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1. [Antennaware] EZNEC how to choose number of segments (score: 1): Author: David Gould <dave@g3ueg.co.uk>; Date: Fri, 12 Jul 2019 12:56:41 +0100; Most of my modelling has been with wire antennas but now I am modelling some verticals with elements having diameters of between 38mm and 25mm for 20m and 40m (and using drooping elevated radials mad; /archives//html/Antennaware/2019-07/msg00000.html (6,817 bytes)
2. Re: [Antennaware] EZNEC how to choose number of segments (score: 1): Author: Guy Olinger K2AV <k2av.guy@gmail.com>; Date: Fri, 12 Jul 2019 09:16:16 -0400; Hi Dave, What are you using for the vertical's counterpoise? What are you using for the the ground type? Where is your source placed? These are essential to answer your question. 73, Guy ____________; /archives//html/Antennaware/2019-07/msg00001.html (8,796 bytes)
3. Re: [Antennaware] EZNEC how to choose number of segments (score: 1): Author: David Gould <dave@g3ueg.co.uk>; Date: Fri, 12 Jul 2019 14:38:54 +0100; Hi Guy, Thanks for quick reply, If I just start with the 20m vertical. It is 38mm tubing with the base 10m off the ground, the source is in the first (bottom) segment. Then there are two tuned 1/4; /archives//html/Antennaware/2019-07/msg00002.html (9,358 bytes)
4. Re: [Antennaware] EZNEC how to choose number of segments (score: 1): Author: Mike Waters <mikewate@gmail.com>; Date: Fri, 12 Jul 2019 13:00:06 -0500; Hello Guy, It sound like you are saying that EZNEC's auto-seg feature should be overridden in some cases. I am all ears, sir! :-) The feature has *conservative* and *minimum recommended*, as you know; /archives//html/Antennaware/2019-07/msg00003.html (8,860 bytes)
5. Re: [Antennaware] EZNEC how to choose number of segments (score: 1): Author: Guy Olinger K2AV <k2av.guy@gmail.com>; Date: Sat, 13 Jul 2019 09:33:08 -0400; Hi Dave, Question A) From your description, I need to know the height above ground. Question B) Exactly what did you mean by tuned radials? Do you mean radials carefully adjusted to 1/4 wave, or smal; /archives//html/Antennaware/2019-07/msg00004.html (14,876 bytes)
6. Re: [Antennaware] EZNEC how to choose number of segments (score: 1): Author: Guy Olinger K2AV <k2av.guy@gmail.com>; Date: Sat, 13 Jul 2019 09:33:40 -0400; This thread is for Dave. So I'd rather not hijack this thread for a separate and likely lengthy topic. So I will not comment here. Please start a separate thread with a separate subject that includes; /archives//html/Antennaware/2019-07/msg00005.html (10,042 bytes)
7. Re: [Antennaware] EZNEC how to choose number of segments (score: 1): Author: Aage Halvorsen <la4zh.aage@gmail.com>; Date: Sat, 13 Jul 2019 16:02:05 +0200; Don't forget that the vertical pipe if metal is part of the antenna and/or the coax as well. Simulation might show that you have to insert some common mode choke(s) in the coax if using a non conduct; /archives//html/Antennaware/2019-07/msg00006.html (11,038 bytes)
8. Re: [Antennaware] EZNEC how to choose number of segments (score: 1): Author: David Gould <dave@g3ueg.co.uk>; Date: Sun, 14 Jul 2019 17:10:06 +0100; Hi Guy, Thanks for the detailed information. I don't know how to say this any different way, that the base of the vertical element (38mm tube) is 10m above ground. The top 1.5m of the support mast; /archives//html/Antennaware/2019-07/msg00007.html (18,672 bytes)
9. Re: [Antennaware] EZNEC how to choose number of segments (score: 1): Author: Dave Cuthbert <telegrapher9@gmail.com>; Date: Sun, 14 Jul 2019 11:33:02 -1000; I believe the segment length should be at least 4X the segment diameter. _______________________________________________ Antennaware mailing list Antennaware@contesting.com http://lists.contesting.co; /archives//html/Antennaware/2019-07/msg00008.html (9,070 bytes)
10. Re: [Antennaware] EZNEC how to choose number of segments (score: 1): Author: Guy Olinger K2AV <k2av.guy@gmail.com>; Date: Fri, 19 Jul 2019 05:34:54 -0400; Hi Dave, Just to make sure I didn't totally wander off the reservation in replying to your original question, you asked about the ratio of segment length to conductor diameter. I HAVE heard segment f; /archives//html/Antennaware/2019-07/msg00009.html (25,325 bytes)
11. Re: [Antennaware] EZNEC how to choose number of segments (score: 1): Author: Terry Conboy <n6ry@arrl.net>; Date: Fri, 19 Jul 2019 10:03:17 -0700; Dave, In general, using real/Mininec ground will give you slightly optimistic gain numbers, especially with horizontal conductors under 1/4 wavelength above ground. This is because for impedance calc; /archives//html/Antennaware/2019-07/msg00010.html (11,168 bytes)

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