score: 1): Author: Robert Brown <bobnm7m@cnw.com> (Robert Brown); Date: Fri, 14 Sep 2001 16:28:40 -0700 (PDT); Tom Good to hear from you again. As for your comments, one or two corrections. First, I was talking about paths going across the geographic polar cap as the longitudes (East Coast and Mongolia) diffe; /archives//html/Topband/2001-09/msg00041.html (9,671 bytes)
50. Topband: Skewed paths (score: 1): Author: bobnm7m@cnw.com (Robert Brown); Date: Sat, 15 Sep 2001 04:58:23 -0700 (PDT); Friends in Radio Land While it was not my intention, my remarks about a polar path in a time of weak auroral activity seems to have triggered a discussion about skewed paths. Let me be clear on this:; /archives//html/Topband/2001-09/msg00049.html (9,030 bytes)
51. Topband: More Skew (score: 1): Author: bobnm7m@cnw.com (Robert Brown); Date: Sat, 15 Sep 2001 08:15:07 -0700 (PDT); Friends in Radio Land - Given my previous remarks about the causes of skewed paths, I just made a quick check of the HAARP magnetometer record for today and find what appears to be the signature of t; /archives//html/Topband/2001-09/msg00052.html (8,051 bytes)
52. Topband: Last Shot (score: 1): Author: bobnm7m@cnw.com (Robert Brown); Date: Sun, 16 Sep 2001 03:38:09 -0700 (PDT); Friends in Radio Land - 160 Meter Propagation: Unpredictable Aspects in the Sept/Oct 2001 issue of QEX. It will give you some "food for thought". 73, Bob, NM7M; /archives//html/Topband/2001-09/msg00066.html (6,409 bytes)
53. Topband: Meanook - Sept 1 to 15 (score: 1): Author: bobnm7m@cnw.com (Robert Brown); Date: Mon, 17 Sep 2001 11:12:04 -0700 (PDT); Friends in Radio Land - In the first half of Septembner, Meanook K-sums were in single digits on Sept 2, 7, 9, 10 and 11. Add 27 days for another solar rotation and hope the density and speed of the; /archives//html/Topband/2001-09/msg00085.html (6,460 bytes)
54. Topband: RE: skewed paths (score: 1): Author: bobnm7m@cnw.com (Robert Brown); Date: Mon, 17 Sep 2001 11:52:34 -0700 (PDT); Friends in Radio Land - I agree with Bill Tippett that auroral reflections play an important role in 160 meter propagation, his QSO with SM6CPY being a prime example. But I disagree with him about th; /archives//html/Topband/2001-09/msg00087.html (8,773 bytes)
55. Topband: Conditions this morning (score: 1): Author: bobnm7m@cnw.com (Robert Brown); Date: Wed, 26 Sep 2001 14:34:55 -0700 (PDT); Hi again Tom, Thanks for the reply, saying that your skewed paths were before 1200 UTC. As I indicated, magnetic/auroral activity ended at about 1200 UTC and your contacts were well before that, VK3I; /archives//html/Topband/2001-09/msg00144.html (7,229 bytes)
56. Topband: Re: 160 path (score: 1): Author: bobnm7m@cnw.com (Robert Brown); Date: Wed, 26 Sep 2001 17:00:55 -0700 (PDT); Ron, No, your contribution is not "useless information", by any means. We learn by compiling information and your observations are quite significant. I have checked with my mapping utilities and see; /archives//html/Topband/2001-09/msg00146.html (7,339 bytes)
57. Topband: Sun rise/set charts (score: 1): Author: bobnm7m@cnw.com (Robert Brown); Date: Tue, 10 Jul 2001 16:12:13 -0700 (PDT); Friends in Radioland - Even better than sunrise/sunset tables is the new version (5.0) of DXAID which will be ready for release in August. Of interest to low-band DXers is LoProp, an improvement of t; /archives//html/Topband/2001-07/msg00018.html (7,887 bytes)
58. Topband: Attn: 160 Meter Operators in Brazil (score: 1): Author: bobnm7m@cnw.com (Robert Brown); Date: Fri, 8 Jun 2001 08:56:52 -0700 (PDT); Dear Friends, I am currently studying a long-path contact between Mike, VK6HD, and Jack, VE1ZZ. The path goes over the Antarctic Continent and then Brazil. The date and time are April 26, 1999 and 22; /archives//html/Topband/2001-06/msg00013.html (6,969 bytes)
59. Topband: Long-path Revisited (score: 1): Author: bobnm7m@cnw.com (Robert Brown); Date: Mon, 16 Apr 2001 05:05:07 -0700 (PDT); Friends in Radio Land Earlier, I announced the publication of "Long-Path Propagation: Revisited in Year 2000". That was an upgrade of my earlier publication written almost ten year ago. I offered the; /archives//html/Topband/2001-04/msg00033.html (7,348 bytes)
60. Topband: 160 Meter Propagation (score: 1): Author: bobnm7m@cnw.com (Robert Brown); Date: Sat, 6 Jan 2001 05:45:13 -0800 (PST); G'morning all, In connection with the remarks about propagation conditions at low latitudes like A9 nd 9V, let me point out that GEOMAGNETIC COORDINATES instead of geographic coordinates are the impo; /archives//html/Topband/2001-01/msg00051.html (8,444 bytes)

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