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61. Topband: 160 Meter Propagation (score: 1): Author: bobnm7m@cnw.com (Robert Brown); Date: Sat, 6 Jan 2001 08:58:24 -0800 (PST); Larry, Thanks for the note. But your question does not deal with what I was talking about; you are asking about contacts between stations well above the low-latitude range. And looking at the possibl; /archives//html/Topband/2001-01/msg00056.html (10,047 bytes)
62. Topband: 160 Meter Propagation (score: 1): Author: bobnm7m@cnw.com (Robert Brown); Date: Sun, 7 Jan 2001 14:42:24 -0800 (PST); Bob, As for the auroral zones in DXAID, they represent mathematical fits of auroral data from NOAA, not "models" in any physical or mathematical sense. But the question of the "real thing" goes back; /archives//html/Topband/2001-01/msg00082.html (9,957 bytes)
63. Topband: Complaints (score: 1): Author: bobnm7m@cnw.com (Robert Brown); Date: Mon, 4 Dec 2000 07:16:28 -0800 (PST); Friends in Radio Land I have been reading the mail, all the complaints about poor propagation during the recent contest. For what they're worth, I just wanted to put in a few words for you to think a; /archives//html/Topband/2000-12/msg00035.html (8,611 bytes)
64. Topband: Meanook again, (score: 1): Author: bobnm7m@cnw.com (Robert Brown); Date: Thu, 2 Nov 2000 04:00:38 -0800 (PST); Friends in Radio Land The Meanook K-data is in and shows two quiet days, Oct 20 and 21, with K-sums of 2 and 4. The 27th was pretty quiet too with a K-sum of 7. Add 27-28 days and see what you get. G; /archives//html/Topband/2000-11/msg00005.html (6,668 bytes)
65. Topband: Long Path (score: 1): Author: bobnm7m@cnw.com (Robert Brown); Date: Tue, 14 Nov 2000 06:52:40 -0800 (PST); Robin, I was interested to see your remarks. As you know, I have offered one interpretation to your observations during the XZ0A DXpedition. You will find it in the current (November/December) issue; /archives//html/Topband/2000-11/msg00074.html (7,805 bytes)
66. Topband: 160 Meter Propagation (score: 1): Author: bobnm7m@cnw.com (Robert Brown); Date: Tue, 14 Nov 2000 10:37:01 -0800 (PST); Tom, You say that "signals will ALWAYS seek the path of least resistance and absorption." I hate to say it but I do not recognize that as a principle that follows from Maxwell's Equations, as applied; /archives//html/Topband/2000-11/msg00077.html (8,065 bytes)
67. Topband: Bad times! (score: 1): Author: bobnm7m@cnw.com (Robert Brown); Date: Thu, 16 Nov 2000 09:15:16 -0800 (PST); Friends in Radio Land - The first two weeks of October were not shining examples of low magnetic activity. True, there were two days, the 2nd and 3rd, when the K-sums were low, 4 and 3, respectively.; /archives//html/Topband/2000-11/msg00083.html (6,888 bytes)
68. Topband: Re: SSW propagation on 160m (score: 1): Author: bobnm7m@cnw.com (Robert Brown); Date: Fri, 17 Nov 2000 06:03:00 -0800 (PST); Eric, Many thanks for your note and thoughts about the SSW problem. I think you will see that my approach has been to stay close to the more conventional aspects of propagation, particularly the part; /archives//html/Topband/2000-11/msg00088.html (10,362 bytes)
69. Topband: K5K logs (score: 1): Author: bobnm7m@cnw.com (Robert Brown); Date: Wed, 22 Nov 2000 06:39:08 -0800 (PST); A Review of the K5K Logs The recent K5K DXpedition to Kingman Reef provides additonal insights to propagation on 160 meters. The present brief note is a summary of those features. For the period Octo; /archives//html/Topband/2000-11/msg00131.html (8,584 bytes)
70. Topband: Meanook again (score: 1): Author: bobnm7m@cnw.com (Robert Brown); Date: Mon, 2 Oct 2000 07:02:14 -0700 (PDT); Friends in Radio Land As I have said many times, magnetic activity peaks around the equinoxes and this time was no exception. So the low K-sums at Meanook were 10 and 11 on the 23rd and 24th of Septe; /archives//html/Topband/2000-10/msg00007.html (6,809 bytes)
71. Topband: Meanook again, (score: 1): Author: bobnm7m@cnw.com (Robert Brown); Date: Mon, 16 Oct 2000 06:41:22 -0700 (PDT); Friends in Radio Land - The Meanook K data is in and there were three days with low K-sums, the 6th, 8th and 9th. Add 27-28 days and hope. There were quite a few K-values of 6 and higher, on Oct 3,4,; /archives//html/Topband/2000-10/msg00097.html (6,688 bytes)
72. Topband: Meanook again, (score: 1): Author: bobnm7m@cnw.com (Robert Brown); Date: Fri, 1 Sep 2000 10:13:25 -0700 (PDT); Friends in Radio Land, With various postings suggesting that the winter season on 160 is starting again, perhaps a bit early, it seemed appropriate to look at the latest K-sums from Meanook. So brief; /archives//html/Topband/2000-09/msg00005.html (6,777 bytes)
73. Topband: Meanook again (score: 1): Author: bobnm7m@cnw.com (Robert Brown); Date: Mon, 18 Sep 2000 08:15:30 -0700 (PDT); Friends in Radio Land The Meanoon K-data is in hand again and the K-sums were the lowest, 8 and 6, on September 10 and 11. Hope for more magnetic quiet in 27-28 days after those dates. Otherwise the; /archives//html/Topband/2000-09/msg00087.html (6,633 bytes)
74. Topband: aurora (score: 1): Author: bobnm7m@cnw.com (Robert Brown); Date: Mon, 7 Aug 2000 07:12:14 -0700 (PDT); Bob, Sad to say, a small shift in QRG within the band will not help get you through. The absorption depends on the QRG and the electron-neutral collision frequency in the absorbing region and that sp; /archives//html/Topband/2000-08/msg00013.html (7,578 bytes)
75. Topband: So far, so good? (score: 1): Author: bobnm7m@cnw.com (Robert Brown); Date: Sun, 16 Jul 2000 08:28:25 -0700 (PDT); Friends in Radio Land, The red glow reported by KN4LF is a high-altitude, type A aurora and has its origin in an excited state of atomic oxygen that has a 110 second lifetime. With collisions infrequ; /archives//html/Topband/2000-07/msg00030.html (8,873 bytes)
76. Topband: Meanook again (score: 1): Author: bobnm7m@cnw.com (Robert Brown); Date: Tue, 1 Feb 2000 06:32:29 -0800 (PST); Friends in Radio Land - The Meanook K-indices are in for January 16 - 31. K-sums were low (5, 3, 3, 3) for January 16 -19 and the K-sum was 0 for January 21. Otherwise, the K-sums were up the rest of; /archives//html/Topband/2000-02/msg00007.html (6,763 bytes)
77. Topband: Meanook again (score: 1): Author: bobnm7m@cnw.com (Robert Brown); Date: Wed, 5 Jan 2000 06:13:49 -0800 (PST); Friends in Radio Land The Meanook K-data is in for the last half of December. The K-sums for the week December 16-23 were quite low, between 0 and 6. No K-value above 2. The last two weeks of Decembe; /archives//html/Topband/2000-01/msg00018.html (6,967 bytes)
78. Topband: Some comments (score: 1): Author: bobnm7m@cnw.com (Robert Brown); Date: Fri, 7 Jan 2000 09:22:49 -0800 (PST); Friends in Radio Land I do believe that geometers have shown centuries ago that the shortest distance between two points on a sphere is the greatcircle distance between those points obtained by the i; /archives//html/Topband/2000-01/msg00042.html (9,597 bytes)
79. Topband: Meanook again (score: 1): Author: bobnm7m@cnw.com (Robert Brown); Date: Mon, 17 Jan 2000 05:52:55 -0800 (PST); Friends in Radio Land The Meanook K-indices are in for the first two weeks in January. The first week was pretty disturbed but the second week was somewhat better. Only two day stand out for low K-su; /archives//html/Topband/2000-01/msg00115.html (6,771 bytes)
80. Topband: Not a peep! (score: 1): Author: bobnm7m@cnw.com (Robert Brown); Date: Wed, 19 Jan 2000 07:57:37 -0800 (PST); Friends in Radio Land - In contrast to the last two days, XZ0A was not heard here, at least between 1500 and 1600 UTC. Tomorrow is another day, 73, Bob, NM7M Guemes Island, WA 48.5N,. 122.6W -- FAQ o; /archives//html/Topband/2000-01/msg00134.html (6,520 bytes)

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