You need a chemist or a corrosion engineer, Pat. I don't know the answer to
that. What I have done, for whatever it is worth, is to get rid of all
copper-plated ground rods around my tower in favor of galvanized steel ones, to
eliminate the galvanic differential.
73, Pete N4ZR
At 03:56 PM 1/16/2006, Pat Barthelow wrote:
>Pete, N4ZR Said:
>>It's probably worth pointing out that ANY anchor scheme that relies on
>>galvanized steel hardware below ground is exposed to the same potential for
>>galvanic action; some pretty serious tower people around here make it a
>>practice to coat any galvanized hardware that will be below ground with
>>asphalt roofing cement before installing it.
>>73, Pete N4ZR
>Thanks for that info Pete. I wonder if there is a problem with coating the
>undergroud portion, if you do not have a PERFECT insulative seal with the
>coating, if the very small, say, pinhole that remains exposed, causes a high
>density of galvanic current, attacking the metal at a point location, that
>will hasten the erosion at a single point, compared to a large area of steel
>that might be attackeed more gradually.
>73, de Pat AA6EG firstname.lastname@example.org
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