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Re: [TenTec] New and Improved Terminology (NVIS origins)

To: Discussion of Ten-Tec Equipment <tentec@contesting.com>
Subject: Re: [TenTec] New and Improved Terminology (NVIS origins)
From: Richards <jruing@ameritech.net>
Reply-to: Discussion of Ten-Tec Equipment <tentec@contesting.com>
Date: Thu, 06 Jan 2011 11:45:00 -0500
List-post: <tentec@contesting.com">mailto:tentec@contesting.com>
Excellent exegesis from all contributors.

I believe we can go one step further... I believe some of his comments 
are misplaced because they are completely gratuitous  comments which are 
not directly correlated to the exam questions,  which means he has said 
more than he needed to in the first place.

Go figure... there is nothing sacred... you just never know who you can 
trust any more !
A good ham friend of mine just bristled when I once said something 
negative about Gordon West study materials, as the other ham took 
Gordo's class in person and knew him well living in LA.   I am just 
trying to figure out ham radio and maybe pass the next exam.

All of the comments in this thread are of interest to me as I am working 
on a couple of antenna building projects, including some tubular 
aluminum dipoles,  vertical dipoles, and possibly a vertical ground 
plane (necessitated because the tubing I purchased for the 20 meter alum 
dipole sags and flexes too much... oops...)   and I am trying to design 
either a vertical ground plane or vertical dipole from the tubing.

==================  James -K8JHR  =======================

On 1/6/2011 7:46 AM, Steve Hunt wrote:
> The most directly relevant question is E9C15:
> What strongly affects the shape of the far-field, low-angle elevation
> pattern of a
> vertically polarized antenna?
> A. The conductivity and dielectric constant of the soil in the area of
> the antenna
> B. The radiation resistance of the antenna and matching network
> C. The SWR on the transmission line
> D. The transmitter output power
> The correct answer (A) doesn't define what is meant by "in the area of
> the antenna". To that extent it is a badly-worded question. Fortunately,
> you can arrive at answer A through a process of eliminating the others.
> However "Gordo's" advice contains no such ambiguity. He says: "Well,
> that would be the conductivity and dielectric constant of the soil in
> the area *just below the antenna*." [my emphasis]. That is plainly
> wrong, as we have seen.
> It seems a shame if students have to accept technical error in order to
> pass an exam.
> 73,
> Steve G3TXQ
> On 06/01/2011 12:11, geoffrey mendelson wrote:
>> On Jan 6, 2011, at 1:26 PM, Steve Hunt wrote:
>>> ARRL Extra Class License Manual, Page 9-8 Effects of Ground and Ground
>>> Systems:
>> <http://www.ncvec.org/page.php?id=351>
>> Here is the actual question pool. You are welcome, if you wish, to
>> read through it and see which questions pertain to the subject, and if
>> they do, does the quote from "Gordo" or the competition (ARRL) help
>> you pass the test.
>> Note that as far as I know, and I may be wrong, you can't challange a
>> test result based on the accuracy of a question. Anyone can challenge
>> a question in the pool, and if succcessful, the question will either
>> be deleted, amended or replaced, but until it is, answers that do not
>> match published correct ones will be counted incorrect and there is no
>> way to appeal.
>> Geoff.
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