[TowerTalk] ground rods and angle...

[Jim Brown]

Thanks, Jim.  Another issue -- everything I've seen published talks 
about resistance at audio frequencies. How about at RF?

73, Jim K9YC

On Tue,1/19/2016 11:11 AM, jimlux wrote:
> On 1/19/16 9:42 AM, Jim Brown wrote:
>> On Tue,1/19/2016 7:10 AM, Chris wrote:
>>> Backfill with bentonite or similar conductive earth material.  I know
>>> a local installer who puts up broadcast towers who did this and
>>> created a ridiculously low resistance ground network on a rock
>>> mountaintop.
>>
>> Yes, but -- it's my understanding that bentonite and similar materials
>> must be recharged periodically to be effective.
>>
>
> ionic salts, yes
> bentonite, no
>
> the ionic affinity of bentonite is all about it's mechanical and 
> chemical structure. It's a very, very fine clay with all sorts of 
> unusual properties.
>
> the bentonite has to have moisture, though.
>
> This is one of the big selling points to bentonite and fly ash: they 
> don't leach. You don't get into trouble with the NEPA, CEQA 
> compliance, for instance.
>
>
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