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1. [TowerTalk] Radiation angle (score: 1): Author: "AD5VJ Bob" <rtnmi@sbcglobal.net>; Date: Thu, 8 Dec 2005 17:44:21 -0600; Does anyone know all the factors that affect the angle of radiation from a horizontal dipole. Height being one of course, but are there others that raise or lower the angle and /or broaden or narrow; /archives//html/Towertalk/2005-12/msg00149.html (6,950 bytes)
2. Re: [TowerTalk] Radiation angle (score: 1): Author: Jim Lux <jimlux@earthlink.net>; Date: Thu, 08 Dec 2005 16:29:05 -0800; Not to be glib, but the answer is yes, hundreds and hundreds of people have studied this. Such studies, from both a theoretical and experimental standpoint, form the basis for such useful programs as; /archives//html/Towertalk/2005-12/msg00150.html (8,683 bytes)
3. Re: [TowerTalk] Radiation angle (score: 1): Author: "AD5VJ Bob" <rtnmi@sbcglobal.net>; Date: Thu, 8 Dec 2005 19:13:47 -0600; Hi Jim: Thanks for the reply you led me to this program since I cant afford the other one right now: Looks like this might work for now at least EMMCAP Modeling of wire structures 1. Wire structures; /archives//html/Towertalk/2005-12/msg00152.html (10,984 bytes)
4. Re: [TowerTalk] Radiation angle (score: 1): Author: K4SAV <RadioIR@charter.net>; Date: Thu, 08 Dec 2005 21:53:11 -0600; The two largest factors affecting the take-off angle of a horizontal dipole are the height above ground and the terrain surrounding your antenna. NEC based and similar programs will give you informat; /archives//html/Towertalk/2005-12/msg00156.html (10,036 bytes)
5. Re: [TowerTalk] Radiation angle (score: 1): Author: Jim Lux <jimlux@earthlink.net>; Date: Thu, 08 Dec 2005 20:41:02 -0800; 4nec2 is free.... As is NEC2... http://www.nec2.org/ has all sorts of info you can find the software at http://www.si-list.org/swindex2.html search for 4nec2... Only NEC4 costs money, and if you're m; /archives//html/Towertalk/2005-12/msg00158.html (8,452 bytes)
6. Re: [TowerTalk] Radiation angle (score: 1): Author: "D. Scott MacKenzie" <kb0fhp@comcast.net>; Date: Thu, 8 Dec 2005 23:42:43 -0500; I use MMANA which is available for free - easy to use and accurate answers... 4nec2 is free.... As is NEC2... http://www.nec2.org/ has all sorts of info you can find the software at http://www.si-lis; /archives//html/Towertalk/2005-12/msg00160.html (9,556 bytes)
7. Re: [TowerTalk] Radiation angle (score: 1): Author: Jim Lux <jimlux@earthlink.net>; Date: Thu, 08 Dec 2005 20:49:25 -0800; Jerry brings up a very good point.. NEC will give you the antenna pattern, but doesn't deal with far field effects. Not only uneven terrain, but varying soil properties, not to mention houses, trees,; /archives//html/Towertalk/2005-12/msg00161.html (9,254 bytes)
8. Re: [TowerTalk] Radiation angle (score: 1): Author: Pete Smith <n4zr@contesting.com>; Date: Fri, 09 Dec 2005 01:36:58 -0500; And if you want to automate a lot of iterations, such as modeling a dipole at all heights from a foot to 100 feet, try MultiNEC, which is an Excel add-in, and free in a full-power demo version. 73, P; /archives//html/Towertalk/2005-12/msg00165.html (9,765 bytes)
9. Re: [TowerTalk] Radiation angle (score: 1): Author: Ian White GM3SEK <gm3sek@ifwtech.co.uk>; Date: Fri, 9 Dec 2005 08:58:17 +0000; If Bob (who started this thread) buys the ARRL Antenna Handbook to get a copy of HFTA, he'll find that author N6BV approaches the whole problem in a radically different way. Instead of jumping straig; /archives//html/Towertalk/2005-12/msg00167.html (12,334 bytes)
10. Re: [TowerTalk] Radiation angle (score: 1): Author: Jim Lux <jimlux@earthlink.net>; Date: Fri, 09 Dec 2005 05:48:57 -0800; Providing you have a horizontally polarized antenna (but many amateurs DO have horizontally polarized antennas, so that's ok). VOACAP is also free, and a wonderful program to fool with. There's been; /archives//html/Towertalk/2005-12/msg00170.html (10,054 bytes)
11. Re: [TowerTalk] Radiation angle (score: 1): Author: Ian White GM3SEK <gm3sek@ifwtech.co.uk>; Date: Fri, 9 Dec 2005 17:48:51 +0000; [...] Extending HFTA to vertical polarization has to be top of everybody's wish list... but the whole problem is much more affected by ground conductivity and permittivity a long way out from our ant; /archives//html/Towertalk/2005-12/msg00174.html (10,704 bytes)
12. Re: [TowerTalk] Radiation angle (score: 1): Author: "AD5VJ Bob" <rtnmi@sbcglobal.net>; Date: Fri, 9 Dec 2005 12:04:14 -0600; Got it and joined the list. This looks good, hope I can learn how to make a new file. I got the 4nec2 and it came with lots of antennas already done which I have played with on the printer and this w; /archives//html/Towertalk/2005-12/msg00176.html (9,980 bytes)
13. Re: [TowerTalk] Radiation angle (score: 1): Author: "AD5VJ Bob" <rtnmi@sbcglobal.net>; Date: Fri, 9 Dec 2005 12:50:04 -0600; Got VOACAP also thanks Looks like I just change the parameters in one of the models that came with VOACAP and then save it as a new file and it will be a "roll your own" after that. HFTA I haven't fo; /archives//html/Towertalk/2005-12/msg00178.html (12,723 bytes)

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