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61. Topband: lower ionosphere? (score: 1): Author: Carl K9LA <k9la@gte.net>; Date: Sat, 10 Jan 2009 07:50:26 -0500; That is a myth in the making due to poorly written press releases. If you dig into the details, you'll find that the satellite was only measuring the equatorial ionosphere (the orbit inclination is 1; /archives//html/Topband/2009-01/msg00088.html (6,983 bytes)
62. Re: Topband: lower ionosphere? (score: 1): Author: Carl K9LA <k9la@gte.net>; Date: Sat, 10 Jan 2009 21:04:59 -0500; Yuri, Since that satellite only measured the equatorial ionosphere, the conclusions are only valid for the equatorial ionosphere. There's no magic involved. It's simply an understanding of the differ; /archives//html/Topband/2009-01/msg00092.html (8,111 bytes)
63. Topband: long term trends in the ionosphere (score: 1): Author: Carl K9LA <k9la@gte.net>; Date: Sun, 11 Jan 2009 18:25:37 -0500; Again, the issue is not if the ionosphere moves up and down over a solar cycle. It does, and that is understood and documented. The issue is whether the worldwide ionosphere has moved to a lower (or; /archives//html/Topband/2009-01/msg00096.html (8,365 bytes)
64. Topband: comparing solar minimum periods (score: 1): Author: Carl K9LA <k9la@gte.net>; Date: Sun, 26 Apr 2009 08:25:29 -0400; Hello to everyone, There's no doubt we're experiencing the deepest solar minimum period of our lifetimes. The previous five solar minimum periods roughly lasted only two years, and here we are now ha; /archives//html/Topband/2009-04/msg00079.html (7,716 bytes)
65. Topband: propagation differences (score: 1): Author: Carl K9LA <k9la@gte.net>; Date: Mon, 27 Apr 2009 21:33:47 -0400; Bob W7LR asked That's an interesting question, and it involves how refraction, absorption, and polarization change with frequency. Noise would also have to be considered. One way to gain some theoret; /archives//html/Topband/2009-04/msg00087.html (7,496 bytes)
66. Topband: lightning (score: 1): Author: Carl K9LA <k9la@gte.net>; Date: Fri, 08 May 2009 18:11:12 -0400; Bud W2RU asked: What is the usual tilt, if any, in T-storm noise across 160m? That depends on the time domain response of the lightning discharge. If we assume a typical pulse (rise time of around 10; /archives//html/Topband/2009-05/msg00041.html (7,028 bytes)
67. Topband: new Cycle 24 prediction (score: 1): Author: Carl K9LA <k9la@gte.net>; Date: Sat, 09 May 2009 07:28:38 -0400; Yesterday (May 8) the Space Weather Prediction Center released a new prediction for Solar Cycle 24. You can read about it at www.swpc.noaa.gov/SolarCycle/index.html . Up until now the Cycle 24 Predic; /archives//html/Topband/2009-05/msg00045.html (7,374 bytes)
68. Re: Topband: Claiming 160m DXCC - Sending QSLs (score: 1): Author: Carl K9LA <k9la@gte.net>; Date: Mon, 25 May 2009 09:36:35 -0400; Peter, Congratulations! 160m cards (along with deleted entities) may be checked at conventions when the appropriate ARRL personnel are in attendance. Friedrichshafen in June offers this service, as d; /archives//html/Topband/2009-05/msg00113.html (7,424 bytes)
69. Topband: measuring ground conductivity (score: 1): Author: Carl K9LA <k9la@gte.net>; Date: Tue, 04 Aug 2009 19:53:56 -0400; All, Since ground conductivity is an important parameter for our 160m efforts and it has been discussed previously on this reflector, I thought I'd mention that an interesting paper appeared in the r; /archives//html/Topband/2009-08/msg00007.html (8,307 bytes)
70. Topband: Is this solar min better or worse? (score: 1): Author: Carl K9LA <k9la@gte.net>; Date: Sat, 12 Sep 2009 11:00:45 -0400; Hello to all, In April I asked this reflector for opinions on whether this solar minimum (2006 onward) is better or worse on 160m compared to the last solar minimum (1995-1998). The result of your in; /archives//html/Topband/2009-09/msg00053.html (7,230 bytes)
71. Re: Topband: Sunspots increase gud/bad for 160m? (score: 1): Author: Carl K9LA <k9la@gte.net>; Date: Wed, 23 Dec 2009 09:23:19 -0500; Sam, Those of us who have been in Amateur Radio for many years (the polite way of saying many of us are old) have grown up under the axiom that 160m is only good at solar minimum. But over the years; /archives//html/Topband/2009-12/msg00258.html (8,956 bytes)
72. Re: Topband: 160 Meter Propagation (score: 1): Author: Carl K9LA <k9la@gte.net>; Date: Thu, 24 Dec 2009 05:27:06 -0500; Greg, You make an important point about K5PC's comments. When Bob NM7M and I co-authored the first article in the cosmic ray series (in the November 2008 issue of CQ - Bob subsequently wrote several; /archives//html/Topband/2009-12/msg00267.html (7,950 bytes)
73. Topband: update on Bob NM7M (score: 1): Author: Carl K9LA <k9la@gte.net>; Date: Sun, 02 May 2010 17:46:12 -0400; Topbanders, He turned 87 at the beginning of April, and is in an assisted living facility in Anacortes, WA. He just had his left leg amputated above the knee due to diabetes (let that be a warning to; /archives//html/Topband/2010-05/msg00002.html (7,197 bytes)
74. Topband: Bob NM7M SK (score: 1): Author: Carl K9LA <k9la@gte.net>; Date: Sun, 23 May 2010 14:17:22 -0400; Topbanders, Bob contributed a lot to this reflector with respect to the mysteries of 160m propagation. Vicky and I always enjoyed our visits with him when we attended the Northwest DX Conventions. Ca; /archives//html/Topband/2010-05/msg00044.html (6,512 bytes)

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