[TowerTalk] Ground Rods

[Grillo's]

That's why I asked the question if anyone had used Chem Rod before.  I am still interested in knowing of successful installations for my type of soil.  The system uses hollow rods you drive down into the rocky soil (using a long rock drill bit).  You then pour chemicals inside the rod.  The chemicals seep into the subsurface and lower the impedance.  One of the calculations I was looking at can drop impedance from 300 down to 5 ohms with using only 4 of these rods.  (Assumes rocky soil, but impedance testing would be best to assure that is the right scenario).  If this works, it is exactly what I need to do to put my tower up.  It will be the tallest structure within 10 mile radius of the QTH, thus I am assuming the worst case for lightning protection.

73,
Pete
W0RTT

----- Original Message ----- 
From: "GALE STEWARD" <k3nd at yahoo.com>
To: "towertalk reflector" <towertalk at contesting.com>
Sent: Monday, May 03, 2004 6:35 AM
Subject: Re: [TowerTalk] Ground Rods


> Makes me wonder how the ground systems are installed
> on the microwave towers, and even the Forest Service
> fire towers. The ones I've seen all seem to be high on
> a very rocky ridge or mountain top. I'm sure they take
> a lot of lightning hits. Anyone have any info?
> 
> 73, Stew K3ND
> 
> 
> --- K8fu at aol.com wrote:
> > One caveat that I guess was not picked up from
> > earlier postings is that the 
> > Frog here lives on top of an extremely rocky ridge.
> > When they came out to drill 
> > the well the driller broke 3 bits before
> > reaching150'. That's why I was 
> > curious as to whether there was any type of pwr
> > equip available for rental, and if 
> > I could drive a sharpened piece of angle iron as a
> > guide hole.
> > 
> > Froggy            K8FU
> > 
> 
> 
> 
> 
> 
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