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1. [TowerTalk] Cutting a dipole (score: 1): Author: "James Setzler" <jms_k1sd@verizon.net>; Date: Wed, 04 Sep 2013 18:32:38 -0400; Greetings I should know this but I've not made too many dipoles. While it is hanging at 8 feet so I can get to it, I've cut a 40 m dipole to the frequency I want. When I raise the apex to 65 feet as; /archives//html/Towertalk/2013-09/msg00061.html (6,652 bytes)
2. Re: [TowerTalk] Cutting a dipole (score: 1): Author: <john@kk9a.com>; Date: Wed, 04 Sep 2013 20:34:55 -0500; The resonant frequency and the impedance will go up if it remained a straight dipole. Tuning it at 8 feet high is a waste of time. John KK9A Greetings I should know this but I've not made too many di; /archives//html/Towertalk/2013-09/msg00063.html (7,673 bytes)
3. Re: [TowerTalk] Cutting a dipole (score: 1): Author: "Wes Attaway $N5WA$" <wesattaway@bellsouth.net>; Date: Wed, 4 Sep 2013 19:42:53 -0500; Why not use EZNEC or similar program to model the dipole at 8' straight across and then at the 65'apex with whatever the height of the ends are? This should give you a good idea of what to expect. Yo; /archives//html/Towertalk/2013-09/msg00064.html (8,654 bytes)
4. Re: [TowerTalk] Cutting a dipole (score: 1): Author: Bob K6UJ <k6uj@pacbell.net>; Date: Wed, 4 Sep 2013 18:37:51 -0700; FWIW I have never had good results trying to calculate the difference in resonant freq from low heights vs the desired height on an inverted V. I finally reached the conclusion it was a waste of time; /archives//html/Towertalk/2013-09/msg00065.html (10,950 bytes)
5. Re: [TowerTalk] Cutting a dipole (score: 1): Author: "Tom Osborne" <w7why@frontier.com>; Date: Wed, 4 Sep 2013 18:48:21 -0700; I agree with Bob. Easier to just put it up in its final place and check it. To make tuning easier, you don't have to cut the ends, Just wrap them back on the antenna until you get the right length. 7; /archives//html/Towertalk/2013-09/msg00066.html (7,896 bytes)
6. Re: [TowerTalk] Cutting a dipole (score: 1): Author: David Gilbert <xdavid@cis-broadband.com>; Date: Wed, 04 Sep 2013 19:26:38 -0700; That's probably because none of us have a true idea just where our effective "ground" is. It's not like there is some high conductivity zone in the top few inches of soil, or that everyone's soil con; /archives//html/Towertalk/2013-09/msg00067.html (11,478 bytes)
7. Re: [TowerTalk] Cutting a dipole (score: 1): Author: Jim Brown <jim@audiosystemsgroup.com>; Date: Wed, 04 Sep 2013 19:32:59 -0700; Not only that, it's the only method that works. :) It should be obvious from this discussion that you want to use some sort of hanging method that lets you raise and lower it. That can be anything fr; /archives//html/Towertalk/2013-09/msg00068.html (8,628 bytes)
8. Re: [TowerTalk] Cutting a dipole (score: 1): Author: Jim Lux <jimlux@earthlink.net>; Date: Wed, 04 Sep 2013 20:42:47 -0700; I should know this but I've not made too many dipoles. While it is hanging at 8 feet so I can get to it, I've cut a 40 m dipole to the frequency I want. When I raise the apex to 65 feet as an inverte; /archives//html/Towertalk/2013-09/msg00072.html (8,421 bytes)
9. Re: [TowerTalk] Cutting a dipole (score: 1): Author: Jim Lux <jimlux@earthlink.net>; Date: Wed, 04 Sep 2013 20:54:11 -0700; That's probably because none of us have a true idea just where our effective "ground" is. It's not like there is some high conductivity zone in the top few inches of soil, or that everyone's soil con; /archives//html/Towertalk/2013-09/msg00073.html (9,919 bytes)
10. Re: [TowerTalk] Cutting a dipole (score: 1): Author: "Earl Morse" <kz8e@wt.net>; Date: Thu, 5 Sep 2013 06:42:03 -0700; Definitely too many variables going on to make the calculation easy and straight forward. Effects of height above ground, the actual ground parameters, and whether it is in an inverted vee configurat; /archives//html/Towertalk/2013-09/msg00078.html (9,969 bytes)
11. Re: [TowerTalk] Cutting a dipole (score: 1): Author: "James Setzler" <jms_k1sd@verizon.net>; Date: Fri, 06 Sep 2013 17:30:06 -0400; Thanks for all the replies (especially the beneficial ones). I got what I wanted. 73 James K1SD _______________________________________________ _______________________________________________ TowerTa; /archives//html/Towertalk/2013-09/msg00105.html (7,857 bytes)

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