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References: [ +subject:/^(?:^\s*(re|sv|fwd|fw)[\[\]\d]*[:>-]+\s*)*\[TowerTalk\]\s+HFTA\s+question\s*$/: 15 ]

Total 15 documents matching your query.

1. [TowerTalk] HFTA question (score: 1)
Author: "David J. Sourdis - HK1A" <hk1kxa@hotmail.com>
Date: Wed, 20 Jan 2010 19:15:17 -0500
There's a hill that is about 27 meters (90 ft) above the flat surrounding terrain. Caribbean sea shore is less than two kilometers from this hill. I guess there is a minimum distance of wavelenghts o
/archives//html/Towertalk/2010-01/msg00441.html (8,075 bytes)

2. Re: [TowerTalk] HFTA question (score: 1)
Author: "Steve, W3AHL" <w3ahl@att.net>
Date: Wed, 20 Jan 2010 21:35:38 -0500
David, Use MicroDEM to extract the Digital Elevation Model for your area. There is an "HFTA-changes.pdf" document that updates how to get 1 arc-second data, although you may have to settle for 3 arc-
/archives//html/Towertalk/2010-01/msg00456.html (8,305 bytes)

3. Re: [TowerTalk] HFTA question (score: 1)
Author: Pete Smith <n4zr@contesting.com>
Date: Thu, 21 Jan 2010 06:41:02 -0500
You're certainly right about the minimum number of wavelengths. You can manually construct a .pro file for HFTA, enter the dimensions that you're seeing, and find out. 73, Pete N4ZR Visit the Contest
/archives//html/Towertalk/2010-01/msg00461.html (9,638 bytes)

4. Re: [TowerTalk] HFTA question (score: 1)
Author: "Jim Brown" <jim@audiosystemsgroup.com>
Date: Thu, 21 Jan 2010 07:49:37 -0800
Yes. I did that when first beginning to learn HFTA. Each radial took about one half hour. N6BV, the program author, recently taught a Webinar showing how to import topographical data for locations ar
/archives//html/Towertalk/2010-01/msg00462.html (8,175 bytes)

5. Re: [TowerTalk] HFTA question (score: 1)
Author: cqtestk4xs@aol.com
Date: Thu, 21 Jan 2010 11:12:52 EST
HFTA can handle any distance that you choose to enter. The limitation is the number of data points for each radial. So there would be no problem including that mountain in your analysis. ~~~~~~~~~~~~
/archives//html/Towertalk/2010-01/msg00463.html (8,798 bytes)

6. Re: [TowerTalk] HFTA question (score: 1)
Author: "Jim Brown" <jim@audiosystemsgroup.com>
Date: Thu, 21 Jan 2010 08:42:45 -0800
Yes. N6BV is a member of our contest club, and he's advised many of us individually about this. I live in rather mountainous terrain, and he advised me to use the most detailed maps and go out to tha
/archives//html/Towertalk/2010-01/msg00464.html (8,826 bytes)

7. [TowerTalk] HFTA question (score: 1)
Author: Steve Walter <stevewalter90@gmail.com>
Date: Wed, 19 Nov 2014 16:44:00 -0500
I have been using (as in addicted to) HFTA and really enjoy trying different tower locations around my property. How do I take a Fan name and find the coordinates that are associated with it? I need
/archives//html/Towertalk/2014-11/msg00350.html (6,707 bytes)

8. [TowerTalk] HFTA Question (score: 1)
Author: Bill via TowerTalk <towertalk@contesting.com>
Date: Thu, 24 Sep 2020 23:43:08 +0000 (UTC)
I've used N6BV's HFTA for over 15 years, love it and found it very useful. Recently I downloaded the terrain from K6TU for a new planned station in V31 and found some strange numbers.  All latitude a
/archives//html/Towertalk/2020-09/msg00216.html (7,964 bytes)

9. Re: [TowerTalk] HFTA Question (score: 1)
Author: jimlux <jimlux@earthlink.net>
Date: Thu, 24 Sep 2020 17:29:40 -0700
On 9/24/20 4:43 PM, Bill via TowerTalk wrote: I've used N6BV's HFTA for over 15 years, love it and found it very useful. Recently I downloaded the terrain from K6TU for a new planned station in V31 a
/archives//html/Towertalk/2020-09/msg00217.html (12,118 bytes)

10. Re: [TowerTalk] HFTA Question (score: 1)
Author: Máximo EA1DDO_HK1H <ea1ddo@hotmail.com>
Date: Fri, 25 Sep 2020 06:44:09 +0000
Hi Bill, It seems that terrain model is not realistic, according to you. At my home country, Spain, we can download DEM up to 5m resolution, very high. Usually 25m is enough. For worldwide coverage t
/archives//html/Towertalk/2020-09/msg00218.html (10,418 bytes)

11. Re: [TowerTalk] HFTA Question (score: 1)
Author: jimlux <jimlux@earthlink.net>
Date: Fri, 25 Sep 2020 05:50:59 -0700
It seems that terrain model is not realistic, according to you. At my home country, Spain, we can download DEM up to 5m resolution, very high. Usually 25m is enough. But don't confuse resolution with
/archives//html/Towertalk/2020-09/msg00219.html (11,897 bytes)

12. Re: [TowerTalk] HFTA Question (score: 1)
Author: Máximo EA1DDO_HK1H <ea1ddo@hotmail.com>
Date: Fri, 25 Sep 2020 13:58:57 +0000
I am not an expert, but it seems they go down to 2m x 2m mesh resolution, and accuracy between 25 to 50 cm: https://translate.google.co.uk/translate?sl=es&tl=en&u=https%3A%2F%2Fpnoa.ign.es%2Fespecifi
/archives//html/Towertalk/2020-09/msg00221.html (13,286 bytes)

13. Re: [TowerTalk] HFTA Question (score: 1)
Author: jimlux <jimlux@earthlink.net>
Date: Fri, 25 Sep 2020 07:11:33 -0700
https://translate.google.co.uk/translate?sl=es&tl=en&u=https%3A%2F%2Fpnoa.ign.es%2Fespecificaciones-lidar https://translate.google.co.uk/translate?sl=es&tl=en&u=http%3A%2F%2Fpnoa.ign.es%2Fmdt-lidar 7
/archives//html/Towertalk/2020-09/msg00223.html (8,794 bytes)

14. Re: [TowerTalk] HFTA Question (score: 1)
Author: Máximo EA1DDO_HK1H <ea1ddo@hotmail.com>
Date: Fri, 25 Sep 2020 16:31:35 +0000
Well, whole Spain in 75% of just Texas... Very impressive - Spain is doing (has done?) LIDAR for the entire country - They still have the "tree problem", but I don't think there's the kind of dense
/archives//html/Towertalk/2020-09/msg00224.html (9,555 bytes)

15. Re: [TowerTalk] HFTA Question (score: 1)
Author: jimlux <jimlux@earthlink.net>
Date: Fri, 25 Sep 2020 11:39:59 -0700
Well, whole Spain in 75% of just Texas... yeah, but Texas is flat, and remarkably monotonous in (many?) places. Not as flat as California's central valley, where there are entire quads that are flat
/archives//html/Towertalk/2020-09/msg00226.html (8,983 bytes)

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