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1. [TowerTalk] ez nec help (score: 1): Author: john nistico <electric911inc@hotmail.com>; Date: Sun, 3 May 2020 16:28:23 +0000; I am new at modeling and can use some advice. My son has a small tower and I modeled a 2 element 20 meter wire beam on a 10 ft boom. looks great on paper but would like aluminum elements how do I fig; /archives//html/Towertalk/2020-05/msg00004.html (7,490 bytes)
2. Re: [TowerTalk] ez nec help (score: 1): Author: jimlux <jimlux@earthlink.net>; Date: Sun, 3 May 2020 10:09:28 -0700; On 5/3/20 9:28 AM, john nistico wrote: I am new at modeling and can use some advice. My son has a small tower and I modeled a 2 element 20 meter wire beam on a 10 ft boom. looks great on paper but wo; /archives//html/Towertalk/2020-05/msg00005.html (7,271 bytes)
3. Re: [TowerTalk] ez nec help (score: 1): Author: Dan Maguire <danac6la@gmail.com>; Date: Sun, 3 May 2020 12:09:41 -0700; You might try opening EZNEC sample model 20M5ELYA.ez. That's a typical 5-element 20m beam with stepped diameter tubing. (EZNEC uses "stepped diameter" for telescoping aluminum tubes because "tapered; /archives//html/Towertalk/2020-05/msg00006.html (7,508 bytes)
4. Re: [TowerTalk] ez nec help (score: 1): Author: jimlux <jimlux@earthlink.net>; Date: Sun, 3 May 2020 12:19:25 -0700; You might try opening EZNEC sample model 20M5ELYA.ez. That's a typical 5-element 20m beam with stepped diameter tubing. (EZNEC uses "stepped diameter" for telescoping aluminum tubes because "tapered; /archives//html/Towertalk/2020-05/msg00007.html (9,142 bytes)
5. Re: [TowerTalk] ez nec help (score: 1): Author: Wes <wes_n7ws@triconet.org>; Date: Sun, 3 May 2020 15:49:48 -0700; There's some misinformation here. Rather than reinventing the wheel, I will suggest reading the EZNEC help section: "Stepped Diameter Correction Overview". Wes N7WS Excellent point - tapered means; /archives//html/Towertalk/2020-05/msg00009.html (8,022 bytes)
6. Re: [TowerTalk] ez nec help (score: 1): Author: jimlux <jimlux@earthlink.net>; Date: Sun, 3 May 2020 17:22:42 -0700; Wes N7WS Excellent point - tapered means "conical section" (i.e. smoothly varying radius), and most antennas are actually stepped. In all the NEC engines, there's no problem connecting a "wire" with; /archives//html/Towertalk/2020-05/msg00011.html (10,257 bytes)
7. Re: [TowerTalk] ez nec help (score: 1): Author: N5KM - Kris <n5kilomike@gmail.com>; Date: Tue, 5 May 2020 15:35:27 -0500; The way I model using eznec/4nec2 is to model the yagi as a wire model, as you have. Then I isolate each element by itself and determine it's resonant frequency. When I build the physical model I sim; /archives//html/Towertalk/2020-05/msg00027.html (8,634 bytes)

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