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Galvanized or Copper Gound Rods?
I used one 10 ft. copper clad steel ground rod and three 10 ft. copper
pipes. The pipes had 1/4 inch holes drilled randomly throughout the bottom six feet and allowed me to annually pour an epsom salt solution through them to enhance ground conductivity. One copper pipe was set about 6 inches away from the paired copper clad steel -- this enabled the salt solution to salt the region of both. The two sets were about ten feet apart and joined together with heavy copper clad steel wire (Silver soldered). . To one set I attached a number of random length radials running across the yard (along two fence lines) and around the side of the house. They gave me a real good ground as far as I was concerned. Due to illness I recently sold the house, and extracted the ground system. Surprisingly there was little if any degredation of the metal elements -- that was after 27 years in the ground! Both the copper clad steel rod and the copper pipes were in good shape. Copper is expensive, but it lasted a long time and took the worry about whether I had a good ground away. To install the copper pipes, I first drove in the copper clad steel rod, then drew it out of the ground with a car jack and inserted the copper pipes in the resultant holes. To make the job easy, I had a young ham use a sledgehammer to drive the copper clad steel pipe into the ground and jack it back out -- three times! For the fourth hole I did not have to extract the rod -- it was left in place. I'm no engineer, and never did any ground testing (whatever that involved), but I was totally satisfied with the system. Do it once right amd then don't worry about it! Irv VE6BP "Richard Clark" wrote in message ... On Thu, 27 May 2010 17:36:41 -0700, Bob Smits wrote: Is there a significant difference between using the galvanized steel ground rods and copper to create an rf gound? Hi Bob, Two answers for that: 1. No difference whatever; B. Neither make an RF ground. Updates will follow this brief announcement. 73's Richard Clark, KB7QHC |
#2
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Galvanized or Copper Gound Rods?
On Fri, 28 May 2010 11:17:28 -0600, "Irv Finkleman"
wrote: I'm no engineer, and never did any ground testing (whatever that involved), Hi Irv, In fact you had the perfect opportunity to do simple but effective test through a classic three electrode measurement. You perform the test three times by rotation among the three electrodes. You apply a HIGH voltage across the two most distant electrodes, measure that current, and measure the potential difference to the third, middle electrode. You must us a high voltage to overcome local ground currents and any cathodic action. 50 or more volts is enough. 73's Richard Clark, KB7QHC |
#3
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Quote:
This procedure, very possibly, may not work in VE6 land; in the wintertime. Where I live, I can drill a hole in usually less than 5 minutes, and drop in the ground rod shortly thereafter. |
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