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Date: | Sat, 7 Jan 2012 10:19:42 -0500 |
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Steve, here in Florida I am trying to get as much protection as possible.
You know here in northwest Florida we have a large amount of lightning.
So okay I will leave it alone since it seems I have enough for now.
Thanks very much.
Junior Lolley KG4itd
Liberty County Emergency Coordinator
-----Original Message-----
From: For blind ham radio operators [mailto:[log in to unmask]]
On Behalf Of Steve Forst
Sent: Saturday, January 07, 2012 10:14 AM
To: [log in to unmask]
Subject: Re: grounding question
Junior,
Here's what I've heard. And if it is crap, it's widely believed crap.
It's not that they cancel each other out, it's more that being too close
together, they become redundant.
The idea is that the rod has a diameter of coverage equal to it's depth
below ground. So an 8 foot rod also has a coverage area of 8 feet diameter
around it. All this has more to do with lightening protection, I'm not sure
how it affects RF grounding.
I know that some guys with monster towers with extensive ground systems
for lightening protection will put ground rods along the length of
the radials. Since nobody wants to drive in more rods than needed, they
will space them at 16 ft. intervals, the idea being that the 8 foot
coverage diameter of each rod means they can be spaced at 16 ft.
without "overlapping" the coverage area of the rods. Of course I'm sure
that local conditions such as soil type, moisture, and other junk will have
an effect on all this.
Anyway, that's my story and I'm sticking to it.
73, Steve KW3A
On 1/7/2012 8:37 AM, Junior Lolley wrote:
> A grounding question for some of you more experienced hams.
> I had a phone company tech tell me that if two ground rods were less
> than 8 foot a part they canceled each other out.
> And then wasn't really any good.
> Is this correct?
> And if so what is the proper distance for 2 ground rods to be a par?
> I want to get the best ground possible for my tower and radio.
> I just don't have that much experience in grounding.
> I would appreciate any help on this.
>
>
> Junior Lolley KG4itd
> Liberty County Emergency Coordinator
>
>
>
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