Brian,
Both of the suggestions I've seen to your question would be acceptable. I
prefer the tinned copper myself as you can do it without having to buy
additional hardware.
Beyond that, it would be very beneficial to seal the connection with your
favorite "liquid tape" or Scotchkote and vinyl electrical tape to keep
moisture out of the joint. The moisture is the electrolyte that turns the
dissimilar metal joint into a battery.
73, Kurt
YagiStress - The Ultimate Mechanical Design Software for Yagi's
Visit - http://freeyellow.com/members3/yagistress
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