I should have made myself a little more clear, sorry. This IS part of a
properly designed ground system -- SPG, multiple ground radials off the tower
legs (with #2 interconnecting, Cadwelded), halo ground, etc. Ron Block's
article in QST is a good view of what I'm putting in. My question was very
specific to the location of the perimeter ground.
Quoting "Bill Hider (N3RR)" <n3rr@erols.com>:
> Jeff,
>
> No, that will not "do".
>
> You need to follow proper grounding procedures.
>
> Ground rods need to be spaced every "2n" apart, where n=the length of
> the
> ground rod in feet. The grid should be n distance from the building
> also.
> It's not the #4 wire that's important, it's the ground rods!
>
> Depending on where your power, Telco, antenna cables, and control cables
> enter the building, that will/may modify that somewhat.
> You need a single point ground SPG entry that is tied into the ground
> grid
> along with power & Telco.
>
> The above is just the beginning of a design for your situation. Please
> look
> at my website and see what needs to be considered when designing a
> grounding/lightning protection scheme. www.erols.com/n3rr
>
> Also, read the PolyPhaser book or go to their website.
>
> Then, come back and ask more questions.
>
> 73,
>
> Bill, N3RR
>
>
> ----- Original Message -----
> From: <sparks@apk.net>
> To: <towertalk@contesting.com>
> Sent: Monday, August 26, 2002 12:17 PM
> Subject: [Towertalk] Lightning Protection - Perimeter Ground
>
>
> > My shack is in a separate building 25 feet from the base of my tower.
> How
> close
> > to the building should the perimeter ground be? I was going to tuck
> #4
> bare
> > copper into a 4-6" deep slit about a foot from the sidewalls, with a
> ground rod
> > at each corner. Think that'll do?
> >
> > 73 - Jeff, WB2RUZ
> > _______________________________________________
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>
>
Jeffrey C. Brown
Technology Solutions for Business, Inc.
330-416-8728 Cell
440-393-0949 Pager
815-371-1208 eFax
|