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[TowerTalk] My Yearly Mistake

To: "towertalk@contesting.com" <towertalk@contesting.com>
Subject: [TowerTalk] My Yearly Mistake
From: "Roger (K8RI) on TT" <K8RI-on-TowerTalk@tm.net>
Date: Fri, 14 Aug 2015 15:40:43 -0400
List-post: <towertalk@contesting.com">mailto:towertalk@contesting.com>
We were having an off line discussion, but I thought I'd posy my answer to one.

I have mentioned several times that I never scored 100% on a math test. Lots of 95s, but I could always count on one dumb mistake and that's exactly what I did here. Once I found the mistakes, it was so obvious that I fail to see how those schooled in mathematics missed it/them. It's been over 25 years since I graduated and I often hear the median referred to as the middle value, when in reality it is the middle, measured value. IOW you first arrange all the measure/observed values in order of the parameter you are keying on. Then take the middle measure/observed variable. IOW if there are 3 values, you take the value of the second. If there are 11 measured values. you take the 6th. What I did was to take the middle value between the minimum and maximum of the set. Why? I don't know. Minor in math, but brain fart?

Well at least I have my allocated mistake for the year out of the way, so, I should be spot on for the rest of the year <cough><cough>

At any rate, as you said, we are playing the odds with lightening and we need to know the likelihood of those outliers. At first the return Vs cost is great, but the law of diminishing returns quickly rears its ugly head where it costs a lot for a little increase in return.

One thing I do think missing in the ground rod Vs UFER comparisons is the area covered by the system. How does that system area compare with the contact area of the ground rods and UFER contact area once the desired resistance has been achieved?

As hams with out a government budget where monstrous cost over runs are often tolerated, our auditors/wives are not nearly so forgiving of estimated costs, let alone, over runs. <:-)

In corporate America, avoiding cost over runs is a good way to assure continued employment.

73

Roger (K8RI)

--

73

Roger (K8RI)


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