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RE: [TowerTalk] There's 'ground', and then there's 'ground'

To: "'Alan NV8A (ex. AB2OS)'" <>,"'towertalk reflector'" <>
Subject: RE: [TowerTalk] There's 'ground', and then there's 'ground'
From: "David Robbins K1TTT" <>
Date: Mon, 17 Jan 2005 17:04:11 -0000
List-post: <>
That is a convenient way to say 'keep them away from the foundation'...
moisture helps for low frequency and low current grounding where ion
conduction is the main conduction method, but does almost nothing for high
frequencies or lightning.

David Robbins K1TTT
AR-Cluster node: 145.69MHz or telnet://

> -----Original Message-----
> From: Alan NV8A (ex. AB2OS) []
> Sent: Monday, January 17, 2005 17:00
> To: towertalk reflector
> Cc: David Robbins K1TTT
> Subject: Re: [TowerTalk] There's 'ground', and then there's 'ground'
> I have read that the ground rods should be out from the eaves,
> presumably (my guess) because the ground there will stay moister.
> Alan NV8A
> On 01/17/05 11:38 am David Robbins K1TTT tossed the following
> ingredients into the ever-growing pot of cybersoup:
> > Depending on the spacing of the 2 existing rods you could reduce your
> ground
> > impedance by 50% or more with 2 more rods.  Maybe a LOT more depending
> on
> > the exact geometry of the situation.  Lots of people make a big mistake
> by
> > driving a rod right next to the foundation, you should note that this
> > reduces the effectiveness of the rod because half of the circle around
> it is
> > cut off by the foundation forcing all the current to go in only one
> > direction.


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