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Dissimilar Metal Question
I want to install a Motorola (NMO) VHF hole mount in my car's trunk
lid. Like most late model vehicles however, it is made entirely of aluminum. If your familiar with it, you know the mount fitting is machined of brass. I've done a few of these on traditional sheet steel trunks without thinking about this before, and never had a problem with premature failure from galvanic type corrosion. Besides electrical/RF degradation, I am equally concerned about the integrity of the vehicle finish in the event of catastrophic corrosion. I intend to run about 50w to this antenna. My question is: If my installation is as waterproof as they always have been, should I be more concerned about this phenomena while dealing with brass and aluminum than I was with brass and steel? I have found a lot of talent in this group. Thanx in advance for your well-considered opinions. |
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