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1. [TowerTalk] HFTA data files (score: 1): Author: Vytenis Sciucka <vytenis.sciucka@gmail.com>; Date: Fri, 26 Jun 2009 12:52:04 +0300; Hello Guys, I have found nice program HFTA on the ARRL Antenna book and relative article bu G3TXQ in the latest QST, May. I got an idea to make some calculations and evaluations of my QTH and antenna; /archives//html/Towertalk/2009-06/msg00496.html (7,611 bytes)
2. Re: [TowerTalk] HFTA data files (score: 1): Author: Pete Smith <n4zr@contesting.com>; Date: Fri, 26 Jun 2009 06:19:24 -0400; Hi Vytenis. Several things: You need to use the arrival angle data at http://www.arrl.org/notes/9876/, which are updated using the latest version of VOACAP, which has some significant changes, partic; /archives//html/Towertalk/2009-06/msg00497.html (10,081 bytes)
3. Re: [TowerTalk] HFTA data files (score: 1): Author: Vytenis Sciucka <vytenis.sciucka@gmail.com>; Date: Fri, 26 Jun 2009 13:45:07 +0300; Pete, thank you so much. In this updated link I found location Vilnius -LY. That's what I've been trying to simulate. Vytenis _______________________________________________ _________________________; /archives//html/Towertalk/2009-06/msg00498.html (7,358 bytes)
4. Re: [TowerTalk] HFTA data files (score: 1): Author: Cqtestk4xs@aol.com; Date: Fri, 26 Jun 2009 11:03:11 EDT; I've played with the N6BV stuff in designing the station out here in KH6. My educated guesses follow. The further you are from the area the less critical the angles are. By that I mean if you are com; /archives//html/Towertalk/2009-06/msg00509.html (8,298 bytes)
5. Re: [TowerTalk] HFTA data files (score: 1): Author: "Jim Brown" <jim@audiosystemsgroup.com>; Date: Fri, 26 Jun 2009 09:56:14 -0700; Hello Vytenis, You have gotten excellent advice from others, especially Pete and Bill, but I will add this about the terrain data. I've used HFTA a lot, and so have many hams who live near me. We fin; /archives//html/Towertalk/2009-06/msg00510.html (8,617 bytes)
6. Re: [TowerTalk] HFTA data files (score: 1): Author: "Vytenis Sciucka" <vytenis.sciucka@gmail.com>; Date: Fri, 26 Jun 2009 20:16:58 +0300; Thank you Bill, Pete and Jim I think I will spend this evening to midnight playing with HFTA :-) One important thing is I got more or less trustworthy arrival angles from the link Pete provided me. L; /archives//html/Towertalk/2009-06/msg00512.html (10,663 bytes)
7. Re: [TowerTalk] HFTA data files (score: 1): Author: "Jim Brown" <jim@audiosystemsgroup.com>; Date: Fri, 26 Jun 2009 10:26:37 -0700; That certainly makes it easier. I just thought of another way to get this data. The program GOOGLE EARTH uses a world wide database of satellite photographic and terrain data. The accuracy and level; /archives//html/Towertalk/2009-06/msg00513.html (8,581 bytes)
8. Re: [TowerTalk] HFTA data files (score: 1): Author: Kevin Normoyle <knormoyle@surfnetusa.com>; Date: Fri, 26 Jun 2009 11:16:28 -0700; Jim K9YC mentioned google earth for getting terrain profiles. Here's a site that draws a terrain profile between two points. It uses a Google maps api. If I was a software guy, I'd know more about wh; /archives//html/Towertalk/2009-06/msg00514.html (8,700 bytes)
9. Re: [TowerTalk] HFTA data files (score: 1): Author: Jon Kåre Hellan <hellan@acm.org>; Date: Fri, 26 Jun 2009 20:13:31 +0200; The Shuttle Radar Topography Mission made a digital elevation model that covers most of the world between 60 N and 60 S. It can be found at http://srtm.csi.cgiar.org/SELECTION/inputCoord.asp. I don't; /archives//html/Towertalk/2009-06/msg00518.html (10,093 bytes)
10. Re: [TowerTalk] HFTA data files (score: 1): Author: Pete Smith <n4zr@contesting.com>; Date: Fri, 26 Jun 2009 16:57:46 -0400; There's some question in my mind about how well these data will work with HFTA. The horizontal resolution of the data appears to be 3 arc-seconds, which is 1/1200th of a degree of latitude and longit; /archives//html/Towertalk/2009-06/msg00519.html (11,863 bytes)
11. Re: [TowerTalk] HFTA data files (score: 1): Author: "Jim Brown" <jim@audiosystemsgroup.com>; Date: Fri, 26 Jun 2009 14:23:11 -0700; I'm not Dean, but given the fact that Vytenis says the land is pretty flat around him, it should be plenty good enough. If you had more rugged terrain it would be good to have more closely spaced dat; /archives//html/Towertalk/2009-06/msg00520.html (8,807 bytes)
12. Re: [TowerTalk] HFTA data files (score: 1): Author: David Gilbert <xdavid@cis-broadband.com>; Date: Fri, 26 Jun 2009 14:32:32 -0700; If there are significant changes in terrain within those increments of 295 feet it will have a significant effect on the results, at least as far as HFTA is concerned. I've proven that to myself seve; /archives//html/Towertalk/2009-06/msg00521.html (9,087 bytes)

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