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References: [ +subject:/^(?:^\s*(re|sv|fwd|fw)[\[\]\d]*[:>-]+\s*)*\[TowerTalk\]\s+Modeling\s+a\s+Yagi\s+in\s+EZNec\s*$/: 6 ]

Total 6 documents matching your query.

1. [TowerTalk] Modeling a Yagi in EZNec (score: 1)
Author: Tom Hellem <tom.hellem@gmail.com>
Date: Wed, 29 May 2024 09:27:16 -0600
Those who use NEC to model a yagi, do you include the lead lengths in the model for the connecting wires that go from the balun to the feed terminals of the driven element? If so, do you model them a
/archives//html/Towertalk/2024-05/msg00106.html (7,826 bytes)

2. Re: [TowerTalk] Modeling a Yagi in EZNec (score: 1)
Author: Máximo EA1DDO_HK1H <ea1ddo@hotmail.com>
Date: Wed, 29 May 2024 15:36:03 +0000
Personally, I never include the leads. We should try to get them as short as possible. Then, if the design has never tested before... Some adjustment are highly likely. 73, Maximo EA1DDO Those who us
/archives//html/Towertalk/2024-05/msg00107.html (8,386 bytes)

3. Re: [TowerTalk] Modeling a Yagi in EZNec (score: 1)
Author: Wes <wes_n7ws@triconet.org>
Date: Wed, 29 May 2024 10:45:20 -0700
Since the leads are (ideally) non-radiating, I would call them a transmission line.  If you try to include them, then you run into stepped diameter issues, etc. On the whole, if this is HF and not VH
/archives//html/Towertalk/2024-05/msg00108.html (8,326 bytes)

4. Re: [TowerTalk] Modeling a Yagi in EZNec (score: 1)
Author: <john@kk9a.com>
Date: Wed, 29 May 2024 17:46:56 -0400
That is something I have also thought about. I do not include the balun lead wires. They are likely part of the transmission line but if not, a short 90° segment like that may still may not model cor
/archives//html/Towertalk/2024-05/msg00110.html (8,130 bytes)

5. Re: [TowerTalk] Modeling a Yagi in EZNec (score: 1)
Author: Leeson <leeson@earthlink.net>
Date: Wed, 29 May 2024 15:31:26 -0700
In designing some Yagis to be built without further adjustment at a DX contest station, I experimented with calculating the shortening of the driven element tip to compensate for balun leads. As a si
/archives//html/Towertalk/2024-05/msg00111.html (10,180 bytes)

6. Re: [TowerTalk] Modeling a Yagi in EZNec (score: 1)
Author: Wes <wes_n7ws@triconet.org>
Date: Thu, 30 May 2024 16:10:03 -0700
I think this violates some modelling guidelines. From the EZNEC manual: 1. The source shouldn't be placed on a wire which is shorter than about 0.02 wavelength, particularly if adjacent wires connect
/archives//html/Towertalk/2024-05/msg00114.html (9,488 bytes)

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