[Elecraft] Re:Ufer Ground question

David F. Reed davereed at w5sv.org
Thu Jul 14 11:50:55 EDT 2005


Julius,

good question...

J F wrote:

>Hi Dave,
>
>Just out of curiousity, did you consider the tower
>base safe after that experience, from a mechanical
>standpoint?
>  
>
At first no. not until it was surveyed my a licensed mechanical and 
electrical engineer team; they used some sort of fancy equipment to see 
what was up; it was only damaged at the site that I described, and had 
no structural issues according to them.

I admit, I was plenty worried about what I couldn't see, but they had 
something like sonar or radar (I don't recall if it was RF or sonic, but 
it saw reflections from surface interfaces, and was quite clear.

>What you describe for your system seems like a lot
>more than a 10' length of wire set in concrete.
>
It is indeed far far more than 10' of wire set in concrete, which I 
would hardly call a Ufer ground.

> We have this type of construction in our facility and as
>you say it is expensive and requires proper
>installation (sadly, that can be an iffy proposition).
>We haven't had any lightning strike issues for a large
>installation on the highest point of the county.
>  
>
Some people are luckier than others, and some areas get more lightning 
storms than others; we are not far from some famous tornado alleys, so 
we have plenty of them.

>73,
>Julius
>n2wn
>  
>
73 de Dave, W5SV

-- 
David F. Reed  - W5SV -     cell: 512 585-1057



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