[TowerTalk] Re; Ground Rod Plating

[Jim Brown]

On 4/9/2021 1:06 PM, Dennis W0JX via TowerTalk wrote:
> I have a similar question. I have pulled copper 1/2" and 3/4" water pipe out of the ground after several years and have found that the surface of the pipe is a dark brown color, most likely oxidized copper. I have measured the surface resistance and note that it can be high.

That means that we must consider the chemistry both the rod and of the 
soil, and choose a rod least likely to react. An optimistic view of 
things (voiced by N0AX in his ARRL book on the topic) is that stores in 
a given location will stock rods whose chemistry is suitable.

73, Jim K9YC